ARM Holdings CCO William Abbey Sells 15,956 Shares in May 2026

This Form 4 filing discloses that William Abbey, Chief Commercial Officer of ARM Holdings PLC, sold 10,887 ordinary shares on May 19, 2026, at a weighted average price of $224.14 per share, and 5,069 ordinary shares on May 20, 2026, at a weighted average price of $257.18 per share. The transactions reduced Abbey's direct holdings from 54,240 shares to 38,284 shares. The shares are held as American Depositary Shares (ADSs), with each ADS representing one ordinary share. The filing includes footnotes indicating the sales occurred at various price points within specified ranges, and the reporting person will provide detailed pricing information upon request. The filing was signed by attorney-in-fact George Kanelos on May 21, 2026.