STX Seagate Technology Holdings PLC

[ ] 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 * SCHUELKE KATHERINE	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) SVP, CLO & Corporate Secretary
(Last)          (First)          (Middle) SEAGATE TECHNOLOGY PLC, 10200 S. DE ANZA BOULEVARD	3. Date of Earliest Transaction (MM/DD/YYYY) 9/9/2019
(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)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	9/10/2019		M		3907	A	$0	27816 (1)	D
Ordinary Shares	9/10/2019		F		1352 (2)	D	$55.33	26464	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share Unit	(3)	9/9/2019		A		7229		(4)	(4)	Ordinary Shares	7229.0 (4)	$0	7229	D
Restricted Share Unit	(3)	9/10/2019		M			3907	(5)	(5)	Ordinary Shares	3907.0	$0	11723	D

Explanation of Responses:
(1)	Includes 246 Ordinary Shares purchased by Reporting Person on July 31, 2019 under the Issuer's Employee Stock Purchase Plan. Such acquisition is exempt from reporting pursuant to Rule 16b-3 under the Securities Exchange Act of 1934.
(2)	These Ordinary Shares are withheld securities to cover tax liabilities incident to the vesting of Restricted Share Units ("RSUs").
(3)	Each RSU represents a contingent right to receive one share of Issuer's Ordinary Shares.
(4)	Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology plc 2012 Equity Incentive Plan (the "Plan") . Subject to the Reporting Person's continuous employment, such RSUs vest as to one-quarter of the shares on September 9, 2020 and each one-year anniversary thereafter.
(5)	The RSUs, originally granted to the Reporting Person under the Plan for 15,630 shares, of which 3,907 shares have been released, vested as to one-quarter of the shares on September 10, 2019 and each one-year anniversary thereafter.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SCHUELKE KATHERINE SEAGATE TECHNOLOGY PLC 10200 S. DE ANZA BOULEVARD CUPERTINO, CA 95014			SVP, CLO & Corporate Secretary

Signatures
/s/ Laurie A. Webb Attorney-in-Fact for Katherine E. Schuelke		9/11/2019
**Signature of Reporting Person		Date

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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

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