Fitzgerald Kevin Joseph 4
4 · ALNYLAM PHARMACEUTICALS, INC. · Filed Mar 6, 2026
Research Summary
AI-generated summary of this filing
Alnylam (ALNY) CSO & EVP Kevin Fitzgerald Sells 1,291 Shares
What Happened
- Kevin J. Fitzgerald, CSO & EVP, Head of Research at Alnylam Pharmaceuticals, sold a total of 1,291 ALNY shares in open-market transactions on March 4–5, 2026, generating approximately $417,685 in proceeds. Individual lots ranged from 28 to 233 shares at prices between about $319 and $326 per share.
- These were sales (routine disposition), not purchases; several sales appear to be automatic tax-withholding sell-to-cover transactions tied to vesting restricted stock units, and at least one sale was executed under a Rule 10b5-1 trading plan.
Key Details
- Transaction dates: 2026-03-04 and 2026-03-05. Report filed 2026-03-06 (filed within the typical 2-business-day Form 4 window).
- Shares sold: 1,291 total; proceeds ≈ $417,685; weighted-average price ≈ $323.6/share (approx).
- Notable footnotes: filing indicates mandatory sell-to-cover for RSU tax withholding and at least one transaction pursuant to a Rule 10b5-1 plan adopted Aug 14, 2025. Several reported prices represent weighted averages across narrow price ranges (see footnotes F2–F14).
- Shares owned after the transactions: not disclosed in the provided excerpt of the filing.
- Filing timeliness: appears timely (filed Mar 6 for trades on Mar 4–5).
Context
- Sales used to satisfy tax withholding on vested awards (sell-to-cover) are routine and do not necessarily indicate a change in the insider’s view of the company. A 10b5-1 plan means at least some trades were pre-scheduled and not ad hoc.
- For retail investors, purchases generally carry more interpretive weight than routine sales; these transactions appear to be standard compensation/tax-related and plan-driven dispositions rather than opportunistic buys or large strategic sells.
Insider Transaction Report
Form 4
Fitzgerald Kevin Joseph
CSO & EVP, Head of Research
Transactions
- Sale
Common Stock
[F1][F2]2026-03-04$319.03/sh−29$9,252→ 21,831 total - Sale
Common Stock
[F1][F3]2026-03-04$320.01/sh−28$8,960→ 21,803 total - Sale
Common Stock
[F1][F4]2026-03-04$320.81/sh−59$18,928→ 21,744 total - Sale
Common Stock
[F1][F5]2026-03-04$321.82/sh−79$25,424→ 21,665 total - Sale
Common Stock
[F1][F6]2026-03-04$323.01/sh−96$31,009→ 21,569 total - Sale
Common Stock
[F1][F7]2026-03-04$323.84/sh−210$68,006→ 21,359 total - Sale
Common Stock
[F1][F8]2026-03-04$324.88/sh−75$24,366→ 21,284 total - Sale
Common Stock
[F1][F9]2026-03-04$325.67/sh−57$18,563→ 21,227 total - Sale
Common Stock
[F10][F11]2026-03-05$321.81/sh−124$39,904→ 21,103 total - Sale
Common Stock
[F10][F12]2026-03-05$323.25/sh−233$75,317→ 20,870 total - Sale
Common Stock
[F10][F13]2026-03-05$324.60/sh−148$48,041→ 20,722 total - Sale
Common Stock
[F10][F14]2026-03-05$326.24/sh−153$49,915→ 20,569 total
Holdings
- 537(indirect: by Managed Account)
Common Stock
[F15]
Footnotes (15)
- [F1]Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement to cover minimum statutory tax withholding obligations upon the vesting of restricted stock units.
- [F10]This transaction was made pursuant to a Rule 10b5-1(c) trading plan adopted by the Reporting Person on August 14, 2025.
- [F11]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $321.43 to $322.00. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F12]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $322.81 to $323.65. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F13]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $324.36 to $325.01. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F14]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $326.01 to $326.40. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F15]Reflects shares of ALNY common stock acquired by the Reporting Person under the issuer 401(k) plan as a result of the issuer 401(k) matching contribution program.
- [F2]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $318.27 to $319.27. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F3]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $319.28 to $320.28. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F4]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $320.33 to $321.33. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F5]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $321.34 to $322.31. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F6]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $322.36 to $323.36. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F7]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $323.38 to $324.35. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F8]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $324.39 to $325.38. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
- [F9]The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $325.40 to $326.21. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
Signature
By: Brett Budzinski, Attorney-in-Fact For: Kevin Fitzgerald|2026-03-06