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Arm Holdings plc Chief Commercial Officer William Abbey has filed an initial ownership report showing his equity interests in the company. As of March 18, 2026, he holds 48,201 Ordinary Shares directly, along with several restricted stock unit (RSU) awards that can convert into Ordinary Shares.
The RSUs are tied to service-based vesting schedules. One award granted on December 9, 2025 covers 36,005 underlying Ordinary Shares, vesting 30% on each of November 15, 2026 and November 15, 2027, and 40% on November 15, 2028. Another award granted on May 1, 2025 covers 5,838 underlying Ordinary Shares, vesting 30% on each of May 15, 2026 and May 15, 2027, and 40% on May 15, 2028.
Additional RSU grants include a May 13, 2024 award originally for 5,809 units, of which 30% has already vested, with 30% vesting on May 15, 2026 and 40% on May 15, 2027, and a May 23, 2023 award that will vest on May 15, 2026. Each RSU represents the right to receive one Ordinary Share held in the form of an American Depositary Share.
Arm Holdings plc Chief People Officer Charlotte Claire Eaton filed an initial ownership report showing direct holdings of restricted stock units and ordinary shares. The RSUs correspond to 90,012, 7,336 and 20,313 Ordinary Shares, and she also directly holds 10,765 Ordinary Shares, all in the form of ADSs. The RSU grants vest between 2026 and 2028 in annual or staged installments, subject to continued service.
Arm Holdings plc Chief Legal Officer Spencer Collins discloses his current equity holdings in the company. He directly holds 51,961 Ordinary Shares and several restricted stock unit (RSU) awards that are currently tied to 108,015, 13,947 and 9,216 underlying Ordinary Shares.
One RSU award was granted on December 9, 2025 and is scheduled to vest 30% on each of November 15, 2026 and November 15, 2027, with the remaining 40% on November 15, 2028, subject to continued service. Another was granted on May 1, 2025 with similar 30/30/40 vesting on May 15, 2026, May 15, 2027 and May 15, 2028. An earlier RSU award was granted on May 13, 2024, of which 30% vested on May 15, 2025, with 30% and 40% scheduled to vest on May 15, 2026 and May 15, 2027, subject to continued service. Each RSU represents the right to receive one Ordinary Share, which is held in the form of an American Depositary Share, and each ADS represents one Ordinary Share.
Arm Holdings plc Chief Financial Officer Jason Child reported his initial ownership of company equity. He holds restricted stock units (RSUs) covering 108,015, 15,568 and 10,843 underlying Ordinary Shares, each RSU convertible into one Ordinary Share with a nominal value of 0.001 GBP. He also directly owns 195,986 Ordinary Shares, held in the form of American Depositary Shares, with each ADS representing one Ordinary Share. The RSU grants were made on May 13, 2024, May 1, 2025 and December 9, 2025, and will vest in tranches between May 15, 2026 and November 15, 2028, subject to his continued service with the company.
ARM Holdings director and Chief Executive Officer Rene A. Haas has filed an initial ownership report showing he holds 314,832 Ordinary Shares of the company. These Ordinary Shares have a nominal value of 0.001 GBP per share and are held in the form of American Depositary Shares, with each ADS representing one Ordinary Share.
Arm Holdings plc director Paul E. Jacobs has filed an initial statement of beneficial ownership, showing existing equity and award positions rather than new trades. He reports direct ownership of 5,301 Ordinary Shares and an additional 2,130 Ordinary Shares held indirectly through a trust.
Jacobs also holds restricted stock units covering 2,141 underlying Ordinary Shares. These RSUs carry a zero exercise price and are scheduled to vest in full on May 15, 2026, subject to his continued service to Arm Holdings plc. Each RSU will settle into one Ordinary Share delivered in the form of an American Depositary Share, with each ADS representing one Ordinary Share.
ARM Holdings plc director Rosemary Schooler filed an initial ownership report showing her current equity position. She directly holds 7,431 Ordinary Shares in the form of American Depositary Shares, and 2,141 restricted stock units that each represent one Ordinary Share.
The restricted stock units are scheduled to vest in full on May 15, 2026, subject to her continued service to ARM Holdings plc. After vesting, each unit will deliver one Ordinary Share held as an ADS.
ARM Holdings plc director Jeffrey Sine filed an initial statement of beneficial ownership. He directly holds 7,431 Ordinary Shares, represented by American Depositary Shares. He also holds restricted stock units covering 2,141 underlying Ordinary Shares that are scheduled to vest in full on May 15, 2026, subject to continued service. Each RSU will deliver one Ordinary Share in ADS form after vesting.
Arm Holdings plc director Karen E. Dykstra filed an initial statement of beneficial ownership, reporting both ordinary shares and restricted stock units. She holds 13,002 Ordinary Shares directly and an additional 707 Ordinary Shares indirectly through her spouse. She also reports two blocks of restricted stock units (RSUs) that each convert into ordinary shares held as American Depositary Shares (ADSs), with 2,130 underlying Ordinary Shares in one award and 2,141 underlying Ordinary Shares in another. One RSU grant vested in full on May 15, 2025, while the ADS delivery is deferred until she leaves the Board, and the other is scheduled to vest on May 15, 2026 with delivery likewise deferred until her Board service ends. Each ADS represents one Ordinary Share.
Arm Holdings plc director Young Sohn reported his initial equity position as a company insider. He holds 684 Ordinary Shares directly, plus 2,141 restricted stock units, each representing one Ordinary Share held as an American Depositary Share. These RSUs are scheduled to vest in full on May 15, 2026, subject to his continued service.