Seagate Technology — Director's Dealing 2011

Nov 10, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2011-11-08

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-08	Ordinary Shares	M	1171567	$4.045	Acquired	1212817	Direct
2011-11-08	Ordinary Shares	S	687500	$17.9532	Disposed	525317	Direct
2011-11-09	Ordinary Shares	M	20000	$4.045	Acquired	545317	Direct
2011-11-09	Ordinary Shares	S	20000	$17.5672	Disposed	525317	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-08	NQ Stock Options	$4.045	M	1171567	Disposed	2016-01-30	Ordinary Shares (1171567)	Direct
2011-11-09	NQ Stock Options	$4.045	M	20000	Disposed	2016-01-30	Ordinary Shares (20000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	4605625	Indirect
Ordinary Shares	490367	Indirect
Ordinary Shares	425951	Indirect

Footnotes

F1: Shares were sold under a 10b5-1 plan adopted by the Reporting Person on May 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 January 12, 2010. The remaining option shares are vesting and will continue to vest proportionally each month over the 36 months following January 12, 2010.