ARM Chief Architect Richard Roy sold entire 24,339-share position ($5.1M) at $209.15; now holds zero shares.
Grisenthwaite Richard Roy, Chief Architect, completely exited his 24,339-share holding in ARM HOLDINGS PLC on 2026-05-18 for $5,090,501.85, reducing his position to 0 shares. The sale occurred at $209.15 per share while the stock currently trades at $223.15, representing a 6.8% gap between the transaction price and current price. This represents a complete departure from ARM for a C-level architect role holder, which is material given the insider's technical leadership position; however, without context regarding employment status changes, equity vesting schedules, or disclosed plans, the specific motivation remains opaque. The 90-day price momentum through the transaction date shows +75.4% appreciation, placing this sale within a sustained uptrend.