ARM HOLDINGS PLC /UK 4

Chief Accounting Officer Laura Kathleen Bartels had RSUs vest into Ordinary Shares and simultaneously had shares withheld for taxes at ARM Holdings plc on 2026-08-17, resulting in increased direct share ownership and updated RSU balances.

On August 17, 2026, ARM Holdings plc Chief Accounting Officer Laura Kathleen Bartels had multiple equity-related transactions tied to the vesting of restricted stock units (RSUs). Two separate RSU grants vested, resulting in the delivery of 862 and 819 Ordinary Shares (in ADS form) to her account, which are reflected as acquisitions reported under transaction code “M,” with her post-transaction direct ownership increasing to 12,997 and 13,816 Ordinary Shares, respectively. Concurrently, 856 Ordinary Shares were withheld and forfeited to the issuer at an implied price of approximately $271.43 per share in order to satisfy tax withholding obligations upon RSU vesting, leaving her with 12,960 directly held Ordinary Shares after that withholding event. She also continues to hold 100,390 and 99,571 RSUs corresponding to the two grants, which will continue to vest quarterly subject to her ongoing service with the company. The transactions are routine equity compensation events and tax withholding rather than open‑market purchases or discretionary sales.

Filing Facts

CIK

1973239

Ticker

ARM

Form

4

Source Type

sec

Accession

0001973239-26-000121

Alert Tier

7