William D. Mosley - 19 Mar 2026 Form 4 Insider Report for Seagate Technology Holdings plc (STX)

Role: CEO, Director
Signature: /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley
Issuer symbol: STX
Transactions as of: 19 Mar 2026
Net transactions value: -$10,000,034
Form type: 4
Filing time: 23 Mar 2026, 16:20:08 UTC
Previous filing: 12 Mar 2026
Next filing: 02 Apr 2026
SEC: View on sec.gov

Quoteable Key Fact

"William D. Mosley filed Form 4 for Seagate Technology Holdings plc (STX) on 23 Mar 2026."

Quick Takeaways

This page summarizes William D. Mosley's Form 4 filing for Seagate Technology Holdings plc (STX).
1 reported transaction and 0 derivative rows are listed below.
Filing timestamp: 23 Mar 2026, 16:20.

What Changed

Previous filing in this sequence was filed on 12 Mar 2026.
Current net transaction value: -$10,000,034.

Why This Matters

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Official SEC Source

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

See Original Filing

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MOSLEY WILLIAM D	CEO, Director	SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT	/s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley	23 Mar 2026	0001388390

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STX	Ordinary Shares	Sale	$10,000,034	-24,584	-6.1%	$406.77	375,591	19 Mar 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The reported transaction reflects the contribution of issuer securities to an exchange fund in exchange for interest in the exchange fund. For purposes of Section 16, the transaction is being reported as a sale. The value of the securities contributed, and the corresponding interest received, was determined based on closing stock price of the issuer's common stock on March 18, 2026, with an aggregate value of approximately $10,000,000.

Content

The reported transaction reflects the contribution of issuer securities to an exchange fund in exchange for interest in the exchange fund. For purposes of Section 16, the transaction is being reported as a sale. The value of the securities contributed, and the corresponding interest received, was determined based on closing stock price of the issuer's common stock on March 18, 2026, with an aggregate value of approximately $10,000,000.