Edgar Filing: Seagate Technology plc

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 ^*

RE MARK

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)
SVP & Chief Technical Officer

(Last)

(First)

(Middle)

SEAGATE TECHNOLOGY PLC, 10200 S. DE ANZA BOULEVARD

3. Date of Earliest Transaction (Month/Day/Year)
08/25/2015

(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)
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	08/25/2015		M		4,167	A	$ 11.065	68,325	D
Ordinary Shares	08/25/2015		M		56,000	A	$ 13.365	124,325	D
Ordinary Shares	08/25/2015		M		16,667	A	$ 3.345	140,992	D
Ordinary Shares	08/25/2015		M		38,500	A	$ 11.155	179,492	D
Ordinary Shares	08/25/2015		S		115,334	D	$ 48.7541 ⁽¹⁾	64,158	D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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.		SEC 1474 (9-02)

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

NQ Stock Options

$ 11.065

08/25/2015

4,167

09/13/2011⁽²⁾

09/13/2017

Ordinary Shares

4,167

$ 0

NQ Stock Options

$ 13.365

08/25/2015

56,000

03/21/2012⁽³⁾

03/21/2018

Ordinary Shares

56,000

$ 0

NQ Stock Options

$ 3.345

08/25/2015

16,667

09/11/2010⁽⁴⁾

03/06/2016

Ordinary Shares

16,667

$ 0

NQ Stock Options

$ 11.155

08/25/2015

38,500

09/12/2012⁽⁵⁾

09/12/2018

Ordinary Shares

38,500

$ 0

12,300

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
RE MARK SEAGATE TECHNOLOGY PLC 10200 S. DE ANZA BOULEVARD CUPERTINO, CA 95014			SVP & Chief Technical Officer

Signatures

/s/ Jolene Mendelsohn by power-of-attorney		08/27/2015
^**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)	These Ordinary Shares were sold in multiple transactions at sales prices ranging from $48.70 to $49.05, 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.
(2)	Options granted to the Reporting Person under the Issuer's 2001 Stock Option Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on September 13, 2011. The remaining option shares vested in equal monthly installments over the 36 months following September 13, 2011.
(3)	Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on March 21, 2012. The remaining option shares vested in equal monthly installments over the 36 months following March 21, 2012.
(4)	Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a four and one half-year vesting schedule. One quarter of the option shares vested on September 11, 2010. The remaining option shares vested in equal monthly installments over the 36 months following September 11, 2010.
(5)	Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on September 12, 2012. The remaining option shares vested in equal monthly installments over the 36 months following September 12, 2012.

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