Planned sale of 20,000 STX shares filed for Mosley (NASDAQ: STX)

Rhea-AI Filing Summary

A holder of STX common stock has filed a notice of intent to sell 20,000 shares through Morgan Stanley Smith Barney LLC Executive Financial Services on the NASDAQ, with an aggregate market value of 8153800.00. The shares relate to common stock of the issuer with 218,073,067 shares outstanding. These 20,000 shares were acquired on 09/09/2015 as restricted and performance stock units from the issuer.

The filing also lists prior sales over the past three months for the account of a seller identified as MOSLEY at an address in Singapore. Those past sales include three blocks of 20,000 common shares each, sold on 11/03/2025, 12/01/2025, and 01/02/2026, with gross proceeds of 5256462.00, 5420578.00, and 5711244.00, respectively. The seller represents that they are not aware of undisclosed material adverse information about the issuer.

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

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	20000	8153800.00	218073067	02/02/2026	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	09/09/2015	Restricted and Performance Stock Units	Issuer			20000	09/09/2015	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
10b5-1 Sales for WILLIAM MOSLEY 121 Woodlands Avenue 5 Singapore U0 739009	Common	01/02/2026	20000	5711244.00
10b5-1 Sales for WILLIAM MOSLEY 121 Woodlands Avenue 5 Singapore U0 739009	Common	12/01/2025	20000	5420578.00
10b5-1 Sales for WILLIAM MOSLEY 121 Woodlands Avenue 5 Singapore U0 739009	Common	11/03/2025	20000	5256462.00

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)

FAQ

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

The filing discloses an intended sale of 20,000 STX common shares on NASDAQ through Morgan Stanley Smith Barney LLC, with an aggregate market value of 8153800.00, relating to an issuer that has 218,073,067 shares outstanding.

How and when were the 20,000 STX shares in this Form 144 originally acquired?

The 20,000 shares were acquired on 09/09/2015 as restricted and performance stock units from the issuer. The filing shows 20,000 securities acquired on that date, with the acquisition described as “Restricted and Performance Stock Units,” and payment noted as “N/A.”

What prior STX share sales are reported in the past three months for MOSLEY?

The document lists three prior sales for MOSLEY: 20,000 common shares on 11/03/2025 for 5256462.00, 20,000 shares on 12/01/2025 for 5420578.00, and 20,000 shares on 01/02/2026 for 5711244.00, all labeled as “10b5-1 Sales.”

Which broker and exchange are used for the planned STX share sale in this Form 144?

The planned sale will use Morgan Stanley Smith Barney LLC Executive Financial Services as broker, located at 1 New York Plaza, 8th Floor, New York, NY 10004. The filing states that the 20,000 common shares are expected to be sold on the NASDAQ exchange.

What representation does the seller make about information on the STX issuer?

The seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed. This representation is made in connection with signing the notice for the planned sale of the securities.