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: BIONDI FRANK (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-06	Ordinary Shares	M	10625	$22.695	Acquired	30858	Direct
2013-05-06	Ordinary Shares	M	626	$6.525	Acquired	31484	Direct
2013-05-06	Ordinary Shares	M	8123	$14.825	Acquired	39607	Direct
2013-05-06	Ordinary Shares	S	19374	$42.0491	Disposed	20233	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-06	NQ Options	$22.695	M	10625	Disposed	2013-10-26	Ordinary Shares (10625)	Direct
2013-05-06	NQ Options	$6.525	M	626	Disposed	2015-10-30	Ordinary Shares (626)	Direct
2013-05-06	NQ Options	$14.825	M	8123	Disposed	2016-10-28	Ordinary Shares (8123)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	23198	Indirect

Footnotes

F1: On November 8, 2012, the Reporting Person transferred 1,250 shares from direct holdings to the trust. Such transfer is exempt from reporting pursuant to Rule 16a-13 under the Securities Exchange Act of 1934.

F2: The price reported in Column 4 is a weighted average price. Shares were sold in multiple transactions at sales prices ranging from $42.04 to $42.06, 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.

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 26, 2007. The remaining option shares vested in equal annual installments over the 3 years following October 26, 2007.

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

F5: 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.