Arm Holdings plc planned insider sales
In the twelve months since 26 September 2025 insiders at Arm Holdings plc filed 21 Form 144 notices of planned sales, 313,071 shares worth $60.2 million at the time of filing, from 4 sellers. The latest, filed 21 September 2026: Child Jason (officer), 10,400 shares worth $3.1 million, planned for around 21 September 2026 through Fidelity Brokerage Services LLC.
| Filed | Seller | Relationship | Shares | Value | Planned sale | Broker | How acquired | Filing |
|---|---|---|---|---|---|---|---|---|
| 21 September 2026 | Child Jason | Officer | 10,400 | $3.1 million | 21 September 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 27 August 2026 | Child Jason | Officer | 10,400 | $2.7 million | 27 August 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 21 May 2026 | Eaton Charlotte Claire | Officer | 11,805 | $3.4 million | 21 May 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 20 May 2026 | Eaton Charlotte Claire | Officer | 3,100 | $781,978 | 20 May 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 20 May 2026 | Child Jason | Officer | 31,920 | $7.2 million | 20 May 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 19 May 2026 | Collins Spencer | Officer, Director | 40,941 | $8.8 million | 19 May 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 11 May 2026 | Collins Spencer | Officer | 51,961 | $11.0 million | 11 May 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 22 April 2026 | Child Jason | Officer | 21,280 | $3.8 million | 22 April 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 14 April 2026 | Haas Rene A. | Officer, Director | 9,299 | $1.5 million | 14 April 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 26 March 2026 | Haas Rene A. | Officer, Director | 7,986 | $1.3 million | 26 March 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 25 March 2026 | Child Jason | Officer | 21,280 | $3.2 million | 25 March 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 25 March 2026 | Haas Rene A. | Officer, Director | 23,867 | $3.8 million | 25 March 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 27 February 2026 | Haas Rene A. | Officer, Director | 6,152 | $776,044 | 27 February 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 18 February 2026 | Child Jason | Officer | 10,640 | $1.4 million | 18 February 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 30 January 2026 | Haas Rene A. | Officer, Director | 6,152 | $653,939 | 30 January 2026 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 31 December 2025 | Haas Rene A. | Officer, Director | 6,152 | $678,957 | 31 December 2025 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 28 November 2025 | Haas Rene A. | Officer, Director | 6,152 | $827,400 | 28 November 2025 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 19 November 2025 | Child Jason | Officer | 10,640 | $1.5 million | 19 November 2025 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 31 October 2025 | Haas Rene A. | Officer, Director | 6,152 | $1.0 million | 31 October 2025 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 14 October 2025 | Child Jason | Officer | 10,640 | $1.9 million | 14 October 2025 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
| 30 September 2025 | Haas Rene A. | Officer, Director | 6,152 | $862,348 | 30 September 2025 | Fidelity Brokerage Services LLC | Restricted Stock Vesting | Form 144 |
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was. Value is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.
Source
Form 144 filings on EDGAR for Arm Holdings plc: the company's filing index, each notice read from its own XML.
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