Seagate Technology — Director's Dealing 2013

May 6, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2013-05-02

Reporting Person: PARK CHONG SUP (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-02	Ordinary Shares	M	626	$6.525	Acquired	19729	Direct
2013-05-02	Ordinary Shares	M	7083	$14.825	Acquired	26812	Direct
2013-05-02	Ordinary Shares	S	7709	$38.05	Disposed	19103	Direct
2013-05-06	Ordinary Shares	M	1666	$14.825	Acquired	20769	Direct
2013-05-06	Ordinary Shares	S	1666	$41.951	Disposed	19103	Direct
2013-05-06	Ordinary Shares	S	5000	$41.9515	Disposed	21698	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-02	NQ Stock Options	$6.525	M	626	Disposed	2015-10-30	Ordinary Shares (626)	Direct
2013-05-02	NQ Stock Options	$14.825	M	7083	Disposed	2016-10-30	Ordinary Shares (7083)	Direct
2013-05-06	NQ Stock Options	$14.825	M	1666	Disposed	2016-10-30	Ordinary Shares (1666)	Direct

Footnotes

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

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at sales prices ranging from 41.95 to 41.96, 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 Seagate Technology 2004 Stock Compensation Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on October 15, 2009. The remaining options vested in equal installments over the 36 months following October 15, 2009.

F4: Options granted to the Reporting Person under the Seagate Technology 2004 Stock Compensation Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the option shares vested on October 15, 2010. The remaining options vest in equal installments over the 36 months following October 15, 2010.