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Richard Roy Grisenthwaite

ARM
CHIEF ARCHITECT · ARM HOLDINGS PLC /UK · CIK 0002112445
FILING MIX · LIFETIME60%/40%
BUYS
9
SELLS
6
TOTAL VALUE
$9.55M
COMPANIES
1
ACTIVE SINCE
May 2026
HOLDINGS NOW
0
AVG SELL PX
$209.15
TRADE KIND
SHOWING 15 / 15
Trades · vs SPY
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Performance · forward returns vs SPY
No backtest data available for Richard Roy Grisenthwaite. Backtests are computed for purchase (P) and sale (S) transactions with resolvable price history.
Holdings over time
ARM · 0 shares · as of May 18, 2026
035,26770,534105,800141,067SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
FLOW · 9 buys / 6 sellsCOVERAGE · 1 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILED
ARM
ARM HOLDINGS PLC /UK
SALE
Chief Architect
24,339$209.15$5.09M0May 18, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASEGRANT
Stock grant
4,15826,342May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASE
Chief Architect
4,35245,640May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
SALE
Chief Architect
4,352118,443May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASEGRANT
Stock grant
13,31541,288May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASE
Chief Architect
14,59522,184May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASE
Chief Architect
1,63127,973May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASEGRANT
Stock grant
6,648106,282May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASEGRANT
Stock grant
34,785141,067May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASEGRANT
Stock grant
5,2175,543May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
SALE
Chief Architect
1,631122,795May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
SALE
Chief Architect
14,595124,426May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
SALE
Chief Architect
21,301$209.16$4.46M24,339May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
SALE
Chief Architect
2,046139,021May 15, 2026May 19, 2026
ARM
ARM HOLDINGS PLC /UK
PURCHASE
Chief Architect
2,0467,589May 15, 2026May 19, 2026
Other insiders · ARM
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About this filer
CIK 0002112445
ROLE
Chief Architect
PRIMARY
ARM
COMPANIES
1
ACTIVE SINCE
May 2026
MARKETPEEL · /INSIDER/0002112445DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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