Seagate officer plans 4,000-share tax-cover sale

Seagate Technology Holdings plc (STX) is named as the issuer in a Rule 144 notice filed for officer James C. Lee.

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) is named as the issuer in a Rule 144 notice filed for officer James C. Lee. The notice covers a proposed sale of up to 4,000 shares of Seagate common stock on NASDAQGS through Morgan Stanley. The filing also lists Seagate common shares underlying restricted stock units vesting on 08/20/2026 in amounts of 5,698, 1,710, and 1,512 shares as compensation for services. Over the prior three months, a separate sale of 543 shares of Seagate common stock is reported. The remarks state that sales are to be made pursuant to an issuer-mandated sell-to-cover arrangement solely to satisfy tax withholding obligations.

Key Figures

Proposed shares to be sold: 4,000 shares of Common Stock Aggregate market value of securities to be sold: $3,397,419.20 Shares outstanding: 226,644,518 shares +5 more

8 metrics

Proposed shares to be sold 4,000 shares of Common Stock Covered by the Form 144 notice for sale on NASDAQGS through Morgan Stanley

Aggregate market value of securities to be sold $3,397,419.20 Associated with the 4,000 shares of Seagate common stock in the Rule 144 notice

Shares outstanding 226,644,518 shares Seagate common stock shares outstanding referenced in the Rule 144 information

Restricted Stock Unit Vesting block 1 5,698 shares Common stock from RSU vesting on 08/20/2026 as compensation for services

Restricted Stock Unit Vesting block 2 1,710 shares Common stock from RSU vesting on 08/20/2026 as compensation for services

Restricted Stock Unit Vesting block 3 1,512 shares Common stock from RSU vesting on 08/20/2026 as compensation for services

Shares sold in past 3 months 543 shares Common stock sold on 07/22/2026 for $491,419.72

Aggregate value of past 3-month sale $491,419.72 Value of 543 Seagate common shares sold on 07/22/2026

Key Terms

Rule 144, Restricted Stock Unit Vesting, sell-to-cover, tax withholding obligations

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Unit Vesting financial

"Common stock | 08/20/2026 | Restricted Stock Unit Vesting | Issuer"

sell-to-cover financial

"Sales to be made pursuant to Issuer mandated sell-to-cover solely to satisfy tax"

Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.

tax withholding obligations financial

"sell-to-cover solely to satisfy tax withholding obligations."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing for STX disclose about planned share sales?

The Form 144 for Seagate Technology Holdings plc (STX) discloses that officer James C. Lee may sell up to 4,000 shares of Seagate common stock on NASDAQGS through Morgan Stanley under Rule 144.

Who is the insider involved in the STX Form 144 and what is their role?

The insider named is James C. Lee, identified as an officer of Seagate Technology Holdings plc. The notice is signed by Dawn Ledbetter as Attorney-in-Fact for James C. Lee.

How many Seagate (STX) shares has James C. Lee sold in the past three months?

Over the past three months, the filing reports that 543 shares of Seagate common stock were sold on 07/22/2026 for an aggregate value of $491,419.72.

What is the stated purpose of the proposed STX share sales in this Form 144?

The remarks state the sales are to be made pursuant to an issuer-mandated sell-to-cover arrangement, used solely to satisfy tax withholding obligations related to equity compensation.

What restricted stock unit vesting is disclosed for STX in this Form 144?

The filing lists Seagate common stock from Restricted Stock Unit Vesting on 08/20/2026 in three blocks: 5,698 shares, 1,710 shares, and 1,512 shares, each described as compensation for services from the issuer.

What aggregate market value and shares outstanding are associated with the STX Form 144 notice?

The notice ties the proposed 4,000-share sale to an aggregate market value of $3,397,419.20 and references 226,644,518 Seagate common shares outstanding in connection with the Rule 144 information.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/21/2026 - 07:21 PM Accepted by SEC EDGAR 08/21/2026 - 07:20 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001773423
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Seagate Technology Holdings plc
SEC File Number	001-31560
Address of Issuer	121 WOODLANDS AVENUE 5 SINGAPORE SINGAPORE 739009
Phone	65 6412 5172
Name of Person for Whose Account the Securities are To Be Sold	Lee James CI
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Morgan Stanley 1 New York Plaza 8th Floor New York NY 10004	4000	3397419.20	226644518	08/21/2026	NASDAQGS

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common stock	08/20/2026	Restricted Stock Unit Vesting	Issuer			5698	08/20/2026	Compensation for services
Common Stock	08/20/2026	Restricted Stock Unit Vesting	Issuer			1710	08/20/2026	Compensation for services
Common Stock	08/20/2026	Restricted Stock Unit Vesting	Issuer			1512	08/20/2026	Compensation for services

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
James C. Lee 47488 Kato Road Fremont CA 94538	Common Stock	07/22/2026	543	491419.72

144: Remarks and Signature

Remarks	Sales to be made pursuant to Issuer mandated sell-to-cover solely to satisfy tax withholding obligations.
Date of Notice	08/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/20/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Dawn Ledbetter. Attorney-in-Fact for James C. Lee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)