Grisenthwaite Richard Roy has filed 15 insider transactions across 1 company since May 2026.
Most recent transaction: a grant/award of 5217 shares of ARM HOLDINGS PLC /UK ($ARM) on May 15, 2026.
Activity breakdown: 0 open-market purchases and 1 sale.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | A | Ordinary Shares | 5217 | $0.00 | 5,543.0000 | 1,069,000,000 | 1600.31% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Ordinary Shares | 2046 | $0.00 | 7,589.0000 | 1,069,000,000 | 36.91% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Ordinary Shares | 14595 | $0.00 | 22,184.0000 | 1,069,000,000 | 192.32% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | A | Ordinary Shares | 4158 | $0.00 | 26,342.0000 | 1,069,000,000 | 18.74% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Ordinary Shares | 1631 | $0.00 | 27,973.0000 | 1,069,000,000 | 6.19% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | A | Ordinary Shares | 13315 | $0.00 | 41,288.0000 | 1,069,000,000 | 47.60% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Ordinary Shares | 4352 | $0.00 | 45,640.0000 | 1,069,000,000 | 10.54% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | F | Ordinary Shares | 21301 | $209.16 | 24,339.0000 | 1,069,000,000 | 46.67% | 0.00% |
| May 18, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | S | Ordinary Shares | 24339 | $209.15 | 0.0000 | 1,069,000,000 | 100.00% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | A | Restricted Stock Units | 6648 | $0.00 | 106,282.0000 | 1,069,000,000 | 6.67% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | A | Restricted Stock Units | 34785 | $0.00 | 141,067.0000 | 1,069,000,000 | 32.73% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Restricted Stock Units | 2046 | $0.00 | 139,021.0000 | 1,069,000,000 | 1.45% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Restricted Stock Units | 14595 | $0.00 | 124,426.0000 | 1,069,000,000 | 10.50% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Restricted Stock Units | 1631 | $0.00 | 122,795.0000 | 1,069,000,000 | 1.31% | 0.00% |
| May 15, 2026 | ARM HOLDINGS PLC /UK | $ARM | Grisenthwaite Richard Roy | Chief Architect | M | Restricted Stock Units | 4352 | $0.00 | 118,443.0000 | 1,069,000,000 | 3.54% | 0.00% |