Grisenthwaite Richard Roy's Form 4 filing
Arm Holdings PLC (ARM) · filed May 19, 2026
- Accession no.
- 0001973239-26-000076
- Filed
- May 19, 2026
- Trade date
- May 15-18, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Not checked
This filing lists 9 non-derivative transactions and 6 derivative transactions. Open-market sales total $5.09M. It was filed 4 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Grisenthwaite Richard RoyCIK 0002112445 | Officer (Chief Architect) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +5,217 | – | – | 5,543 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +2,046 | – | – | 7,589 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +14,595 | – | – | 22,184 | Direct | |
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +4,158 | – | – | 26,342 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +1,631 | – | – | 27,973 | Direct | |
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +13,315 | – | – | 41,288 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +4,352 | – | – | 45,640 | Direct | |
| May 15, 2026 | Ordinary Shares | FTax withholdingDisposed | −21,301 | $209.16 | −$4,455,317.16 | 24,339 | Direct | |
| May 18, 2026 | Ordinary Shares | SSaleDisposed | −24,339 | $209.15 | −$5,090,501.85 | 0 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +6,648 | $0.00 | $0 | 106,282 | Direct | |
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +34,785 | $0.00 | $0 | 141,067 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −2,046 | $0.00 | $0 | 139,021 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −14,595 | $0.00 | $0 | 124,426 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −1,631 | $0.00 | $0 | 122,795 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −4,352 | $0.00 | $0 | 118,443 | Direct |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.