Seagate Technology — Director's Dealing 2012

Aug 13, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-08-09

Reporting Person: O MALLEY PATRICK J (EVP & Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-08-09	Ordinary Shares	M	14656	$25.48	Acquired	320592.65	Direct
2012-08-09	Ordinary Shares	S	14656	$33.0033	Disposed	305936.65	Direct
2012-08-10	Ordinary Shares	M	47500	$25.48	Acquired	353436.65	Direct
2012-08-10	Ordinary Shares	S	47500	$33.98	Disposed	305936.65	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-08-09	NQ Stock Options	$25.48	M	14656	Disposed	2013-04-27	Ordinary Shares (14656)	Direct
2012-08-10	NQ Stock Options	$25.48	M	47500	Disposed	2013-04-27	Ordinary Shares (47500)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at sales prices ranging from $33.00 to $33.01, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2: Sale was effected pursuant to a Rule 10b5-1 trading plan.

F3: Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan, are subject to a five year vesting schedule. One half of the option shares vested on April 27, 2010. The remaining option shares vested on April 27, 2011.