Seagate Technology — Director's Dealing 2011

Apr 27, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2011-04-26

Reporting Person: LUCZO STEPHEN J (Director, Chairman, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-04-26	Ordinary Shares	M	6249	$6.525	Acquired	9999	Direct
2011-04-26	Ordinary Shares	M	194683	$4.045	Acquired	204682	Direct
2011-04-26	Ordinary Shares	S	200932	$18.2114	Disposed	3750	Direct
2011-02-10	Ordinary Shares	J	70000	$0.00	Disposed	4643873	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-04-26	NQ Stock Options	$6.525	M	6249	Disposed	2015-10-30	Ordinary Shares (6249)	Direct
2011-04-26	NQ Stock Options	$4.045	M	194683	Disposed	2016-01-30	Ordinary Shares (194683)	Direct

Footnotes

F1: The Reporting Person transferred 75,000 shares from direct to indirect holdings on January 30, 2011 and 2,500 shares from direct to indirect holdings on January 27, 2011.

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 October 30, 2009. The remaining option shares are vesting and will continue to vest proportionally each month over the 36 months following October 30, 2009.

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 January 30, 2010. The remaining option shares are vesting and will continue to vest proportionally each month over the 36 months following January 30, 2010.