ARM legal chief sells 51,961 shares in open trade

ARM Holdings plc Chief Legal Officer Spencer Collins sold Ordinary Shares held as American Depositary Shares in a series of open-market transactions.

Accepted by SEC EDGAR 05/13/2026 - 04:56 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ARM Holdings plc Chief Legal Officer Spencer Collins sold Ordinary Shares held as American Depositary Shares in a series of open-market transactions. On May 11, 2026, he sold a total of 51,961 Ordinary Shares across eight trades at reported prices such as $214.41, $213.59, $212.51, $211.46, $210.53, $209.52, $208.68 and $207.77 per share. Footnotes explain these are weighted average prices, with actual sale prices ranging from $207.01 to $214.94. Following these sales, Collins reported holding 0 Ordinary Shares directly.

Insider Trade Summary

Net Seller: 51,961 shares

Net Sell 8 txns

Insider Collins Spencer

Role Chief Legal Officer

Sold 51,961 shs ($11.00M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	836	$207.77	$174K
Sale	Ordinary Shares	1,849	$208.68	$386K
Sale	Ordinary Shares	5,353	$209.52	$1.12M
Sale	Ordinary Shares	9,815	$210.53	$2.07M
Sale	Ordinary Shares	10,674	$211.46	$2.26M
Sale	Ordinary Shares	11,197	$212.51	$2.38M
Sale	Ordinary Shares	7,371	$213.59	$1.57M
Sale	Ordinary Shares	4,866	$214.41	$1.04M

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

Footnotes (9)

1. 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.
2. F2. Represents weighted average sales price. The shares were sold at prices ranging from $207.01 to $207.99. 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. F3. Represents weighted average sales price. The shares were sold at prices ranging from $208.16 to $208.99. 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.
4. F4. Represents weighted average sales price. The shares were sold at prices ranging from $209.00 to $209.95. 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.
5. F5. Represents weighted average sales price. The shares were sold at prices ranging from $210.00 to $210.99. 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.
6. F6. Represents weighted average sales price. The shares were sold at prices ranging from $211.00 to $211.99. 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.
7. F7. Represents weighted average sales price. The shares were sold at prices ranging from $212.00 to $212.99. 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.
8. F8. Represents weighted average sales price. The shares were sold at prices ranging from $213.00 to $213.99. 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.
9. F9. Represents weighted average sales price. The shares were sold at prices ranging from $214.00 to $214.94. 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

Total shares sold: 51,961 shares Highest reported trade price: $214.41 per share Lowest weighted-price range bound: $207.01 per share +3 more

6 metrics

Total shares sold 51,961 shares Net open-market sales on May 11, 2026

Highest reported trade price $214.41 per share One of eight sale tranches on May 11, 2026

Lowest weighted-price range bound $207.01 per share Lower end of disclosed price ranges in footnotes

Highest weighted-price range bound $214.94 per share Upper end of disclosed price ranges in footnotes

Transactions count 8 sale transactions Non-derivative Ordinary Share sales on May 11, 2026

Direct holdings after transactions 0 shares Total Ordinary Shares held directly after sales

Key Terms

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

4 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.

weighted average sales price financial

"Represents weighted average sales price. The shares were sold at prices ranging..."

open-market sale financial

"transaction_action": "open-market sale""

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.

Ordinary Shares financial

"Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held..."

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.

FAQ

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

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

ARM reported that Chief Legal Officer Spencer Collins executed open-market sales of 51,961 Ordinary Shares on May 11, 2026. The trades were in multiple tranches at various prices, and his reported direct Ordinary Share holdings fell to zero afterward.

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

Spencer Collins sold 51,961 Ordinary Shares of ARM in eight separate open-market transactions. Reported prices per share included $214.41, $213.59, $212.51, $211.46, $210.53, $209.52, $208.68 and $207.77, with weighted average sale prices across each tranche.

What were the trading price ranges in Spencer Collins’ ARM (ARM) share sales?

Footnotes state the weighted average prices reflect individual trades within specified ranges. For Collins’ May 11, 2026 sales, those underlying prices ranged from $207.01 to $214.94 per share, with detailed breakdowns available to regulators, the issuer, or shareholders upon request.

How many ARM (ARM) shares does Spencer Collins own after these transactions?

After the reported May 11, 2026 open-market sales totaling 51,961 Ordinary Shares, the Form 4 shows Spencer Collins with 0 Ordinary Shares held directly. The filing’s transaction entries each list the resulting direct holdings, with the final line indicating no remaining direct shares.

How are ARM (ARM) Ordinary Shares held by Spencer Collins structured?

The filing explains that ARM Ordinary Shares with a nominal value of 0.001 GBP are held in the form of American Depositary Shares. Each ADS represents one Ordinary Share, so the reported transactions and holdings directly correspond to an equal number of underlying Ordinary Shares.

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

Form 4 Insider Transactions: What Each Field Means →

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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)
05/11/2026

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)	05/11/2026		S		836	D	$207.77(2)	51,125	D
Ordinary Shares(1)	05/11/2026		S		1,849	D	$208.68(3)	49,276	D
Ordinary Shares(1)	05/11/2026		S		5,353	D	$209.52(4)	43,923	D
Ordinary Shares(1)	05/11/2026		S		9,815	D	$210.53(5)	34,108	D
Ordinary Shares(1)	05/11/2026		S		10,674	D	$211.46(6)	23,434	D
Ordinary Shares(1)	05/11/2026		S		11,197	D	$212.51(7)	12,237	D
Ordinary Shares(1)	05/11/2026		S		7,371	D	$213.59(8)	4,866	D
Ordinary Shares(1)	05/11/2026		S		4,866	D	$214.41(9)	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.

2. Represents weighted average sales price. The shares were sold at prices ranging from $207.01 to $207.99. 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 $208.16 to $208.99. 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.

4. Represents weighted average sales price. The shares were sold at prices ranging from $209.00 to $209.95. 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.

5. Represents weighted average sales price. The shares were sold at prices ranging from $210.00 to $210.99. 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.

6. Represents weighted average sales price. The shares were sold at prices ranging from $211.00 to $211.99. 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.

7. Represents weighted average sales price. The shares were sold at prices ranging from $212.00 to $212.99. 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.

8. Represents weighted average sales price. The shares were sold at prices ranging from $213.00 to $213.99. 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.

9. Represents weighted average sales price. The shares were sold at prices ranging from $214.00 to $214.94. 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 Spencer Collins	05/13/2026
	** 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)