Seagate officer plans $12.5M stock sale

An Seagate Technology officer filed a Rule 144 notice for sell-to-cover stock sales tied to performance share vesting and tax withholding.

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) received a Rule 144 notice for planned sales of its common stock by officer John Christopher Morris. The notice covers 16,239 shares of Seagate common stock with an aggregate market value of $12,538,789.60, based on an outstanding share count of 226,644,518 shares as of September 15, 2026.

The securities to be sold arise from 30,130 common shares acquired through Performance Share Unit vesting on September 14, 2026 as compensation for services. Over the prior three months, Morris reported additional sales totaling several thousand shares on multiple dates. The filing states that sales are to be made pursuant to an issuer-mandated sell-to-cover program solely to satisfy tax withholding obligations.

Key Figures

Shares to be sold under Rule 144: 16,239 shares Aggregate market value of shares to be sold: $12,538,789.60 Shares outstanding: 226,644,518 shares +4 more

7 metrics

Shares to be sold under Rule 144 16,239 shares Planned sales of Seagate common stock reported in the notice

Aggregate market value of shares to be sold $12,538,789.60 Value for the 16,239 shares covered by the Form 144

Shares outstanding 226,644,518 shares Seagate common stock outstanding as of September 15, 2026

Shares from Performance Share Unit vesting 30,130 shares Common stock acquired on September 14, 2026 as compensation for services

Sale on August 21, 2026 4,039 shares; $3,420,119.36 Common stock sold by John C. Morris during the past 3 months

Sale on September 10, 2026 892 shares; $769,234.55 Common stock sale reported in the 3‑month history

Sale on September 14, 2026 493 shares; $385,147.62 Common stock sale reported in the 3‑month history

Key Terms

Rule 144, Performance Share Unit, 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.

Performance Share Unit financial

"Common stock | 09/14/2026 | Performance Share Unit Vesting | Issuer"

A performance share unit (PSU) is a form of executive or employee pay that promises shares (or the cash value of shares) only if the company meets specific performance targets over a set period. Think of it like a bonus cheque that only arrives if the company hits agreed goals — it aligns managers’ rewards with business results and signals to investors how leadership is being incentivized to grow value over time.

sell-to-cover financial

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

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 Seagate Technology (STX) Form 144 filing by John Christopher Morris cover?

It covers planned sales of 16,239 shares of Seagate common stock under Rule 144. The shares relate to equity compensation, and the filing gives notice of intended sales into the market through a broker.

What is the value of the Seagate (STX) shares registered in this Form 144?

The Form 144 reports an aggregate market value of $12,538,789.60 for the 16,239 shares of Seagate common stock that may be sold, using the pricing basis stated in the notice.

How many Seagate (STX) shares did John Christopher Morris receive from PSU vesting?

He is reported as having 30,130 shares of Seagate common stock to be sold that were acquired on September 14, 2026 through Performance Share Unit vesting as compensation for services.

What Seagate (STX) stock sales has John Christopher Morris reported in the past 3 months?

The notice lists sales of 168 shares on August 3, 2026, 4,039 shares on August 21, 2026, 892 shares on September 10, 2026, and 493 shares on September 14, 2026, all in Seagate common stock.

What is the stated purpose of the Seagate (STX) stock sales in this Form 144?

The filing states that sales will be made pursuant to an issuer-mandated sell-to-cover program and are solely to satisfy tax withholding obligations related to equity compensation.

How many Seagate (STX) shares are outstanding according to this Form 144?

The notice reports that 226,644,518 shares of Seagate common stock are outstanding as of September 15, 2026; this is a baseline share count, not the amount being sold.

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

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Available on EDGAR 09/15/2026 - 07:46 PM Accepted by SEC EDGAR 09/15/2026 - 07:46 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	0001988271
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	Morris John Christopher
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	16239	12538789.60	226644518	09/15/2026	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	09/14/2026	Performance Share Unit Vesting	Issuer			30130	09/14/2026	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
John C. Morris 47488 Kato Rd Fremont CA 94538	Common Stock	08/03/2026	168	137383.68
John C. Morris 47488 Kato Rd. Fremont CA 94538	Common Stock	08/21/2026	4039	3420119.36
John C. Morris 47488 Kato Rd Fremont CA 94538	Common Stock	09/10/2026	892	769234.55
John C. Morris 47488 Kato Rd Fremont CA 94538	Common Stock	09/14/2026	493	385147.62

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	09/15/2026
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 John C. Morris
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)