Edgar Filing: LUCZO STEPHEN J

Ownership Submission

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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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

LUCZO STEPHEN J

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
__X__ Officer (give title below)	_____ Other (specify below)
Chairman, President and CEO

(Last)

(First)

(Middle)

SEAGATE TECHNOLOGY PLC, 920 DISC DRIVE

3. Date of Earliest Transaction (Month/Day/Year)
07/27/2010

(Street)

SCOTTS VALLEY, CA 95067

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	07/27/2010		A		75,000 ⁽¹⁾	A	$ 0	81,250 ⁽²⁾	D

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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

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
LUCZO STEPHEN J SEAGATE TECHNOLOGY PLC 920 DISC DRIVE SCOTTS VALLEY, CA 95067	X		Chairman, President and CEO

Signatures

/S/ Roberta S. Cohen for Stephen J. Luczo		11/12/2010
^**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)	On July 27, 2010, the Compensation Committee of the Board of Directors of the Issuer authorized and confirmed that the performance metrics were met with respect to 75,000 of the 150,000 Performance Shares (the "2009 Shares") granted to Mr. Luczo on January 30, 2009 and reported on Mr. Luczo's Form 4 dated February 3, 2009.
(2)	Excludes 305,560 Performance Unit Shares previously reported on Mr. Luczo's Form 4 dated September 15, 2010 and 75,000 of the 2009 Shares previously reported on Mr. Luczo's Form 4 dated February 3, 2009. The vesting of such Performance Unit Shares and 2009 Shares remains subject to the achievement of performance goals that are not tied to the market price of the Company's ordinary shares. Pursuant to the Securities and Exchange Commission's interpretative guidance, these Performance Unit Shares and 2009 Shares are not required to be reported on Mr. Luczo's Section 16 filings until such performance goals have been achieved.

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