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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

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 (MM/DD/YYYY)

7/21/2015
(Street)

CUPERTINO, CA 95014
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   7/21/2015     A    65000   (1) A $0.00   177130   D    
Ordinary Shares   7/21/2015     A    21585   (2) A $0.00   198715   D    
Ordinary Shares   7/21/2015     A    11950   (3) A $0.00   210665   D    
Ordinary Shares   11/4/2014     G    50000   D $0.00   1106190   I   Stephen J Luczo Revocable Trust dated January 26, 2001  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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

Explanation of Responses:
( 1)  On July 21, 2015, The Compensation Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to 65,000 of the 260,000 Performance Share Units granted to Mr. Luczo on September 12, 2011. The 65,000 Ordinary Shares will vest on September 12, 2015, subject to the continuous service through such date.
( 2)  On July 21, 2015, The Compensation Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to 21,585 of the 86,340 Performance Share Units granted to Mr. Luczo on August 1, 2012. The 21,585 Ordinary Shares will vest on August 1, 2015, subject to the continuous service through such date.
( 3)  On July 21, 2015, The Compensation Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to 11,950 of the 47,800 Performance Share Units granted to Mr. Luczo on September 9, 2014. The 11,950 Ordinary Shares will vest on September 9, 2015, subject to the continuous service through such date.

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/ Jolene Mendelsohn by power-of-attorney 7/23/2015
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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