SEC Form 4 · accession 0001973239-26-000133
ARM HOLDINGS PLC /UK · ARM
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
William Abbey
Officer — Chief Commercial Officer
Period of report
Sep 14, 2026
Accepted (ET)
Sep 16, 2026 · 5:26 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001973239
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1,F2,F3 | — | Sep 14, 2026 | A | 17,288 | A | — | — | Ordinary Shares | 17,288 | 65,270 | D |
Explanation of responses
- F1Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
- F2This RSU award was granted effective September 14, 2026. 50% will vest on each of August 15, 2028 and August 15, 2029, subject to continued service to Arm Holdings plc.
- F3Ordinary 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.