Seagate Technology — Director's Dealing 2013

Nov 20, 2013

SEC Form 4/A — Form 4/A

Issuer: Seagate Technology plc (STX)
CIK: 0001137789
Period of Report: 2013-09-13

Reporting Person: MORTON DAVID H JR (VP, FINANCE, TREASURER & PAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-09-13	Ordinary Shares	M	1667	$3.345	Acquired	30881	Direct
2013-09-13	Ordinary Shares	M	573	$11.065	Acquired	31454	Direct
2013-09-13	Ordinary Shares	M	610	$11.155	Acquired	32064	Direct
2013-09-13	Ordinary Shares	M	2625	$29.87	Acquired	34689	Direct
2013-09-13	Ordinary Shares	S	5475	$40.00	Disposed	29214	Direct
2013-09-13	Ordinary Shares	S	1535	$39.95	Disposed	27679	Direct
2013-09-16	Ordinary Shares	S	1407	$41.103	Disposed	26272	Direct
2013-09-17	Ordinary Shares	S	4022	$40.8646	Disposed	22250	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-09-13	NQ Stock Options	$3.345	M	1667	Disposed	2016-03-06	Ordinary Shares (1667)	Direct
2013-09-13	NQ Stock Options	$11.065	M	573	Disposed	2017-09-10	Ordinary Shares (573)	Direct
2013-09-13	NQ Stock Options	$11.155	M	610	Disposed	2018-09-12	Ordinary Shares (610)	Direct
2013-09-13	NQ Stock Options	$29.87	M	2625	Disposed	2019-09-10	Ordinary Shares (2625)	Direct

Footnotes

F1: These transactions were omitted from the original Form 4 filed by the Reporting Person on September 17, 2013.

F2: Shares sold under a 10b5-1 Trading Plan.

F3: Ordinary Shares reported sold pursuant to a 10b5-1 trading plan to cover the tax liabilities relating to the vesting of restricted stock units under an award agreement dated September 12, 2011.

F4: Ordinary Shares reported sold pursuant to a 10b5-1 trading plan to cover the tax liabilities relating to the vesting of restricted stock units under an award agreement dated September 13, 2010.

F5: These Ordinary Shares were sold in multiple transactions at sales prices ranging from $41.10 to $41.11, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnote of this Form 4.

F6: These Ordinary Shares were sold in multiple transactions at sales prices ranging from $40.75 to $40.95, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnote of this Form 4.

F7: Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a four and one half year vesting schedule. One quarter of the option shares vested on September 11, 2010. The remaining options vested in equal monthly installments over the 36 months following September 11, 2010.

F8: 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 options vest in equal monthly installments over the 36 months following September 13, 2011.

F9: 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 options vest in equal monthly installments over the 36 months following September 12, 2012.

F10: Options granted to the Reporting Person under the Issuer's 2012 Equity Incentive Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on September 10, 2013. The remaining options vest in equal monthly installments over the 36 months following September 10, 2013.