Seagate Technology — Director's Dealing 2013

May 8, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2013-05-06

Reporting Person: REYES GREGORIO (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-06	Ordinary Shares	M	10000	$26.465	Disposed	19485	Direct
2013-05-06	Ordinary Shares	M	2500	$6.525	Disposed	21985	Direct
2013-05-06	Ordinary Shares	M	3541	$14.825	Disposed	25526	Direct
2013-05-06	Ordinary Shares	S	16041	$41.3734	Disposed	9485	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-06	NQ Stock Options	$26.465	M	10000	Disposed	2014-10-25	Ordinary Shares (10000)	Direct
2013-05-06	NQ Stock Options	$6.525	M	2500	Disposed	2015-10-30	Ordinary Shares (2500)	Direct
2013-05-06	NQ Stock Options	$14.825	M	3541	Disposed	2016-10-28	Ordinary Shares (3541)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. Shares were sold in multiple transactions at sales prices ranging from $41.36 to $41.41, inclusive. The Reporting Person undertakes to provide 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: 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 October 15, 2008. The remaining option shares vested in equal monthly installments over the 36 months following October 15, 2008.

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 October 15, 2009. The remaining option shares vested in equal monthly installments over the 36 months following October 15, 2009.

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 October 15, 2010. The remaining option shares vest in equal monthly installments over the 36 months following October 15, 2010.