Seagate Technology — Director's Dealing 2012

Nov 6, 2012

SEC Form 3/A — Form 3/A

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	35534.628	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. The restricted stock units will be converted into ordinary shares on a one-for-one basis. Subject to the Reporting Person's continuous employment, such restricted stock units will be settled in ordinary shares 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. The restricted stock units will be converted into ordinary shares on a one-for-one basis. Subject to the Reporting Person's continuous employment, such restricted stock units will be settled in ordinary shares in equal installments on each of the first four anniversaries of September 12, 2011.

F3: Includes a grant of restricted stock units of which 11,536 remain outstanding awarded to the Reporting Person. The restricted stock units will be converted into ordinary shares on a one-for-one basis. Subject to the Reporting Person's continuous employment, such restricted stock units will be settled in ordinary shares 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 ordinary shares vested on September 11, 2010. Following continuous employment, the remaining options 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 ordinary shares vested on September 13, 2011. The remaining options 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 ordinary shares vested on September 12, 2012. The remaining options 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 ordinary shares vested on September 10, 2013. The remaining options vested in equal monthly installments over the 36 months following September 10, 2013.

F8: This Amendment to the Form 3 originally timely filed on September 28, 2012 amends the direct holdings total reported in column 2 of Table I to include Ordinary Shares of Seagate Technology Plc acquired from September 13, 2011 to September 13, 2012 pursuant to vested restricted stock unit grants, which were inadvertently omitted from the original Form 3.