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 * PARK CHONG SUP   2. Issuer Name and Ticker or Trading Symbol Seagate Technology plc [STX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) SEAGATE TECHNOLOGY PLC, 10200 S. DE ANZA BOULEVARD 3. Date of Earliest Transaction (Month/Day/Year) 05/02/2013 (Street) CUPERTINO, CA 95014 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 Ordinary Shares 05/02/2013   M   626 A $ 6.525 19,729 D   Ordinary Shares 05/02/2013   M   7,083 A $ 14.825 26,812 D   Ordinary Shares 05/02/2013   S   7,709 D $ 38.05 (1) 19,103 D   Ordinary Shares 05/06/2013   M   1,666 A $ 14.825 20,769 D   Ordinary Shares 05/06/2013   S   1,666 D $ 41.951 19,103 D   Ordinary Shares 05/06/2013   S   5,000 D $ 41.9515 (2) 21,698 I The Park Family Trust

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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

NQ Stock Options

$ 6.525

05/02/2013

M

626

10/15/2009(3)

10/30/2015

Ordinary Shares

626

$ 0

0

D

NQ Stock Options

$ 14.825

05/02/2013

M

7,083

10/15/2010(4)

10/30/2016

Ordinary Shares

7,083

$ 0

2,917

D

NQ Stock Options

$ 14.825

05/06/2013

M

1,666

10/15/2010(4)

10/30/2016

Ordinary Shares

1,666

$ 0

1,251

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PARK CHONG SUP SEAGATE TECHNOLOGY PLC 10200 S. DE ANZA BOULEVARD CUPERTINO, CA 95014	X

Signatures

/s/ Roberta S. Cohen by power of attorney		05/06/2013
**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)	Shares sold under a 10b5-1 Trading Plan.
(2)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at sales prices ranging from 41.95 to 41.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(3)	Options granted to the Reporting Person under the Seagate Technology 2004 Stock Compensation Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on October 15, 2009. The remaining options vested in equal installments over the 36 months following October 15, 2009.
(4)	Options granted to the Reporting Person under the Seagate Technology 2004 Stock Compensation Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on October 15, 2010. The remaining options vest in equal installments over the 36 months following October 15, 2010.

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