=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-05-15
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: ARM HOLDINGS PLC /UK (ARM)
CIK: 0001973239
--- Reporting Owner ---
Name: Sine Jeffrey
CIK: 0001886826
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Ordinary Shares
Date: 2026-05-15 | Code: M (Exercise of derivative)
Shares: +2,141
Shares Owned After: 9,572 | Ownership: D (Direct)
Footnotes:
[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] The restricted stock units ("RSUs") vested in full on May 15, 2026.
[F3] Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
--- Derivative Transactions ---
[Transaction #1]
Security: Restricted Stock Units
Date: 2026-05-15 | Code: M (Exercise of derivative)
Shares: -2,141 | Price: $0.00
Shares Owned After: 0 | Ownership: D (Direct)
Footnotes:
[F3] Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
[F2] The restricted stock units ("RSUs") vested in full on May 15, 2026.
[F2] The restricted stock units ("RSUs") vested in full on May 15, 2026.
[Transaction #2]
Security: Restricted Stock Units
Date: 2026-05-15 | Code: A (Grant or award)
Shares: +1,531 | Price: $0.00
Shares Owned After: 1,531 | Ownership: D (Direct)
Footnotes:
[F3] Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
[F4] The RSUs will vest in full on May 15, 2027, subject to continued service to Arm Holdings plc.
[F4] The RSUs will vest in full on May 15, 2027, subject to continued service to Arm Holdings plc.
--- Footnotes (Complete Index) ---
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: The restricted stock units ("RSUs") vested in full on May 15, 2026.
F3: Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
F4: The RSUs will vest in full on May 15, 2027, subject to continued service to Arm Holdings plc.
--- Signature ---
/s/ /s/ George Kanelos, as Attorney-in-Fact for Jeffrey Sine (2026-05-19)
