Seagate Technology — Director's Dealing 2018

May 10, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2018-05-07

Reporting Person: ValueAct Holdings, L.P. (Director, See Remarks)
Reporting Person: ValueAct Capital Master Fund, L.P. (Director, See Remarks)
Reporting Person: VA Partners I, LLC (Director, See Remarks)
Reporting Person: ValueAct Capital Management, L.P. (Director, See Remarks)
Reporting Person: ValueAct Capital Management, LLC (Director, See Remarks)
Reporting Person: ValueAct Holdings GP, LLC (Director, See Remarks)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-05-07	Forward Purchase Contract	$	P	61098	Acquired	2018-12-03	Ordinary Shares (61098)	Indirect
2018-05-08	Forward Purchase Contract	$	P	112556	Acquired	2018-12-03	Ordinary Shares (112556)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	22404700	Indirect

Footnotes

F1: Each reporting person listed herein disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F2: The securities reported herein are held by ValueAct Capital Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) VA Partners I, LLC as General Partner of ValueAct Capital Master Fund, L.P., (ii) ValueAct Capital Management, L.P. as the manager of ValueAct Capital Master Fund, L.P., (iii) ValueAct Capital Management, LLC as General Partner of ValueAct Capital Management, L.P., (iv) ValueAct Holdings, L.P. as the sole owner of the limited partnership interests of ValueAct Capital Management, L.P. and the membership interests of ValueAct Capital Management, LLC and as the majority owner of the membership interests of VA Partners I, LLC and (v) ValueAct Holdings GP, LLC as General Partner of ValueAct Holdings, L.P.

F3: On May 7, 2018, ValueAct Capital Master Fund, L.P. entered into forward contracts obligating ValueAct Capital Master Fund, L.P. to purchase 61,098 shares at $55.89 subject to conditions that become satisfied on June 2, 2018.

F4: On May 8, 2018, ValueAct Capital Master Fund, L.P. entered into forward contracts obligating ValueAct Capital Master Fund, L.P. to purchase 112,556 shares at $55.93 subject to conditions that become satisfied on June 2, 2018.