The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Grisenthwaite Richard Roy since 2026.
This trader's CIK number is 2112445.
At the time of last reporting, Grisenthwaite Richard Roy was the Chief Architect of Arm Holdings Plc /uk. (stock ticker symbol ARM).
Also see all insider trading activities at Arm Holdings Plc /uk.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2026 | ARM | 0 | $0 | 24,339 | $5,090,501 | 22,624 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-05-18 | ARM | Sale | 24,339 | 209.15 | 5,090,501 |
| 2026-05-15 | ARM | Option Ex | 22,624 | .00 | 0 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Grisenthwaite Richard Roy (Chief Architect of Arm Holdings Plc /uk at the time of this reporting) see the Securities and Exchange Commission (SEC) website.