ALNYLAM PHARMACEUTICALS INC (ALNY) Stock Ownership

NASDAQ:ALNY • US02043Q1076

Current stock price

328.7 USD
+20.65 (+6.7%)
At close:
328.7 USD
0 (0%)
After Hours:

ALNY Ownership information

ALNY Ownership Chart.ALNY Ownership Chart: showing Insider, Institutional ownership and shares available to the public.ALNY Ownership.InsiderInstitutional



Shares Outstanding132.62M
Float131.71M
Float Short Interest Percentage3.48%
Owners (insider)0.22%
Owners (institutional)101.56%
Owners (insider) change10.84%
Owners (institutional) change-1.68%
ALNY Institutional Ownership HistoryALNY Institutional Ownership HistoryALNY Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 20M 40M 60M 80M 100M
ALNY Historical Insider Transactions ChartALNY Historical Insider Buy and Sell Transactions ChartALNY Historical Insider Transactions Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 0 20K -20K 40K -40K 60K -60K
DateNameTypeSharesPriceAmount
Mar 4, 2026Garg PushkalOpen Market Sale4713323.53$ 1,524,795.55
Mar 4, 2026Greenstreet YvonneOpen Market Sale2933323.08$ 947,580.95
Mar 4, 2026Poulton Jeffrey V.Open Market Sale2468323.08$ 797,350.54
Mar 4, 2026Tanguler TolgaOpen Market Sale2309323.08$ 745,983.83
Mar 4, 2026Fitzgerald Kevin JosephOpen Market Sale1291323.54$ 417,685.48
Mar 2, 2026Tanguler TolgaGrant47690.00$ 0.00
Mar 2, 2026Tanguler TolgaOpen Market Sale1598327.65$ 523,583.78
Mar 2, 2026SUPRAN BRYANGrant15390.00$ 0.00
Mar 2, 2026Greenstreet YvonneGrant138440.00$ 0.00
Mar 2, 2026Greenstreet YvonneOpen Market Sale6799327.65$ 2,227,698.49
Mar 2, 2026Poulton Jeffrey V.Grant47690.00$ 0.00
Mar 2, 2026Poulton Jeffrey V.Open Market Sale2206327.65$ 722,800.78
Mar 2, 2026Garg PushkalGrant47690.00$ 0.00
Mar 2, 2026Garg PushkalOpen Market Sale3492323.63$ 1,130,131.45
Mar 2, 2026Fitzgerald Kevin JosephGrant36880.00$ 0.00
Mar 2, 2026Fitzgerald Kevin JosephOpen Market Sale3250323.62$ 1,051,773.01
Feb 27, 2026Greenstreet YvonneOption Excercise59210.00$ 0.00
Feb 27, 2026Poulton Jeffrey V.Option Excercise19080.00$ 0.00
Feb 27, 2026Tanguler TolgaOption Excercise16660.00$ 0.00
Feb 27, 2026Garg PushkalOption Excercise19080.00$ 0.00
Feb 27, 2026Garg PushkalOpen Market Sale4627331.34$ 1,533,099.58
Feb 23, 2026Fitzgerald Kevin JosephGrant1580.00$ 0.00
Feb 13, 2026Garg PushkalOpen Market Sale2242310.08$ 695,201.15
Feb 13, 2026Greenstreet YvonneOpen Market Sale6958310.08$ 2,157,542.21
Feb 13, 2026Tanguler TolgaOpen Market Sale1959310.08$ 607,448.29
Feb 13, 2026Fitzgerald Kevin JosephOpen Market Sale4000321.24$ 1,284,979.87
Feb 13, 2026Poulton Jeffrey V.Open Market Sale2242310.08$ 695,201.15
Feb 12, 2026Garg PushkalGrant45790.00$ 0.00
Feb 12, 2026Greenstreet YvonneGrant142090.00$ 0.00
Feb 12, 2026Tanguler TolgaGrant40000.00$ 0.00
Feb 12, 2026Fitzgerald Kevin JosephGrant40000.00$ 0.00
Feb 12, 2026Poulton Jeffrey V.Grant45790.00$ 0.00
Jan 12, 2026Garg PushkalOpen Market Sale1510362.87$ 547,928.97
Jan 12, 2026Greenstreet YvonneOpen Market Sale9577362.86$ 3,475,156.51
Jan 12, 2026Poulton Jeffrey V.Open Market Sale2780362.87$ 1,008,765.87
Jan 12, 2026Tanguler TolgaOpen Market Sale1510362.87$ 547,927.38
Jan 12, 2026Fitzgerald Kevin JosephOpen Market Sale3800367.37$ 1,395,992.00
Jan 11, 2026Garg PushkalGrant38000.00$ 0.00
Jan 11, 2026Greenstreet YvonneGrant190030.00$ 0.00
Jan 11, 2026Poulton Jeffrey V.Grant61930.00$ 0.00
Jan 11, 2026Tanguler TolgaGrant38000.00$ 0.00
Jan 11, 2026Fitzgerald Kevin JosephGrant38000.00$ 0.00
Nov 26, 2025Greenstreet YvonneOption Excercise4697106.40$ 499,756.23
Nov 26, 2025Greenstreet YvonneOption Excercise1121445.12$ 498,979.52
Nov 17, 2025Fitzgerald Kevin JosephOption Excercise8161119.13$ 972,219.93
Nov 17, 2025Fitzgerald Kevin JosephOpen Market Sale12128452.18$ 5,483,989.61
Nov 12, 2025Greenstreet YvonneOption Excercise25650117.18$ 3,005,693.00
Nov 12, 2025Greenstreet YvonneOpen Market Sale25650452.75$ 11,613,003.42
Oct 2, 2025Poulton Jeffrey V.Open Market Sale3821452.05$ 1,727,283.60
Oct 2, 2025Tanguler TolgaOpen Market Sale1405452.05$ 635,126.28
Oct 2, 2025Greenstreet YvonneOpen Market Sale8924452.05$ 4,034,084.66
Oct 2, 2025Garg PushkalOpen Market Sale5959451.76$ 2,692,061.89
Oct 2, 2025Fitzgerald Kevin JosephOpen Market Sale2441452.05$ 1,103,451.46
Oct 1, 2025SUPRAN BRYANGrant130260.00$ 0.00
Oct 1, 2025Poulton Jeffrey V.Grant77520.00$ 0.00
Oct 1, 2025Tanguler TolgaGrant28510.00$ 0.00
Oct 1, 2025Greenstreet YvonneGrant181120.00$ 0.00
Oct 1, 2025Garg PushkalGrant59590.00$ 0.00
Oct 1, 2025Fitzgerald Kevin JosephGrant49530.00$ 0.00
Sep 9, 2025Reitan Colleen FOption Excercise18000100.65$ 1,811,700.00
Sep 9, 2025Reitan Colleen FOpen Market Sale18000467.60$ 8,416,729.64
Aug 29, 2025Tanguler TolgaOpen Market Sale3474448.37$ 1,557,649.44
Aug 18, 2025Garg PushkalOpen Market Sale2851455.89$ 1,299,745.87
Aug 18, 2025Tanguler TolgaOpen Market Sale1396453.27$ 632,758.71
Aug 18, 2025Greenstreet YvonneOpen Market Sale6979453.27$ 3,163,345.74
Aug 18, 2025Poulton Jeffrey V.Open Market Sale2274453.27$ 1,030,727.12
Aug 18, 2025BONNEY MICHAEL WOption Excercise1125070.20$ 789,750.00
Aug 18, 2025BONNEY MICHAEL WOpen Market Sale11250450.00$ 5,062,500.00
Aug 18, 2025Fitzgerald Kevin JosephOpen Market Sale1396453.27$ 632,758.71
Aug 15, 2025Garg PushkalGrant28510.00$ 0.00
Aug 15, 2025Tanguler TolgaGrant28510.00$ 0.00
Aug 15, 2025Greenstreet YvonneGrant142520.00$ 0.00
Aug 15, 2025Poulton Jeffrey V.Grant46440.00$ 0.00
Aug 15, 2025Fitzgerald Kevin JosephGrant28510.00$ 0.00
Aug 14, 2025Ausiello Dennis AOption Excercise31448131.34$ 4,130,478.34
Aug 14, 2025Ausiello Dennis AOpen Market Sale31448436.58$ 13,729,535.65
Jul 1, 2025Fitzgerald Kevin JosephGrant77630.00$ 0.00
May 30, 2025Greenstreet YvonneOption Excercise50937118.56$ 6,039,206.73
May 30, 2025Greenstreet YvonneOpen Market Sale50937305.00$ 15,535,784.00
May 16, 2025Greenstreet YvonneOther Disposition83760.00$ 0.00
May 15, 2025BONNEY MICHAEL WOption Excercise11250131.21$ 1,476,112.50
May 15, 2025BONNEY MICHAEL WOpen Market Sale11250277.71$ 3,124,216.94
May 8, 2025Sigal Charles ElliottGrant7750.00$ 0.00
May 8, 2025Bertozzi Carolyn RGrant7750.00$ 0.00
May 8, 2025Ausiello Dennis AGrant7750.00$ 0.00
May 8, 2025BONNEY MICHAEL WGrant7750.00$ 0.00
May 8, 2025BRANDICOURT OLIVIERGrant7750.00$ 0.00
May 8, 2025HAMBURG MARGARET AGrant7750.00$ 0.00
May 8, 2025KELLOGG PETER NGrant7750.00$ 0.00
May 8, 2025PYOTT DAVID E IGrant7750.00$ 0.00
May 8, 2025Reitan Colleen FGrant7750.00$ 0.00
May 8, 2025SCHULMAN AMY WGrant7750.00$ 0.00
May 2, 2025Greenstreet YvonneOther Disposition413110.00$ 0.00