SEC Form 4 · accession 0001973239-26-000121
ARM HOLDINGS PLC /UK · ARM
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Laura Kathleen Bartels
Officer — Chief Accounting Officer
Period of report
Aug 17, 2026
Accepted (ET)
Aug 18, 2026 · 5:31 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001973239
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary SharesF1,F2,F3 | Aug 17, 2026 | M | 862 | — | A | 12,997 | D | |
| Ordinary SharesF1,F4,F3 | Aug 17, 2026 | M | 819 | — | A | 13,816 | D | |
| Ordinary SharesF1 | Aug 17, 2026 | F | 856 | $271.43 | D | 12,960 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF3,F2 | — | Aug 17, 2026 | M | 862 | D | — | — | Ordinary Shares | 862 | 100,390 | D |
| Restricted Stock UnitsF3,F4 | — | Aug 17, 2026 | M | 819 | D | — | — | Ordinary Shares | 819 | 99,571 | D |
Explanation of responses
- F1Ordinary 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.
- F2This restricted stock unit ("RSU") award was granted on May 13, 2024, 28.5% of which vested on May 15, 2025, with quarterly vesting of 6.5% thereafter, subject to continued service to the Company.
- F3Each RSU represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
- F4This RSU award was granted on May 1, 2025, 28.5% of which vested on May 15, 2026, with quarterly vesting of 6.5% thereafter, subject to continued service to the Company.
- F5Ordinary Shares withheld to satisfy tax withholding requirements on vesting of RSUs.