Seagate Technology — Director's Dealing 2012

Dec 20, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-12-19

Reporting Person: MARSHALL LYDIA MICHEAUX (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-19	Ordinary Shares	M	25000	$22.695	Acquired	71181	Direct
2012-12-19	Ordinary Shares	S	25000	$30.00	Disposed	46181	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-12-19	NQ Stock Option	$22.695	M	25000	Disposed	2013-10-26	Ordinary Shares (25000)	Direct

Footnotes

F1: Shares were sold under a 10b5-1 Trading Plan.

F2: Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan were subject to a four-year vesting schedule. One quarter of the shares vested on October 26, 2007. The remaining three quarters vested proportionally annually on October 26 over the three years thereafter.