Abbey William's Form 4 filing
Arm Holdings PLC (ARM) · filed May 19, 2026
- Accession no.
- 0001973239-26-000078
- Filed
- May 19, 2026
- Trade date
- Apr 23-May 15, 2026
- Filing delay
- 26 daysLate
- Rule 10b5-1 plan
- Checked
This filing lists 10 non-derivative transactions and 4 derivative transactions. Open-market sales total $2.15M. It was filed 26 days after the trade, past the 2-business-day deadline.
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 |
|---|---|
| Abbey WilliamCIK 0001945497 | Officer (Chief Commercial Officer) |
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 | +4,466 | –F3 | – | 52,667 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +1,751 | –F3 | – | 54,418 | Direct | |
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +4,444 | –F3 | – | 58,862 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +1,743 | –F3 | – | 60,605 | Direct | |
| May 15, 2026 | Ordinary Shares | AGrant or awardAcquired | +14,400 | –F3 | – | 75,005 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseAcquired | +4,706 | –F3 | – | 79,711 | Direct | |
| May 15, 2026 | Ordinary Shares | FTax withholdingDisposed | −15,317 | $209.16 | −$3,203,703.72 | 64,394 | Direct | |
| May 15, 2026 | Ordinary Shares | SSaleDisposed | −7,000 | $212.55F10 | −$1,487,850 | 57,394 | Direct | |
| Apr 24, 2026 | Ordinary Shares | SSaleDisposed | −1,577 | $221.99 | −$350,078.23 | 55,817 | Direct | |
| Apr 23, 2026 | Ordinary Shares | SSaleDisposed | −1,577 | $199.00 | −$313,823 | 54,240 | 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 | +5,566 | $0.00 | $0 | 56,182 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −1,751 | $0.00 | $0 | 54,431 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −1,743 | $0.00 | $0 | 52,688 | Direct | |
| May 15, 2026 | Ordinary Shares | MOption exerciseDisposed | −4,706 | $0.00 | $0 | 47,982 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F3
Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
Referenced by the price of 6 transactions in Table I.
- F10
Represents weighted average sales price. The shares were sold at prices ranging from $212.51 to $212.76. The reporting person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.