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 and CEO
(Last)
(First)
(Middle)
SEAGATE TECHNOLOGY PLC, 10200 S. DE ANZA BOULEVARD
3. Date of Earliest Transaction (Month/Day/Year)
11/01/2013
(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 11/01/2013   S(1)   187,100 D $ 48.8056 (2) 284,132 D  
Ordinary Shares 11/04/2013   M   417 A $ 6.525 284,549 D  
Ordinary Shares 11/04/2013   M   364,584 A $ 4.045 649,133 D  
Ordinary Shares 11/04/2013   M   120,312 A $ 11.065 769,445 D  
Ordinary Shares 11/04/2013   M   59,956 A $ 30.23 829,401 D  
Ordinary Shares 11/04/2013   S(3)   326,300 D $ 49.0865 (4) 503,101 D  
Ordinary Shares               1,304,500 I Stephen J Luczo Revocable 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 11/04/2013   M     417 10/15/2009(5) 10/30/2015 Ordinary Shares 417 $ 0 0 D  
NQ Stock Options $ 4.045 11/04/2013   M     364,584 01/12/2010(6) 01/30/2016 Ordinary Shares 364,584 $ 0 0 D  
NQ Stock Options $ 11.065 11/04/2013   M     120,312 09/13/2011(7) 09/13/2017 Ordinary Shares 120,312 $ 0 94,532 D  
NQ Stock Options $ 30.23 11/04/2013   M     59,956 08/01/2013(8) 08/01/2019 Ordinary Shares 59,956 $ 0 131,904 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
LUCZO STEPHEN J
SEAGATE TECHNOLOGY PLC
10200 S. DE ANZA BOULEVARD
CUPERTINO, CA 95014
  X     Chairman and CEO  

Signatures

 /S/ Roberta S Cohen by power of attorney   11/05/2013
**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) Ordinary Shares reported sold pursuant to a 10b5-1 trading plan to cover the tax liabilities relating to the vesting of performance stock units.
(2) These Ordinary Shares were sold in multiple transactions at sales prices ranging from $48.40 to 49.115 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 ranges set forth in the footnote of this Form 4.
(3) This transaction is a "sell to Cover" transaction in which the Reporting Person used the proceeds from the sale of shares in part to fund the exercise of the options.
(4) These Ordinary Shares were sold in multiple transactions at sales prices ranging from $49.00 to 49.26 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 ranges set forth in the footnote of this Form 4.
(5) Options granted to the Reporting Person under the Seagate Technology's 2004 Stock Compensation Plan are subject to four-year vesting schedule. One quarter of the option shares vested on October 15, 2009. The Remaining options vested monthly over the 36 months following October 15, 2009.
(6) Options granted to the Reporting Person under the Seagate Technology's 2004 Stock Compensation Plan are subject to four-year vesting schedule. One quarter of the option shares vested on January 12, 2010. The Remaining options vested monthly over the 36 months following January 12, 2010.
(7) Options granted to the Reporting Person under the Seagate Technology 2001 Stock Option Plan are subject to a four year vesting schedule. One quarter of the options vested on September 13, 2011. Following continuous employment, the remaining options vest proportionately over the 36 months following September 13, 2011.
(8) Options granted to the Reporting Person under the Seagate Technology plc 2012 Equity Incentive Plan (the "Plan") are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the options vested August 1, 2013.The remaining options vest in equal monthly installments over the 36 months following August 1, 2013.

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