Seagate Technology — Director's Dealing 2017

May 17, 2017

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2017-05-08

Reporting Person: MASSARONI KENNETH M (SVP, Interim CLO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Oridnary Shares	123133	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
NQ Stock Option	$40.16	2020-09-09	Ordinary Shares (35000.0)		Direct
NQ Stock Option	$60.83	2021-09-09	Ordinary Shares (18000.0)		Direct
NQ Stock Option	$50.1	2022-09-09	Ordinary Shares (45016.0)		Direct

Footnotes

F1: Options granted to the Reporting Person on September 9, 2013 under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the options vested on September 9, 2014. The remaining options will vest in equal monthly installments over the 36 months following September 9, 2014.

F2: Options granted to the Reporting Person on September 9, 2014 under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the options vested on September 9, 2015. The remaining options will vest in equal monthly installments over the 36 months following September 9, 2015.

F3: Options granted to the Reporting Person on September 9, 2015 under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. Subject to continuous employment, one quarter of the options vested on September 9, 2016. The remaining options will vest in equal monthly installments over the 36 months following September 9, 2016.