Malley Patrick J O Form 4 Seagate Technology / MALLEY PATRICK J O ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

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

1. Name and Address of Reporting Person^*

O MALLEY PATRICK J

(Last) (First) (Middle)

SEAGATE TECHNOLOGY PLC

10200 S. DE ANZA BOULEVARD

(Street)

CUPERTINO CA 95014

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Seagate Technology plc [ STX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
EVP & Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2015

4. If Amendment, Date of 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

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	09/10/2015		F(1)		2,819	D	$50.1	116,756	D
Ordinary Shares	09/10/2015		F(1)		92	D	$50.1	1,258	I	By spouse
Ordinary Shares	09/11/2015		F(1)		2,361	D	$49.22	114,395	D
Ordinary Shares	09/11/2015		F(1)		111	D	$49.22	1,147	I	By spouse
Ordinary Shares	09/14/2015		F		7,632	D	$48.94	106,763	D
Ordinary Shares	09/21/2015		A		62,800(2)	A	$0.00	169,563	D
Ordinary Shares	09/21/2015		A		995(3)	A	$0.00	2,142	I	By spouse
Ordinary Shares	09/23/2015		F		32,770	D	$46.2	136,793	D
Ordinary Shares								401,557	I	Patrick J. O'Malley III Separate Property Trust

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 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: 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. Reporting of this transaction was delayed due to an administrative error in connection with the Issuer's adoption of a net share settlement program for taxes incurred by officers upon the vesting of equity awards.

2. On September 21, 2015, the Compensation Committee of the Board of Directors of the Issuer determined that the performance conditions were met with respect to 62,800 of the 80,000 Performance Share Units granted to Mr. O'Malley on September 10, 2012. Achievement of performance objectives resulted in the Reporting Person earning Ordinary Shares in the amount of 157% of the Performance Share Units granted. The 62,800 Ordinary Shares vested on September 21, 2015.

3. Granted to the Reporting Person's spouse on September 21, 2015 by the Compensation Committee under the Issuer's 2012 Equity Incentive Plan and will vest in equal amounts on the anniversary of the grant date over the next four years.

Remarks:

	/s/ Jolene Mendelsohn by Power of Attorney	09/23/2015
	** 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).
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