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Arm Holdings plc has filed its annual Form 20-F for the fiscal year ended March 31, 2026, prepared under U.S. GAAP and presented in U.S. dollars. The company reports that 1,064,055,252 ordinary shares were outstanding as of that date.
The report highlights extensive risks tied to volatility in the semiconductor and electronics industries, intense competition from x86 and open-source RISC-V architectures, and Arm’s strategic push into production silicon, including the Arm AGI CPU and more integrated compute subsystems. Management explains that these moves require significant R&D spending, new manufacturing and supply-chain capabilities, and may create conflicts with existing licensee customers.
Arm also discloses heavy dependence on a concentrated group of customers, including SoftBank Group affiliates and Arm China, as well as significant revenue exposure to the People’s Republic of China. The filing details complex governance and commercial arrangements with Arm China, export-control and geopolitical risks, and the implications of Arm’s status as both a controlled company and a foreign private issuer under U.S. securities rules.
Arm Holdings Chief Commercial Officer William Abbey reported an open-market sale of Ordinary Shares held as American Depositary Shares. On May 21, 2026, he sold 4,655 shares and received a weighted average price within a range of $287.02 to $287.15 per share. Following this transaction, Abbey directly holds 33,629 Ordinary Shares.
ARM Holdings Chief People Officer Charlotte Claire Eaton reported open-market sales of the company’s Ordinary Shares. She sold 5,000 shares on 2026-05-21 at a weighted average price around $291.08 per share and 2,805 shares the same day at $288.10 per share, totaling 7,805 shares. The Ordinary Shares have a nominal value of 0.001 GBP and are held in the form of American Depositary Shares, with each ADS representing one Ordinary Share.
The issuer submitted a Form 144 notice concerning proposed sales of American Depositary Shares tied to restricted stock vesting. The excerpt shows planned sales of 7,960 ADS (vesting 11/15/2025) and 3,845 ADS (vesting 05/15/2026), and a prior sale of 3,100 ADS on 05/20/2026 for $781,978.40.
ARM Holdings PLC Chief Legal Officer Spencer Collins sold 40,941 Ordinary Shares in an open-market transaction. The sale occurred at a price of $215.00 per share and reduced his directly held Ordinary Shares, which are represented by American Depositary Shares on a 1-to-1 basis, to zero following the transaction.
ARM Holdings plc Chief Commercial Officer William Abbey reported open-market sales of company stock. On May 19, 2026, he sold 10,887 Ordinary Shares, which are held as American Depositary Shares, at a weighted average price of $224.14 per share.
On May 20, 2026, he sold an additional 5,069 Ordinary Shares at a weighted average price of $257.18 per share, for total reported sales of 15,956 shares. After these transactions, Abbey directly holds 38,284 Ordinary Shares.
ARM Holdings Chief Financial Officer Jason Child sold 31,920 Ordinary Shares in open-market transactions at a price of $226.54 per share. The shares are held in the form of American Depositary Shares, with each ADS representing one Ordinary Share.
After the sale, Child still holds 174,232 Ordinary Shares, showing he maintains a significant remaining stake in the company. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted by the reporting person, indicating the sale was scheduled in advance rather than timed opportunistically.
Arm Holdings Chief People Officer Charlotte Claire Eaton reported two open-market sales of Ordinary Shares, held as American Depositary Shares. She sold 3,100 shares on May 20, 2026 at a weighted average price of $252.25 per share, and 4,000 shares on May 21, 2026 at a weighted average price of $282.77 per share. The filing notes that actual sale prices on each day ranged within narrow bands around these averages. Following these transactions, Eaton directly owns 7,805 Ordinary Shares.
ARM Form 144 filing lists proposed sales of American Depositary Shares. The filing shows transactions by Jason E. Child of 21,280 ADS on 03/25/2026 (value $3,157,313.60) and 21,280 ADS on 04/22/2026 (value $3,830,400.00). It also records a Restricted Stock Vesting event on 05/15/2025.