Seagate Technology — Director's Dealing 2012

Nov 26, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-11-21

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-11-21	Ordinary Shares	M	3954	$13.73	Acquired	412566.65	Direct
2012-11-21	Ordinary Shares	M	31774	$3.345	Acquired	444340.65	Direct
2012-11-21	Ordinary Shares	M	54166	$11.065	Acquired	498506.65	Direct
2012-11-21	Ordinary Shares	S	57280	$26.7746	Disposed	441226.65	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-11-21	NQ Stock Options	$13.73	M	3954	Disposed	2015-09-12	Ordinary Shares (3954)	Direct
2012-11-21	NQ Stock Options	$3.345	M	31774	Disposed	2016-03-06	Ordinary Shares (31774)	Direct
2012-11-21	NQ Stock Options	$11.065	M	54166	Disposed	2017-09-13	Ordinary Shares (54166)	Direct

Footnotes

F1: This transaction is a "sell to cover" transaction in which the Reporting Person used the proceeds from the sale of shares in part to fund the exercise of the options.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at sales prices ranging from $26.62 to $27.00, 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.

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 September 12, 2009. The remaining option shares vest in equal monthly installments over the 36 months following September 12, 2009.

F4: Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a four and a half year vesting schedule. One quarter of the option shares vested on September 11, 2010. Following continuous employment, the remaining option shares vest in equal monthly installments over the 36 months following September 11, 2010.

F5: Options granted to the Reporting Person under the Issuer's 2001 Share Option Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on September 13, 2011. The remaining option shares vest in equal monthly installments over the 36 months following September 13, 2011.