ARM Form 144: Rene Haas proposes sale of ADS

Rene Haas reported proposed sales of American Depositary Shares.

Accepted by SEC EDGAR 03/26/2026 - 04:13 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Rene Haas reported proposed sales of American Depositary Shares. The Form 144 lists the security as American Depositary Shares and notes a Restricted Stock Vesting of 7,986 ADS on 05/15/2024. The filing also discloses securities sold during the past three months: 6,152 ADS on 12/31/2025, 6,152 ADS on 01/30/2026, 6,152 ADS on 02/27/2026, and 23,867 ADS on 03/25/2026. The transactions are denominated in ADS and list dollar amounts alongside each sale.

FAQ

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

What does ARM's Form 144 filed by Rene Haas show?

It reports proposed sales of American Depositary Shares by Rene Haas. The filing lists a vested grant of 7,986 ADS on 05/15/2024 and four reported sales of 6,152, 6,152, 6,152, and 23,867 ADS dated 12/31/2025, 01/30/2026, 02/27/2026, and 03/25/2026.

Who is the reporting person on the ARM Form 144?

The filing identifies Rene Haas as the reporting person. His address is shown as 110 Fulbourn Road, Cambridge. The transactions pertain to American Depositary Shares listed on NASDAQ and include dollar values reported alongside each ADS sale.

What recent ADS sale quantities are disclosed in the filing for ARM?

The Form 144 lists four recent ADS sale quantities. Those are 6,152 ADS on 12/31/2025, 6,152 ADS on 01/30/2026, 6,152 ADS on 02/27/2026, and 23,867 ADS on 03/25/2026, each with associated dollar figures shown in the filing.

Does the filing show any vested restricted stock for ARM insiders?

Yes — the filing records a Restricted Stock Vesting event. It shows 7,986 American Depositary Shares vested on 05/15/2024 under a compensation description, with the issuer listed as the source of those vested shares.

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

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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	0001998912
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	ARM HOLDINGS PLC /UK
SEC File Number	001-41800
Address of Issuer	110 FULBOURN ROAD CAMBRIDGE UNITED KINGDOM CB1 9NJ
Phone	44 1223 400 400
Name of Person for Whose Account the Securities are To Be Sold	Haas Rene A.
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
Relationship to Issuer	Director

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
American Depositary Shares	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	7986	1284620.75	1056513738	03/26/2026	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 *
American Depositary Shares	05/15/2024	Restricted Stock Vesting	Issuer			7986	05/15/2024	Compensation

* 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
Rene Haas 110 Fulbourn Road Cambridge X0 CB1 9NJ	American Depositary Shares	12/31/2025	6152	678956.89
Rene Haas 110 Fulbourn Road Cambridge X0 CB1 9NJ	American Depositary Shares	01/30/2026	6152	653938.87
Rene Haas 110 Fulbourn Road Cambridge X0 CB1 9NJ	American Depositary Shares	02/27/2026	6152	776044.04
Rene Haas 110 Fulbourn Road Cambridge X0 CB1 9NJ	American Depositary Shares	03/25/2026	23867	3846744.35

144: Remarks and Signature

Remarks
Date of Notice	03/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/11/2025
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/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Rene Haas
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)