Seagate Technology — Director's Dealing 2012

Feb 15, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-02-13

Reporting Person: Richarz David K (Executive Vice President,Sales)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-13	Ordinary Shares	M	45000	$3.345	Acquired	63021.4967	Direct
2012-02-13	Ordinary Shares	S	45000	$25.9351	Disposed	18021.4967	Direct
2012-02-13	Ordinary Shares	S	5521	$26.0366	Disposed	12500.4967	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-13	NQ Stock Options	$3.345	M	45000	Disposed	2016-03-06	Ordinary Shares (45000)	Direct

Footnotes

F1: Includes 767 shares purchased under the Employee Stock Purchase Plan on January 31, 2012 at $11.764 per share.

F2: Options granted to the Reporting Person under the Seagate Technology's 2004 Stock Compensation Plan are subject to a four and a half year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on September 11, 2010. Following continuous employment, the remaining three quarters will vest propotionally monthly over the 36 months following September 11, 2010.