STX (NASDAQ: STX) holder lines up 22,211-share sale after recent stock disposals

Rhea-AI Filing Summary

STX reports that shareholder Gianluca Romano plans to sell up to 22,211 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services on or after 08/07/2026 on NASDAQ. These shares relate to restricted stock units and performance stock units acquired from the issuer on 12/09/2024.

In the preceding three months, Romano sold 903 shares on 06/12/2026 for 794,809.13 and 1,350 shares on 06/10/2026 for 1,109,369.49. The common stock had 226,644,518 shares outstanding, with the proposed sale valued at 18,944,872.45 based on the referenced market price.

Key Figures

Shares to be sold: 22,211 shares Aggregate market value of planned sale: 18,944,872.45 Shares outstanding: 226,644,518 shares +3 more

6 metrics

Shares to be sold 22,211 shares Planned sale of common stock on or after 08/07/2026

Aggregate market value of planned sale 18,944,872.45 Value referenced for 22,211 shares of common stock

Shares outstanding 226,644,518 shares Common stock outstanding at time of planned sale

Past sale 1 903 shares for 794,809.13 Common shares sold on 06/12/2026

Past sale 2 1,350 shares for 1,109,369.49 Common shares sold on 06/10/2026

Acquisition date of RSUs/PSUs 12/09/2024 Date restricted stock units and performance stock units were acquired from issuer

Key Terms

restricted stock units, performance stock units, Form 144, common stock

4 terms

restricted stock units financial

"Restricted stock units and performance stock units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

performance stock units financial

"Restricted stock units and performance stock units | Issuer"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Form 144 regulatory

"144: Securities Information Common | Morgan Stanley Smith Barney LLC"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

common stock financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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

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Available on EDGAR 08/07/2026 - 04:40 PM Accepted by SEC EDGAR 08/07/2026 - 04:39 PM Learn about SEC filing dates

FAQ

How many STX shares are planned for sale under this Form 144?

The shareholder plans to sell up to 22,211 shares of STX common stock. The planned sale is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services on or after 08/07/2026 on NASDAQ.

What is the approximate market value of the STX shares to be sold?

The proposed sale of 22,211 shares of STX common stock is valued at about 18,944,872.45. This figure reflects the aggregate market value referenced for the planned transaction on NASDAQ.

How many STX shares were outstanding at the time of this planned sale?

STX common stock had 226,644,518 shares outstanding. This outstanding share count provides context for the relative size of the proposed 22,211-share sale disclosed by the shareholder.

What prior STX share sales did Gianluca Romano report in the last 3 months?

Gianluca Romano reported selling 903 shares on 06/12/2026 for 794,809.13 and 1,350 shares on 06/10/2026 for 1,109,369.49. These transactions occurred within the three months preceding the planned Form 144 sale.

What is the source of the STX shares being sold by Gianluca Romano?

The 22,211 shares planned for sale are tied to restricted stock units and performance stock units acquired from the issuer on 12/09/2024. The acquisition source is identified as the issuer.

Through which broker will the planned STX share sale be executed?

The planned sale of 22,211 STX shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, 8th Floor, New York, NY 10004, with trading on NASDAQ.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	22211	18944872.45	226644518	08/07/2026	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	12/09/2024	Restricted stock units and performance stock units	Issuer			22211	12/09/2024	N/A

* 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	06/12/2026	903	794809.13
GIANLUCA ROMANO 121 Woodlands Avenue 5 Singapore U0 739009	Common	06/10/2026	1350	1109369.49

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)