Seagate Technology — Director's Dealing 2015

Aug 27, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2015-08-25

Reporting Person: RE MARK (SVP & Chief Technical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-08-25	Ordinary Shares	M	4167	$11.065	Acquired	68325	Direct
2015-08-25	Ordinary Shares	M	56000	$13.365	Acquired	124325	Direct
2015-08-25	Ordinary Shares	M	16667	$3.345	Acquired	140992	Direct
2015-08-25	Ordinary Shares	M	38500	$11.155	Acquired	179492	Direct
2015-08-25	Ordinary Shares	S	115334	$48.7541	Disposed	64158	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-08-25	NQ Stock Options	$11.065	M	4167	Disposed	2017-09-13	Ordinary Shares (4167)	Direct
2015-08-25	NQ Stock Options	$13.365	M	56000	Disposed	2018-03-21	Ordinary Shares (56000)	Direct
2015-08-25	NQ Stock Options	$3.345	M	16667	Disposed	2016-03-06	Ordinary Shares (16667)	Direct
2015-08-25	NQ Stock Options	$11.155	M	38500	Disposed	2018-09-12	Ordinary Shares (38500)	Direct

Footnotes

F1: 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.

F2: 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.

F3: 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.

F4: 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.

F5: 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.