Seagate officer plans sale of 50,498 shares

Seagate officer Gianluca Romano filed a Rule 144 notice to sell 50,498 shares after exercising stock options, following several prior share sales in recent months.

Rhea-AI Filing Summary

Seagate Technology Holdings plc (STX) has a notice of proposed sale filed on behalf of officer Gianluca Romano under Rule 144. Romano plans to sell 50,498 shares of common stock on September 11, 2026, via Morgan Stanley Smith Barney LLC, following an exercise of stock options for cash.

The notice also lists Romano’s sales of Seagate common stock during the prior three months, including transactions on August 7, August 21, September 9, and June 12, 2026, one of which is identified as 10b5-1 sales.

Key Figures

Planned shares to be sold: 50,498 shares Recent sale June 12, 2026: 903 shares; $794,809.13 Recent sale August 7, 2026 (10b5-1): 22,211 shares; $17,834,091.46 +2 more

5 metrics

Planned shares to be sold 50,498 shares Common stock to be sold on September 11, 2026 following stock option exercise

Recent sale June 12, 2026 903 shares; $794,809.13 Sale of Seagate common stock by Gianluca Romano

Recent sale August 7, 2026 (10b5-1) 22,211 shares; $17,834,091.46 Seagate common stock sale marked as 10b5-1 sales

Recent sale August 21, 2026 9,075 shares; $7,707,894.81 Seagate common stock sale by Gianluca Romano

Recent sale September 9, 2026 1,348 shares; $1,194,220.16 Seagate common stock sale by Gianluca Romano

Key Terms

Rule 144, 10b5-1 Sales, Exercise of Stock Options

3 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.

10b5-1 Sales regulatory

"10b5-1 Sales for GIANLUCA ROMANO 121 Woodlands Avenue 5 Singapore"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Exercise of Stock Options financial

"Common | 09/11/2026 | Exercise of Stock Options | Issuer"

FAQ

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

What does the Form 144 filing for STX disclose about Gianluca Romano?

It discloses that officer Gianluca Romano intends to sell 50,498 shares of Seagate common stock on September 11, 2026 after an exercise of stock options, with sales to be handled through Morgan Stanley Smith Barney LLC.

How many STX shares are planned to be sold under this Rule 144 notice?

The notice lists a proposed sale of 50,498 shares of Seagate common stock. The shares are to be sold on September 11, 2026, with the source of the shares described as an exercise of stock options for cash.

Which broker is involved in the planned STX share sale for Gianluca Romano?

The planned sale of 50,498 Seagate common shares for Gianluca Romano is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, New York.

What recent STX share sales by Gianluca Romano are listed in the Form 144?

The filing lists prior sales of Seagate common stock: 903 shares on June 12, 2026; 22,211 shares on August 7, 2026 (marked as 10b5-1 sales); 9,075 shares on August 21, 2026; and 1,348 shares on September 9, 2026.

What dollar amounts are associated with Romano’s recent STX share sales?

Reported total amounts are $794,809.13 on June 12, 2026 (903 shares), $17,834,091.46 on August 7, 2026 (22,211 shares), $7,707,894.81 on August 21, 2026 (9,075 shares), and $1,194,220.16 on September 9, 2026 (1,348 shares).

Does the STX Form 144 mention a 10b5-1 trading plan?

Yes. The filing identifies “10b5-1 Sales” for Gianluca Romano in connection with the sale of 22,211 shares of Seagate common stock on August 7, 2026, with total reported sale proceeds of $17,834,091.46.

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

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Available on EDGAR 09/11/2026 - 04:33 PM Accepted by SEC EDGAR 09/11/2026 - 04:32 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	0001764650
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 HLDNGS PLC
SEC File Number	001-31560
Address of Issuer	121 Woodlands Avenue 5 Singapore SINGAPORE 739009
Phone	6560182562
Name of Person for Whose Account the Securities are To Be Sold	GIANLUCA ROMANO
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	50498	43545940.34	226644518	09/11/2026	NASDAQ

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	09/11/2026	Exercise of Stock Options	Issuer			50498	09/11/2026	Cash

* 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
GIANLUCA ROMANO 121 Woodlands Avenue 5 Singapore U0 739009	Common	09/09/2026	1348	1194220.16
GIANLUCA ROMANO 121 Woodlands Avenue 5 Singapore U0 739009	Common	08/21/2026	9075	7707894.81
10b5-1 Sales for GIANLUCA ROMANO 121 Woodlands Avenue 5 Singapore U0 739009	Common	08/07/2026	22211	17834091.46
GIANLUCA ROMANO 121 Woodlands Avenue 5 Singapore U0 739009	Common	06/12/2026	903	794809.13

144: Remarks and Signature

Remarks
Date of Notice	09/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	04/30/2026
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/ Gianluca Paolo Romano
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)