SEC Form 4 · Updated Daily
ARM
— ARM HOLDINGS PLC OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Haas Rene A. | Director · Officer | 338,666 | 2026-08-31 | A |
| Child Jason | Officer | 163,832 | 2026-08-27 | S |
| Abbey William | Director | 20,563 | 2026-06-01 | S |
| Bartels Laura Kathleen | Officer | 12,960 | 2026-08-17 | F |
| Schooler Rosemary | Director | 9,572 | 2026-05-15 | M |
| Eaton Charlotte Claire | Officer | 7,805 | 2026-05-21 | S |
| JACOBS PAUL E | Director | 7,442 | 2026-05-15 | M |
| SOHN YOUNG | Director | 2,396 | 2026-05-15 | F |
| Sine Jeffrey | Director | 0 | 2026-08-07 | G |
| Collins Spencer | Officer | 0 | 2026-05-19 | S |
| Grisenthwaite Richard Roy | Officer | 0 | 2026-05-18 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-14 | Abbey William | Grant / award (derivative) | 17,288 | $0.00 | 65,270 |
| 2026-09-09 | Haas Rene A. | Grant / award (derivative) | 425,000 | $0.00 | 425,000 |
| 2026-08-31 | Haas Rene A. | Grant / award | 64 | $108.33 | 338,666 |
| 2026-08-27 | Child Jason | Open-market sale | 10,400 | $255.33 | 163,832 |
| 2026-08-17 | Bartels Laura Kathleen | Option exercise (derivative) | 819 | $0.00 | 99,571 |
| 2026-08-17 | Bartels Laura Kathleen | Option exercise (derivative) | 862 | $0.00 | 100,390 |
| 2026-08-17 | Bartels Laura Kathleen | Tax withholding | 856 | $271.43 | 12,960 |
| 2026-08-17 | Bartels Laura Kathleen | Option exercise | 819 | — | 13,816 |
| 2026-08-17 | Bartels Laura Kathleen | Option exercise | 862 | — | 12,997 |
| 2026-08-07 | Sine Jeffrey | Gift | 9,572 | $0.00 | 0 |
| 2026-06-02 | Bartels Laura Kathleen | Open-market sale | 11,306 | $392.70 | 12,135 |
| 2026-06-01 | Abbey William | Open-market sale | 3,922 | $415.52 | 20,563 |
| 2026-06-01 | Abbey William | Open-market sale | 2,644 | $383.73 | 24,485 |
| 2026-05-28 | Abbey William | Open-market sale | 4,200 | $343.81 | 27,129 |
| 2026-05-22 | Abbey William | Open-market sale | 2,300 | $305.82 | 31,329 |
| 2026-05-21 | Eaton Charlotte Claire | Open-market sale | 4,000 | $282.77 | 7,805 |
| 2026-05-21 | Eaton Charlotte Claire | Open-market sale | 5,000 | $291.08 | 0 |
| 2026-05-21 | Eaton Charlotte Claire | Open-market sale | 2,805 | $288.10 | 5,000 |
| 2026-05-21 | Abbey William | Open-market sale | 4,655 | $287.03 | 33,629 |
| 2026-05-20 | Eaton Charlotte Claire | Open-market sale | 3,100 | $252.25 | 11,805 |
| 2026-05-20 | Child Jason | Open-market sale | 31,920 | $226.54 | 174,232 |
| 2026-05-20 | Abbey William | Open-market sale | 5,069 | $257.18 | 38,284 |
| 2026-05-19 | Abbey William | Open-market sale | 10,887 | $224.14 | 43,353 |
| 2026-05-19 | Collins Spencer | Open-market sale | 40,941 | $215.00 | 0 |
| 2026-05-18 | Grisenthwaite Richard Roy | Open-market sale | 24,339 | $209.15 | 0 |
| 2026-05-15 | SOHN YOUNG | Grant / award (derivative) | 1,531 | $0.00 | 1,531 |
| 2026-05-15 | SOHN YOUNG | Option exercise (derivative) | 2,141 | $0.00 | 0 |
| 2026-05-15 | SOHN YOUNG | Tax withholding | 429 | $209.16 | 2,396 |
| 2026-05-15 | SOHN YOUNG | Option exercise | 2,141 | — | 2,825 |
| 2026-05-15 | Schooler Rosemary | Grant / award (derivative) | 1,531 | $0.00 | 1,531 |
| 2026-05-15 | Schooler Rosemary | Option exercise (derivative) | 2,141 | $0.00 | 0 |
| 2026-05-15 | Schooler Rosemary | Option exercise | 2,141 | — | 9,572 |
| 2026-05-15 | DYKSTRA KAREN E | Grant / award (derivative) | 1,531 | $0.00 | 5,802 |
| 2026-05-15 | Sine Jeffrey | Grant / award (derivative) | 1,531 | $0.00 | 1,531 |
| 2026-05-15 | Sine Jeffrey | Option exercise (derivative) | 2,141 | $0.00 | 0 |
| 2026-05-15 | Sine Jeffrey | Option exercise | 2,141 | — | 9,572 |
| 2026-05-15 | FISHER RONALD D | Grant / award (derivative) | 1,531 | $0.00 | 5,802 |
| 2026-05-15 | JACOBS PAUL E | Grant / award (derivative) | 1,531 | $0.00 | 1,531 |
| 2026-05-15 | JACOBS PAUL E | Option exercise (derivative) | 2,141 | $0.00 | 0 |
| 2026-05-15 | JACOBS PAUL E | Option exercise | 2,141 | — | 7,442 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.