Companies / Alnylam Pharmaceuticals Inc

Alnylam Pharmaceuticals Inc

Nasdaq: ALNYCIK 1178670CAMBRIDGE, MAalnylam.com ↗

Financials · FY2025

Revenue$3.71B
Net income$313.75M
Total debt$677.72M
Cash$1.71B
Diluted EPS$2.33
Shares outstanding133.8M

Ownership

133.8M shares outstanding · as of Jul 24, 2026
0.22%Insiders
Ownership
Insiders0.22%290,317
10%+ / strategic16.25%21,745,061
Institutions88.54%118,468,924
Public float0.00%0

Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 17

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Insider% of sharesShares
Greenstreet YvonneCEOChief Executive Officer · Director
0.07%95,695
Poulton Jeffrey V.EVP, Chief Financial Officer
0.05%61,805
Tanguler TolgaEVP, Chief Commercial Officer
0.03%34,297
Schulman Amy WDirector
0.02%24,049
Fitzgerald Kevin JosephCSO & EVP, Head of Research
0.02%20,569
Garg PushkalEVP Chief R&D
0.01%18,693
Supran BryanEVP, CLO and Secretary
0.01%14,565
McLaughlin MelissaChief Human Resources Officer
<0.01%9,443
Ausiello Dennis ADirector
<0.01%1,582
Hamburg Margaret aDirector
<0.01%1,582

Institutional holders 861

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HolderValue% of shares
Capital World Investors$6.48B12.18%
Fmr LLC$6.32B11.88%
Vanguard Group Inc$5.39B10.13%
BlackRock, Inc.$3.28B8.15%
Capital Research Global Investors$2.70B5.07%
JPMORGAN CHASE &amp; CO$1.88B3.53%
State Street Corporation$1.07B2.66%
Norges Bank$895.82M1.68%
Geode Capital Management, LLC$884.57M1.99%
Invesco Ltd.$861.25M1.62%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Feb 13, 2026Greenstreet Yvonne
CEO
SellCommon Stock$2.16M-7K
-7.51%
85,662
0.06% of shares
medium
May 13, 2026Schulman Amy W
Director
ExerciseCommon Stock$789.8K+11K
+94.06%
23,211
0.02% of shares
low
Feb 27, 2026Garg Pushkal
Executive
SellCommon Stock$747.1K-2K
-8.48%
24,370
0.02% of shares
medium
Feb 13, 2026Garg Pushkal
Executive
SellCommon Stock$695.2K-2K
-8.28%
24,848
0.02% of shares
medium
Feb 13, 2026Poulton Jeffrey V.
Executive
SellCommon Stock$695.2K-2K
-3.61%
59,802
0.04% of shares
medium
Feb 17, 2026Fitzgerald Kevin Joseph
Executive
SellCommon Stock$677.5K-2K
-8.76%
21,264
0.02% of shares
medium
Feb 13, 2026Tanguler Tolga
Executive
SellCommon Stock$607.4K-2K
-5.81%
31,769
0.02% of shares
medium
Feb 13, 2026Fitzgerald Kevin Joseph
Executive
SellCommon Stock$607.4K-2K
-7.75%
23,305
0.02% of shares
medium

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—
Fmr LLCPassive13G/A—14,640,525—
Capital Research Global InvestorsPassive13G/A———
Capital World InvestorsPassive13G/A———
Vanguard Capital ManagementPassive13G—7,104,536—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
ALNY——02043Q107—