Statement of Changes in Beneficial Ownership (4)

FORM 4

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Nygaard Jeffrey D.	2. Issuer Name and Ticker or Trading Symbol Seagate Technology plc [ STX ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Executive Vice President
(Last) (First) (Middle) 10200 S. DE ANZA BOULEVARD	3. Date of Earliest Transaction (MM/DD/YYYY) 9/30/2019
(Street) CUPERTINO, CA 95014 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	9/30/2019		M		8000 ⁽¹⁾	A	$40.16	31985	D
Ordinary Shares	9/30/2019		M		4000 ⁽¹⁾	A	$30.95	35985	D
Ordinary Shares	9/30/2019		S		12000 ⁽¹⁾	D	$53.78 ⁽²⁾	23985	D
Ordinary Shares								33730	I	Jeffrey D. Nygaard Revocable Trust U/A Dated August 17, 2009

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
NQ Stock Option	$40.16	9/30/2019		M			8000 ⁽¹⁾	9/9/2014 ⁽³⁾	9/9/2020	Ordinary Shares	8000.0	$0	2969	D
NQ Stock Option	$30.95	9/30/2019		M			4000 ⁽¹⁾	9/11/2018 ⁽⁴⁾	9/11/2024	Ordinary Shares	4000.0	$0	20870	D

Explanation of Responses:
(1)	The option exercises and sale of Ordinary Shares reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
(2)	These Ordinary Shares were sold in multiple transactions at sales prices ranging from $53.30 to $54.03, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, orthe staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in the footnote of this Form 4.
(3)	Options granted to the Reporting Person under the Seagate Technology plc 2012 Equity Incentive Plan (the "Plan") are subject to a four-year vesting schedule. One quarter of the options vested on September 9, 2014. The remaining options vested in equal monthly installments over the 36 months following September 9, 2014.
(4)	Options granted to the Reporting Person under the Plan are subject to a four-year vesting schedule. One quarter of the options vested on September 11, 2018. Subject to continuous employment, the remaining options will vest in equal monthly installments over the 36 months following September 11, 2018.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Nygaard Jeffrey D. 10200 S. DE ANZA BOULEVARD CUPERTINO, CA 95014			Executive Vice President

Signatures
/s/ Roshen Prasad Attorney-in-Fact for Jeffrey D. Nygaard		10/2/2019
^**Signature of Reporting Person		Date

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Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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