FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * WILKENING GARRY A   2. Issuer Name and Ticker or Trading Symbol ST MARY LAND & EXPLORATION CO [SM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP-HR & Administration (Last) (First) (Middle) 1776 LINCOLN ST., SUITE 700 3. Date of Earliest Transaction (Month/Day/Year) 12/31/2007 (Street) DENVER, CO 80203 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock; $.01 Par Value 12/31/2007   J(1) V 94 A $ 31.127 5,925 D   Common Stock; $.01 Par Value 02/28/2008   M   321 A (2) 6,246 D   Common Stock; $.01 Par Value 02/28/2008   F   98 D $ 37.84 6,148 D   Common Stock; $.01 Par Value 02/28/2008   M   3,172 A (3) 9,320 D   Common Stock; $.01 Par Value 02/28/2008   F   957 D $ 37.84 8,363 D   Common Stock; $.01 Par Value 02/28/2008   M   312 A (4) 8,675 D   Common Stock; $.01 Par Value 02/28/2008   F   97 D $ 37.84 8,578 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(2)

02/28/2008

M

321

02/28/2008

02/28/2008

Common Stock

321

$ 0

320

D

Restricted Stock Units

(3)

02/28/2008

M

3,172

02/28/2008

02/28/2008

Common Stock

3,172

$ 0

1,057

D

Restricted Stock Units

(4)

02/28/2008

A

1,246

(4)

(4)

Common Stock

1,246

$ 0

1,246

D

Restricted Stock Unit

(4)

02/28/2008

M

312

02/28/2008

02/28/2008

Common Stock

312

$ 0

934

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WILKENING GARRY A 1776 LINCOLN ST. SUITE 700 DENVER, CO 80203			VP-HR & Administration

Signatures

Karin M. Writer (Attorney-In-Fact)		03/03/2008
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Mr. Wilkening purchased 94 shares of the issuer's common stock on December 31, 2007, through the Employee Stock Purchase Plan.
(2)	Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock units were granted on February 28, 2007, are associated with fiscal 2006, and vest in four equal installments beginning on the grant date. The vested shares were issued to the reporting person on February 28, 2008, at which time all restrictions on the vested shares lapsed.
(3)	Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock units were granted on February 28, 2006, are associated with fiscal 2005, and vest in four equal installments beginning on the grant date. The vested shares were issued to the reporting person on February 28, 2008, at which time all restrictions on the vested shares lapsed.
(4)	Each restricted stock unit represents a contingent right to receive one share of stock. The restricted stock units were granted on February 28, 2008, are associated with fiscal 2007, and vest in four equal installments beginning on the grant date. The vested shares were issued to the reporting person on February 28, 2008, at which time all restrictions on the vested shares lapsed.

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