🕵️ ARM Holdings PLC /UK ($ARM)
SEC insider & ownership activity, last 12 months · CIK 1973239 · every row links its SEC filing
Over the last 12 months insiders sold $66.4M with no open-market buying against it. Collins Spencer sold $19.8M (May). 1 planned sale is pending, the largest $782K (Eaton Charlotte Claire). No red-flag 8-Ks in the window.
🚨 12 signals active —
planned-vs-executed verdicts, pre-event flags, and cluster context live in the
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 7 sellers, $66.4M (39 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Collins Spencer | 0 | – | 9 | $19.8M | May 19, 2026 |
| Child Jason | 0 | – | 3 | $14.2M | May 20, 2026 |
| Abbey William | 0 | – | 10 | $12.0M | Jun 1, 2026 |
| Rene A. Haas | 0 | – | 11 | $6.6M | Apr 14, 2026 |
| Grisenthwaite Richard Roy | 0 | – | 1 | $5.1M | May 18, 2026 |
| Bartels Laura Kathleen | 0 | – | 1 | $4.4M | Jun 2, 2026 |
| Eaton Charlotte Claire | 0 | – | 4 | $4.2M | May 21, 2026 |
5%+ holders
No current 5%+ beneficial-ownership positions on file.
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Eaton Charlotte Claire | $3.4M | May 21, 2026 | filing ↗ |
| Eaton Charlotte Claire | $782K | May 20, 2026 | filing ↗ |
| Child Jason | $7.2M | May 20, 2026 | filing ↗ |
| Collins Spencer | $8.8M | May 19, 2026 | filing ↗ |
| Collins Spencer | $11.0M | May 11, 2026 | filing ↗ |
| Child Jason | $3.8M | Apr 22, 2026 | filing ↗ |
| Rene A. Haas | $1.5M | Apr 14, 2026 | filing ↗ |
| Rene A. Haas | $1.3M | Mar 26, 2026 | filing ↗ |
| Rene A. Haas | $3.8M | Mar 25, 2026 | filing ↗ |
| Child Jason | $3.2M | Mar 25, 2026 | filing ↗ |
| Rene A. Haas | $776K | Feb 27, 2026 | filing ↗ |
| Child Jason | $1.4M | Feb 18, 2026 | filing ↗ |
| Rene A. Haas | $654K | Jan 30, 2026 | filing ↗ |
| Rene A. Haas | $679K | Dec 31, 2025 | filing ↗ |
| Rene A. Haas | $827K | Nov 28, 2025 | filing ↗ |
| Child Jason | $1.5M | Nov 19, 2025 | filing ↗ |
| Rene A. Haas | $1.0M | Oct 31, 2025 | filing ↗ |
| Child Jason | $1.9M | Oct 14, 2025 | filing ↗ |
| Rene A. Haas | $862K | Sep 30, 2025 | filing ↗ |
| Child Jason | $1.5M | Sep 10, 2025 | filing ↗ |
| Child Jason | $1.5M | Sep 5, 2025 | filing ↗ |
Material events (8-K)
No 8-K filings in the last 12 months.