Seagate Technology — Director's Dealing 2012

Sep 28, 2012

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2012-09-18

Reporting Person: DEHAAN DOUGLAS J (General Manager, Samsung HDD)

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	30953.404	Direct
Ordinary Shares	91707	Indirect
Ordinary Shares	1018	Indirect
Ordinary Shares	1018	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
NQ Stock Options	$3.345	2016-03-06	Ordinary Shares (108334)		Direct
NQ Stock Options	$11.065	2017-09-13	Ordinary Shares (22136)		Direct
NQ Stock Options	$11.155	2018-09-12	Ordinary Shares (63400)		Direct
NQ Stock Options	$29.87	2019-09-10	Ordinary Shares (18030)		Direct

Footnotes

F1: Includes a grant of restricted stock units of which 5,100 remain outstanding awarded to the Reporting Person on September 10, 2010 under the Seagate Technology plc 2004 Stock Compensation Plan. Each restricted stock unit represents a contingent right to receive one share of Seagate ordinary shares. Subject to the Reporting Person's continuous employment, restricted stock units continue to vest and be delivered in equal installments on each of the first four anniversaries of September 10, 2010.

F2: Includes a grant of restricted stock units of which 11,400 remain outstanding awarded to the Reporting Person on September 12, 2011 under the Seagate Technology plc 2004 Stock Compensation Plan. Each restricted stock unit represents a contingent right to receive one share of Seagate ordinary shares. Subject to the Reporting Person's continuous employment, restricted stock units will vest and be delivered in equal installments on each of the first four anniversaries of September 12, 2011.

F3: Includes a grant of restricted stock units of 11,536 awarded to the Reporting Person on September 10, 2012 under the Seagate Technology plc Incentive Equity Award Plan. Each restricted stock unit represents a contingent right to receive one share of Seagate ordinary shares. Subject to the Reporting Person's continuous employment, restricted stock units will vest and be delivered in equal installments on each of the first four anniversaries of September 10, 2012.

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.

F6: 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, 2012. The remaining option shares vested in equal monthly installments over the 36 months following September 12, 2012.

F7: Options granted to the Reporting Person under the Issuer's 2012 Incentive Equity Award Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on September 10, 2013. The remaining option shares vested in equal monthly installments over the 36 months following September 10, 2013.