ARM HOLDINGS PLC /UK SEC Filing

ARM filed a Form 144 reporting the proposed sale of American Depositary Shares by Jason E. Child.

Accepted by SEC EDGAR 03/25/2026 - 10:21 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ARM filed a Form 144 reporting the proposed sale of American Depositary Shares by Jason E. Child. The filing shows a sale of 10,640 ADS for $1,365,005.60 on 02/18/2026. The notice also lists earlier restricted stock vesting entries dated 05/15/2024, 08/15/2024, 11/15/2024, and 02/15/2025 with respective ADS counts of 4,845, 5,795, 1,429, and 9,211.

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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	0001533913
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	Child Jason
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
American Depositary Shares	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	21280	3157313.60	1056513738	03/25/2026	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			4845	05/15/2024	Compensation
American Depositary Shares	08/15/2024	Restricted Stock Vesting	Issuer			5795	08/15/2024	Compensation
American Depositary Shares	11/15/2024	Restricted Stock Vesting	Issuer			1429	11/15/2024	Compensation
American Depositary Shares	02/15/2025	Restricted Stock Vesting	Issuer			9211	02/15/2025	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
Jason E. Child 110 Fulbourn Road Cambridge X0 CB1 9NJ	American Depositary Shares	02/18/2026	10640	1365005.60

144: Remarks and Signature

Remarks
Date of Notice	03/25/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/30/2025
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/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jason E. Child
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)