Seagate Technology — Director's Dealing 2011

Nov 18, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2011-11-16

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-16	Ordinary Shares	M	20000	$4.045	Acquired	58750	Direct
2011-11-16	Ordinary Shares	S	20000	$17.0155	Disposed	38750	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-16	NQ Stock Options	$4.045	M	20000	Disposed	2016-01-30	Ordinary Shares (20000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	5072192	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: Includes 466,567 shares transferred from direct to indirect holdings of which 464,067 were transferred on November 16, 2011 and 2,500 shares were transferred on November 8, 2011.

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 12, 2010. The remaining option shares are vesting and will continue to vest proportionally each month over the 36 months following January 12, 2010.