Abbey William 4
4 · ARM HOLDINGS PLC /UK · Filed May 19, 2026
Research Summary
AI-generated summary of this filing
ARM CCO Abbey William Sells Shares, Exercises RSUs
What Happened
- Abbey William, Chief Commercial Officer of ARM (ARM), had multiple restricted stock units (RSUs) vest and convert to American Depositary Shares (ADSs). Following vesting/conversion, 15,317 shares were withheld to satisfy tax obligations at $209.16/share ($3,203,704). She also sold 7,000 shares in the open market on May 15, 2026 at an average ~$212.55/share ($1,487,850), and previously sold 1,577 shares on April 24, 2026 at $221.99 ($350,078) and 1,577 shares on April 23, 2026 at $199.00 ($313,823). In total the disclosed dispositions on these filings amount to roughly $5.36M. Separately, a new RSU award of 5,566 shares was granted on May 15, 2026 with multi‑year vesting.
Key Details
- Transaction dates & amounts:
- May 15, 2026: 15,317 shares withheld for taxes at $209.16 = $3,203,704 (F = tax withholding)
- May 15, 2026: 7,000 shares sold at weighted avg ≈ $212.55 = $1,487,850 (S; F10 notes price range $212.51–$212.76)
- Apr 24, 2026: 1,577 shares sold at $221.99 = $350,078 (S)
- Apr 23, 2026: 1,577 shares sold at $199.00 = $313,823 (S)
- May 15, 2026: New RSU grant of 5,566 RSUs (vests 30/30/40 on 2027/2028/2029) (A; F12)
- Shares owned after these transactions: not disclosed on the provided Form 4.
- Footnotes of note:
- ADS = 1 Ordinary Share (F1, F3).
- Several vested awards were performance‑based RSUs granted in 2023–2025 and vested May 15, 2026 after committee certification (F2–F8).
- Some sales were made pursuant to a 10b5‑1 trading plan; the filer disclosed these as previously unreported/delinquent transactions (F11).
- Filing timeliness: This Form 4 discloses delinquent transactions and was filed after the reporting period (transactionTimeliness = 'L').
Context
- These filings show RSUs vesting and being converted to ADSs (exercise/conversion, code M), followed by tax‑withholding (F) and open‑market sales (S). Withholding of shares to cover tax is routine for RSU vesting; part of the converted shares were sold under a 10b5‑1 plan. The filing was late and includes disclosure of previously unreported sales — the late filing signals reporting oversight rather than necessarily reflecting trading intent.
Insider Transaction Report
Form 4
Abbey William
Chief Commercial Officer
Transactions
- Award
Ordinary Shares
[F1][F2][F3]2026-05-15+4,466→ 52,667 total - Exercise/Conversion
Ordinary Shares
[F1][F4][F3]2026-05-15+1,751→ 54,418 total - Award
Ordinary Shares
[F1][F5][F3]2026-05-15+4,444→ 58,862 total - Exercise/Conversion
Ordinary Shares
[F1][F6][F3]2026-05-15+1,743→ 60,605 total - Award
Ordinary Shares
[F1][F7][F3]2026-05-15+14,400→ 75,005 total - Exercise/Conversion
Ordinary Shares
[F1][F8][F3]2026-05-15+4,706→ 79,711 total - Tax Payment
Ordinary Shares
[F1][F9]2026-05-15$209.16/sh−15,317$3,203,704→ 64,394 total - Sale
Ordinary Shares
[F1][F10]2026-05-15$212.55/sh−7,000$1,487,850→ 57,394 total - Sale
Ordinary Shares
[F1][F11]2026-04-24$221.99/sh−1,577$350,078→ 55,817 total - Sale
Ordinary Shares
[F1][F11]2026-04-23$199.00/sh−1,577$313,823→ 54,240 total - Award
Restricted Stock Units
[F3][F12]2026-05-15+5,566→ 56,182 total→ Ordinary Shares (5,566 underlying) - Exercise/Conversion
Restricted Stock Units
[F3][F4]2026-05-15−1,751→ 54,431 total→ Ordinary Shares (1,751 underlying) - Exercise/Conversion
Restricted Stock Units
[F3][F6]2026-05-15−1,743→ 52,688 total→ Ordinary Shares (1,743 underlying) - Exercise/Conversion
Restricted Stock Units
[F3][F8]2026-05-15−4,706→ 47,982 total→ Ordinary Shares (4,706 underlying)
Footnotes (12)
- [F1]Ordinary shares, nominal value 0.001 GBP per share ("Ordinary Shares"), are held in the form of American Depositary Shares ("ADSs"). Each ADS represents 1 Ordinary Share.
- [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.
- [F11]The Reporting Person is hereby disclosing delinquent transactions reportable on Form 4 that were not reported due to an inadvertent oversight. These shares were sold pursuant to a 10b5-1 trading plan.
- [F12]This RSU award was granted effective May 15, 2026. 30% will vest on each of May 15, 2027, and May 15, 2028, and the remaining 40% will vest on May 15, 2029, subject to continued service to the Company.
- [F2]Represents performance-based restricted stock units granted on May 1, 2025, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee (the "Remuneration Committee") of the Board of Directors of the Company.
- [F3]Each restricted stock unit ("RSU") represents the right to receive, following vesting, 1 Ordinary Share held in the form of an ADS.
- [F4]This RSU award was granted on May 1, 2025. 30% of the award vested on May 15, 2026. 30% of the award will vest on May 15, 2027, and the remaining 40% will vest on May 15, 2028, subject to continued service to the Company.
- [F5]Represents performance-based RSUs granted on May 13, 2024, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
- [F6]This RSU award was granted on May 13, 2024, 30% of which vested on each of May 15, 2025 and May 15, 2026. The remaining 40% will vest on May 15, 2027, subject to continued service to the Company.
- [F7]Represents performance-based RSUs granted on May 23, 2023, which vested on May 15, 2026, following certification of the satisfaction of certain performance conditions by the Remuneration Committee.
- [F8]This RSU award was granted on May 23, 2023 and vested on May 15, 2026.
- [F9]Ordinary Shares withheld to satisfy tax withholding requirements on vesting of RSUs.
Signature
/s/ George Kanelos, as Attorney-in-Fact for William Abbey|2026-05-19