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Alnylam Pharmaceuticals, Inc.

ALNY
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001178670

In the last 90 days, Alnylam Pharmaceuticals, Inc. insiders filed 2 open-market purchases and 1 sale; 797 institutions reported holding it in 13F filings for Q2 2026, worth $40.1B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Alnylam Pharmaceuticals, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
2 filings
2 insiders, $543.1K in total
Open-market sells
1 filing
1 insider, $398.9K in total
Insiders trading
3
Net value
+$144.3K
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Alnylam Pharmaceuticals, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Alnylam Pharmaceuticals, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Pyott David E IDirector5,362Nov 12, 20263
Sigal Charles ElliottDirector3,600IndirectNov 12, 20262
Schulman Amy WDirector25,959Nov 12, 20263
Supran BryanEVP, CLO and Secretary12,807Oct 6, 20262
Greenstreet YvonneChief Executive Officer95,802Sep 22, 20268
Cravatt BenjaminDirector–Jun 3, 20261
Kellogg Peter NDirector1,446May 22, 20261
Hamburg Margaret ADirector1,582May 22, 20261
Ausiello Dennis ADirector1,582May 22, 20261
Brandicourt OlivierDirector1,446May 22, 20261
Arbuckle Stuart ADirector671May 22, 20262
Reitan Colleen FDirector1,446May 22, 20261
McLaughlin MelissaChief Human Resources Officer9,443Apr 7, 20261
Poulton Jeffrey V.EVP, Chief Financial Officer61,805Mar 6, 20265
Garg PushkalEVP Chief R&D18,693Mar 6, 20265
Tanguler TolgaEVP, Chief Commercial Officer34,297Mar 6, 20265
Fitzgerald Kevin JosephCSO & EVP, Head of Research20,569Mar 6, 20266
Bonney Michael WDirector16,804Aug 19, 20250
Bertozzi Carolyn RDirector775May 12, 20250
Hesslein Robert W.EVP, CLO and Secretary8,002Mar 5, 20250
Sharp Phillip ADirector0Jan 24, 20250
Franchini Indrani LallEVP, CLO & Secretary4,133Feb 29, 20240
Vaishnaw AkshayPresident22,774Aug 7, 20230
Fanucci MarshaDirector136May 19, 20230
Paul Steven MDirector1,000Apr 5, 20220
Maraganore JohnChief Executive Officer227,663Dec 23, 20210
Keating LaurieEVP, Chief Legal Officer5,132Aug 9, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Nov 12, 2026 (view filing)4:05 PM ETNov 102 daysSigal Charles ElliottDirectorPPurchase+1.60K$152.25+$243.6K+80.0%3.60K after
Nov 12, 2026 (view filing)4:01 PM ETNov 93 daysSchulman Amy WDirectorPPurchase+1.91K$156.82+$299.5K+7.9%26.0K after
Oct 6, 2026 (view filing)4:12 PM ETOct 24 daysSupran BryanEVP, CLO and SecretarySSale−1.76K$226.88−$398.9K−12.1%12.8K after
Jun 3, 2026 (view filing)Jun 12 daysPyott David E IDirectorSSale−3.83K$299.18−$1.15M−70.8%1.58K after5 lots10b5-1
Apr 7, 2026 (view filing)Apr 2-65 daysLateMcLaughlin MelissaChief Human Resources OfficerSSale−3.91K$325.92−$1.27M−29.3%9.44K after14 lots10b5-1
Mar 6, 2026 (view filing)Mar 4-52 daysGarg PushkalEVP Chief R&DSSale−4.71K$323.53−$1.52M−20.1%18.7K after12 lots10b5-1
Mar 6, 2026 (view filing)Mar 42 daysGreenstreet YvonneChief Executive OfficerSSale−2.93K$323.08−$947.6K−3.0%95.7K after8 lots
Mar 6, 2026 (view filing)Mar 42 daysPoulton Jeffrey V.EVP, Chief Financial OfficerSSale−2.47K$323.08−$797.4K−3.8%61.8K after8 lots
Mar 6, 2026 (view filing)Mar 42 daysTanguler TolgaEVP, Chief Commercial OfficerSSale−2.31K$323.08−$746.0K−6.3%34.3K after8 lots
Mar 6, 2026 (view filing)Mar 4-52 daysFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−1.29K$323.54−$417.7K−5.9%20.6K after12 lots10b5-1
Mar 4, 2026 (view filing)Mar 22 daysPoulton Jeffrey V.EVP, Chief Financial OfficerSSale−2.21K$327.65−$722.8K−3.3%64.3K after10 lots
Mar 4, 2026 (view filing)Mar 2-32 daysGarg PushkalEVP Chief R&DSSale−3.49K$323.63−$1.13M−13.0%23.4K after14 lots10b5-1
Mar 4, 2026 (view filing)Mar 2-32 daysFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−3.25K$323.62−$1.05M−12.9%21.9K after14 lots10b5-1
Mar 4, 2026 (view filing)Mar 22 daysTanguler TolgaEVP, Chief Commercial OfficerSSale−1.60K$327.65−$523.6K−4.2%36.6K after10 lots
Mar 4, 2026 (view filing)Mar 22 daysGreenstreet YvonneChief Executive OfficerSSale−6.80K$327.65−$2.23M−6.4%98.6K after10 lots
Mar 2, 2026 (view filing)Feb 273 daysGarg PushkalEVP Chief R&DSSale−4.63K$331.34−$1.53M−17.3%22.1K after5 lots10b5-1
Feb 17, 2026 (view filing)Feb 134 daysGarg PushkalEVP Chief R&DSSale−2.24K$310.08−$695.2K−8.3%24.8K after
Feb 17, 2026 (view filing)Feb 134 daysGreenstreet YvonneChief Executive OfficerSSale−6.96K$310.08−$2.16M−7.5%85.7K after
Feb 17, 2026 (view filing)Feb 134 daysTanguler TolgaEVP, Chief Commercial OfficerSSale−1.96K$310.08−$607.4K−5.8%31.8K after
Feb 17, 2026 (view filing)Feb 13-174 daysFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−4.00K$321.24−$1.28M−15.8%21.3K after2 lots10b5-1
Feb 17, 2026 (view filing)Feb 134 daysPoulton Jeffrey V.EVP, Chief Financial OfficerSSale−2.24K$310.08−$695.2K−3.6%59.8K after
Jan 14, 2026 (view filing)Jan 122 daysGarg PushkalEVP Chief R&DSSale−1.51K$362.87−$547.9K−6.3%22.5K after21 lots
Jan 14, 2026 (view filing)Jan 122 daysGreenstreet YvonneChief Executive OfficerSSale−9.58K$362.86−$3.48M−10.9%78.4K after21 lots
Jan 14, 2026 (view filing)Jan 122 daysPoulton Jeffrey V.EVP, Chief Financial OfficerSSale−2.78K$362.87−$1.01M−4.6%57.5K after21 lots
Jan 14, 2026 (view filing)Jan 122 daysTanguler TolgaEVP, Chief Commercial OfficerSSale−1.51K$362.87−$547.9K−4.8%29.7K after21 lots
Jan 14, 2026 (view filing)Jan 12-132 daysFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−3.80K$367.37−$1.40M−15.2%21.3K after27 lots10b5-1
Nov 19, 2025 (view filing)Nov 172 daysFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−12.1K$452.18−$5.48M−36.3%21.3K after11 lots10b5-1
Nov 14, 2025 (view filing)Nov 12-132 daysGreenstreet YvonneChief Executive OfficerSSale−25.6K$452.75−$11.6M−28.2%65.4K after20 lots10b5-1
Oct 3, 2025 (view filing)Oct 21 dayPoulton Jeffrey V.EVP, Chief Financial OfficerSSale−3.82K$452.05−$1.73M−6.6%54.1K after12 lots
Oct 3, 2025 (view filing)Oct 21 dayGreenstreet YvonneChief Executive OfficerSSale−8.92K$452.05−$4.03M−12.0%65.4K after12 lots
Oct 3, 2025 (view filing)Oct 21 dayTanguler TolgaEVP, Chief Commercial OfficerSSale−1.41K$452.05−$635.1K−4.9%27.4K after12 lots
Oct 3, 2025 (view filing)Oct 21 dayFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−2.44K$452.05−$1.10M−8.8%25.2K after12 lots
Oct 3, 2025 (view filing)Oct 2-31 dayGarg PushkalEVP Chief R&DSSale−5.96K$451.76−$2.69M−22.8%20.2K after17 lots10b5-1
Sep 11, 2025 (view filing)Sep 92 daysReitan Colleen FDirectorSSale−18.0K$467.60−$8.42M−95.9%775 after16 lots10b5-1
Sep 2, 2025 (view filing)Aug 294 daysTanguler TolgaEVP, Chief Commercial OfficerSSale−3.47K$448.37−$1.56M−11.8%26.0K after6 lots10b5-1
Aug 19, 2025 (view filing)Aug 18-191 dayGarg PushkalEVP Chief R&DSSale−2.85K$455.89−$1.30M−12.4%20.2K after14 lots10b5-1
Aug 19, 2025 (view filing)Aug 181 dayTanguler TolgaEVP, Chief Commercial OfficerSSale−1.40K$453.27−$632.8K−4.5%29.5K after8 lots
Aug 19, 2025 (view filing)Aug 181 dayPoulton Jeffrey V.EVP, Chief Financial OfficerSSale−2.27K$453.27−$1.03M−4.3%50.1K after8 lots
Aug 19, 2025 (view filing)Aug 181 dayGreenstreet YvonneChief Executive OfficerSSale−6.98K$453.27−$3.16M−11.0%56.2K after8 lots
Aug 19, 2025 (view filing)Aug 181 dayFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−1.40K$453.27−$632.8K−5.8%22.7K after8 lots
Aug 19, 2025 (view filing)Aug 181 dayBonney Michael WDirectorSSale−11.3K$450.00−$5.06M−40.1%16.8K after10b5-1
Aug 15, 2025 (view filing)Aug 141 dayAusiello Dennis ADirectorSSale−31.4K$436.58−$13.7M−97.2%911 after11 lots10b5-1
Jun 3, 2025 (view filing)May 30-Jun 24 daysGreenstreet YvonneChief Executive OfficerSSale−50.9K$305.00−$15.5M−51.0%48.9K after3 lots10b5-1
May 19, 2025 (view filing)May 154 daysBonney Michael WDirectorSSale−11.3K$277.71−$3.12M−40.1%16.8K after14 lots10b5-1
May 12, 2025 (view filing)Aug 29-Oct 17, 2024256 daysLateReitan Colleen FDirectorPPurchase+36$287.85+$10.4KNew position36 after2 lots
May 12, 2025 (view filing)Apr 1626 daysLateReitan Colleen FDirectorSSale−36$232.86−$8.38K−100.0%0 after
Mar 25, 2025 (view filing)Mar 21-244 daysGarg PushkalCMO & EVP Dev & Med AffairsSSale−9.77K$293.36−$2.86M−32.6%20.2K after2 lots10b5-1
Mar 25, 2025 (view filing)Mar 241 dayPyott David E IDirectorSSale−7.44K$299.00−$2.22M−98.2%136 after10b5-1
Mar 5, 2025 (view filing)Mar 3-42 daysFitzgerald Kevin JosephCSO & EVP, Head of ResearchSSale−2.75K$242.94−$669.3K−16.9%13.5K after14 lots10b5-1
Mar 5, 2025 (view filing)Mar 32 daysTanguler TolgaEVP, Chief Commercial OfficerSSale−471$243.78−$114.8K−1.7%28.0K after6 lots