Form 4 for ARM ARM HOLDINGS PLC /UK
Accepted 2026-05-19 17:23:22 ET · period of report 2026-04-23 · accession 0001973239-26-000078 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-05-19 17:23 | 2026-05-15 | ARM | Abbey William | Chief Commercial Off | A - Grant | — | +23.3K | 75.0K | +45% | — |
| DMT | 2026-05-19 17:23 | 2026-05-15 | ARM | Abbey William | Chief Commercial Off | M - OptEx | — | +8,200 | 79.7K | +11% | — |
| DT | 2026-05-19 17:23 | 2026-05-15 | ARM | Abbey William | Chief Commercial Off | F - Tax | $209.16 | -15.3K | 64.4K | -19% | -$3.20M |
| DMT | 2026-05-19 17:23 | 2026-04-23+ | ARM | Abbey William | Chief Commercial Off | S - Sale+OE | $211.91 | -10.2K | 54.2K | -16% | -$2.15M |
| DT | 2026-05-19 17:23 | 2026-05-15 | ARM | Abbey William | Chief Commercial Off | A - Grant | $0.00 | +5,566 | 56.2K | +11% | $0 |
| DMT | 2026-05-19 17:23 | 2026-05-15 | ARM | Abbey William | Chief Commercial Off | M - OptEx | $0.00 | -8,200 | 48.0K | -15% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Ordinary Shares | 2026-05-15 | A | A | 4,466 | — | 52,667 | D | — | — | (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 performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the Company. (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. |
| 2 | Common | Ordinary Shares | 2026-05-15 | M | A | 1,751 | — | 54,418 | D | — | — | (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. (F4) This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company. (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. |
| 3 | Common | Ordinary Shares | 2026-05-15 | A | A | 4,444 | — | 58,862 | D | — | — | (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. (F5) Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee. (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. |
| 4 | Common | Ordinary Shares | 2026-05-15 | M | A | 1,743 | — | 60,605 | D | — | — | (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. (F6) This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company. (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. |
| 5 | Common | Ordinary Shares | 2026-05-15 | A | A | 14,400 | — | 75,005 | D | — | — | (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. (F7) Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee. (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. |
| 6 | Common | Ordinary Shares | 2026-05-15 | M | A | 4,706 | — | 79,711 | D | — | — | (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. (F8) This RSU award was granted on May 23, 2023 and vested on May 15, 2026. (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. |
| 7 | Common | Ordinary Shares | 2026-05-15 | F | D | 15,317 | $209.16 | 64,394 | D | — | — | (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. (F9) Ordinary Shares withheld to satisfy tax withholding requirements on vesting of RSUs. |
| 8 | Common | Ordinary Shares | 2026-05-15 | S | D | 7,000 | $212.55 | 57,394 | D | — | — | (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. (F10) Represents weighted average sales price. The shares were sold at prices ranging from $212.51 to $212.76. 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. |
| 9 | Common | Ordinary Shares | 2026-04-24 | S | D | 1,577 | $221.99 | 55,817 | D | — | — | (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. (F11) The Reporting Person is hereby disclosing delinquent transactions reportable on Form 4 that were not reported due to an inadvertent oversight. These shares were sold pursuant to a 10b5-1 trading plan. |
| 10 | Common | Ordinary Shares | 2026-04-23 | S | D | 1,577 | $199.00 | 54,240 | D | — | — | (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. (F11) The Reporting Person is hereby disclosing delinquent transactions reportable on Form 4 that were not reported due to an inadvertent oversight. These shares were sold pursuant to a 10b5-1 trading plan. |
| 11 | Derivative | Restricted Stock Units | 2026-05-15 | A | A | 5,566 | $0.00 | 56,182 | D | — · — to — | 5,566 Ordinary Shares | (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. (F12) This RSU award was granted effective May 15, 2026. 30% will vest on each of May 15, 2027, and May 15, 2028, and the remaining 40% will vest on May 15, 2029, subject to continued service to the Company. (F12) This RSU award was granted effective May 15, 2026. 30% will vest on each of May 15, 2027, and May 15, 2028, and the remaining 40% will vest on May 15, 2029, subject to continued service to the Company. |
| 12 | Derivative | Restricted Stock Units | 2026-05-15 | M | D | 1,751 | $0.00 | 54,431 | D | — · — to — | 1,751 Ordinary Shares | (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. (F4) This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company. (F4) This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company. |
| 13 | Derivative | Restricted Stock Units | 2026-05-15 | M | D | 1,743 | $0.00 | 52,688 | D | — · — to — | 1,743 Ordinary Shares | (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. (F6) This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company. (F6) This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company. |
| 14 | Derivative | Restricted Stock Units | 2026-05-15 | M | D | 4,706 | $0.00 | 47,982 | D | — · — to — | 4,706 Ordinary Shares | (F3) Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS. (F8) This RSU award was granted on May 23, 2023 and vested on May 15, 2026. (F8) This RSU award was granted on May 23, 2023 and vested on May 15, 2026. |