ARM HOLDINGS PLC /UK (ARM) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-02 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ARM HOLDINGS PLC /UK (ARM) CIK: 0001973239 --- Reporting Owner --- Name: Bartels Laura Kathleen CIK: 0002114104 Role: Officer (Chief Accounting Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Ordinary Shares Date: 2026-06-02 | Code: S (Open market sale) Shares: -11,306 | Price: $392.70 Total Value: $4,439,866.20 Shares Owned After: 12,135 | 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] Represents weighted average sales price. The shares were sold at prices ranging from $392.60 to $393.09. 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. --- 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: Represents weighted average sales price. The shares were sold at prices ranging from $392.60 to $393.09. 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. --- Signature --- /s/ /s/ George Kanelos, as Attorney-in-Fact for Laura Kathleen Bartels (2026-06-04)