Seagate Technology — Director's Dealing 2012

Aug 16, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-08-15

Reporting Person: MORTON DAVID H JR (VP, FINANCE, TREASURER &PAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-08-15	Ordinary Shares	M	573	$11.065	Acquired	21380	Direct
2012-08-15	Ordinary Shares	M	250	$13.73	Acquired	21630	Direct
2012-08-15	Ordinary Shares	M	1667	$3.345	Acquired	23297	Direct
2012-08-15	Ordinary Shares	S	2490	$33.83	Disposed	20807	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-08-15	NQ Stock Options	$11.065	M	573	Disposed	2017-09-13	Ordinary Shares (573)	Direct
2012-08-15	NQ Stock Options	$13.73	M	250	Disposed	2015-09-12	Ordinary Shares (250)	Direct
2012-08-15	NQ Stock Options	$3.345	M	1667	Disposed	2016-03-06	Ordinary Shares (1667)	Direct

Footnotes

F1: Shares sold under a 10b5-1 Trading Plan.

F2: Options granted to the Reporting Person under the Issuer's 2001 Share 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 vest proportionally each month 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 September 12, 2009. The remaining option shares vest proportionally each month over the 36 months following September 12, 2009.

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 vest proportionally each month over the 36 months following September 11, 2010.