Seagate Technology — Director's Dealing 2012

Feb 3, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-02-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-01	Ordinary Shares	M	20000	$4.045	Acquired	58750	Direct
2012-02-01	Ordinary Shares	S	20000	$23.7207	Disposed	38750	Direct
2012-02-01	Ordinary Shares	S	250000	$24.0441	Disposed	240367	Indirect
2012-02-01	Ordinary Shares	S	250000	$24.0441	Disposed	175951	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-01	NQ Stock Options	$4.045	M	20000	Disposed	2016-01-30	Ordinary Shares (20000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	3592192	Indirect

Footnotes

F1: Shares were sold under a 10b5-1 plan adopted by the Reporting Person on May 27, 2011.

F2: Shares were sold under a 10b5-1 plan adopted by Red Zone Holdings on November 30, 2011.

F3: Shares were sold under a 10b5-1 plan adopted by Red Zone Holdings II on November 30, 2011.

F4: 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.