Arm Holdings CFO Jason Child Files Form 144 to Sell $3.12M in ADSs

Overview

On September 21, 2026, Jason Child, an officer (Chief Financial Officer) of ARM Holdings plc, filed a Form 144 notice disclosing an intention to sell 10,400 American Depositary Shares (ADSs) with an estimated aggregate market value of approximately $3,120,000.00 (implying an estimated price of $300.00 per share).

Transaction Details

• Security: American Depositary Shares
• Units to be Sold: 10,400
• Aggregate Market Value: $3,120,000.00
• Approximate Sale Date: September 21, 2026
• Broker: Fidelity Brokerage Services LLC
• Origin of Shares: The shares were acquired directly from the issuer through restricted stock vesting events (4,290 shares on May 15, 2024, and 6,110 shares on May 15, 2025) as equity compensation.

Trading Plan and Prior Activity

• Rule 10b5-1 Plan: The proposed disposition is executed pursuant to a pre-established trading plan adopted on May 22, 2026.
• Past 3 Months Activity: The filer previously sold 10,400 ADSs on August 27, 2026, generating gross proceeds of $2,655,432.00.

Significance & Market Impact

With 1,064,055,252 ADSs outstanding, the 10,400 shares represent a negligible fraction (<0.001%) of the total shares outstanding. Because this sale is modest in size relative to the issuer's public float and conducted under a predetermined Rule 10b5-1 trading arrangement, its market significance is assessed as Low.