As of October 03, 2026, the three largest insider holders of ARM are Rene A. Haas (Chief Executive Officer, 338.67K shares), Jason Child (Chief Financial Officer, 153.44K shares), William Abbey (Chief Commercial Officer, 20.56K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Rene A. Haas | Chief Executive Officer | 338,666 | 0 | 338,666 | 62.1% | 10 Sep, 2026 |
| 2 | Jason Child | Chief Financial Officer | 153,442 | 0 | 153,442 | 28.2% | 23 Sep, 2026 |
| 3 | William Abbey | Chief Commercial Officer | 20,563 | 0 | 20,563 | 3.8% | 03 Jun, 2026 |
| 4 | Laura Kathleen Bartels | Chief Accounting Officer | 12,960 | 0 | 12,960 | 2.4% | 18 Aug, 2026 |
| 5 | Rosemary Schooler | Director | 9,572 | 0 | 9,572 | 1.8% | 19 May, 2026 |
| 6 | Paul E Jacobs | Director | 7,442 | 0 | 7,442 | 1.4% | 19 May, 2026 |
| 7 | Young Sohn | Director | 2,396 | 0 | 2,396 | 0.4% | 19 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 21 Sep, 2026 | Jason Child | Chief Financial Officer | Disposed S | 10,400 | $300.00 | $3.12Mn | 153,442 | Direct |
| 31 Aug, 2026 | Rene A. Haas | Chief Executive Officer | Acquired A | 64 | $108.33 | $6.93K | 338,666 | Direct |
| 09 Sep, 2026 | Rene A. Haas | Chief Executive Officer | Acquired A | 425,000 | $0.00 | $0 | 425,000 | Direct |
| 27 Aug, 2026 | Jason Child | Chief Financial Officer | Disposed S | 10,400 | $255.33 | $2.66Mn | 163,832 | Direct |
| 17 Aug, 2026 | Laura Kathleen Bartels | Chief Accounting Officer | Acquired M | 862 | — | — | 12,997 | Direct |
| 17 Aug, 2026 | Laura Kathleen Bartels | Chief Accounting Officer | Acquired M | 819 | — | — | 13,816 | Direct |
| 17 Aug, 2026 | Laura Kathleen Bartels | Chief Accounting Officer | Disposed F | 856 | $271.43 | $232.34K | 12,960 | Direct |
| 17 Aug, 2026 | Laura Kathleen Bartels | Chief Accounting Officer | Disposed M | 862 | $0.00 | $0 | 100,390 | Direct |
| 17 Aug, 2026 | Laura Kathleen Bartels | Chief Accounting Officer | Disposed M | 819 | $0.00 | $0 | 99,571 | Direct |
| 07 Aug, 2026 | Jeffrey Sine | Director | Disposed G | 9,572 | $0.00 | $0 | 0 | Direct |
| 02 Jun, 2026 | Laura Kathleen Bartels | Chief Accounting Officer | Disposed S | 11,306 | $392.70 | $4.44Mn | 12,135 | Direct |
| 01 Jun, 2026 | William Abbey | Chief Commercial Officer | Disposed S | 2,644 | $383.73 | $1.01Mn | 24,485 | Direct |
| 01 Jun, 2026 | William Abbey | Chief Commercial Officer | Disposed S | 3,922 | $415.52 | $1.63Mn | 20,563 | Direct |
| 28 May, 2026 | William Abbey | Chief Commercial Officer | Disposed S | 4,200 | $343.81 | $1.44Mn | 27,129 | Direct |
| 22 May, 2026 | William Abbey | Chief Commercial Officer | Disposed S | 2,300 | $305.82 | $703.39K | 31,329 | Direct |
| 21 May, 2026 | William Abbey | Chief Commercial Officer | Disposed S | 4,655 | $287.03 | $1.34Mn | 33,629 | Direct |
| 21 May, 2026 | Charlotte Claire Eaton | Chief People Officer | Disposed S | 2,805 | $288.10 | $808.12K | 5,000 | Direct |
| 21 May, 2026 | Charlotte Claire Eaton | Chief People Officer | Disposed S | 5,000 | $291.08 | $1.46Mn | 0 | Direct |
| 20 May, 2026 | Jason Child | Chief Financial Officer | Disposed S | 31,920 | $226.54 | $7.23Mn | 174,232 | Direct |
| 19 May, 2026 | Spencer Collins | Chief Legal Officer | Disposed S | 40,941 | $215.00 | $8.80Mn | 0 | Direct |