Arbuckle Stuart A 4
4 · ALNYLAM PHARMACEUTICALS, INC. · Filed May 22, 2026
Research Summary
AI-generated summary of this filing
Alnylam Director Stuart Arbuckle Receives RSU Awards
What Happened
Stuart A. Arbuckle, a director of Alnylam Pharmaceuticals (ALNY), was granted a total of 2,112 award units on 2026-05-20: 671 shares represented by restricted stock units (RSUs) and 1,441 shares listed as a derivative award. Both grants show an acquisition price of $0.00 (awards, not open-market purchases). The awards were made under the company’s 2018 Stock Incentive Plan.
Key Details
- Transaction date: 2026-05-20; Form 4 filed: 2026-05-22 (timely within the two-business-day reporting window).
- Awards: 671 RSUs (F1) + 1,441 derivative award units (F2) — total 2,112 units; $0.00 per unit at grant.
- Vesting: Both awards vest in full upon the earlier of the first anniversary of the grant date or earlier retirement/resignation (only if that retirement/resignation occurs no more than 90 days before the first anniversary) — see footnotes F1 and F2.
- Shares owned after transaction: Not specified in the provided Form 4 excerpt.
- Filing timeliness: Reported on 2026-05-22 for a 2026-05-20 grant — appears timely.
Context
RSUs and similar derivative awards are common director compensation and are contingent on continued service (and here may accelerate only under limited retirement/resignation conditions). These grants involve no cash paid by the director; they represent a contingent right to receive shares if and when vesting conditions are met. Grants are informational but do not alone indicate buying or selling sentiment.
Insider Transaction Report
- Award
Common Stock
[F1]2026-05-20+671→ 671 total - Award
Stock Option (Right to Buy)
[F2]2026-05-20+1,441→ 1,441 totalExercise: $298.48From: 2027-05-20Exp: 2036-05-20→ Common Stock (1,441 underlying)
Footnotes (2)
- [F1]These shares are represented by restricted stock units (RSUs) granted under the Second Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.
- [F2]The stock option will vest in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.