Schooler Rosemary 4

What Happened

• Rosemary Schooler, a director of Arm Holdings plc (ARM), had derivative awards converted and a new restricted stock unit (RSU) award recorded on May 15, 2026. The filing shows conversion/exercise of 2,141 derivative units (code M) and a simultaneous disposal of 2,141 derivative ADSs at $0.00 (no cash proceeds reported). She was also recorded as acquiring 1,531 RSUs (code A) at $0.00.
• The filing uses ADSs (each ADS = 1 ordinary share; footnote F1). The 2,141 units relate to RSUs that vested (footnote F2/F3), and the 1,531 RSUs are reported as an award that will vest subject to conditions (see Key Details).

Key Details

• Transaction date: May 15, 2026; Form 4 filed May 19, 2026 (filed within the Form 4 deadline).
• Specifics: 2,141 derivative units exercised/converted (M) and 2,141 derivative ADSs disposed at $0.00; 1,531 RSUs granted/recorded (A) at $0.00.
• Price/Proceeds: All items shown at $0.00 in the filing; no cash sale proceeds reported.
• Shares owned after transaction: Not disclosed in the filing.
• Notable footnotes:
  • F1: Ordinary shares are held as American Depositary Shares (ADSs); 1 ADS = 1 ordinary share.
  • F2/F3: The RSUs referenced vested in full on May 15, 2026 and each RSU represents the right to receive 1 ADS following vesting.
  • F4: Some RSUs will vest on May 15, 2027 subject to continued service, and delivery of ADSs may be deferred until termination of board service per Ms. Schooler’s election.
• Filing timeliness: Filed May 19 for May 15 transactions — appears timely under Form 4 rules.

Context

• Code M indicates exercise/conversion of derivative awards (here, RSUs converting into ADSs). The immediate $0.00 disposal reported is not an open-market sale with proceeds; filings sometimes show $0 for internal transfers, withholding/settlement, or other non-cash dispositions—this filing does not show cash proceeds.
• The award (1,531 RSUs) is a grant of future shares (an informational bullish signal is limited because delivery is deferred and subject to service). This type of insider RSU activity is typically administrative (vesting/conversion and new grants) rather than an open-market buy or sell.