Arm CCO sells 15,956 shares in two trades

ARM Holdings plc Chief Commercial Officer William Abbey reported open-market sales of company stock.

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Form Type

Rhea-AI Filing Summary

ARM Holdings plc Chief Commercial Officer William Abbey reported open-market sales of company stock. On May 19, 2026, he sold 10,887 Ordinary Shares, which are held as American Depositary Shares, at a weighted average price of $224.14 per share.

On May 20, 2026, he sold an additional 5,069 Ordinary Shares at a weighted average price of $257.18 per share, for total reported sales of 15,956 shares. After these transactions, Abbey directly holds 38,284 Ordinary Shares.

Insider Trade Summary

Net Seller: 15,956 shares

Net Sell 2 txns

Insider Abbey William

Role Chief Commercial Officer

Sold 15,956 shs ($3.74M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	5,069	$257.18	$1.30M
Sale	Ordinary Shares	10,887	$224.14	$2.44M

Holdings After Transaction: Ordinary Shares — 38,284 shares (Direct)

Footnotes (3)

F1. 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.
F2. Represents weighted average sales price. The shares were sold at prices ranging from $224.11 to $224.43. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F3. Represents weighted average sales price. The shares were sold at prices ranging from $257.15 to $257.35. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Key Figures

Shares sold May 19, 2026: 10,887 shares Shares sold May 20, 2026: 5,069 shares Total shares sold: 15,956 shares +1 more

4 metrics

Shares sold May 19, 2026 10,887 shares Open-market sale of Ordinary Shares at weighted average $224.14

Shares sold May 20, 2026 5,069 shares Open-market sale of Ordinary Shares at weighted average $257.18

Total shares sold 15,956 shares Aggregate of two open-market sales reported in this filing

Shares held after transactions 38,284 shares Direct ownership of Ordinary Shares following sales

Key Terms

Ordinary Shares, American Depositary Shares, weighted average sales price, open-market sale

4 terms

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.

American Depositary Shares financial

"Ordinary Shares are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share."

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.

weighted average sales price financial

"Represents weighted average sales price. The shares were sold at prices ranging from $224.11 to $224.43."

open-market sale financial

"transaction_action is described as an open-market sale of 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.

FAQ

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

What insider transaction did ARM (ARM) report for William Abbey?

ARM disclosed that Chief Commercial Officer William Abbey executed two open-market sales of Ordinary Shares. He sold 10,887 shares on May 19, 2026, and 5,069 shares on May 20, 2026, for total reported sales of 15,956 shares.

At what prices did William Abbey sell ARM (ARM) shares?

William Abbey’s sales used weighted average prices. On May 19, 2026, shares were sold around $224.14, within a $224.11–$224.43 range. On May 20, 2026, shares were sold around $257.18, within a $257.15–$257.35 range.

How many ARM (ARM) shares does William Abbey hold after these sales?

Following the reported transactions, William Abbey directly holds 38,284 Ordinary Shares of ARM. These shares are held in the form of American Depositary Shares, with each ADS representing one Ordinary Share according to the filing footnotes.

What type of security did William Abbey trade in ARM (ARM)?

The transactions involved ARM Ordinary Shares, with a nominal value of 0.001 GBP per share. The filing notes these are held as American Depositary Shares, and each ADS corresponds to one Ordinary Share, simplifying the share-count comparison for investors.

Were William Abbey’s ARM (ARM) transactions open-market sales?

Yes. The filing labels both transactions with code “S” and describes them as open-market or private sales. This indicates discretionary sales of existing Ordinary Shares, not exercises of options or other derivative-related activity, and no derivative holdings are listed afterward.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/21/2026 - 04:15 PM

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^*

Abbey William

(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 Commercial 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares⁽¹⁾	05/19/2026		S		10,887	D	$224.14⁽²⁾	43,353	D
Ordinary Shares⁽¹⁾	05/20/2026		S		5,069	D	$257.18⁽³⁾	38,284	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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.

2. Represents weighted average sales price. The shares were sold at prices ranging from $224.11 to $224.43. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

3. Represents weighted average sales price. The shares were sold at prices ranging from $257.15 to $257.35. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Remarks:

	/s/ George Kanelos, as Attorney-in-Fact for William Abbey	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)

Source: View Original Filing on SEC EDGAR