Seagate Technology — Director's Dealing 2013

Sep 5, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2013-09-03

Reporting Person: MASSARONI KENNETH M (EVP, General Counsel, CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-09-03	Ordinary Shares	M	4000	$3.345	Acquired	55552	Direct
2013-09-03	Ordinary Shares	M	1750	$11.065	Acquired	57302	Direct
2013-09-03	Ordinary Shares	S	5750	$38.77	Disposed	51552	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-09-03	NQ Stock Options	$3.345	M	4000	Disposed	2016-03-06	Ordinary Shares (4000)	Direct
2013-09-03	NQ Stock Options	$11.065	M	1750	Disposed	2017-09-13	Ordinary Shares (1750)	Direct

Footnotes

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

F2: Options granted to the Reporting Person under the Seagate Technology 2004 Stock Compensation Plan are subject to a four and one half year vesting schedule. One quarter of the options vested on September 11, 2010. Following continuous employment, the remaining options vest proportionally monthly over the 36 months following September 11, 2010.

F3: Options granted to the Reporting Person under the Seagate Technology 2001 Stock Option Plan are subject to a four year vesting schedule. One quarter of the options vested on September 13, 2011. Following continuous employment, the remaining options vest proportionally monthly over the 36 months following September 13, 2011.