Seagate Technology — Director's Dealing 2013

Jul 3, 2013

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2013-07-01

Reporting Person: RE MARK (SVP & Chief Technical Officer)

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	44379.503	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
NQ Stock Options	$3.345	2016-03-06	Oridinary Shares (16667)		Direct
NQ Stock Options	$11.065	2017-09-13	Ordinary Shares (19792)		Direct
NQ Stock Options	$13.365	2018-03-21	Ordinary Shares (56000)		Direct
NQ Stock Options	$11.155	2018-09-12	Ordinary Shares (50800)		Direct
NQ Stock Options	$29.87	2019-09-10	Ordinary Shares (18030)		Direct

Footnotes

F1: Includes a grant of restricted stock units of which 6,000 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 13, 2010.

F2: Includes a grant of restricted stock units of which 4,800 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 March 8, 2011.

F3: Includes a grant of restricted stock units of which 12,750 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.

F4: 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.

F5: 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

F6: 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.

F7: 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 March 8, 2012. The remaining options will vest in equal monthly installments over the 36 months following March 8, 2012.

F8: 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 will vest in equal monthly installments over the 36 months following September 12, 2012.

F9: 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 will vest in equal monthly installments over the 36 months following September 10, 2013.