Arm Holdings (ARM) CLO sells 40,941 ADS-equivalent Ordinary Shares

Rhea-AI Filing Summary

ARM Holdings PLC Chief Legal Officer Spencer Collins sold 40,941 Ordinary Shares in an open-market transaction. The sale occurred at a price of $215.00 per share and reduced his directly held Ordinary Shares, which are represented by American Depositary Shares on a 1-to-1 basis, to zero following the transaction.

Insider Trade Summary

Net Seller: 40,941 shares ($8,802,315)

Net Sell 1 txn

Insider Collins Spencer

Role Chief Legal Officer

Sold 40,941 shs ($8.80M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	40,941	$215.00	$8.80M

Holdings After Transaction: Ordinary Shares — 0 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 40,941 shares Sale price: $215.00 per share Shares after transaction: 0 shares +2 more

5 metrics

Shares sold 40,941 shares Ordinary Shares sold in open-market transaction

Sale price $215.00 per share Price for Ordinary Shares sold

Shares after transaction 0 shares Total Ordinary Shares directly held after sale

ADS to Ordinary Share ratio 1 ADS = 1 Ordinary Share Representation of Ordinary Shares via American Depositary Shares

Security title Ordinary Shares Nominal value 0.001 GBP per share

Key Terms

American Depositary Shares, Ordinary Shares, open-market sale

3 terms

American Depositary Shares financial

"Ordinary shares ... are held in the form of American Depositary Shares ("ADSs")."

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

Ordinary Shares financial

"Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares."

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

open-market sale financial

"transaction_action: "open-market sale" with transaction code "S" for the Ordinary Shares."

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Collins Spencer

(Last) (First) (Middle)

C/O ARM HOLDINGS PLC

110 FULBOURN ROAD

(Street)

CAMBRIDGE CB1 9NJ

(City) (State) (Zip)

UNITED KINGDOM

(Country)

2. Issuer Name and Ticker or Trading Symbol
ARM HOLDINGS PLC /UK [ ARM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares(1)	05/19/2026		S		40,941	D	$215	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.

Remarks:

	/s/ George Kanelos, as Attorney-in-Fact for Spencer Collins	05/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did ARM (ARM) report for Spencer Collins?

ARM reported that Chief Legal Officer Spencer Collins sold 40,941 Ordinary Shares in an open-market transaction. The sale was reported on a Form 4 insider filing and involved shares represented by American Depositary Shares.

How many ARM (ARM) shares did Spencer Collins sell and at what price?

Spencer Collins sold 40,941 Ordinary Shares of ARM at $215.00 per share. These Ordinary Shares are held in the form of American Depositary Shares, with each ADS representing one Ordinary Share.

What are Spencer Collins’ ARM (ARM) holdings after this Form 4 sale?

Following the reported transaction, Spencer Collins held 0 Ordinary Shares of ARM directly. The Form 4 shows total shares following the transaction as 0, indicating no remaining directly owned Ordinary Shares.

How are ARM (ARM) Ordinary Shares represented in U.S. markets?

ARM’s Ordinary Shares are held in the form of American Depositary Shares. Each ADS represents one Ordinary Share with a nominal value of 0.001 GBP per share, according to the footnote in the Form 4 filing.

Was the ARM (ARM) insider transaction an open-market sale or another type?

The transaction was an open-market sale of Ordinary Shares. The Form 4 describes it with transaction code “S” and labels it as a sale in an open market or private transaction, rather than a grant, gift, or tax-withholding event.