Edgar Filing: WESTLAKE CHEMICAL CORP

Large accelerated filer

Accelerated filer

Non-accelerated filer

¨ (Do not check if a smaller reporting company)

Smaller reporting company

Document

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q



x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended June 30, 2016



¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the Transition Period from to

Commission File No. 001-32260

Westlake Chemical Corporation

(Exact name of Registrant as specified in its charter)



Delaware		76-0346924
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification Number)

2801 Post Oak Boulevard, Suite 600

Houston, Texas 77056

(Address of principal executive offices, including zip code)

(713) 960-9111

(Registrant's telephone number, including area code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a smaller reporting company. See definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act) Yes ¨ No x

The number of shares outstanding of the registrant's sole class of common stock as of August 2, 2016 was 128,783,338.

INDEX




Item	Page
PART I. FINANCIAL INFORMATION
1) Financial Statements	1
2) Management's Discussion and Analysis of Financial Condition and Results of Operations	34
3) Quantitative and Qualitative Disclosures about Market Risk	47
4) Controls and Procedures	47

PART II. OTHER INFORMATION
1) Legal Proceedings	48
1A) Risk Factors	48
2) Unregistered Sales of Equity Securities and Use of Proceeds	50
6) Exhibits	51

NON-GAAP FINANCIAL MEASURES

The body of accounting principles generally accepted in the United States is commonly referred to as "U.S. GAAP." For this purpose, a non-GAAP financial measure is generally defined by the Securities and Exchange Commission ("SEC") as one that purports to measure historical or future financial performance, financial position or cash flows, but excludes or includes amounts that would not be so adjusted in the most comparable GAAP measures. In this report, we disclose so-called non-GAAP financial measures, primarily earnings before interest, taxes, depreciation and amortization ("EBITDA"). EBITDA is calculated as net income before interest expense, income taxes, depreciation and amortization. The non-GAAP financial measures described in this Form 10-Q are not substitutes for the GAAP measures of earnings and cash flow.

EBITDA is included in this Form 10-Q because our management considers it an important supplemental measure of our performance and believes that it is frequently used by securities analysts, investors and other interested parties in the evaluation of companies in our industry, some of which present EBITDA when reporting their results. We regularly evaluate our performance as compared to other companies in our industry that have different financing and capital structures and/or tax rates by using EBITDA. In addition, we utilize EBITDA in evaluating acquisition targets. Management also believes that EBITDA is a useful tool for measuring our ability to meet our future debt service, capital expenditures and working capital requirements, and EBITDA is commonly used by us and our investors to measure our ability to service indebtedness. EBITDA is not a substitute for the GAAP measures of earnings or of cash flow and is not necessarily a measure of our ability to fund our cash needs. In addition, it should be noted that companies calculate EBITDA differently and, therefore, EBITDA as presented for us may not be comparable to EBITDA reported by other companies. EBITDA has material limitations as a performance measure because it excludes interest expense, depreciation and amortization, and income taxes.

Table of Contents

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

WESTLAKE CHEMICAL CORPORATION

CONSOLIDATED BALANCE SHEETS

(Unaudited)



	June 30, 2016			December 31, 2015

	(in thousands of dollars, except par values and share amounts)
ASSETS
Current assets
Cash and cash equivalents	$	770,997		$	662,525
Marketable securities	352,021			520,144
Accounts receivable, net	582,855			508,532
Inventories	448,526			434,060
Prepaid expenses and other current assets	35,642			14,489
Deferred income taxes	—			35,439
Total current assets	2,190,041			2,175,189
Property, plant and equipment, net	3,230,523			3,004,067
Equity investments	8,929			9,208
Other assets, net
Intangible assets, net	208,376			213,404
Deferred charges and other assets, net	282,695			167,417
Total other assets, net	491,071			380,821
Total assets	$	5,920,564		$	5,569,285
LIABILITIES AND EQUITY
Current liabilities
Accounts and notes payable	$	307,116		$	235,329
Accrued liabilities	312,985			287,313
Total current liabilities	620,101			522,642
Long-term debt, net	758,453			758,148
Deferred income taxes	664,987			575,603
Other liabilities	139,587			150,961
Total liabilities	2,183,128			2,007,354
Commitments and contingencies (Notes 8 and 18)
Stockholders' equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized; no shares issued and outstanding	—			—
Common stock, $0.01 par value, 300,000,000 shares authorized; 134,651,380 and 134,663,244 shares issued at June 30, 2016 and December 31, 2015, respectively	1,347			1,347
Common stock, held in treasury, at cost; 5,867,617 and 4,444,898 shares at June 30, 2016 and December 31, 2015, respectively	(322,802		)	(258,312		)
Additional paid-in capital	545,797			542,148
Retained earnings	3,296,922			3,109,987
Accumulated other comprehensive loss	(82,101		)	(129,292		)
Total Westlake Chemical Corporation stockholders' equity	3,439,163			3,265,878
Noncontrolling interests	298,273			296,053
Total equity	3,737,436			3,561,931
Total liabilities and equity	$	5,920,564		$	5,569,285

The accompanying notes are an integral part of these consolidated financial statements.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015

	(in thousands of dollars, except per share data and share amounts)
Net sales	$	1,086,061		$	1,185,002		$	2,061,248		$	2,288,533
Cost of sales	844,695			831,821			1,564,297			1,650,806
Gross profit	241,366			353,181			496,951			637,727
Selling, general and administrative expenses	61,428			57,807			114,737			113,073
Income from operations	179,938			295,374			382,214			524,654
Other income (expense)
Interest expense	(5,915		)	(8,958		)	(12,600		)	(18,549		)
Other income, net	8,181			22,058			10,826			31,154
Income before income taxes	182,204			308,474			380,440			537,259
Provision for income taxes	66,584			98,413			135,884			176,791
Net income	115,620			210,061			244,556			360,468
Net income attributable to noncontrolling interests	4,496			4,966			10,304			9,031
Net income attributable to Westlake Chemical Corporation	$	111,124		$	205,095		$	234,252		$	351,437
Earnings per common share attributable to Westlake Chemical Corporation:
Basic	$	0.85		$	1.55		$	1.80		$	2.65
Diluted	$	0.85		$	1.54		$	1.79		$	2.64
Weighted average common shares outstanding:
Basic	129,583,224			132,538,123			129,886,594			132,625,857
Diluted	129,980,527			133,044,975			130,290,521			133,124,697
Dividends per common share	$	0.1815		$	0.1650		$	0.3630		$	0.3300

The accompanying notes are an integral part of these consolidated financial statements.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015

	(in thousands of dollars)
Net income	$	115,620		$	210,061		$	244,556		$	360,468
Other comprehensive (loss) income, net of income taxes
Pension and other post-retirement benefits liability
Pension and other post-retirement reserves adjustment (excluding amortization)	(206		)	(186		)	(206		)	(186		)
Amortization of benefits liability	369			675			703			1,327
Income tax provision on pension and other post-retirement benefits liability	(63		)	(164		)	(191		)	(389		)
Foreign currency translation adjustments	(13,500		)	17,872			9,305			(41,826		)
Available-for-sale investments
Unrealized holding gains on investments	35,545			3,077			59,973			4,703
Reclassification of net realized gains to net income	(1,267		)	(3,795		)	(1,319		)	(3,795		)
Income tax (provision) benefit on available-for-sale investments	(12,316		)	259			(21,074		)	(325		)
Other comprehensive income (loss)	8,562			17,738			47,191			(40,491		)
Comprehensive income	124,182			227,799			291,747			319,977
Comprehensive income attributable to noncontrolling interests, net of tax	4,496			4,966			10,304			9,031
Comprehensive income attributable to Westlake Chemical Corporation	$	119,686		$	222,833		$	281,443		$	310,946

The accompanying notes are an integral part of these consolidated financial statements.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)



	Six Months Ended June 30,
	2016			2015

	(in thousands of dollars)
Cash flows from operating activities
Net income	$	244,556		$	360,468
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	132,964			118,981
Provision for doubtful accounts	403			228
Amortization of debt issuance costs	417			1,002
Stock-based compensation expense	5,084			4,905
Loss from disposition of property, plant and equipment	3,331			890
Gains from sales of securities	(1,319		)	(3,795		)
Gain on acquisition, net of loss on the fair value remeasurement of preexisting equity interest	—			(21,045		)
Impairment of equity method investment	—			4,925
Deferred income taxes	102,990			3,088
Windfall tax benefits from share-based payment arrangements	(319		)	(1,895		)
Loss (income) from equity method investments, net of dividends	279			(1,760		)
Other losses, net	1,210			423
Changes in operating assets and liabilities
Accounts receivable	(72,996		)	(22,380		)
Inventories	(12,719		)	50,115
Prepaid expenses and other current assets	(12,586		)	(10,844		)
Accounts payable	54,394			(2,327		)
Accrued liabilities	(1,617		)	(40,526		)
Other, net	(74,180		)	(5,098		)
Net cash provided by operating activities	369,892			435,355
Cash flows from investing activities
Acquisition of business, net of cash acquired	—			15,782
Additions to property, plant and equipment	(287,160		)	(203,933		)
Proceeds from disposition of assets	105			—
Proceeds from sales and maturities of securities	302,432			15,037
Purchase of securities	(138,422		)	—
Settlements of derivative instruments	(3,372		)	(1,174		)
Net cash used for investing activities	(126,417		)	(174,288		)
Cash flows from financing activities
Debt issuance costs	(9,700		)	—
Dividends paid	(47,317		)	(43,896		)
Distributions to noncontrolling interests	(8,084		)	(7,218		)
Proceeds from exercise of stock options	481			831
Proceeds from issuance of notes payable	3,842			2,392
Repayment of notes payable	(8,626		)	(4,299		)
Repurchase of common stock for treasury	(67,404		)	(62,804		)
Windfall tax benefits from share-based payment arrangements	319			1,895
Net cash used for financing activities	(136,489		)	(113,099		)
Effect of exchange rate changes on cash and cash equivalents	1,486			(2,000		)
Net increase in cash and cash equivalents	108,472			145,968
Cash and cash equivalents at beginning of period	662,525			880,601
Cash and cash equivalents at end of period	$	770,997		$	1,026,569

The accompanying notes are an integral part of these consolidated financial statements.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

1. Basis of Financial Statements

The accompanying unaudited consolidated interim financial statements were prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the "SEC") for interim periods. Accordingly, certain information and footnotes required for complete financial statements under generally accepted accounting principles in the United States ("U.S. GAAP") have not been included. These interim consolidated financial statements should be read in conjunction with the December 31, 2015 financial statements and notes thereto of Westlake Chemical Corporation (the "Company") included in the annual report on Form 10-K for the fiscal year ended December 31, 2015 (the "2015 Form 10-K"), filed with the SEC on February 24, 2016. These financial statements have been prepared in conformity with the accounting principles and practices as disclosed in the notes to the consolidated financial statements of the Company for the fiscal year ended December 31, 2015.

In the opinion of the Company's management, the accompanying unaudited consolidated interim financial statements reflect all adjustments (consisting only of normal recurring adjustments) that are necessary for a fair statement of the Company's financial position as of June 30, 2016, its results of operations for the three and six months ended June 30, 2016 and 2015 and the changes in its cash position for the six months ended June 30, 2016 and 2015.

Results of operations and changes in cash position for the interim periods presented are not necessarily indicative of the results that will be realized for the fiscal year ending December 31, 2016 or any other interim period. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Actual results could differ from those estimates.

Recent Accounting Pronouncements

Revenue from Contracts with Customers (ASU No. 2014-09)

In May 2014, the Financial Accounting Standards Board ("FASB") issued an accounting standards update on a comprehensive new revenue recognition standard that will supersede the existing revenue recognition guidance. The new accounting guidance creates a framework by which an entity will allocate the transaction price to separate performance obligations and recognize revenue when each performance obligation is satisfied. Under the new standard, entities will be required to use judgment and make estimates, including identifying performance obligations in a contract, estimating the amount of variable consideration to include in the transaction price, allocating the transaction price to each separate performance obligation and determining when an entity satisfies its performance obligations. The standard allows for either "full retrospective" adoption, meaning that the standard is applied to all of the periods presented with a cumulative catch-up as of the earliest period presented, or "modified retrospective" adoption, meaning the standard is applied only to the most current period presented in the financial statements with a cumulative catch-up as of the current period. In 2016, the FASB issued various additional authoritative guidance for the new revenue recognition standard. The accounting standard will be effective for reporting periods beginning after December 15, 2017. The Company is in the process of evaluating the impact that the new accounting standard will have on its consolidated financial position, results of operations and cash flows.

Recognition and Measurement of Financial Assets and Financial Liabilities (ASU No. 2016-01)

In January 2016, the FASB issued an accounting standards update making certain changes principally to the current guidance for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. Among other things, the guidance (1) requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value, with changes in fair value recognized in net income; (2) provide entities with a policy election to record equity investments without readily determinable fair values at cost, less impairment, and subsequent adjustments for observable price changes (changes in the basis of these equity investments to be reported in net income); (3) requires an entity that has elected the fair value option for financial liabilities to recognize changes in fair value due to instrument-specific credit risk separately in other comprehensive income; (4) clarified current guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities; and (5) requires specific disclosure pertaining to financial assets and financial liabilities in the financial statements. The accounting standard will be effective for reporting periods beginning after December 15, 2017. The Company is in the process of evaluating the impact that the new accounting guidance will have on its consolidated financial position, results of operations and cash flows.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Leases (ASU No. 2016-02)

In February 2016, the FASB issued an accounting standards update on a new lease standard that will supersede the existing lease guidance. The standard requires a lessee to recognize assets and liabilities related to long-term leases that are classified as operating leases under current guidance on its balance sheet. An asset would be recognized related to the right to use the underlying asset and a liability would be recognized related to the obligation to make lease payments over the term of the lease. The standard also requires expanded disclosures related to leases. The accounting standard will be effective for reporting periods beginning after December 15, 2018. The Company is in the process of evaluating the impact that the new accounting guidance will have on its consolidated financial position, results of operations and cash flows.

Stock Compensation (ASU No. 2016-09)

In March 2016, the FASB issued an accounting standards update to simplify several aspects of the accounting for share-based payment transactions, including income tax consequences, classifications of awards as either equity or liabilities and certain related classifications on the statement of cash flows. In addition, the new guidance permits entities to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards. Forfeitures can be estimated, as required today, or recognized when they occur. The accounting standard will be effective for reporting periods beginning after December 15, 2016 and is not expected to have a material impact on the Company's consolidated financial position, results of operations and cash flows.

Credit Losses (ASU No. 2016-13)

In June 2016, the FASB issued an accounting standards update providing new guidance for the accounting for credit losses on loans and other financial instruments. The new guidance introduces an approach based on expected losses to estimate credit losses on certain types of financial instruments. The standard also modifies the impairment model for available-for-sale debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. The accounting standard will be effective for reporting periods beginning after December 15, 2019. The Company is in the process of evaluating the impact that the new accounting guidance will have on its consolidated financial position, results of operations and cash flows.

Recently Adopted Accounting Standards

Amendments to the Consolidation Analysis (ASU No. 2015-02)

In February 2015, the FASB issued an accounting standards update making certain changes to the current consolidation guidance. The amendments affect both the variable interest entity and voting interest entity consolidation models. The new standard changes the consideration of substantive rights, related party interests and fees paid to the decision maker when applying the variable interest entity consolidation model and eliminates certain guidance for limited partnerships and similar entities under the voting interest consolidation model. The accounting standard is effective for annual periods beginning after December 15, 2015. The Company adopted this accounting standard effective January 1, 2016 and the adoption did not have an impact on the Company's consolidated financial position, results of operations and cash flows.

Simplifying the Presentation of Debt Issuance Costs (ASU No. 2015-03)

In April 2015, the FASB issued an accounting standards update on simplifying the presentation of debt issuance costs, which requires all costs incurred to issue debt to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. The accounting standard is effective for reporting periods beginning after December 15, 2015. The Company adopted this accounting standard effective January 1, 2016. As a result, Other assets, net—Deferred charges and other assets, net and Long-term debt on the consolidated balance sheet as of December 31, 2015 have been adjusted to $167,417 and $758,148, respectively, from the originally reported $173,384 and $764,115, respectively, to reflect the retrospective application of the new accounting guidance. The adoption of this accounting standard did not have an impact on the Company's results of operations and cash flows.

Intangibles—Goodwill and Other—Internal use software (ASU No. 2015-05)

In April 2015, the FASB issued an accounting standards update to provide clarification on accounting for cloud computing arrangements which include a software license. The accounting standard is effective for annual periods beginning after December 15, 2015. The Company adopted this accounting standard, to be applied prospectively, effective January 1, 2016. Consistent with the prospective application of this accounting standard, prior period comparative information was not adjusted.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

The adoption did not have a material impact on the Company's consolidated financial position, results of operations and cash flows.

Simplifying the Accounting for Measurement-Period Adjustments (ASU No. 2015-16)

In September 2015, the FASB issued an accounting standards update that requires an acquirer to recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The guidance requires that the acquirer record, in the same period's financial statements, the effect on earnings of changes in depreciation, amortization or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. The new guidance further requires specific disclosure pertaining to the measurement period adjustments. The accounting standard is effective for reporting periods beginning after December 15, 2015. The Company adopted this accounting standard effective January 1, 2016 and the adoption did not have an impact on the Company's consolidated financial position, results of operations and cash flows.

Balance Sheet Classification of Deferred Taxes (ASU No. 2015-17)

In November 2015, the FASB issued an accounting standards update that requires all deferred tax assets and liabilities, along with any related valuation allowance, to be classified as noncurrent on the balance sheet. As a result, each jurisdiction will now only have one net noncurrent deferred tax asset or liability. The new guidance does not change the existing requirement that only permits offsetting within a jurisdiction. The accounting standard is required to be adopted for reporting periods beginning after December 15, 2016; however, early adoption of this standard is permitted. The Company elected to early adopt this accounting standard, to be applied prospectively, effective January 1, 2016. Consistent with the prospective application of this accounting standard, prior period comparative information was not adjusted. The early adoption of this accounting standard did not have an impact on the Company's results of operations and cash flows.

2. Financial Instruments

Cash Equivalents

The Company had $376,901 and $221,918 of held-to-maturity securities with original maturities of three months or less, primarily consisting of corporate debt securities, classified as cash equivalents at June 30, 2016 and December 31, 2015, respectively. The Company's investments in held-to-maturity securities are held at amortized cost, which approximates fair value.

Available-for-Sale Marketable Securities

Investments in available-for-sale securities were classified as follows:



	June 30, 2016		December 31, 2015
Current	$	352,021	$	520,144
Non-current	109,337		48,081
Total available-for-sale securities	$	461,358	$	568,225

The cost, gross unrealized gains, gross unrealized losses and fair value of the Company's available-for-sale securities were as follows:



	June 30, 2016
	Cost		Gross Unrealized Gains		Gross Unrealized Losses ⁽¹⁾			Fair Value
Debt securities
Corporate bonds	$	219,971	$	1,162	$	(16	)	$	221,117
U.S. government debt ⁽²⁾	72,702		462		—			73,164
Asset-backed securities	57,546		197		(3		)	57,740
Equity securities	60,281		49,194		(138		)	109,337
Total available-for-sale securities	$	410,500	$	51,015	$	(157	)	$	461,358

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)



	December 31, 2015
	Cost		Gross Unrealized Gains		Gross Unrealized Losses ⁽¹⁾			Fair Value
Debt securities
Corporate bonds	$	336,665	$	55	$	(1,076	)	$	335,644
U.S. government debt ⁽²⁾	135,226		2		(374		)	134,854
Asset-backed securities	49,759		2		(115		)	49,646
Equity securities	54,371		466		(6,756		)	48,081
Total available-for-sale securities	$	576,021	$	525	$	(8,321	)	$	568,225

_____________


(1)	All unrealized loss positions were held at a loss for less than 12 months.


(2)	U.S. Treasury obligations, U.S. government agency obligations and U.S government agency mortgage-backed securities.

As of June 30, 2016 and December 31, 2015, net unrealized gains (losses) on the Company's available-for-sale securities of $32,585 and $(4,995), respectively, net of income tax expense (benefit) of $18,273 and $(2,801), respectively, were recorded in accumulated other comprehensive loss. See Note 13 for the fair value hierarchy of the Company's available-for-sale securities.

As of June 30, 2016, the corporate bond securities held by the Company had maturities ranging between one month to five years; the U.S. government debt securities held by the Company, excluding U.S. government agency mortgage-backed securities, had maturities ranging between one to three years; the U.S. government agency mortgage-backed securities held by the Company had maturities of approximately five years; and the asset-backed securities held by the Company had maturities ranging between one to five years.

The proceeds from sales and maturities of available-for-sale securities included in the consolidated statements of cash flows and the gross realized gains and losses included in the consolidated statements of operations are reflected in the table below. The cost of securities sold was determined using the specific identification method.



	Three Months Ended June 30,					Six Months Ended June 30,
	2016			2015		2016			2015
Proceeds from sales and maturities of securities	$	275,573		$	15,037	$	302,432		$	15,037
Gross realized gains	1,280			3,795		1,341			3,795
Gross realized losses	(13		)	—		(22		)	—

3. Accounts Receivable

Accounts receivable consist of the following:



	June 30, 2016			December 31, 2015
Trade customers	$	507,690		$	438,538
Allowance for doubtful accounts	(14,534		)	(14,095		)
	493,156			424,443
Federal and state taxes	69,183			60,748
Other	20,516			23,341
Accounts receivable, net	$	582,855		$	508,532

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

4. Inventories

Inventories consist of the following:



	June 30, 2016		December 31, 2015
Finished products	$	253,828	$	253,338
Feedstock, additives and chemicals	118,262		106,435
Materials and supplies	76,436		74,287
Inventories	$	448,526	$	434,060

5. Property, Plant and Equipment

As of June 30, 2016, the Company had property, plant and equipment, net totaling $3,230,523. The Company assesses these assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable, including when negative conditions such as significant current or projected operating losses exist. Other factors considered by the Company when determining if an impairment assessment is necessary include, but are not limited to, significant changes or projected changes in supply and demand fundamentals (which would have a negative impact on operating rates or margins), new technological developments, new competitors with significant raw material or other cost advantages, adverse changes associated with the U.S. and world economies and uncertainties associated with governmental actions. Long-lived assets assessed for impairment are grouped at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities.

Depreciation expense on property, plant and equipment of $57,930 and $51,263 is included in cost of sales in the consolidated statements of operations for the three months ended June 30, 2016 and 2015, respectively. Depreciation expense on property, plant and equipment of $113,971 and $100,921 is included in cost of sales in the consolidated statements of operations for the six months ended June 30, 2016 and 2015, respectively.

6. Other Assets

Amortization expense on intangible and other assets of $9,394 and $9,455 is included in the consolidated statements of operations for the three months ended June 30, 2016 and 2015, respectively. Amortization expense on intangible and other assets of $19,164 and $18,816 is included in the consolidated statements of operations for the six months ended June 30, 2016 and 2015, respectively.

Goodwill

Goodwill for the Olefins segment was $29,990 at June 30, 2016 and December 31, 2015. Goodwill for the Vinyls segment was $32,026 at June 30, 2016 and December 31, 2015. There were no changes in the carrying amount of goodwill for either operating segment for the six months ended June 30, 2016.

7. Accounts and Notes Payable

Accounts and notes payable consist of the following:



	June 30, 2016		December 31, 2015
Accounts payable	$	305,853	$	229,219
Notes payable to banks	1,263		6,110
Accounts and notes payable	$	307,116	$	235,329

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

8. Long-Term Debt

The Company adopted an accounting standards update to simplify the presentation of debt issuance costs effective January 1, 2016. The standard requires, on a retrospective basis, all costs incurred to issue debt, excluding line-of-credit arrangements, to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability. As a result, Other assets, net—Deferred charges and other assets, net and Long-term debt on the consolidated balance sheet as of December 31, 2015 have been adjusted to $167,417 and $758,148, respectively, from the originally reported $173,384 and $764,115, respectively, to reflect the retrospective application of the new accounting guidance.

Long-term debt consists of the following:



	June 30, 2016							December 31, 2015
	Principal Amount		Unamortized Discount and Debt Issuance Costs			Net Long-term Debt		Principal Amount		Unamortized Discount and Debt Issuance Costs			Net Long-term Debt
3.60% senior notes due 2022	$	250,000	$	(2,061	)	$	247,939	$	250,000	$	(2,232	)	$	247,768
6 ½% senior notes due 2029	100,000		(952		)	99,048		100,000		(989		)	99,011
6 ¾% senior notes due 2032	250,000		(1,943		)	248,057		250,000		(2,002		)	247,998
6 ½% senior notes due 2035 (the "6 ½% GO Zone Senior Notes Due 2035")	89,000		(862		)	88,138		89,000		(884		)	88,116
6 ½% senior notes due 2035 (the "6 ½% IKE Zone Senior Notes Due 2035")	65,000		(618		)	64,382		65,000		(634		)	64,366
Loan related to tax-exempt waste disposal revenue bonds due 2027	10,889		—			10,889		10,889		—			10,889
Long-term debt, net	$	764,889	$	(6,436	)	$	758,453	$	764,889	$	(6,741	)	$	758,148

Revolving Credit Facility

The Company has a $400,000 senior secured revolving credit facility. The facility includes a provision permitting the Company to increase the size of the facility, up to four times, in increments of at least $25,000 each (up to a maximum of $200,000) under certain circumstances if the lenders agree to commit to such an increase. At June 30, 2016, the Company had no borrowings outstanding under the revolving credit facility. Any borrowings under the facility will bear interest at either LIBOR plus a spread ranging from 1.25% to 1.75%, provided that so long as the Company is rated investment grade, the margin for LIBOR loans will not exceed 1.50%, or a base rate plus a spread ranging from 0.00% to 0.50%. The revolving credit facility also requires an unused commitment fee of 0.25% per annum. All interest rates under the facility are subject to monthly grid pricing adjustments based on prior month average daily loan availability. The revolving credit facility matures on July 17, 2019. As of June 30, 2016, the Company had outstanding letters of credit totaling $18,545 and borrowing availability of $369,832 under the revolving credit facility.

Bridge Financing of Pending Acquisition

In connection with the recent announcement of the definitive agreement under which the Company will acquire all of the issued and outstanding shares of common stock of Axiall Corporation, the Company has entered into a commitment letter, dated June 10, 2016, with various lenders pursuant to which such lenders have agreed to provide for a senior unsecured bridge loan facility of up to $1,765,000 in the aggregate. Any amounts borrowed under the senior unsecured bridge loan facility would mature 364 days following the closing of the transaction. The Company paid structuring and other fees of approximately $9,700 during the three months ended June 30, 2016 in connection with the senior unsecured bridge loan facility, which were deferred in prepaid expenses and other current assets on the consolidated balance sheet and are being amortized over the term of the facility to other income, net in the consolidated statement of operations. As of June 30, 2016, there were no outstanding borrowings on the senior unsecured bridge loan facility. See Note 20 for further details regarding the pending acquisition.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

9. Stockholders' Equity

Changes in stockholders' equity for the six months ended June 30, 2016 and 2015 were as follows:



	Common Stock		Common Stock, Held in Treasury			Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Noncontrolling Interests			Total
Balances at December 31, 2015	$	1,347	$	(258,312	)	$	542,148		$	3,109,987		$	(129,292	)	$	296,053		$	3,561,931
Net income	—		—			—			234,252			—			10,304			244,556
Other comprehensive income, net of income taxes:
Pension and other post- retirement benefits liability	—		—			—			—			306			—			306
Foreign currency translation adjustments	—		—			—			—			9,305			—			9,305
Net unrealized holding gains on investments	—		—			—			—			37,580			—			37,580
Common stock repurchased	—		(66,725		)	—			—			—			—			(66,725		)
Shares issued—stock- based compensation	—		2,235			(1,754		)	—			—			—			481
Stock-based compensation, net of tax on stock options exercised	—		—			5,403			—			—			—			5,403
Dividends paid	—		—			—			(47,317		)	—			—			(47,317		)
Distributions to noncontrolling interests	—		—			—			—			—			(8,084		)	(8,084		)
Balances at June 30, 2016	$	1,347	$	(322,802	)	$	545,797		$	3,296,922		$	(82,101	)	$	298,273		$	3,737,436



	Common Stock		Common Stock, Held in Treasury			Additional Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Noncontrolling Interests			Total
Balances at December 31, 2014	$	1,347	$	(96,372	)	$	530,441	$	2,555,528		$	(79,433	)	$	290,377		$	3,201,888
Net income	—		—			—		351,437			—			9,031			360,468
Other comprehensive income (loss), net of income taxes
Pension and other post- retirement benefits liability	—		—			—		—			752			—			752
Foreign currency translation adjustments	—		—			—		—			(41,826		)	—			(41,826		)
Net unrealized holding gains on investments	—		—			—		—			583			—			583
Common stock repurchased	—		(62,804		)	—		—			—			—			(62,804		)
Shares issued—stock- based compensation	—		704			127		—			—			—			831
Stock-based compensation, net of tax on stock options exercised	—		—			6,800		—			—			—			6,800
Dividends paid	—		—			—		(43,896		)	—			—			(43,896		)
Distributions to noncontrolling interests	—		—			—		—			—			(7,218		)	(7,218		)
Noncontrolling interest in acquired business	—		—			—		—			—			1,597			1,597
Balances at June 30, 2015	$	1,347	$	(158,472	)	$	537,368	$	2,863,069		$	(119,924	)	$	293,787		$	3,417,175

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Accumulated Other Comprehensive Loss

Changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 2016 and 2015 were as follows:



	Benefits Liability, Net of Tax			Cumulative Foreign Currency Exchange			Net Unrealized Holding Gains (Losses) on Investments, Net of Tax			Total
Balances at December 31, 2015	$	(8,607	)	$	(115,690	)	$	(4,995	)	$	(129,292	)
Other comprehensive (loss) income before reclassifications	(127		)	9,305			38,425			47,603
Amounts reclassified from accumulated other comprehensive loss (income)	433			—			(845		)	(412		)
Net other comprehensive income for the period	306			9,305			37,580			47,191
Balances at June 30, 2016	$	(8,301	)	$	(106,385	)	$	32,585		$	(82,101	)



	Benefits Liability, Net of Tax			Cumulative Foreign Currency Exchange			Net Unrealized Holding Gains on Investments, Net of Tax			Total
Balances at December 31, 2014	$	(23,442	)	$	(56,224	)	$	233		$	(79,433	)
Other comprehensive (loss) income before reclassifications	(115		)	(41,826		)	3,015			(38,926		)
Amounts reclassified from accumulated other comprehensive loss (income)	867			—			(2,432		)	(1,565		)
Net other comprehensive income (loss) for the period	752			(41,826		)	583			(40,491		)
Balances at June 30, 2015	$	(22,690	)	$	(98,050	)	$	816		$	(119,924	)

The following table provides the details of the amounts reclassified from accumulated other comprehensive income (loss) into net income in the consolidated statements of operations for the six months ended June 30, 2016 and 2015:



Details about Accumulated Other Comprehensive Income (Loss) Components	Location of Reclassification (Income (Expense)) in Consolidated Statements of Operations	Three Months Ended June 30,						Six Months Ended June 30,
		2016			2015			2016			2015
Amortization of pension and other post-retirement items
Net loss	(1)	$	(369	)	$	(675	)	$	(703	)	$	(1,327	)
	Provision for income taxes	142			235			270			460
		(227		)	(440		)	(433		)	(867		)
Net unrealized gains on available-for-sale investments
Realized gain on available-for-sale investments	Other income, net	1,267			3,795			1,319			3,795
	Provision for income taxes	(455		)	(1,363		)	(474		)	(1,363		)
		812			2,432			845			2,432
Total reclassifications for the period		$	585		$	1,992		$	412		$	1,565

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

_____________


(1)	These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost. For additional information, please read Note 11 (Employee Benefits) to the financial statements included in the 2015 Form 10-K.

10. Pension and Post-Retirement Benefit Costs

Defined Benefit Plans

Components of net periodic benefit cost for the Company's pension plans are as follows:



	Three Months Ended June 30,										Six Months Ended June 30,
	2016					2015					2016					2015
	U.S. Plans			Non-U.S. Plans		U.S. Plans			Non-U.S. Plans		U.S. Plans			Non-U.S. Plans		U.S. Plans			Non-U.S. Plans
Service cost	$	—		$	137	$	1		$	414	$	—		$	462	$	29		$	835
Interest cost	493			582		489			525		1,060			1,149		1,032			1,061
Expected return on plan assets	(658		)	—		(705		)	—		(1,460		)	—		(1,524		)	—
Amortization of net loss	337			—		318			261		640			—		609			526
Net periodic benefit cost	$	172		$	719	$	103		$	1,200	$	240		$	1,611	$	146		$	2,422

The Company made no contribution to the U.S. salaried pension plan in the first six months of 2016 and 2015. The Company made no contribution to the U.S. wage pension plan in the first six months of 2016. The Company contributed $349 to the U.S. wage pension plan in the first six months of 2015. The Company's funding policy for its U.S. plans is consistent with the minimum funding requirements of federal law and regulations, and based on preliminary estimates, the Company does not expect to make contributions to either the salaried or wage pension plans for the fiscal year ending December 31, 2016.

Other Post-retirement Benefits

Components of net periodic benefit cost for the Company's other post-retirement benefits are as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
	U.S. Plans		U.S. Plans		U.S. Plans		U.S. Plans
Service cost	$	5	$	6	$	10	$	11
Interest cost	145		149		290		299
Amortization of net loss	32		96		63		192
Net periodic benefit cost	$	182	$	251	$	363	$	502

11. Stock-Based Compensation

Under the Westlake Chemical Corporation 2013 Omnibus Incentive Plan (as amended and restated, the "2013 Plan"), all employees and non-employee directors of the Company, as well as certain individuals who have agreed to become the Company's employees, are eligible for awards. Shares of common stock may be issued as authorized in the 2013 Plan. At the discretion of the administrator of the 2013 Plan, employees and non-employee directors may be granted awards in the form of stock options, stock appreciation rights, stock awards, restricted stock units or cash awards (any of which may be a performance award). Total stock-based compensation expense related to the 2013 Plan was $2,781 and $2,565 for the three months ended June 30, 2016 and 2015, respectively, and $5,084 and $4,905 for the six months ended June 30, 2016 and 2015, respectively.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

12. Derivative Instruments

Commodity Risk Management

The Company uses derivative instruments to reduce price volatility risk on raw materials and products as a substantial portion of its raw materials and products are commodities whose prices fluctuate as market supply and demand fundamentals change. Business strategies to protect against such instability include ethylene product feedstock flexibility and moving downstream into the olefins and vinyls products where pricing is more stable. The Company does not use derivative instruments to engage in speculative activities.

Gains and losses from changes in the fair value of derivative instruments that are not designated as hedging instruments were included in gross profit in the consolidated statements of operations for the three and six months ended June 30, 2016 and 2015.

The exposure on commodity derivatives used for price risk management includes the risk that the counterparty will not pay if the market declines below the established fixed price. In such case, the Company would lose the benefit of the derivative differential on the volume of the commodities covered. In any event, the Company would continue to receive the market price on the actual volume hedged. The Company also bears the risk that it could lose the benefit of market improvements over the fixed derivative price for the term and volume of the derivative instruments (as such improvements would accrue to the benefit of the counterparty).

The fair values of derivative instruments in the Company's consolidated balance sheets were as follows:



	Derivative Assets
	Balance Sheet Location	Fair Value as of
	Balance Sheet Location	June 30, 2016		December 31, 2015
Not designated as hedging instruments
Commodity forward contracts	Accounts receivable, net	$	4,491	$	3,465
Commodity forward contracts	Deferred charges and other assets, net	5,517		2,088
Total derivative assets		$	10,008	$	5,553



	Derivative Liabilities
	Balance Sheet Location	Fair Value as of
	Balance Sheet Location	June 30, 2016		December 31, 2015
Not designated as hedging instruments
Commodity forward contracts	Accrued liabilities	$	2,215	$	9,325
Commodity forward contracts	Other liabilities	5,506		12,437
Total derivative liabilities		$	7,721	$	21,762

The impact of derivative instruments that have not been designated as hedges on the Company's consolidated statements of operations were as follows:



Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivative	Three Months Ended June 30,				Six Months Ended June 30,
Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivative	2016		2015		2016		2015
Commodity forward contracts	Gross profit	$	11,567	$	595	$	15,624	$	4,836

See Note 13 for the fair value of the Company's derivative instruments.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Disclosure about Offsetting Asset and Liability Derivatives

Certain of the Company's derivative instruments are executed under an International Swaps and Derivatives Association ("ISDA") Master Agreement, which permits the Company and a counterparty to aggregate the amounts owed by each party under multiple transactions and replace them with a single net amount payable by one party to the other. The following tables present the Company's derivative assets and derivative liabilities reported on the consolidated balance sheets and derivative assets and derivative liabilities subject to enforceable master netting arrangements.



	Derivative Assets as of
	June 30, 2016		December 31, 2015
Derivative assets subject to enforceable master netting arrangements	$	504	$	—
Derivative assets not subject to enforceable master netting arrangements	5,773		462
Total derivative assets	$	6,277	$	462



	June 30, 2016							December 31, 2015
Offsetting of Derivative Assets	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheet			Net Amounts of Assets Presented in the Consolidated Balance Sheet		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheet			Net Amounts of Assets Presented in the Consolidated Balance Sheet
Commodity forward contracts	$	4,235	$	(3,731	)	$	504	$	5,091	$	(5,091	)	$	—



	June 30, 2016						December 31, 2015
Derivative Assets by Counterparty	Net Amounts of Assets Presented in the Consolidated Balance Sheet		Gross Amounts Not Offset in the Consolidated Balance Sheet		Net Amount		Net Amounts of Assets Presented in the Consolidated Balance Sheet		Gross Amounts Not Offset in the Consolidated Balance Sheet		Net Amount
Counterparty A	$	414	$	—	$	414	$	—	$	—	$	—
Counterparty B	90		—		90		—		—		—
Total	$	504	$	—	$	504	$	—	$	—	$	—



	Derivative Liabilities as of
	June 30, 2016		December 31, 2015
Derivative liabilities subject to enforceable master netting arrangements	$	290	$	5,803
Derivative liabilities not subject to enforceable master netting arrangements	3,700		10,868
Total derivative liabilities	$	3,990	$	16,671



	June 30, 2016							December 31, 2015
Offsetting of Derivative Liabilities	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheet			Net Amounts of Liabilities Presented in the Consolidated Balance Sheet		Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheet			Net Amounts of Liabilities Presented in the Consolidated Balance Sheet
Commodity forward contracts	$	4,021	$	(3,731	)	$	290	$	10,894	$	(5,091	)	$	5,803

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)



	June 30, 2016						December 31, 2015
Derivative Liabilities by Counterparty	Net Amounts of Liabilities Presented in the Consolidated Balance Sheet		Gross Amounts Not Offset in the Consolidated Balance Sheet		Net Amount		Net Amounts of Liabilities Presented in the Consolidated Balance Sheet		Gross Amounts Not Offset in the Consolidated Balance Sheet		Net Amount
Counterparty A	$	290	$	—	$	290	$	5,564	$	—	$	5,564
Counterparty B	—		—		—		239		—		239
Total	$	290	$	—	$	290	$	5,803	$	—	$	5,803

13. Fair Value Measurements

The Company reports certain assets and liabilities at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). Under the accounting guidance for fair value measurements, inputs used to measure fair value are classified in one of three levels:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

The following tables summarize, by level within the fair value hierarchy, the Company's assets and liabilities that were accounted for at fair value on a recurring basis:



	June 30, 2016
	Level 1			Level 2			Total
Derivative instruments
Risk management assets—Commodity forward contracts	$	1,607		$	8,401		$	10,008
Risk management liabilities—Commodity forward contracts	(7,348		)	(373		)	(7,721		)
Marketable securities
Available-for-sale securities	109,337			352,021			461,358

	December 31, 2015
	Level 1			Level 2			Total
Derivative instruments
Risk management assets—Commodity forward contracts	$	5,553		$	—		$	5,553
Risk management liabilities—Commodity forward contracts	(11,648		)	(10,114		)	(21,762		)
Marketable securities
Available-for-sale securities	48,081			520,144			568,225

The Level 2 measurements for the Company's commodity contracts are derived using forward curves supplied by industry-recognized and unrelated third-party services. The Level 2 measurements for the Company's available-for-sale securities are derived using market-based pricing provided by unrelated third-party services.

There were no transfers in or out of Levels 1 and 2 of the fair value hierarchy for the six months ended June 30, 2016 and 2015.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

In addition to the financial assets and liabilities above, the Company has other financial assets and liabilities subject to fair value measures. These financial assets and liabilities include cash and cash equivalents, accounts receivable, net, accounts and notes payable and long-term debt, all of which are recorded at carrying value. The amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable, net and accounts and notes payable approximate their fair value due to the short maturities of these instruments. The carrying and fair values of the Company's long-term debt are summarized in the table below. The Company's long-term debt instruments are publicly-traded. A market approach, based upon quotes from financial reporting services, is used to measure the fair value of the Company's long-term debt. Because the Company's long-term debt instruments may not be actively traded, the inputs used to measure the fair value of the Company's long-term debt are classified as Level 2 inputs within the fair value hierarchy.



	June 30, 2016				December 31, 2015
	Carrying Value		Fair Value		Carrying Value		Fair Value
3.60% senior notes due 2022	$	247,939	$	251,523	$	247,768	$	244,828
6 ½% senior notes due 2029	99,048		120,125		99,011		117,153
6 ¾% senior notes due 2032	248,057		268,790		247,998		268,490
6 ½% GO Zone Senior Notes Due 2035	88,138		107,025		88,116		106,491
6 ½% IKE Zone Senior Notes Due 2035	64,382		78,127		64,366		76,741
Loan related to tax-exempt waste disposal revenue bonds due 2027	10,889		10,889		10,889		10,889

The carrying values of the Company's long-term debt as of December 31, 2015 have been adjusted to reflect the retrospective application of the accounting standards update on simplifying the presentation of debt issuance costs discussed in Note 8.

14. Income Taxes

The Company elected to early adopt an accounting standards update requiring the noncurrent classification of all deferred tax assets and liabilities, along with any related valuation allowance, effective January 1, 2016. As a result, the Company's deferred tax assets and liabilities have been classified, by jurisdiction, as a net noncurrent deferred tax asset or liability on the consolidated balance sheet. Consistent with the prospective application of this accounting standard, prior period comparative information was not adjusted.

The effective income tax rate was 36.5% for the three months ended June 30, 2016. The effective tax rate for the 2016 period was above the U.S. federal statutory rate of 35.0% primarily due to state income taxes, partially offset by the domestic manufacturing deduction and income attributable to noncontrolling interests. The effective income tax rate was 31.9% for the three months ended June 30, 2015. The effective income tax rate for the 2015 period was below the U.S. federal statutory rate of 35.0% primarily due to the benefit of state tax credits, the domestic manufacturing deduction, income attributable to noncontrolling interests, the non-recognition of tax related to the bargain purchase of a controlling interest in Suzhou Huasu Plastics Co., Ltd. ("Huasu") and the foreign earnings rate differential, partially offset by state income taxes.

The effective income tax rate was 35.7% for the six months ended June 30, 2016. The effective tax rate for the 2016 period was above the U.S. federal statutory rate of 35.0% primarily due to state income taxes, partially offset by the domestic manufacturing deduction, income attributable to noncontrolling interests and the foreign earnings rate differential. The effective income tax rate was 32.9% for the six months ended June 30, 2015. The effective income tax rate for the 2015 period was below the U.S. federal statutory rate of 35.0% primarily due to the benefit of state tax credits, the domestic manufacturing deduction, income attributable to noncontrolling interests, the non-recognition of tax related to the bargain purchase of a controlling interest in Huasu and the foreign earnings rate differential, partially offset by state income taxes.

There were no unrecognized tax benefits for the six months ended June 30, 2016. The Company recognizes penalties and interest accrued related to unrecognized tax benefits in income tax expense. As of June 30, 2016, the Company had no accrued interest and penalties related to uncertain tax positions.

The Company files income tax returns in the U.S. federal jurisdiction, various states and foreign jurisdictions. The Company is no longer subject to examinations by tax authorities before the year 2010.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

For the six months ended June 30, 2016, the Company is in a deferred tax asset position related to outside basis differences in its foreign subsidiaries. The Company will assess whether it will permanently reinvest its foreign subsidiaries' undistributed earnings in connection with the recent announcement of the definitive agreement under which the Company will acquire all of the issued and outstanding shares of common stock of Axiall Corporation. See Note 20 for further details regarding the pending acquisition.

15. Earnings per Share

The Company has unvested shares of restricted stock and restricted stock units outstanding that are considered participating securities and, therefore, computes basic and diluted earnings per share under the two-class method. Basic earnings per share for the periods are based upon the weighted average number of shares of common stock outstanding during the periods. Diluted earnings per share include the effect of certain stock options.



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Net income attributable to Westlake Chemical Corporation	$	111,124		$	205,095		$	234,252		$	351,437
Less:
Net income attributable to participating securities	(504		)	(253		)	(1,054		)	(457		)
Net income attributable to common shareholders	$	110,620		$	204,842		$	233,198		$	350,980

The following table reconciles the denominator for the basic and diluted earnings per share computations shown in the consolidated statements of operations:



	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Weighted average common shares—basic	129,583,224		132,538,123		129,886,594		132,625,857
Plus incremental shares from:
Assumed exercise of options	397,303		506,852		403,927		498,840
Weighted average common shares—diluted	129,980,527		133,044,975		130,290,521		133,124,697

Earnings per common share attributable to Westlake Chemical Corporation:
Basic	$	0.85	$	1.55	$	1.80	$	2.65
Diluted	$	0.85	$	1.54	$	1.79	$	2.64

Excluded from the computation of diluted earnings per share are options to purchase 695,040 and 330,315 shares of common stock for the three months ended June 30, 2016 and 2015, respectively, and 625,494 and 285,933 shares of common stock for the six months ended June 30, 2016 and 2015, respectively. These options were outstanding during the periods reported but were excluded because the effect of including them would have been antidilutive.

16. Supplemental Information

Accrued Liabilities

Accrued liabilities were $312,985 and $287,313 at June 30, 2016 and December 31, 2015, respectively. Accrued capital expenditures, accrued incentive compensation and accrued rebates, which are components of accrued liabilities, were $52,171, $34,813 and $31,691 at June 30, 2016, respectively, and $21,597, $41,168 and $46,460 at December 31, 2015, respectively. No other component of accrued liabilities was more than five percent of total current liabilities.

Other Liabilities

Other liabilities were $139,587 and $150,961 at June 30, 2016 and December 31, 2015, respectively. Non-current pension obligation, which is a component of other liabilities, was $105,554 and $106,250 at June 30, 2016 and December 31, 2015, respectively. No other component of other liabilities was more than five percent of total liabilities.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Other Income, Net



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Interest income	$	3,084		$	866		$	6,363		$	1,751
Dividend income	3,845			1,357			4,274			3,329
Foreign exchange currency gains (losses), net	400			(500		)	(1,154		)	1,871
Income (loss) from equity method investments	988			(350		)	2,389			4,613
Impairment of equity method investment	—			(4,925		)	—			(4,925		)
Gain on acquisition and related expenses, net	—			20,430			—			20,430
Gains from sales of securities, net	1,267			3,795			1,319			3,795
Other	(1,403		)	1,385			(2,365		)	290
Other income, net	$	8,181		$	22,058		$	10,826		$	31,154

17. Insurance Recovery

During the second and third quarters of 2015, the Company's production rates and operating costs at its Knapsack, Germany and Cologne, Germany facilities were negatively impacted due to an interruption of feedstock supply as a result of a fire at a third-party supplier's ethylene production facility. During the six months ended June 30, 2016, the Company received a final insurance recovery of approximately $2,670 related to business interruption costs. The insurance recovery is included in cost of sales in the consolidated statement of operations. The Company had received and recognized approximately $7,809 as a partial insurance recovery during the year ended December 31, 2015.

18. Commitments and Contingencies

The Company is subject to environmental laws and regulations that can impose civil and criminal sanctions and that may require it to mitigate the effects of contamination caused by the release or disposal of hazardous substances into the environment. Under one law, the U.S. Comprehensive Environmental Response, Compensation, and Liability Act ("CERCLA"), an owner or operator of property may be held strictly liable for remediating contamination without regard to whether that person caused the contamination, and without regard to whether the practices that resulted in the contamination were legal at the time they occurred. Because several of the Company's production sites have a history of industrial use, it is impossible to predict precisely what effect these legal requirements will have on the Company.

European Regulations. Under the Industrial Emission Directive ("IED"), European Union member state governments are expected to adopt rules and implement environmental permitting programs relating to air, water and waste for industrial facilities. In this context, concepts such as BAT ("best available technique") are being explored. Future implementation of these concepts may result in technical modifications in the Company's European facilities. In addition, under the Environmental Liability Directive, European Union member states can require the remediation of soil and groundwater contamination in certain circumstances, under the "polluter pays principle." The Company is unable to predict the impact these requirements and concepts may have on its future costs of compliance.

Contract Disputes with Goodrich and PolyOne. In connection with the 1990 and 1997 acquisitions of the Goodrich Corporation ("Goodrich") chemical manufacturing facility in Calvert City, Kentucky, Goodrich agreed to indemnify the Company for any liabilities related to preexisting contamination at the site. For its part, the Company agreed to indemnify Goodrich for post-closing contamination caused by the Company's operations. The soil and groundwater at the site, which does not include the Company's nearby polyvinyl chloride ("PVC") facility, had been extensively contaminated under Goodrich's operations. In 1993, Goodrich spun off the predecessor of PolyOne Corporation ("PolyOne"), and that predecessor assumed Goodrich's indemnification obligations relating to preexisting contamination.

In 2003, litigation arose among the Company, Goodrich and PolyOne with respect to the allocation of the cost of remediating contamination at the site. The parties settled this litigation in December 2007 and the case was dismissed. In the settlement the parties agreed that, among other things: (1) PolyOne would pay 100% of the costs (with specified exceptions), net of recoveries or credits from third parties, incurred with respect to environmental issues at the Calvert City site from August 1, 2007 forward; (2) either the Company or PolyOne might, from time to time in the future (but not more than once every five years), institute an arbitration proceeding to adjust that percentage; and (3) the Company and PolyOne would

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

negotiate a new environmental remediation utilities and services agreement to cover the Company's provision to, or on behalf of, PolyOne of certain environmental remediation services at the site. The current environmental remediation activities at the Calvert City site do not have a specified termination date but are expected to last for the foreseeable future. The costs incurred by the Company that have been invoiced to PolyOne to provide the environmental remediation services were $2,210 in 2015. By letter dated March 16, 2010, PolyOne notified the Company that it was initiating an arbitration proceeding under the settlement agreement. In this proceeding, PolyOne sought to readjust the percentage allocation of costs and to recover approximately $1,400 from the Company in reimbursement of previously paid remediation costs. In December 2015, the arbitration panel dismissed the proceeding with prejudice. In a separate proceeding in Ohio state court, the Company is seeking certain insurance documents from PolyOne.

State Administrative Proceedings. There are several administrative proceedings in Kentucky involving the Company, Goodrich and PolyOne related to the same manufacturing site in Calvert City. In 2003, the Kentucky Environmental and Public Protection Cabinet (the "Cabinet") re-issued Goodrich's Resource Conservation and Recovery Act ("RCRA") permit which requires Goodrich to remediate contamination at the Calvert City manufacturing site. Both Goodrich and PolyOne challenged various terms of the permit in an attempt to shift Goodrich's clean-up obligations under the permit to the Company. The Company intervened in the proceedings. The Cabinet has suspended all corrective action under the RCRA permit in deference to a remedial investigation and feasibility study ("RIFS") being conducted, under the auspices of the U.S. Environmental Protection Agency ("EPA"), pursuant to an Administrative Settlement Agreement ("AOC"), which became effective on December 9, 2009. See "Federal Administrative Proceedings" below. The proceedings have been postponed. Periodic status conferences will be held to evaluate whether additional proceedings will be required.

Federal Administrative Proceedings. In May 2009, the Cabinet sent a letter to the EPA requesting the EPA's assistance in addressing contamination at the Calvert City site under CERCLA. In its response to the Cabinet also in May 2009, the EPA stated that it concurred with the Cabinet's request and would incorporate work previously conducted under the Cabinet's RCRA authority into the EPA's cleanup efforts under CERCLA. Since 1983, the EPA has been addressing contamination at an abandoned landfill adjacent to the Company's plant which had been operated by Goodrich and which was being remediated pursuant to CERCLA. The EPA has directed Goodrich and PolyOne to conduct additional investigation activities at the landfill and at the Company's plant. In June 2009, the EPA notified the Company that the Company may have potential liability under section 107(a) of CERCLA at its plant site. Liability under section 107(a) of CERCLA is strict and joint and several. The EPA also identified Goodrich and PolyOne, among others, as potentially responsible parties at the plant site. The Company negotiated, in conjunction with the other potentially responsible parties, an AOC and an order to conduct a RIFS. On July 12, 2013, the parties submitted separate draft RIFS reports to the EPA. The EPA has hired a contractor to complete the remedial investigation report.

Monetary Relief. Except as noted above with respect to the settlement of the contract litigation among the Company, Goodrich and PolyOne, none of the court, the Cabinet nor the EPA has established any allocation of the costs of remediation among the various parties that are involved in the judicial and administrative proceedings discussed above. At this time, the Company is not able to estimate the loss or reasonable possible loss, if any, on the Company's financial statements that could result from the resolution of these proceedings. Any cash expenditures that the Company might incur in the future with respect to the remediation of contamination at the site would likely be spread out over an extended period. As a result, the Company believes it is unlikely that any remediation costs allocable to it will be material in terms of expenditures made in any individual reporting period.

Potential Flare Modifications. For several years, the EPA has been conducting an enforcement initiative against petroleum refineries and petrochemical plants with respect to emissions from flares. A number of companies have entered into consent agreements with the EPA requiring both modifications to reduce flare emissions and the installation of additional equipment to better track flare operations and emissions. On April 21, 2014, the Company received a Clean Air Act Section 114 Information Request from the EPA which sought information regarding flares at the Calvert City and Lake Charles, Louisiana facilities. The EPA has informed the Company that the information provided leads the EPA to believe that some of the flares are out of compliance with applicable standards. The EPA has demanded that the Company conduct additional flare sampling and provide supplemental information. The Company is currently in negotiations with the EPA regarding these demands. The EPA has indicated that it is seeking a consent decree that would obligate the Company to take corrective actions relating to the alleged noncompliance. The Company has not agreed that any flares are out of compliance or that any corrective actions are warranted. Depending on the outcome of the Company's negotiations with the EPA, additional controls on emissions from its flares may be required and these could result in increased capital and operating costs.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Louisiana Notice of Violations. The Louisiana Department of Environmental Quality ("LDEQ") has issued notices of violations ("NOVs") regarding the Company's assets for various air compliance issues. The Company is working with LDEQ to settle these claims, and a global settlement of all claims is being discussed. The Company has reached a verbal agreement with the LDEQ to settle certain of the NOVs in two separate settlements for a combined $192 in civil penalties. The Company does not believe that any settlements for the remaining NOVs will have a material adverse effect on the Company's financial condition, results of operations or cash flows.

In addition to the matters described above, the Company is involved in various legal proceedings incidental to the conduct of its business. The Company does not believe that any of these legal proceedings will have a material adverse effect on its financial condition, results of operations or cash flows.

19. Segment Information

The Company operates in two principal operating segments: Olefins and Vinyls. These segments are strategic business units that offer a variety of different products. The Company manages each segment separately as each business requires different technology and marketing strategies.



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Net external sales
Olefins
Polyethylene	$	371,658		$	450,482		$	717,690		$	859,914
Styrene, feedstock and other	122,826			170,396			207,814			344,041
Total Olefins	494,484			620,878			925,504			1,203,955
Vinyls
PVC, caustic soda and other	462,472			429,878			893,374			846,866
Building products	129,105			134,246			242,370			237,712
Total Vinyls	591,577			564,124			1,135,744			1,084,578
	$	1,086,061		$	1,185,002		$	2,061,248		$	2,288,533

Intersegment sales
Olefins	$	27,293		$	26,641		$	55,242		$	50,103
Vinyls	225			387			589			757
	$	27,518		$	27,028		$	55,831		$	50,860

Income (loss) from operations
Olefins	$	140,564		$	220,938		$	289,799		$	412,041
Vinyls	52,208			87,966			114,324			135,052
Corporate and other	(12,834		)	(13,530		)	(21,909		)	(22,439		)
	$	179,938		$	295,374		$	382,214		$	524,654

Depreciation and amortization
Olefins	$	30,236		$	27,623		$	58,933		$	54,562
Vinyls	36,268			32,599			72,555			64,183
Corporate and other	746			118			1,476			236
	$	67,250		$	60,340		$	132,964		$	118,981

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Other income (expense), net
Olefins	$	1,093		$	(104	)	$	2,606		$	2,448
Vinyls	4,466			1,413			2,949			6,916
Corporate and other	2,622			20,749			5,271			21,790
	$	8,181		$	22,058		$	10,826		$	31,154

Provision for (benefit from) income taxes
Olefins	$	51,940		$	74,212		$	104,473		$	140,669
Vinyls	16,297			26,653			33,567			39,458
Corporate and other	(1,653		)	(2,452		)	(2,156		)	(3,336		)
	$	66,584		$	98,413		$	135,884		$	176,791

Capital expenditures
Olefins	$	93,739		$	81,534		$	188,890		$	136,835
Vinyls	56,613			24,569			96,869			61,425
Corporate and other	481			2,007			1,401			5,673
	$	150,833		$	108,110		$	287,160		$	203,933

A reconciliation of total segment income from operations to consolidated income before income taxes is as follows:



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
Income from operations	$	179,938		$	295,374		$	382,214		$	524,654
Interest expense	(5,915		)	(8,958		)	(12,600		)	(18,549		)
Other income, net	8,181			22,058			10,826			31,154
Income before income taxes	$	182,204		$	308,474		$	380,440		$	537,259



	June 30, 2016		December 31, 2015
Total assets
Olefins	$	2,130,028	$	1,869,888
Vinyls	2,734,246		2,638,833
Corporate and other	1,056,290		1,060,564
	$	5,920,564	$	5,569,285

20. Pending Acquisition

On June 10, 2016, the Company entered into an Agreement and Plan of Merger (the "Merger Agreement") with Axiall Corporation ("Axiall") and Lagoon Merger Sub, Inc., a wholly-owned subsidiary of the Company ("Merger Sub"), pursuant to which the Company will acquire all of the issued and outstanding shares of common stock of Axiall for $33.00 per share in cash. The total value of this transaction is approximately $3,800,000, including the assumption of certain Axiall liabilities. Pursuant to the Merger Agreement, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Axiall (the "Merger"). Axiall will survive the Merger as a wholly-owned subsidiary of the Company. Each of the Company's and Axiall's obligation to consummate the Merger is subject to a number of conditions specified in the Merger Agreement. The consummation of the Merger is not subject to a financing condition.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

In connection with the Merger Agreement, the Company has entered into a commitment letter, dated June 10, 2016 (the "Debt Commitment Letter"), with various lenders pursuant to which such lenders have agreed to provide for a senior unsecured bridge loan facility (the "Bridge Facility") of up to $1,765,000 in the aggregate for the purpose of providing the financing necessary to fund a portion of the consideration to be paid pursuant to the terms of the Merger Agreement and related fees and expenses. The funding of the Bridge Facility is contingent on the satisfaction of certain conditions set forth in the Debt Commitment Letter.

21. Subsequent Events

Revolving Credit Facility

On July 21, 2016, the Company entered into a commitment letter (the "Revolver Commitment Letter"), with JPMorgan Chase Bank, N.A. ("JPMorgan"), pursuant to which JPMorgan has agreed to structure, arrange and syndicate a senior unsecured five-year revolving credit facility (the "Revolver") in the aggregate principal amount of $1,000,000 and to commit to provide up to $250,000 of the Revolver. Up to $200,000 of the proposed Revolver would be available for the issuance of letters of credit and up to $50,000 of the Revolver would be available for swing line loans that could be drawn on same-day notice. The Revolver would be used to fund a portion of the consideration to be paid under the Merger Agreement and related fees and expenses, and otherwise for general corporate purposes and working capital needs. The closing of the Revolver is contingent on the satisfaction of certain conditions set forth in the Revolver Commitment Letter, including the receipt of commitments to lend from lenders. Upon the execution of the definitive documentation, the Company expects to terminate its current $400,000 senior secured revolving credit facility.

Senior Notes Offering

On August 3, 2016, the Company priced its private offering of $750,000 aggregate principal amount of 3.60% senior notes due 2026 (the "2026 Senior Notes") and $700,000 aggregate principal amount of 5.0% senior notes due 2046 (the "2046 Senior Notes," and together with the 2026 Senior Notes, the "New Notes"). The New Notes will be the Company's senior obligations and will be guaranteed on a senior basis by certain of the Company's existing and future domestic subsidiaries. The New Notes and guarantees will be unsecured and will rank equally with the Company's existing and future senior unsecured obligations and each guarantor's existing and future senior unsecured obligations. The Company expects to enter into a registration rights agreement in which it will agree to file an exchange offer registration statement or, under specified circumstances, a shelf registration statement, with the SEC with respect to the New Notes. The Company intends to use the net proceeds from the offering to finance the Merger and to repay amounts under the term loan facility dated February 27, 2015 entered into by Axiall Holdco, Inc. (a wholly-owned subsidiary of Axiall), as the borrower, with the financial institutions party thereto.

General

Subsequent events were evaluated through the date on which the financial statements were issued.

22. Guarantor Disclosures

The Company's payment obligations under the 3.60% senior notes due 2022 are fully and unconditionally guaranteed by each of its current and future domestic subsidiaries that guarantee other debt of the Company or of another guarantor of the 3.60% senior notes due 2022 in excess of $5,000 (the "Guarantor Subsidiaries"). Except for Westlake Chemical OpCo LP ("OpCo"), which is less than 100% owned, each Guarantor Subsidiary is 100% owned by Westlake Chemical Corporation (the "100% Owned Guarantor Subsidiaries"). The August 4, 2014 initial public offering of Westlake Chemical Partners LP ("Westlake Partners") resulted in OpCo ceasing to be a 100% owned subsidiary of the Company. These guarantees are the joint and several obligations of the Guarantor Subsidiaries. The following unaudited condensed consolidating financial information presents the financial condition, results of operations and cash flows of Westlake Chemical Corporation, the 100% owned Guarantor Subsidiaries, OpCo and the remaining subsidiaries that do not guarantee the 3.60% senior notes due 2022 (the "Non-Guarantor Subsidiaries"), together with consolidating eliminations necessary to present the Company's results on a consolidated basis.

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information as of June 30, 2016



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	412,881	$	1,095	$	142,339	$	214,682	$	—		$	770,997
Marketable securities	352,021		—		—		—		—			352,021
Accounts receivable, net	15,228		2,306,348		68,738		136,839		(1,944,298		)	582,855
Inventories	—		348,372		2,493		97,661		—			448,526
Prepaid expenses and other current assets	11,126		15,861		73		12,820		(4,238		)	35,642
Total current assets	791,256		2,671,676		213,643		462,002		(1,948,536		)	2,190,041
Property, plant and equipment, net	—		1,606,327		1,203,249		420,947		—			3,230,523
Equity investments	5,269,364		1,211,547		—		471,900		(6,943,882		)	8,929
Other assets, net	59,169		587,816		126,424		129,944		(412,282		)	491,071
Total assets	$	6,119,789	$	6,077,366	$	1,543,316	$	1,484,793	$	(9,304,700	)	$	5,920,564
Current liabilities
Accounts and notes payable	$	1,924,189	$	116,376	$	93,294	$	91,435	$	(1,918,178	)	$	307,116
Accrued liabilities	8,873		164,520		75,405		94,545		(30,358		)	312,985
Total current liabilities	1,933,062		280,896		168,699		185,980		(1,948,536		)	620,101
Long-term debt	747,564		10,889		379,997		—		(379,997		)	758,453
Deferred income taxes	—		618,716		1,712		48,596		(4,037		)	664,987
Other liabilities	—		67,744		—		100,091		(28,248		)	139,587
Total liabilities	2,680,626		978,245		550,408		334,667		(2,360,818		)	2,183,128
Total Westlake Chemical Corporation stockholders' equity	3,439,163		5,099,121		992,908		851,853		(6,943,882		)	3,439,163
Noncontrolling interests	—		—		—		298,273		—			298,273
Total equity	3,439,163		5,099,121		992,908		1,150,126		(6,943,882		)	3,737,436
Total liabilities and equity	$	6,119,789	$	6,077,366	$	1,543,316	$	1,484,793	$	(9,304,700	)	$	5,920,564

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information as of December 31, 2015



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	303,131	$	6,828	$	163,430	$	189,136	$	—		$	662,525
Marketable securities	520,144		—		—		—		—			520,144
Accounts receivable, net	10,943		2,183,276		51,582		113,321		(1,850,590		)	508,532
Inventories	—		326,588		3,879		103,593		—			434,060
Prepaid expenses and other current assets	2,201		12,166		267		2,734		(2,879		)	14,489
Deferred income taxes	702		32,787		—		1,950		—			35,439
Total current assets	837,121		2,561,645		219,158		410,734		(1,853,469		)	2,175,189
Property, plant and equipment, net	—		1,567,897		1,020,469		415,701		—			3,004,067
Equity investments	4,991,167		1,207,679		—		469,915		(6,659,553		)	9,208
Other assets, net	11,929		450,428		44,157		129,539		(255,232		)	380,821
Total assets	$	5,840,217	$	5,787,649	$	1,283,784	$	1,425,889	$	(8,768,254	)	$	5,569,285
Current liabilities
Accounts payable	$	1,817,963	$	121,820	$	33,901	$	87,510	$	(1,825,865	)	$	235,329
Accrued liabilities	9,117		195,785		21,873		88,142		(27,604		)	287,313
Total current liabilities	1,827,080		317,605		55,774		175,652		(1,853,469		)	522,642
Long-term debt	747,259		10,889		248,665		—		(248,665		)	758,148
Deferred income taxes	—		532,837		1,392		47,941		(6,567		)	575,603
Other liabilities	—		49,334		—		101,627		—			150,961
Total liabilities	2,574,339		910,665		305,831		325,220		(2,108,701		)	2,007,354
Total Westlake Chemical Corporation stockholders' equity	3,265,878		4,876,984		977,953		804,616		(6,659,553		)	3,265,878
Noncontrolling interests	—		—		—		296,053		—			296,053
Total equity	3,265,878		4,876,984		977,953		1,100,669		(6,659,553		)	3,561,931
Total liabilities and equity	$	5,840,217	$	5,787,649	$	1,283,784	$	1,425,889	$	(8,768,254	)	$	5,569,285

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information for the Three Months Ended June 30, 2016



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	845,088		$	210,841		$	289,520		$	(259,388	)	$	1,086,061
Cost of sales	—			720,774			122,460			255,846			(254,385		)	844,695
Gross profit	—			124,314			88,381			33,674			(5,003		)	241,366
Selling, general and administrative expenses	950			48,331			5,174			11,976			(5,003		)	61,428
(Loss) income from operations	(950		)	75,983			83,207			21,698			—			179,938
Interest expense	(10,688		)	(13		)	(221		)	(50		)	5,057			(5,915		)
Other income, net	3,587			4,900			159			4,592			(5,057		)	8,181
(Loss) income before income taxes	(8,051		)	80,870			83,145			26,240			—			182,204
(Benefit from) provision for income taxes	(2,960		)	62,396			297			6,851			—			66,584
Equity in net income of subsidiaries	116,215			71,849			—			10,999			(199,063		)	—
Net income	111,124			90,323			82,848			30,388			(199,063		)	115,620
Net income attributable to noncontrolling interests	—			—			—			4,496			—			4,496
Net income attributable to Westlake Chemical Corporation	$	111,124		$	90,323		$	82,848		$	25,892		$	(199,063	)	$	111,124
Comprehensive income attributable to Westlake Chemical Corporation	$	119,686		$	102,001		$	82,848		$	12,392		$	(197,241	)	$	119,686

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information for the Three Months Ended June 30, 2015



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	990,434		$	251,705		$	250,365		$	(307,502	)	$	1,185,002
Cost of sales	—			750,892			157,177			226,283			(302,531		)	831,821
Gross profit	—			239,542			94,528			24,082			(4,971		)	353,181
Selling, general and administrative expenses	399			42,682			5,191			14,506			(4,971		)	57,807
(Loss) income from operations	(399		)	196,860			89,337			9,576			—			295,374
Interest expense	(10,569		)	(4		)	(856		)	(52		)	2,523			(8,958		)
Other income (expense), net	9,776			(9,371		)	34			24,142			(2,523		)	22,058
(Loss) income before income taxes	(1,192		)	187,485			88,515			33,666			—			308,474
(Benefit from) provision for income taxes	(399		)	97,218			(41		)	1,635			—			98,413
Equity in net income of subsidiaries	205,888			76,799			—			11,757			(294,444		)	—
Net income	205,095			167,066			88,556			43,788			(294,444		)	210,061
Net income attributable to noncontrolling interests	—			—			—			4,966			—			4,966
Net income attributable to Westlake Chemical Corporation	$	205,095		$	167,066		$	88,556		$	38,822		$	(294,444	)	$	205,095
Comprehensive income attributable to Westlake Chemical Corporation	$	222,833		$	167,206		$	88,556		$	56,879		$	(312,641	)	$	222,833

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2016



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,629,152		$	463,445		$	552,434		$	(583,783	)	$	2,061,248
Cost of sales	—			1,386,241			264,650			486,718			(573,312		)	1,564,297
Gross profit	—			242,911			198,795			65,716			(10,471		)	496,951
Selling, general and administrative expenses	1,557			88,959			10,452			24,240			(10,471		)	114,737
(Loss) income from operations	(1,557		)	153,952			188,343			41,476			—			382,214
Interest expense	(21,099		)	(16		)	(472		)	(128		)	9,115			(12,600		)
Other income, net	5,402			11,343			243			2,953			(9,115		)	10,826
(Loss) income before income taxes	(17,254		)	165,279			188,114			44,301			—			380,440
(Benefit from) provision for income taxes	(6,182		)	129,252			696			12,118			—			135,884
Equity in net income of subsidiaries	245,324			162,536			—			24,882			(432,742		)	—
Net income	234,252			198,563			187,418			57,065			(432,742		)	244,556
Net income attributable to noncontrolling interests	—			—			—			10,304			—			10,304
Net income attributable to Westlake Chemical Corporation	$	234,252		$	198,563		$	187,418		$	46,761		$	(432,742	)	$	234,252
Comprehensive income attributable to Westlake Chemical Corporation	$	281,443		$	222,127		$	187,418		$	56,066		$	(465,611	)	$	281,443

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2015



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,901,365		$	510,096		$	496,007		$	(618,935	)	$	2,288,533
Cost of sales	—			1,485,728			319,341			454,553			(608,816		)	1,650,806
Gross profit	—			415,637			190,755			41,454			(10,119		)	637,727
Selling, general and administrative expenses	812			86,366			10,237			25,777			(10,119		)	113,073
(Loss) income from operations	(812		)	329,271			180,518			15,677			—			524,654
Interest expense	(21,321		)	(5		)	(2,232		)	(94		)	5,103			(18,549		)
Other income (expense), net	16,387			(6,544		)	39			26,375			(5,103		)	31,154
(Loss) income before income taxes	(5,746		)	322,722			178,325			41,958			—			537,259
(Benefit from) provision for income taxes	(1,976		)	175,170			426			3,171			—			176,791
Equity in net income of subsidiaries	355,207			156,690			—			21,209			(533,106		)	—
Net income	351,437			304,242			177,899			59,996			(533,106		)	360,468
Net income attributable to noncontrolling interests	—			—			—			9,031			—			9,031
Net income attributable to Westlake Chemical Corporation	$	351,437		$	304,242		$	177,899		$	50,965		$	(533,106	)	$	351,437
Comprehensive income attributable to Westlake Chemical Corporation	$	310,946		$	304,620		$	177,899		$	9,513		$	(492,032	)	$	310,946

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2016



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income	$	234,252		$	198,563		$	187,418		$	57,065		$	(432,742	)	$	244,556
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	417			71,640			41,182			20,142			—			133,381
Deferred income taxes	(4,802		)	105,828			320			1,644			—			102,990
Net changes in working capital and other	(275,002		)	(194,894		)	(40,445		)	(33,436		)	432,742			(111,035		)
Net cash (used for) provided by operating activities	(45,135		)	181,137			188,475			45,415			—			369,892
Cash flows from investing activities
Additions to property, plant and equipment	—			(101,270		)	(168,533		)	(17,357		)	—			(287,160		)
Proceeds from disposition of assets	—			7			98			—			—			105
Proceeds from sales and maturities of securities	302,432			—			—			—			—			302,432
Purchase of securities	(130,830		)	(7,592		)	—			—			—			(138,422		)
Settlements of derivative instruments	—			(3,372		)	—			—			—			(3,372		)
Net cash provided by (used for) investing activities	171,602			(112,227		)	(168,435		)	(17,357		)	—			(126,417		)
Cash flows from financing activities
Intercompany financing	106,904			(233,536		)	131,832			(5,200		)	—			—
Intercompany financing—OpCo	—			500			(500		)	—			—			—
Debt issuance costs	(9,700		)	—			—			—			—			(9,700		)
Dividends paid	(47,317		)	—			—			—			—			(47,317		)
Distributions paid	—			158,393			(172,463		)	5,986			—			(8,084		)
Proceeds from exercise of stock options	481			—			—			—			—			481
Proceeds from issuance of notes payable	—			—			—			3,842			—			3,842
Repayment of notes payable	—			—			—			(8,626		)	—			(8,626		)
Repurchase of common stock for treasury	(67,404		)	—			—			—			—			(67,404		)
Windfall tax benefits from share-based payment arrangements	319			—			—			—			—			319
Net cash used for financing activities	(16,717		)	(74,643		)	(41,131		)	(3,998		)	—			(136,489		)

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries		Eliminations		Consolidated
Effect of exchange rate changes on cash and cash equivalents	—		—			—			1,486		—		1,486
Net increase (decrease) in cash and cash equivalents	109,750		(5,733		)	(21,091		)	25,546		—		108,472
Cash and cash equivalents at beginning of period	303,131		6,828			163,430			189,136		—		662,525
Cash and cash equivalents at end of period	$	412,881	$	1,095		$	142,339		$	214,682	$	—	$	770,997

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)

Condensed Consolidating Financial Information for the Six Months Ended June 30, 2015



	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income	$	351,437		$	304,242		$	177,899		$	59,996		$	(533,106	)	$	360,468
Adjustments to reconcile net income to net cash (used for) provided by operating activities
Depreciation and amortization	1,002			59,792			40,195			18,994			—			119,983
Deferred income taxes	(40		)	929			(234		)	2,433			—			3,088
Net changes in working capital and other	(371,716		)	(310,600		)	15,748			85,278			533,106			(48,184		)
Net cash (used for) provided by operating activities	(19,317		)	54,363			233,608			166,701			—			435,355
Cash flows from investing activities
Acquisition of business, net of cash acquired	—			—			—			15,782			—			15,782
Additions to property, plant and equipment	—			(95,363		)	(95,514		)	(13,056		)	—			(203,933		)
Proceeds from sales and maturities of securities	15,037			—			—			—			—			15,037
Settlements of derivative instruments	—			(1,174		)	—			—			—			(1,174		)
Net cash provided by (used for) investing activities	15,037			(96,537		)	(95,514		)	2,726			—			(174,288		)
Cash flows from financing activities
Intercompany financing	208,692			(269,281		)	53,354			7,235			—			—
Intercompany financing—OpCo	—			135,341			(135,341		)	—			—			—
Dividends paid	(43,896		)	—			—			—			—			(43,896		)
Distributions paid	—			176,980			(189,103		)	4,905			—			(7,218		)
Purchase of limited partner interests	—			—			135,341			(135,341		)	—			—
Proceeds from exercise of stock options	831			—			—			—			—			831
Proceeds from issuance of notes payable	—			—			—			2,392			—			2,392
Repayment of notes payable	—			—			—			(4,299		)	—			(4,299		)
Repurchase of common stock for treasury	(62,804		)	—			—			—			—			(62,804		)
Windfall tax benefits from share-based payment arrangements	1,895			—			—			—			—			1,895
Net cash provided by (used for) financing activities	104,718			43,040			(135,749		)	(125,108		)	—			(113,099		)

Table of Contents

WESTLAKE CHEMICAL CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—Continued

(Unaudited)

(in thousands of dollars, except share amounts and per share data)



	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries			Eliminations		Consolidated
Effect of exchange rate changes on cash and cash equivalents	—		—		—		(2,000		)	—		(2,000		)
Net increase in cash and cash equivalents	100,438		866		2,345		42,319			—		145,968
Cash and cash equivalents at beginning of period	655,947		3,057		131,545		90,052			—		880,601
Cash and cash equivalents at end of period	$	756,385	$	3,923	$	133,890	$	132,371		$	—	$	1,026,569

Table of Contents


Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations

This discussion and analysis should be read in conjunction with information contained in the accompanying unaudited consolidated interim financial statements of Westlake Chemical Corporation and the notes thereto and the consolidated financial statements and notes thereto of Westlake Chemical Corporation included in Westlake Chemical Corporation's Annual Report on Form 10-K for the fiscal year ended December 31, 2015 (the "2015 Form 10-K"). The following discussion contains forward-looking statements. Please read "Forward-Looking Statements" for a discussion of limitations inherent in such statements.

We are a vertically integrated global manufacturer and marketer of basic chemicals, vinyls, polymers and building products. Our two principal operating segments are Olefins and Vinyls. We are highly integrated along our olefins product chain with significant downstream integration into polyethylene and styrene monomer. We are also an integrated global producer of vinyls with substantial downstream integration into polyvinyl chloride ("PVC") building products.

Since 2009 and continuing through the second quarter of 2016, a cost advantage for ethane-based ethylene producers over naphtha-based ethylene producers has allowed a strong export market for polyethylene, ethylene derivatives and higher margins for North American chemical producers, including Westlake. Continued strong global demand for polyethylene has resulted in improved operating margins and cash flow for our Olefins segment in recent years. However, we have seen a significant reduction in the cost advantage enjoyed by North American ethane-based ethylene producers due to lower crude oil prices, beginning in the third quarter of 2014 and continuing through the second quarter of 2016. Falling crude oil prices have resulted in reduced prices and margins and may continue to do so. However, our European operations rely primarily on feedstock derived from naphtha-based ethylene crackers and may benefit from lower crude oil prices. Looking forward, new olefins capacity additions in Asia, the Middle East and North America, a number of which have been announced in recent years, may lead to periods of over-supply and lower profitability.

Continued slow recovery in the U.S. construction markets and budgetary constraints in municipal spending have contributed to lower North American demand for our vinyls products, which may continue to negatively impact our Vinyls segment operating rates and margins. Likewise, European industry production capacities currently exceed demand in the region, largely due to the weak economic environment in Europe. However, since late 2010, the PVC industry in North America has experienced an increase in PVC resin export demand, driven largely by more competitive feedstock and energy cost positions in North America. As a consequence, North American PVC resin industry operating rates have improved since 2010, largely due to higher PVC resin export shipments. In addition, the completion of our world-scale Geismar, Louisiana chlor-alkali plant and the ethane feedstock conversion and ethylene expansion project at Westlake Chemical OpCo LP's ("OpCo") Calvert City, Kentucky ethylene plant in 2013 and 2014, respectively, as well as the July 2014 acquisition of Vinnolit Holdings GmbH and its subsidiary companies ("Vinnolit"), an integrated global leader in specialty PVC resins, have contributed to improved operating margins and cash flow for our Vinyls segment.

The economic environment in the United States and globally appears to be slowly improving. However, depending on the performance of the global economy in the remainder of 2016 and beyond, our financial condition, results of operations or cash flows could be negatively impacted. In addition, the European economy has been slower to recover than the U.S. economy.

Recent Developments

On June 10, 2016, we entered into an Agreement and Plan of Merger (the "Merger Agreement") with Axiall Corporation ("Axiall") and Lagoon Merger Sub, Inc., our wholly-owned subsidiary ("Merger Sub"), pursuant to which we will acquire all of the issued and outstanding shares of common stock of Axiall for $33.00 per share in cash. The total value of this transaction is approximately $3.8 billion, including the assumption of certain Axiall liabilities. Pursuant to the Merger Agreement, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Axiall (the "Merger"). Axiall will survive the Merger as our wholly-owned subsidiary. Each of our and Axiall's obligation to consummate the Merger is subject to a number of conditions specified in the Merger Agreement. The consummation of the Merger is not subject to a financing condition.

In connection with the Merger Agreement, we entered into a commitment letter, dated June 10, 2016 (the "Debt Commitment Letter"), with various lenders pursuant to which such lenders have agreed to provide for a senior unsecured bridge loan facility (the "Bridge Facility") of up to $1.765 billion in the aggregate for the purpose of providing the financing necessary to fund a portion of the consideration to be paid pursuant to the terms of the Merger Agreement and related fees and expenses. The funding of the Bridge Facility is contingent on the satisfaction of certain conditions set forth in the Debt Commitment Letter.

Table of Contents

On August 3, 2016, we priced a private offering of $750.0 million aggregate principal amount of 3.60% senior notes due 2026 (the "2026 Senior Notes") and $700.0 million aggregate principal amount of 5.0% senior notes due 2046 (the "2046 Senior Notes," and together with the 2026 Senior Notes, the "New Notes").

On July 21, 2016, we entered into a commitment letter (the "Revolver Commitment Letter"), with JPMorgan Chase Bank, N.A. ("JPMorgan"), pursuant to which JPMorgan has agreed to structure, arrange and syndicate a senior unsecured five-year revolving credit facility (the "Revolver") in the aggregate principal amount of $1.0 billion and to commit to provide up to $250.0 million of the Revolver. Upon the execution of the definitive documentation, we expect to terminate our current $400.0 million senior secured revolving credit facility.

See Note 21 for further information relating to the New Notes and the Revolver Commitment Letter.

In July 2016, OpCo completed planned major maintenance activities, or a turnaround, of its Petro 1 ethylene unit at our Lake Charles, Louisiana site. In conjunction with this turnaround, OpCo also completed an upgrade and capacity expansion of the Petro 1 ethylene unit. The Petro 1 expansion project is expected to increase ethylene capacity by approximately 250 million pounds annually. Income from operations for the second quarter of 2016 was, and income from operations for the third quarter of 2016 will be, negatively impacted as a result of the lost production, unabsorbed fixed manufacturing costs and other costs related to the planned turnaround and expansion.

On July 18, 2016, we announced that our Calvert City facility was in the process of restarting as a result of an unexpected shut down that occurred on June 1, 2016. The unplanned outage was caused by a mechanical failure of OpCo's ethylene unit, which resulted in a complete outage of the facility and halted all production including the production of ethylene dichloride ("EDC"), vinyl chloride monomer ("VCM"), chlor-alkali and PVC resin. Income from operations for the second quarter of 2016 was, and income from operations for the third quarter of 2016 will be, negatively impacted as a result of the lost production, unabsorbed fixed manufacturing costs and other costs related to the unplanned outage.

Table of Contents

Results of Operations



	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015

	(dollars in thousands, except per share data)
Net external sales
Olefins
Polyethylene	$	371,658		$	450,482		$	717,690		$	859,914
Styrene, feedstock and other	122,826			170,396			207,814			344,041
Total Olefins	494,484			620,878			925,504			1,203,955
Vinyls
PVC, caustic soda and other	462,472			429,878			893,374			846,866
Building products	129,105			134,246			242,370			237,712
Total Vinyls	591,577			564,124			1,135,744			1,084,578
Total	$	1,086,061		$	1,185,002		$	2,061,248		$	2,288,533

Income (loss) from operations
Olefins	$	140,564		$	220,938		$	289,799		$	412,041
Vinyls	52,208			87,966			114,324			135,052
Corporate and other	(12,834		)	(13,530		)	(21,909		)	(22,439		)
Total income from operations	179,938			295,374			382,214			524,654
Interest expense	(5,915		)	(8,958		)	(12,600		)	(18,549		)
Other income, net	8,181			22,058			10,826			31,154
Provision for income taxes	66,584			98,413			135,884			176,791
Net income	115,620			210,061			244,556			360,468
Net income attributable to noncontrolling interests	4,496			4,966			10,304			9,031
Net income attributable to Westlake Chemical Corporation	$	111,124		$	205,095		$	234,252		$	351,437
Diluted earnings per share	$	0.85		$	1.54		$	1.79		$	2.64
EBITDA ⁽¹⁾	$	255,369		$	377,772		$	526,004		$	674,789

_____________


(1)	See "Reconciliation of EBITDA to Net Income and to Net Cash Provided by Operating Activities" below.



	Three Months Ended June 30, 2016				Six Months Ended June 30, 2016
	Average Sales Price		Volume		Average Sales Price		Volume
Product sales price and volume percentage change from prior-year period
Olefins	-12.1	%	-8.3	%	-14.3	%	-8.8	%
Vinyls	-6.2	%	+11.1	%	-6.8	%	+11.5	%
Company average	-9.3	%	+0.9	%	-10.8	%	+0.8	%

Table of Contents



	Three Months Ended June 30,		Six Months Ended June 30,
	2016	2015	2016	2015
Average industry prices ⁽¹⁾
Ethane (cents/lb)	6.8	6.2	6.1	6.2
Propane (cents/lb)	11.7	10.8	10.4	11.7
Ethylene (cents/lb) ⁽²⁾	25.9	36.1	23.5	36.3
Polyethylene (cents/lb) ⁽³⁾	75.0	78.3	71.7	77.5
Styrene (cents/lb) ⁽⁴⁾	65.2	65.8	61.6	60.1
Caustic soda ($/short ton) ⁽⁵⁾	611.7	576.7	597.1	582.5
Chlorine ($/short ton) ⁽⁶⁾	296.7	268.3	290.8	253.8
PVC (cents/lb) ⁽⁷⁾	70.5	67.5	67.7	66.5

_____________


(1)	Industry pricing data was obtained from IHS Chemical. We have not independently verified the data.


(2)	Represents average North American spot prices of ethylene over the period as reported by IHS Chemical.


(3)	Represents average North American contract prices of polyethylene low density GP-Film grade over the period as reported by IHS Chemical.


(4)	Represents average North American contract prices of styrene over the period as reported by IHS Chemical.


(5)	Represents average North American undiscounted contract prices of caustic soda over the period as reported by IHS Chemical.


(6)	Represents average North American contract prices of chlorine (into chemicals) over the period as reported by IHS Chemical.


(7)	Represents average North American contract prices of PVC over the period as reported by IHS Chemical.

Reconciliation of EBITDA to Net Income and to Net Cash Provided by Operating Activities

The following table presents the reconciliation of EBITDA to net income and to net cash provided by operating activities, the most directly comparable GAAP financial measures, for each of the periods indicated.



	Three Months Ended June 30,					Six Months Ended June 30,
	2016		2015			2016		2015

	(dollars in thousands)
EBITDA	$	255,369	$	377,772		$	526,004	$	674,789
Less:
Provision for income taxes	66,584		98,413			135,884		176,791
Interest expense	5,915		8,958			12,600		18,549
Depreciation and amortization	67,250		60,340			132,964		118,981
Net income	115,620		210,061			244,556		360,468
Changes in operating assets and liabilities and other	80,984		36,981			22,346		71,799
Deferred income taxes	44,353		(2,243		)	102,990		3,088
Net cash provided by operating activities	$	240,957	$	244,799		$	369,892	$	435,355

Table of Contents

Summary

For the quarter ended June 30, 2016, net income attributable to Westlake Chemical Corporation was $111.1 million, or $0.85 per diluted share, on net sales of $1.1 billion. This represents a decrease in net income attributable to Westlake Chemical Corporation of $94.0 million, or $0.69 per diluted share, compared to the quarter ended June 30, 2015 net income attributable to Westlake Chemical Corporation of $205.1 million, or $1.54 per diluted share, on net sales of $1.2 billion. Net income for the second quarter of 2016 was impacted by (1) pre-tax unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, an unplanned outage at our Calvert City facility and other unplanned outages totaling approximately $65.7 million, or $0.33 per diluted share; (2) lost sales associated with such turnarounds and outages; and (3) pre-tax acquisition-related costs of approximately $7.7 million, or $0.04 per diluted share, related to the pending Merger. Net income for the second quarter of 2015 included a net pre-tax gain of $15.5 million, or $0.13 per diluted share, related to the bargain purchase gain from the acquisition of a controlling interest in Suzhou Huasu Plastics Co., Ltd. ("Huasu"), net of related expenses, and the partial impairment of an equity method investment. In addition, the bargain purchase gain on acquisition was non-taxable and lowered our effective tax rate for the second quarter of 2015. Net sales for the second quarter of 2016 decreased by $98.9 million compared to net sales for the second quarter of 2015, mainly due to lower sales prices for all our major products and lower sales volumes for polyethylene, ethylene and ethylene co-products, partially offset by higher sales volumes for PVC resin and styrene and sales contributed by Huasu. We acquired a controlling interest in Huasu in June 2015. Sales prices in the second quarter of 2016 were negatively impacted by lower crude oil prices as compared to the prior-year period. Income from operations was $179.9 million for the second quarter of 2016 as compared to $295.4 million for the second quarter of 2015. The decrease in income from operations for the second quarter of 2016 was mainly a result of the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, the unplanned outage at our Calvert City facility and other unplanned outages. In addition, income from operations for the second quarter of 2016 was negatively impacted by lower sales prices for all our major products and costs related to the pending Merger. This decrease was partially offset by lower average feedstock and energy costs and higher product margins at our European operations, as compared to the second quarter of 2015.

For the six months ended June 30, 2016, net income attributable to Westlake Chemical Corporation was $234.3 million, or $1.79 per diluted share, on net sales of $2.1 billion. This represents a decrease in net income attributable to Westlake Chemical Corporation of $117.1 million, or $0.85 per diluted share, from the six months ended June 30, 2015 net income attributable to Westlake Chemical Corporation of $351.4 million, or $2.64 per diluted share, on net sales of $2.3 billion. Net income for the six months ended June 30, 2016 was impacted by (1) pre-tax unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, the unplanned outage at our Calvert City facility and other unplanned outages totaling approximately $67.5 million, or $0.34 per diluted share; (2) lost sales associated with such turnarounds and outages; and (3) pre-tax acquisition-related costs of approximately $9.4 million, or $0.05 per diluted share, related to the pending Merger. Net income for the six months ended June 30, 2015 included a net pre-tax gain of $15.5 million, or $0.13 per diluted share, related to the bargain purchase gain from the acquisition of a controlling interest in Huasu, net of related expenses, and the partial impairment of an equity method investment. In addition, the bargain purchase gain on acquisition was non-taxable and lowered our effective tax rate for the six months ended June 30, 2015. Net sales for the six months ended June 30, 2016 decreased by $227.3 million compared to the prior-year period, primarily due to lower sales prices for all our major products and lower sales volumes for ethylene and ethylene co-products, partially offset by higher sales volumes for PVC resin and styrene and sales contributed by Huasu. Income from operations was $382.2 million for the six months ended June 30, 2016 as compared to $524.7 million for the six months ended June 30, 2015, a decrease mainly attributable to the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, the unplanned outage at our Calvert City facility and other unplanned outages. In addition, income from operations for the six months ended June 30, 2016 was negatively impacted by lower sales prices for all our major products and costs related to the pending Merger. This decrease was partially offset by lower average feedstock and energy costs and higher product margins at our European operations, as compared to the prior-year period.

RESULTS OF OPERATIONS

Second Quarter 2016 Compared with Second Quarter 2015

Net Sales. Net sales decreased by $98.9 million, or 8.3%, to $1.1 billion in the second quarter of 2016 from $1.2 billion in the second quarter of 2015, primarily attributable to lower sales prices for all our major products and lower sales volumes for polyethylene, ethylene and ethylene co-products, partially offset by higher sales volumes for PVC resin and styrene and sales contributed by Huasu. We acquired a controlling interest in Huasu in June 2015. Average sales prices for the second quarter of 2016 decreased by 9.3% as compared to the second quarter of 2015. Sales prices in the second quarter of 2016 were negatively

Table of Contents

impacted by lower crude oil prices as compared to the prior-year period. Overall sales volumes increased marginally by 0.9% as compared to the second quarter of 2015.

Gross Profit. Gross profit margin percentage decreased to 22.2% in the second quarter of 2016 from 29.8% in the second quarter of 2015. The second quarter 2016 gross profit was negatively impacted by the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, the unplanned outage at our Calvert City facility and other unplanned outages during the second quarter of 2016. In addition, lower sales prices for our major products further contributed to the decrease in second quarter 2016 gross profit margin. Sales prices decreased an average of 9.3% for the second quarter of 2016 as compared to the second quarter of 2015. The decrease in second quarter 2016 gross profit margin was partially offset by higher product margins at our European operations and lower average feedstock and energy costs.

Selling, General and Administrative Expenses. Selling, general and administrative expenses increased by $3.6 million to $61.4 million in the second quarter of 2016 as compared to $57.8 million in the second quarter of 2015. This increase was mainly due to fees incurred associated with the pending Merger, partially offset by lower consulting and professional fees in matters unrelated to the pending Merger, as compared to the prior-year period.

Interest Expense. Interest expense decreased by $3.1 million to $5.9 million in the second quarter of 2016 from $9.0 million in the second quarter of 2015 largely as a result of increased capitalized interest on major capital projects as compared to the prior-year period. Debt balances remained relatively unchanged from the prior-year period.

Other Income, Net. Other income, net decreased by $13.9 million to $8.2 million in the second quarter of 2016 from $22.1 million in the second quarter of 2015. Dividend income and interest income were higher for the second quarter of 2016 as compared to the prior-year period. Second quarter 2015 other income, net included a gain of approximately $15.5 million related to the bargain purchase gain from the acquisition of a controlling interest in Huasu, net of related expenses, and the partial impairment of an equity method investment.

Income Taxes. The effective income tax rate was 36.5% for the second quarter of 2016. The effective income tax rate for the second quarter of 2016 was above the U.S. federal statutory rate of 35.0% primarily due to state income taxes, partially offset by the domestic manufacturing deduction and income attributable to noncontrolling interests. The effective income tax rate was 31.9% for the second quarter of 2015. The effective income tax rate for the second quarter of 2015 was below the U.S. federal statutory rate of 35.0% primarily due to the benefit of state tax credits, the domestic manufacturing deduction, income attributable to noncontrolling interests, the non-recognition of tax related to the bargain purchase of a controlling interest in Huasu and the foreign earnings rate differential, partially offset by state income taxes.

Olefins Segment

Net Sales. Net sales for the Olefins segment decreased by $126.4 million, or 20.4%, to $494.5 million in the second quarter of 2016 from $620.9 million in the second quarter of 2015, primarily due to lower sales prices for our major products and lower sales volumes for polyethylene, ethylene and ethylene co-products, partially offset by higher styrene sales volume, as compared to the prior-year period. Average sales prices for the Olefins segment decreased by 12.1% in the second quarter of 2016 as compared to the second quarter of 2015. Average sales volumes for the Olefins segment decreased by 8.3% in the second quarter of 2016 as compared to the second quarter of 2015.

Income from Operations. Income from operations for the Olefins segment decreased by $80.3 million, or 36.4%, to $140.6 million in the second quarter of 2016 from $220.9 million in the second quarter of 2015. This decrease was mainly attributable to the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs related to the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit and unplanned outages during the second quarter of 2016. In addition, lower sales prices, partially offset by lower feedstock and energy costs, resulted in lower olefins integrated product margins for the second quarter of 2016 as compared to the prior-year period. Trading activity in the second quarter of 2016 resulted in a gain of $11.6 million as compared to a gain of $0.6 million in the second quarter of 2015.

Vinyls Segment

Net Sales. Net sales for the Vinyls segment increased by $27.5 million, or 4.9%, to $591.6 million in the second quarter of 2016 from $564.1 million in the second quarter of 2015. This increase was mainly attributable to sales contributed by Huasu, partially offset by lower sales prices for all of our major products, as compared to the prior-year period. In addition, in spite of the impact from the unplanned outage at our Calvert City facility, PVC resin sales volume for the second quarter of 2016 was higher as compared to the prior-year period. Average sales prices for the Vinyls segment decreased by 6.2% in the second quarter of 2016 as compared to the second quarter of 2015. Average sales volumes for the Vinyls segment increased by 11.1% in the second quarter of 2016 as compared to the second quarter of 2015.

Table of Contents

Income from Operations. Income from operations for the Vinyls segment decreased by $35.8 million, or 40.7%, to $52.2 million in the second quarter of 2016 from $88.0 million in the second quarter of 2015. This decrease was mainly caused by the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the unplanned outage at our Calvert City facility, costs incurred related to several planned maintenance turnarounds completed in the second quarter of 2016 and lower sales prices for all of our major products, partially offset by higher product margins at our European operations, as compared to the prior-year period.

Six Months Ended June 30, 2016 Compared with Six Months Ended June 30, 2015

Net Sales. Net sales decreased by $227.3 million, or 9.9%, to $2.1 billion for the six months ended June 30, 2016 from $2.3 billion for the six months ended June 30, 2015, primarily attributable to lower sales prices for all our major products and lower sales volumes for ethylene and ethylene co-products, partially offset by higher sales volumes for PVC resin and styrene and sales contributed by Huasu, as compared to the prior-year period. Average sales prices for the six months ended June 30, 2016 decreased by 10.8% as compared to the six months ended June 30, 2015. Sales prices in the first six months of 2016 were negatively impacted by lower crude oil prices as compared to the prior-year period. Overall sales volumes for the six months ended June 30, 2016 increased marginally by 0.8% as compared to the six months ended June 30, 2015.

Gross Profit. Gross profit margin percentage of 24.1% for the six months ended June 30, 2016 decreased from the 27.9% gross profit margin percentage for the six months ended June 30, 2015. The decrease was mainly attributable to the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, the unplanned outage at our Calvert City facility and other unplanned outages during the first six months of 2016. In addition, lower sales prices for our major products contributed to the lower gross profit margin for the six months ended June 30, 2016 as compared to the prior-year period. Sales prices decreased an average of 10.8% for the six months ended June 30, 2016 as compared to the prior-year period. The decrease in gross profit for the six months ended June 30, 2016 was partially offset by lower average feedstock and energy costs and higher product margins at our European operations, as compared to the prior-year period.

Selling, General and Administrative Expenses. Selling, general and administrative expenses increased by $1.6 million to $114.7 million for the six months ended June 30, 2016 as compared to $113.1 million for the six months ended June 30, 2015. This increase was mainly attributable to fees incurred associated with the pending Merger, mostly offset by lower consulting and professional fees in matters unrelated to the pending Merger and lower general expenses, as compared to the prior-year period.

Interest Expense. Interest expense decreased by $5.9 million to $12.6 million for the six months ended June 30, 2016, largely as a result of increased capitalized interest on major capital projects as compared to the prior-year period. Debt balances remained relatively unchanged from the prior-year period.

Other Income, Net. Other income, net decreased by $20.4 million to $10.8 million for the six months ended June 30, 2016 from $31.2 million for the six months ended June 30, 2015. The decrease from the prior-year period was mainly due to the negative impact of foreign exchange changes and lower income from our equity method investments, partially offset by higher interest income. Other income, net for the six months ended June 30, 2015 included a gain of approximately $15.5 million related to the bargain purchase gain from the acquisition of a controlling interest in Huasu, net of related expenses, and the partial impairment of an equity method investment.

Income Taxes. The effective income tax rate was 35.7% for the six months ended June 30, 2016. The effective income tax rate for the 2016 period was above the U.S. federal statutory rate of 35.0% primarily due to state income taxes, partially offset by the domestic manufacturing deduction and income attributable to noncontrolling interests. The effective income tax rate was 32.9% for the six months ended June 30, 2015. The effective income tax rate for the 2015 period was below the U.S. federal statutory rate of 35.0% primarily due to the benefit of state tax credits, the domestic manufacturing deduction, income attributable to noncontrolling interests, the non-recognition of tax related to the bargain purchase of a controlling interest in Huasu and the foreign earnings rate differential, partially offset by state income taxes.

Olefins Segment

Net Sales. Net sales decreased by $278.5 million, or 23.1%, to $0.9 billion for the six months ended June 30, 2016 from $1.2 billion for the six months ended June 30, 2015, mainly due to lower sales prices for our major products and lower sales volumes for ethylene and ethylene co-products, partially offset by higher styrene sales volume, as compared to the prior-year period. Average sales prices for the Olefins segment decreased by 14.3% for the six months ended June 30, 2016 as compared to the six months ended June 30, 2015. Average sales volumes for the Olefins segment decreased by 8.8% for the six months ended June 30, 2016 as compared to the six months ended June 30, 2015.

Table of Contents

Income from Operations. Income from operations decreased by $122.2 million, or 29.7%, to $289.8 million for the six months ended June 30, 2016 from $412.0 million for the six months ended June 30, 2015. This decrease was mainly attributable to the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs related to the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit and unplanned outages during the first six months of 2016. In addition, olefins integrated product margins were lower primarily as a result of lower sales prices, partially offset by lower feedstock and energy costs, for the six months ended June 30, 2016 as compared to the prior-year period. Trading activity for the six months ended June 30, 2016 resulted in a gain of $15.6 million as compared to a gain of $4.8 million for the prior-year period.

Vinyls Segment

Net Sales. Net sales increased by $51.1 million, or 4.7%, to $1.1 billion for the six months ended June 30, 2016 from $1.1 billion for the six months ended June 30, 2015. This increase was primarily attributable to sales contributed by Huasu and higher sales volumes for PVC resin and caustic soda, partially offset by lower sales prices for our major products. Average sales prices for the Vinyls segment decreased by 6.8% for the six months ended June 30, 2016 as compared to the six months ended June 30, 2015. Average sales volumes for the Vinyls segment increased by 11.5% for the six months ended June 30, 2016 as compared to the six months ended June 30, 2015.

Income from Operations. Income from operations decreased by $20.8 million to $114.3 million for the six months ended June 30, 2016 from $135.1 million for the six months ended June 30, 2015. This decrease was mainly caused by the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the unplanned outage at our Calvert City facility and costs incurred related to several planned maintenance turnarounds completed in the first six months of 2016. Income from operations for the six months ended June 30, 2016 was also lower as a result of lower sales prices for our major products, partially offset by higher product margins at our European operations and higher caustic soda sales volume primarily attributable to higher production rates at our Geismar chlor-alkali plant, as compared to the prior-year period.

CASH FLOW DISCUSSION FOR THE SIX MONTHS ENDED JUNE 30, 2016 AND 2015

Cash Flows

Operating Activities

Operating activities provided cash of $369.9 million in the first six months of 2016 compared to cash provided by operating activities of $435.4 million in the first six months of 2015. The $65.5 million decrease in cash flows from operating activities was mainly due to a decrease in income from operations, an increase in working capital requirements and an increase in deferred turnaround costs associated with OpCo's Lake Charles Petro 1 turnaround, partially offset by lower income taxes paid, as compared to the prior-year period. Income from operations decreased by $142.5 million in the first six months of 2016, mostly attributable to the lost sales, lower production rates, unabsorbed fixed manufacturing costs and other costs associated with the planned turnaround and expansion of OpCo's Lake Charles Petro 1 ethylene unit, the unplanned outage at our Calvert City facility and other unplanned outages and lower sales prices for all our major products, as compared to the prior-year period. Changes in components of working capital, which we define for purposes of this cash flow discussion as accounts receivable, net, inventories, prepaid expenses and other current assets, less accounts payable and accrued liabilities, used cash of $45.5 million in the first six months of 2016, compared to $25.9 million of cash used in the first six months of 2015, an unfavorable change of $19.6 million.

Investing Activities

Net cash used for investing activities during the first six months of 2016 was $126.4 million as compared to net cash used for investing activities of $174.3 million in the first six months of 2015. Capital expenditures were $287.2 million in the first six months of 2016 compared to $203.9 million in the first six months of 2015. Capital expenditures in the first six months of 2016 and 2015 were primarily incurred on the upgrade and expansion of OpCo's Petro 1 ethylene unit at our Lake Charles site. The remaining capital expenditures in the first six months of 2016 and 2015 primarily related to projects to improve production capacity or reduce costs, maintenance and safety projects and environmental projects at our various facilities. Purchases of securities in the first six months of 2016 totaled $138.4 million and were comprised of corporate debt securities, U.S. government debt securities and equity securities. We also received aggregate proceeds of $302.4 million from the sales and maturities of our investments in the first six months of 2016. The activity during the first six months of 2015 was primarily related to the receipt of proceeds from the sales and maturities of our investments. In addition, we acquired cash of $15.8 million, net of cash paid, in connection with the acquisition of a controlling interest in Huasu.

Table of Contents

Financing Activities

Net cash used for financing activities during the first six months of 2016 was $136.5 million as compared to net cash used for financing activities of $113.1 million in the first six months of 2015. The activity during the first six months of 2016 was primarily related to the $47.3 million payment of cash dividends, the $8.1 million payment of cash distributions to noncontrolling interests, the $9.7 million structuring and other fees incurred for the senior unsecured bridge loan facility and the $67.4 million of cash used for repurchases of shares of our common stock. In addition, we repaid $8.6 million of Huasu's short-term notes payable to banks in connection with the payment of suppliers through letters of credit, partially offset by $3.8 million of proceeds from the issuance of such notes payable. The financing activities during the first six months of 2015 were mainly related to the payment of cash dividends, the payment of cash distributions to noncontrolling interests and the repurchase of shares of our common stock.

LIQUIDITY AND CAPITAL RESOURCES

Liquidity and Financing Arrangements

Our principal sources of liquidity are from cash and cash equivalents, investments in current marketable securities, cash from operations, short-term borrowings under our revolving credit facility and our long-term financing.

On June 10, 2016, we entered into a Merger Agreement with Axiall and Merger Sub, pursuant to which we will acquire all of the issued and outstanding shares of common stock of Axiall for $33.00 per share in cash. The total value of this transaction is approximately $3.8 billion, including the assumption of certain Axiall liabilities. We intend to pay for the acquisition of Axiall with a combination of cash on hand and external long-term debt funding.

In January 2016, OpCo announced an expansion project to increase the ethylene capacity of its ethylene plant at our Calvert City facility. The expansion is expected to increase ethylene capacity by approximately 70 million pounds annually and is targeted for completion during the first half of 2017. Combined with other incremental capacity increases, the total ethylene capacity of OpCo's ethylene plant at our Calvert City facility is expected to increase to 730 million pounds annually at the completion of this project. This capital project is currently estimated to cost in the range of $70.0 million to $80.0 million and is expected to be funded with cash on hand, cash flow from operations, and, if necessary, borrowings under each of our revolving credit facility and OpCo's revolving credit facility with another subsidiary of ours and other external financing. As of June 30, 2016, OpCo had incurred a total cost of approximately $21.8 million on the Calvert City ethylene expansion capital project.

In November 2014, our Board of Directors authorized a $250.0 million share repurchase program (the "2014 Program"). In November 2015, our Board of Directors approved the expansion of the 2014 Program by an additional $150.0 million. During the three months ended June 30, 2016, we repurchased 1,511,109 shares of our common stock for an aggregate purchase price of approximately $66.7 million under the 2014 Program. As of June 30, 2016, we had repurchased 4,193,598 shares of our common stock for an aggregate purchase price of approximately $228.7 million under the 2014 Program. Purchases under the 2014 Program may be made either through the open market or in privately negotiated transactions. Decisions regarding the amount and the timing of purchases under the 2014 Program will be influenced by our cash on hand, our cash flow from operations, general market conditions and other factors. The 2014 Program may be discontinued by our Board of Directors at any time.

We believe that our sources of liquidity as described above will be adequate to fund our normal operations and ongoing capital expenditures. Funding of any potential large expansions or any potential acquisitions would likely necessitate and therefore depend on our ability to obtain additional financing in the future. We may not be able to access additional liquidity at cost effective interest rates due to the volatility of the commercial credit markets. Our management believes that borrowing under our revolving credit facility should be available up to our borrowing base, if needed. At June 30, 2016, the borrowing base of our credit facility was $388.4 million, which is below the maximum borrowing capacity of $400.0 million due to our low carrying amount of accounts receivable and inventory, which make up the borrowing base.

Cash and Cash Equivalents

As of June 30, 2016, our cash, cash equivalents and current marketable securities totaled $1.1 billion. In addition, we have a revolving credit facility available to supplement cash if needed, as described under "Debt" below.

Table of Contents

Debt

In connection with the Merger Agreement, we entered into the Debt Commitment Letter with various lenders pursuant to which such lenders have agreed to provide for a Bridge Facility of up to $1.765 billion in the aggregate for the purpose of providing the financing necessary to fund a portion of the consideration to be paid pursuant to the terms of the Merger Agreement and related fees and expenses. The funding of the Bridge Facility is contingent on the satisfaction of certain conditions set forth in the Debt Commitment Letter.

As of June 30, 2016, our long-term debt, including current maturities, totaled $758.5 million, consisting of $250.0 million principal amount of 3.60% senior notes due 2022, $100.0 million of 6 ½% senior notes due 2029, $250.0 million of 6 ¾% senior notes due 2032, $89.0 million of 6 ½% senior notes due 2035 (the "6 ½% GO Zone Senior Notes Due 2035"), $65.0 million of 6 ½% senior notes due 2035 (the "6 ½% IKE Zone Senior Notes Due 2035") (collectively, but excluding the 3.60% senior notes due 2022, the "Senior Notes") and a $10.9 million loan from the proceeds of tax-exempt waste disposal revenue bonds (supported by an $11.3 million letter of credit), less unamortized discount and debt issuance costs of $6.4 million. The 6 ½% senior notes due 2029, the 6 ¾% senior notes due 2032, the 6 ½% GO Zone Senior Notes Due 2035 and the 6 ½% IKE Zone Senior Notes Due 2035 evidence and secure our obligations to the Louisiana Local Government Environmental Facility and Development Authority (the "Authority"), a political subdivision of the State of Louisiana, under four loan agreements relating to the issuance of $100.0 million, $250.0 million, $89.0 million and $65.0 million aggregate principal amount of the Authority's tax-exempt revenue bonds, respectively. As of June 30, 2016, debt outstanding under the tax-exempt waste disposal revenue bonds bore interest at a variable rate. As of June 30, 2016, we were in compliance with all of the covenants with respect to the 3.60% senior notes due 2022, the Senior Notes, our waste disposal revenue bonds and our revolving credit facility.

Our ability to make payments on our indebtedness and to fund planned capital expenditures will depend on our ability to generate cash in the future, which is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond our control. Based on our current level of operations and unless we were to undertake a new expansion or large acquisition, we believe our cash flow from operations, available cash and available borrowings under our revolving credit facility will be adequate to meet our normal operating needs for the foreseeable future.

Revolving Credit Facility

We have a $400.0 million senior secured revolving credit facility. The facility includes a provision permitting us to increase the size of the facility, up to four times, in increments of at least $25.0 million each (up to a maximum of $200.0 million) under certain circumstances if certain lenders agree to commit to such an increase.

At June 30, 2016, we had no borrowings outstanding under the revolving credit facility. Any borrowings under the facility will bear interest at either LIBOR plus a spread ranging from 1.25% to 1.75%, provided that so long as we are rated investment grade, the margin for LIBOR loans will not exceed 1.50%, or a base rate plus a spread ranging from 0.0% to 0.50%. The revolving credit facility also requires an unused commitment fee of 0.25% per annum. All interest rates under the facility are subject to monthly grid pricing adjustments based on prior month average daily loan availability. The revolving credit facility matures on July 17, 2019. As of June 30, 2016, we had outstanding letters of credit totaling $18.5 million and borrowing availability of $369.8 million under the revolving credit facility.

Our revolving credit facility generally restricts our ability to make distributions unless, on a pro forma basis after giving effect to the distribution, the borrowing availability under the facility equals or exceeds the greater of (1) 20% of the commitments under the facility and (2) $80.0 million; or the borrowing availability under the facility equals or exceeds the greater of (1) 15% of the commitments under the facility and (2) $60.0 million, and our fixed charge coverage ratio is at least 1.0:1. However, we may make specified distributions up to an aggregate of $82.7 million in 2016, to be increased by 5% in each fiscal year thereafter, on an aggregate basis, for each fiscal year.

In order to make acquisitions or investments, our revolving credit facility provides that (1) we must maintain a minimum borrowing availability of at least the greater of $60.0 million or 15% of the total bank commitments under our revolving credit facility or (2) we must maintain a minimum borrowing availability of at least the greater of $50.0 million or 12.5% of the total bank commitments under our revolving credit facility and meet a minimum fixed charge coverage ratio of 1.0:1 under our revolving credit facility. Notwithstanding the foregoing, we may make investments in the aggregate up to the greater of $50.0 million and 1.25% of tangible assets and acquisitions in the aggregate up to the greater of $100.0 million and 2.5% of tangible assets, if, on a pro forma basis after giving effect to the acquisition or investment, either (X) the borrowing availability under the facility equals or exceeds the greater of (A) 12.5% of the total bank commitments under the facility and (B) $50.0 million, but is less than the greater of (A) 15% of the total bank commitments and (B) $60.0 million, or (Y) our fixed charge coverage ratio is at least 1.0:1.

Table of Contents

The revolving credit facility contains other customary covenants and events of default that impose significant operating and financial restrictions on us. These restrictions, among other things, provide limitations on the occurrence of additional indebtedness and our ability to create liens, to engage in certain affiliate transactions and to engage in sale-leaseback transactions. See "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Debt" in the 2015 Form 10-K for more information on the revolving credit facility.

GO Zone and IKE Zone Bonds

As of June 30, 2016, we had drawn all the proceeds from the issuance of the 6 ½% senior notes due 2029, 6 ¾% senior notes due 2032, 6 ½% GO Zone Senior Notes Due 2035 and 6 ½% IKE Zone Senior Notes Due 2035. See "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Debt" in the 2015 Form 10-K for more information on the 6 ½% senior notes due 2029, the 6 ¾% senior notes due 2032, the 6 ½% GO Zone Senior Notes Due 2035 and the 6 ½% IKE Zone Senior Notes Due 2035. All domestic restricted subsidiaries that guarantee other debt of ours or of another guarantor of the Senior Notes in excess of $5.0 million are guarantors of these notes.

The indentures governing the Senior Notes contain customary covenants and events of default. Accordingly, these agreements generally impose significant operating and financial restrictions on us. These restrictions, among other things, provide limitations on incurrence of additional indebtedness, the payment of dividends, certain investments and acquisitions and sales of assets. However, the effectiveness of certain of these restrictions is currently suspended because the Senior Notes are currently rated investment grade by at least two nationally recognized credit rating agencies. The most significant of these provisions, if it were currently effective, would restrict us from incurring additional debt, except specified permitted debt (including borrowings under our credit facility), when our fixed charge coverage ratio is below 2.0:1. These limitations are subject to a number of important qualifications and exceptions, including, without limitation, an exception for the payment of our regular quarterly dividend of up to $0.10 per share. If the restrictions were currently effective, distributions in excess of $100.0 million would not be allowed unless, after giving pro forma effect to the distribution, our fixed charge coverage ratio is at least 2.0:1 and such payment, together with the aggregate amount of all other distributions after January 13, 2006, is less than the sum of 50% of our consolidated net income for the period from October 1, 2003 to the end of the most recent quarter for which financial statements have been filed, plus 100% of net cash proceeds received after October 1, 2003 as a contribution to our common equity capital or from the issuance or sale of certain securities, plus several other adjustments.

3.60% Senior Notes due 2022

The 3.60% senior notes due 2022 are unsecured and were issued with an original issue discount of $1.2 million. There is no sinking fund and no scheduled amortization of the 3.60% senior notes due 2022 prior to maturity. See "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Debt" in the 2015 Form 10-K for more information on the 3.60% senior notes due 2022. All of our domestic subsidiaries that guarantee other indebtedness of ours or of another guarantor of the 3.60% senior notes due 2022 in excess of $5.0 million are guarantors of the 3.60% senior notes due 2022.

The indenture governing the 3.60% senior notes due 2022 contains customary events of default and covenants that will restrict our and certain of our subsidiaries' ability to (1) incur certain secured indebtedness, (2) engage in certain sale-leaseback transactions and (3) consolidate, merge or transfer all or substantially all of our assets.

Revenue Bonds

In December 1997, we entered into a loan agreement with a public trust established for public purposes for the benefit of the Parish of Calcasieu, Louisiana. The public trust issued $10.9 million principal amount of tax-exempt waste disposal revenue bonds in order to finance our construction of waste disposal facilities for an ethylene plant. The waste disposal revenue bonds expire in December 2027 and are subject to redemption and mandatory tender for purchase prior to maturity under certain conditions. Interest on the waste disposal revenue bonds accrues at a rate determined by a remarketing agent and is payable quarterly.

Westlake Chemical Partners LP Credit Arrangements

Our subsidiary, Westlake Chemical Finance Corporation, is the lender party to a $300.0 million revolving credit facility with Westlake Chemical Partners LP ("Westlake Partners"). The revolving credit facility matures in 2018. Borrowings under the revolver bear interest at LIBOR plus a spread ranging from 2.0% to 3.0% (depending on Westlake Partners' consolidated leverage ratio), payable quarterly. Westlake Partners may pay all or a portion of the interest on any borrowings in kind, in which case any such amounts would be added to the principal amount of the loan. As of June 30, 2016, outstanding borrowings under the credit facility totaled $135.3 million and bore interest at the LIBOR rate plus 2.0%.

Table of Contents

Our subsidiary, Westlake Development Corporation, is the lender party to a $600.0 million revolving credit facility with OpCo. The revolving credit facility matures in 2019. As of June 30, 2016, outstanding borrowings under the credit facility totaled $348.2 million and bore interest at the LIBOR rate plus 3.0%, which is accrued in arrears quarterly.

We consolidate Westlake Partners and OpCo for financial reporting purposes as we have a controlling financial interest. As such, the revolving credit facilities described above between our subsidiaries and Westlake Partners and OpCo are eliminated upon consolidation.

Off-Balance Sheet Arrangements

None.

FORWARD-LOOKING STATEMENTS

The Private Securities Litigation Reform Act of 1995 provides safe harbor provisions for forward-looking information. Certain of the statements contained in this report are forward-looking statements. All statements, other than statements of historical facts, included in this report that address activities, events or developments that we expect, project, believe or anticipate will or may occur in the future are forward-looking statements. Forward-looking statements can be identified by the use of words such as "believes," "intends," "may," "should," "could," "anticipates," "expected" or comparable terminology, or by discussions of strategies or trends. Similarly, statements made herein and elsewhere regarding our pending acquisition of Axiall are also forward-looking statements, including statements regarding the anticipated closing date of the acquisition, the ability to obtain regulatory approvals or to satisfy closing conditions, the costs of the acquisition or the source or structure of the financing, the expected benefits of the acquisition on our future business, operations and financial performance and our ability to successfully integrate the recently acquired business. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we cannot give any assurances that these expectations will prove to be correct. Forward-looking statements relate to matters such as:


•	future operating rates, margins, cash flow and demand for our products;


•	industry market outlook, including the price of crude oil;


•	production capacities;


•	currency devaluation;


•	our ability to borrow additional funds under our credit facility;


•	our ability to meet our liquidity needs;


•	our ability to meet debt obligations under our debt instruments;


•	our intended quarterly dividends;


•	future capacity additions and expansions in the industry;


•	timing, funding and results of capital projects, such as the expansion program at our Calvert City facility;


•	results of acquisitions, including our planned transaction to acquire Axiall (including financing of the transaction and the benefits, results, effects and timing thereof);


•	pension plan obligations, funding requirements and investment policies;


•	compliance with present and future environmental regulations and costs associated with environmentally related penalties, capital expenditures, remedial actions and proceedings, including any new laws, regulations or treaties that may come into force to limit or control carbon dioxide and other greenhouse gases emissions or to address other issues of climate change;


•	effects of pending legal proceedings; and


•	timing of and amount of capital expenditures.

Table of Contents

We have based these statements on assumptions and analyses in light of our experience and perception of historical trends, current conditions, expected future developments and other factors we believe were appropriate in the circumstances when the statements were made. Forward-looking statements by their nature involve substantial risks and uncertainties that could significantly impact expected results, and actual future results could differ materially from those described in such statements. These statements are subject to a number of assumptions, risks and uncertainties, including those described in "Risk Factors" in the 2015 Form 10-K and the following:


•	general economic and business conditions;


•	the cyclical nature of the chemical industry;


•	the availability, cost and volatility of raw materials and energy;


•	uncertainties associated with the United States, European and worldwide economies, including those due to political tensions and unrest in the Middle East, the Commonwealth of Independent States (including Ukraine) and elsewhere;


•	current and potential governmental regulatory actions in the United States and other countries and political unrest in other areas;


•	industry production capacity and operating rates;


•	the supply/demand balance for our products;


•	competitive products and pricing pressures;


•	instability in the credit and financial markets;


•	access to capital markets;


•	terrorist acts;


•	operating interruptions (including leaks, explosions, fires, weather-related incidents, mechanical failure, unscheduled downtime, labor difficulties, transportation interruptions, spills and releases and other environmental risks);


•	changes in laws or regulations;


•	technological developments;


•	our ability to consummate the Merger;


•	business uncertainties while the Merger is pending;


•	our ability to realize anticipated benefits of the Merger and to integrate Axiall's business;


•	charges or other liabilities relating to the Merger;


•	the significant indebtedness that we may incur in connection with the Merger;


•	our ability to integrate acquired businesses other than Axiall;


•	foreign currency exchange risks;


•	our ability to implement our business strategies; and


•	creditworthiness of our customers.

Many of these factors are beyond our ability to control or predict. Any of the factors, or a combination of these factors, could materially affect our future results of operations and the ultimate accuracy of the forward-looking statements. These forward-looking statements are not guarantees of our future performance, and our actual results and future developments may differ materially from those projected in the forward-looking statements. Management cautions against putting undue reliance on forward-looking statements or projecting any future results based on such statements or present or prior earnings levels. Every forward-looking statement speaks only as of the date of the particular statement, and we undertake no obligation to publicly update or revise any forward-looking statements.

Table of Contents


Item 3.	Quantitative and Qualitative Disclosures about Market Risk

Commodity Price Risk

A substantial portion of our products and raw materials are commodities whose prices fluctuate as market supply and demand fundamentals change. Accordingly, product margins and the level of our profitability tend to fluctuate with changes in the business cycle. We try to protect against such instability through various business strategies. Our strategies include ethylene feedstock flexibility and moving downstream into the olefins and vinyls products where pricing is more stable. We use derivative instruments in certain instances to reduce price volatility risk on feedstocks and products. Based on our open derivative positions at June 30, 2016, a hypothetical $0.10 increase in the price of a gallon of ethane would have increased our income before taxes by $18.1 million and a hypothetical $0.10 increase in the price of a gallon of propane would have increased our income before taxes by $6.3 million. Additional information concerning derivative commodity instruments appears in Notes 12 and 13 to the unaudited consolidated financial statements within this Quarterly Report on Form 10-Q.

Interest Rate Risk

We are exposed to interest rate risk with respect to fixed and variable rate debt. At June 30, 2016, we had $10.9 million principal amount of variable rate debt outstanding. All of the debt outstanding under our revolving credit facility (none was outstanding at June 30, 2016) and our loan relating to the tax-exempt waste disposal revenue bonds are at variable rates. We do not currently hedge our variable interest rate debt, but we may do so in the future. The average variable interest rate for our variable rate debt of $10.9 million as of June 30, 2016 was 0.52%. A hypothetical 100 basis point increase in the average interest rate on our variable rate debt would increase our annual interest expense by approximately $0.1 million. Also, at June 30, 2016, we had $754.0 million aggregate principal amount of fixed rate debt. We are subject to the risk of higher interest cost if and when this debt is refinanced. If interest rates were 1% higher at the time of refinancing, our annual interest expense would increase by approximately $7.5 million.

Foreign Currency Exchange Rate Risk

We are exposed to foreign currency exchange rate risk associated with our international operations. However, the effect of fluctuations in foreign currency exchange rates caused by our international operations has not had a material impact on our overall operating results. We may engage in activities to mitigate our exposure to foreign currency exchange risk in certain instances through the use of currency exchange derivative instruments, including forward exchange contracts, or spot purchases. A forward exchange contract obligates us to exchange predetermined amounts of specified currencies at a stated exchange rate on a stated date.


Item 4.	Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of our management, including our President and Chief Executive Officer and our Senior Vice President, Chief Financial Officer and Treasurer, of the effectiveness of our disclosure controls and procedures pursuant to Rules 13a-15 or 15d-15 under the Securities Exchange Act of 1934 as of the end of the period covered by this report. Based upon that evaluation, our President and Chief Executive Officer and our Senior Vice President, Chief Financial Officer and Treasurer concluded that our disclosure controls and procedures are effective with respect to (i) the accumulation and communication to our management, including our Chief Executive Officer and our Chief Financial Officer, of information required to be disclosed by us in the reports that we submit under the Exchange Act, and (ii) the recording, processing, summarizing and reporting of such information within the time periods specified in the SEC's rules and forms.

There were no changes in our internal control over financial reporting that occurred during the three months ended June 30, 2016 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Table of Contents

PART II. OTHER INFORMATION



Item 1.	Legal Proceedings

The 2015 Form 10-K, filed on February 24, 2016, contained a description of various legal proceedings in which we are involved, including environmental proceedings at our facilities in Calvert City. See Note 18 to the unaudited consolidated financial statements within this Quarterly Report on Form 10-Q for a description of certain of those proceedings, which information is incorporated by reference herein.



Item 1A.	Risk Factors

For a discussion of risk factors, please read Item 1A, "Risk Factors" in the 2015 Form 10-K. The information below includes additional risks relating to our previously announced plans to acquire Axiall. The risks described below and in other documents that we file from time to time with the Securities and Exchange Commission could materially and adversely affect our business, results of operations, cash flow, liquidity or financial condition.

We and Axiall must obtain certain approvals and governmental and regulatory consents to consummate the Merger, which, if delayed, not granted or granted with unacceptable conditions, may jeopardize or delay the consummation of the Merger, result in additional expenditures of money and resources and/or reduce the anticipated benefits of the transaction.

The Merger is subject to customary closing conditions. These closing conditions include, among others, (1) adoption of the Merger Agreement by the affirmative vote of the holders of a majority of all outstanding shares of Axiall common stock, (2) the receipt of certain required regulatory approvals, including expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR Act"), (3) the absence of an order, judgment, injunction or law prohibiting the consummation of the Merger, (4) the accuracy of the other party's representations and warranties contained in the Merger Agreement (subject to certain materiality standards set forth in the Merger Agreement) and (5) each party's compliance with or performance of its covenants and agreements contained in the Merger Agreement in all material respects. The waiting period under the Canadian Competition Act expired on July 28, 2016, and the waiting period under the HSR Act expired on August 4, 2016.

The governmental agencies from which the parties will seek these approvals have broad discretion in administering the governing regulations. As a condition to their approval of the Merger, agencies may impose requirements, limitations or costs or require divestitures or place restrictions on the conduct of our business after consummation of the Merger. These requirements, limitations, costs, divestitures or restrictions could jeopardize or delay the consummation of the Merger or may reduce the anticipated benefits of the transaction. Further, no assurance can be given that the Axiall stockholder approval will be obtained or that the required closing conditions will be satisfied, and, if all required consents and approvals are obtained and the closing conditions are satisfied, no assurance can be given as to the terms, conditions and timing of the approvals. If we and Axiall agree to any material requirements, limitations, costs, divestitures or restrictions in order to obtain any approvals required to consummate the Merger, these requirements, limitations, costs, divestitures or restrictions could adversely affect our ability to integrate our operations with Axiall's operations or reduce the anticipated benefits of the transaction. This could result in a failure to consummate the transaction or have a material adverse effect on our business and results of operations.

Even if the required approvals and governmental and regulatory consents are obtained under acceptable conditions, we or Axiall may elect to terminate the Merger Agreement in certain circumstances as described in the Merger Agreement and the parties can mutually decide to terminate the Merger Agreement at any time prior to the closing, before or after receipt of the Axiall stockholder approval, as applicable.

Failure to consummate the Merger could negatively impact our share price and our future business and financial results.

If the Merger is not consummated, our ongoing business may be adversely affected and, without realizing any of the potential benefits of having consummated the transaction, we will be subject to a number of risks, including the following:


•	we will be required to pay certain costs and expenses relating to the proposed transaction;


•	matters relating to the transaction (including integration planning) may have required substantial commitments of time and resources by our management, which could otherwise have been devoted to other opportunities that may have been beneficial to us; and


•	we also could be subject to litigation related to a failure to consummate the transaction or related to any enforcement proceeding commenced against us to perform our obligations under the Merger Agreement.

Table of Contents

If the Merger is not consummated, these risks may materialize and may adversely affect our business, financial results and share price.

While the Merger is pending, we and Axiall will be subject to business uncertainties that could adversely affect our businesses.

Uncertainty about the effect of the Merger on employees, customers and suppliers may have an adverse effect on us and/or Axiall. These uncertainties may impair our and/or Axiall's ability to attract, retain and motivate key personnel until the Merger is consummated and for a period of time thereafter, and could cause customers, suppliers and others who deal with us and Axiall to seek to change or terminate existing business relationships with us and/or Axiall. Employee retention may be particularly challenging during the pendency of the Merger because employees may experience uncertainty about their future roles with us. If, despite our and Axiall's retention efforts, key employees depart because of issues relating to the uncertainty and difficulty of integration or a desire not to remain with us, our business could be seriously harmed.

We may not realize all of the anticipated benefits of the Merger or those benefits may take longer to realize than expected. We may also encounter significant unexpected difficulties in integrating the two businesses.

Our ability to realize the anticipated benefits of the Merger will depend, to a large extent, on our ability to integrate the Westlake and Axiall businesses. The combination of two independent businesses is a complex, costly and time-consuming process. As a result, we will be required to devote significant management attention and resources to integrating Axiall's business practices and operations with our existing business practices and operations. The integration process may disrupt the businesses and, if implemented ineffectively or if impacted by unforeseen negative economic or market conditions or other factors, we may not realize the full anticipated benefits of the Merger. Our failure to meet the challenges involved in integrating the two businesses to realize the anticipated benefits of the Merger could cause an interruption of, or a loss of momentum in, our activities and could adversely affect our results of operations.

In addition, the overall integration of the businesses may result in material unanticipated problems, expenses, liabilities, competitive responses, loss of customer relationships, and diversion of management's attention. The difficulties of combining the operations of the companies include, among others:


•	the diversion of management's attention to integration matters;


•	difficulties in achieving anticipated cost savings, synergies, business opportunities and growth prospects from combining Axiall's business with our business;


•	difficulties entering new markets or manufacturing in new geographies where we have no or limited direct prior experience;


•	difficulties in the integration of operations and systems;


•	difficulties in the assimilation of employees;


•	difficulties in managing the expanded operations of a significantly larger and more complex company;


•	successfully managing relationships with our strategic partners and our supplier and customer base;


•	challenges in maintaining existing, and establishing new, business relationships; and


•	challenges in attracting and retaining key personnel.

Many of these factors will be outside of our control and any one of them could result in increased costs, decreases in the amount of expected revenues and diversion of management's time and energy, which could materially impact the business, financial condition and our results of operations. In addition, even if the operations of our business and Axiall's business are integrated successfully, we may not realize the full benefits of the Merger, including the synergies, cost savings or sales or growth opportunities that we expect. These benefits may not be achieved within the anticipated time frame, or at all. Furthermore, additional unanticipated costs may be incurred in the integration of the businesses. All of these factors could decrease or delay the expected accretive effect of the Merger and negatively impact us. As a result, we cannot be certain that the combination of the Westlake and Axiall businesses will result in the realization of the full benefits anticipated from the Merger.

The Merger may result in significant charges or other liabilities that could adversely affect the financial results of the combined company.

The financial results of the combined company may be adversely affected by cash expenses and non-cash accounting charges incurred in connection with our integration of the business and operations of Axiall with our existing business and operations. The amount and timing of these possible charges are not yet known. Further, our failure to identify or accurately

Table of Contents

assess the magnitude of certain liabilities that we are assuming in the Merger could result in unexpected litigation or regulatory exposure, unfavorable accounting charges, unexpected increases in taxes due, a loss of anticipated tax benefits or other adverse effects on our business, operating results or financial condition. The price of our common stock following the Merger could decline to the extent the combined company's financial results are materially affected by any of these events.

Our level of debt, including that incurred in connection with the Merger, could adversely affect our ability to operate our business.

As of June 30, 2016, we had total outstanding debt of $758.5 million, and our debt represented approximately 17% of our total capitalization. Our annual interest expense for 2015 was $34.7 million, net of interest capitalized of $10.4 million. We expect to incur up to $1.6 billion of additional debt to complete the acquisition of Axiall. Our level of debt and the limitations imposed on us by our existing or future debt agreements could have significant consequences on our business and future prospects, including the following:


•	a portion of our cash flow from operations will be dedicated to the payment of interest and principal on our debt and will not be available for other purposes, including the payment of dividends;


•	we may not be able to obtain necessary financing in the future for working capital, capital expenditures, acquisitions, debt service requirements or other purposes;


•	our less leveraged competitors could have a competitive advantage because they have greater flexibility to utilize their cash flow to improve their operations;


•	we may be exposed to risks inherent in interest rate fluctuations because some of our borrowings are at variable rates of interest, which would result in higher interest expense in the event of increases in interest rates;


•	we could be vulnerable in the event of a downturn in our business that would leave us less able to take advantage of significant business opportunities and to react to changes in our business and in market or industry conditions; and


•	should we pursue additional expansions of existing assets or acquisition of third party assets, we may not be able to obtain additional liquidity at cost effective interest rates.

These factors could be magnified or accelerated to the extent we were to finance future acquisitions, including the Merger, with significant amounts of debt.



Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information on our purchase of equity securities during the quarter ended June 30, 2016.



Period	Total Number of Shares Purchased		Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs ⁽²⁾	Maximum Number (or Approximate Dollar Value) of Shares that May Yet Be Purchased Under the Plans or Programs ⁽²⁾
April 2016	75	⁽¹⁾	$	46.03	—	$	238,012,000
May 2016	1,266,009	⁽²⁾	$	44.03	1,266,009	$	182,275,000
June 2016	245,100	⁽²⁾	$	44.84	245,100	$	171,285,000
	1,511,184		$	44.16	1,511,109

_____________


(1)	Represents shares withheld in satisfaction of withholding taxes due upon the vesting of restricted stock units granted to our employees under the 2013 Plan.

(2)

In November 2014, our Board of Directors authorized a $250.0 million share repurchase program (the "2014 Program"). In November 2015, our Board of Directors approved the expansion of the 2014 Program by an additional $150.0 million. As of June 30, 2016, 4,193,598 shares of common stock had been acquired at an aggregate purchase price of approximately $228.7 million under the 2014 Program. Transaction fees and commissions are not reported in the average price paid per share in the table above. Decisions regarding the amount and the timing of purchases under the 2014 Program will be influenced by our cash on hand, our cash flow from operations, general market conditions and other factors. The 2014 Program may be discontinued by our Board of Directors at any time.

Table of Contents



Item 6.	Exhibits



Exhibit No.

2.1		Agreement and Plan of Merger, dated June 10, 2016, by and among Westlake Chemical Corporation, Lagoon Merger Sub, Inc. and Axiall Corporation (incorporated by reference to Exhibit 2.1 to Westlake's Current Report on Form 8-K, filed on June 14, 2016, File No. 001-32260)

10.1		Commitment Letter, dated June 10, 2016, by and among Westlake Chemical Corporation, Deutsche Bank AG Cayman Islands Branch, Deutsche Bank Securities Inc. and Goldman Sachs Bank USA (incorporated by reference to Exhibit 10.1 to Westlake's Current Report on Form 8-K, filed on June 14, 2016, File No. 001-32260)

31.1†		Rule 13a – 14(a) / 15d – 14(a) Certification (Principal Executive Officer)

31.2†		Rule 13a – 14(a) / 15d – 14(a) Certification (Principal Financial Officer)

32.1#		Section 1350 Certification (Principal Executive Officer and Principal Financial Officer)

99.1#		Unaudited Financial Statements of Non Wholly-Owned Subsidiary Guarantor (Westlake Chemical OpCo LP)

101.INS†		XBRL Instance Document

101.SCH†		XBRL Taxonomy Extension Schema Document

101.CAL†		XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF†		XBRL Taxonomy Extension Definition Linkbase Document

101.LAB†		XBRL Taxonomy Extension Label Linkbase Document

101.PRE†		XBRL Taxonomy Extension Presentation Linkbase Document

______________________________


†	Filed herewith.


#	Furnished herewith.

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



		WESTLAKE CHEMICAL CORPORATION

Date:	August 9, 2016	By:	/S/ ALBERT CHAO
			Albert Chao
			President and Chief Executive Officer (Principal Executive Officer)

Date:	August 9, 2016	By:	/S/ M. STEVEN BENDER
			M. Steven Bender
			Senior Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer)

Table of Contents

EXHIBIT INDEX



Exhibit No.		Exhibit

2.1		Agreement and Plan of Merger, dated June 10, 2016, by and among Westlake Chemical Corporation, Lagoon Merger Sub, Inc. and Axiall Corporation (incorporated by reference to Exhibit 2.1 to Westlake's Current Report on Form 8-K, filed on June 14, 2016, File No. 001-32260)

10.1		Commitment Letter, dated June 10, 2016, by and among Westlake Chemical Corporation, Deutsche Bank AG Cayman Islands Branch, Deutsche Bank Securities Inc. and Goldman Sachs Bank USA (incorporated by reference to Exhibit 10.1 to Westlake's Current Report on Form 8-K, filed on June 14, 2016, File No. 001-32260)

31.1†		Rule 13a – 14(a) / 15d – 14(a) Certification (Principal Executive Officer)

31.2†		Rule 13a – 14(a) / 15d – 14(a) Certification (Principal Financial Officer)

32.1#		Section 1350 Certification (Principal Executive Officer and Principal Financial Officer)

99.1#		Unaudited Financial Statements of Non Wholly-Owned Subsidiary Guarantor (Westlake Chemical OpCo LP)

101.INS†		XBRL Instance Document

101.SCH†		XBRL Taxonomy Extension Schema Document

101.CAL†		XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF†		XBRL Taxonomy Extension Definition Linkbase Document

101.LAB†		XBRL Taxonomy Extension Label Linkbase Document

101.PRE†		XBRL Taxonomy Extension Presentation Linkbase Document

______________________________


†	Filed herewith.


#	Furnished herewith.