Ausiello Dennis A 4

What Happened

• Dennis A. Ausiello, a director of Alnylam Pharmaceuticals (ALNY), received equity awards on May 20, 2026: 671 shares granted as restricted stock units (RSUs) and 1,441 shares recorded as a derivative award. Both entries show acquisition at $0.00 in the filing (i.e., awarded, not bought), totaling 2,112 contingent awards.

Key Details

• Transaction date: 2026-05-20; Filing date: 2026-05-22 (appears timely — filed two business days after the transaction).
• Price reported: $0.00 for both awards (these are grants, not cash purchases).
• Shares owned after transaction: Not disclosed in the provided filing.
• Footnotes of note:
  • F1: The 671 RSUs are contingent rights to receive one share each and will vest in full on the earlier of the first anniversary of the grant or earlier retirement/resignation (only if that retirement/resignation occurs no more than 90 days before the first anniversary).
  • F3: The derivative/option-related award will vest on the same timing condition described above.
  • F2: Some Alnylam common stock is held in a trust where the reporting person’s spouse is trustee (relates to holdings, not these specific grants).

Context

• These entries are awards/grants (A), not open-market purchases or sales — common for director compensation and do not by themselves indicate buying/selling sentiment.
• The awards are contingent (RSUs/derivative rights) and will convert to shares only upon vesting per the plan terms noted in the footnotes.