Arm director granted 1,531 RSUs

DYKSTRA KAREN E reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 05/19/2026 - 04:57 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

DYKSTRA KAREN E reported acquisition or exercise transactions in this Form 4 filing.

ARM Holdings plc director Karen E. Dykstra received a grant of 1,531 restricted stock units (RSUs). Each RSU represents one Ordinary Share held in the form of an American Depositary Share (ADS). After this award, she holds a total of 5,802 RSUs.

The RSUs will vest in full on May 15, 2027, subject to her continued service on the Board. Although vesting occurs in 2027, delivery of the corresponding ADSs will be deferred until the date her Board service ends, reflecting her election to defer receipt.

Insider Trade Summary

Grant/Award: 1,531 shares

Grant/Award 1 txn

Insider DYKSTRA KAREN E

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	1,531	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 5,802 contracts (Direct)

Footnotes (3)

1. F1. Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
2. F2. The RSUs will vest in full on May 15, 2027, subject to continued service to Arm Holdings plc, but the ADSs will not be delivered until the date of termination of Ms. Dykstra's service on the Board of Directors pursuant to her election to defer such delivery.
3. F3. 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.

Key Figures

RSUs granted: 1,531 units Total RSUs after grant: 5,802 units RSU vesting date: May 15, 2027 +3 more

6 metrics

RSUs granted 1,531 units Restricted Stock Units granted on May 15, 2026

Total RSUs after grant 5,802 units Holdings following the reported transaction

RSU vesting date May 15, 2027 Vest in full subject to continued Board service

RSU exercise/price per unit $0.00 per unit Grant/award acquisition with no exercise price

ADS to Ordinary Share ratio 1 ADS = 1 Ordinary Share Structure of ARM Ordinary Shares held as ADSs

Ordinary Share nominal value 0.001 GBP per share Nominal value of ARM Ordinary Shares

Key Terms

Restricted Stock Units, American Depositary Shares, vesting, defer such delivery, +1 more

5 terms

Restricted Stock Units financial

"Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share..."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

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.

vesting financial

"The RSUs will vest in full on May 15, 2027, subject to continued service to Arm Holdings plc..."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

defer such delivery financial

"ADSs will not be delivered until the date of termination of Ms. Dykstra's service... pursuant to her election to defer such delivery."

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.

FAQ

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

What insider transaction did ARM (ARM) report for Karen E. Dykstra?

ARM reported that director Karen E. Dykstra received a grant of 1,531 restricted stock units. These RSUs are a form of equity compensation and increase her total RSU holdings to 5,802 units linked to ARM Ordinary Shares held as ADSs.

When do Karen Dykstra’s new ARM (ARM) RSUs vest?

Karen Dykstra’s 1,531 restricted stock units will vest in full on May 15, 2027. Vesting is conditioned on her continued service on ARM Holdings plc’s Board of Directors through that date, aligning the award with ongoing board tenure.

How many restricted stock units does Karen Dykstra hold in ARM (ARM) after this Form 4?

After this award, Karen Dykstra holds a total of 5,802 restricted stock units. Each RSU corresponds to one Ordinary Share of ARM Holdings plc, which is held in the form of an American Depositary Share representing the underlying equity.

What does each ARM (ARM) RSU granted to Karen Dykstra represent?

Each restricted stock unit granted to Karen Dykstra represents the right to receive one Ordinary Share held as an American Depositary Share. Delivery of these ADSs will occur after vesting and only upon termination of her Board service, reflecting a deferred settlement structure.

When will Karen Dykstra receive the ARM (ARM) ADSs underlying her RSUs?

Although the RSUs vest on May 15, 2027, Karen Dykstra will not receive the underlying ADSs until her service on the Board ends. This timing follows her election to defer delivery, delaying actual share receipt beyond the vesting date.

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

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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^*

DYKSTRA KAREN E

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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

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
Restricted Stock Units	(1)	05/15/2026		A		1,531		(2)	(2)	Ordinary Shares(3)	1,531	$0	5,802	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.

2. The RSUs will vest in full on May 15, 2027, subject to continued service to Arm Holdings plc, but the ADSs will not be delivered until the date of termination of Ms. Dykstra's service on the Board of Directors pursuant to her election to defer such delivery.

3. 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 Karen E. Dykstra	05/19/2026
	** 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)