Seagate Technology — Director's Dealing 2012

Apr 24, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-04-20

Reporting Person: Whitmore Robert W (EVP & Chief Technical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-04-20	Ordinary Shares	M	40000	$4.045	Acquired	93704	Direct
2012-04-20	Ordinary Shares	M	60000	$15.065	Acquired	153704	Direct
2012-04-20	Ordinary Shares	S	50000	$28.9773	Disposed	103704	Direct
2012-04-20	Ordinary Shares	S	10000	$28.9385	Disposed	93704	Direct
2012-04-20	Ordinary Shares	S	40000	$28.9392	Disposed	53704	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-04-20	NQ Stock Options	$4.045	M	40000	Disposed	2016-01-30	Ordinary Shares (40000)	Direct
2012-04-20	NQ Stock Options	$15.065	M	60000	Disposed	2012-09-27	Ordinary Shares (60000)	Direct

Footnotes

F1: 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 January 12, 2010. The remaining option shares vest proportionally each month over the 36 months following January 12, 2010.

F2: 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 27, 2006. The remaining option shares vest proportionally each month over the 36 months following September 27, 2006.