Richard Roy Grisenthwaite, Chief Architect at ARM HOLDINGS PLC /UK (ARM), sold 45,640 shares at $209.15 ($9.5M) on 2026-05-18, disclosed to the SEC on 2026-05-19.
Open-market sale of $9.5M ARM by Chief Architect. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $209.16 | 21,301 | $4.5M | 46.7% |
| 2 | $209.15 | 24,339 | $5.1M | 53.3% |
| Total | $209.15 avg | 45,640 | $9.5M | 100% |