ALTIMMUNE INC (ALT) Stock Ownership

NASDAQ:ALT • US02155H2004

Current stock price

2.8 USD
-0.05 (-1.75%)
At close:
2.8384 USD
+0.04 (+1.37%)
After Hours:

ALT Ownership information

ALT Ownership Chart.ALT Ownership Chart: showing Insider, Institutional ownership and shares available to the public.ALT Ownership.InsiderInstitutionalPublic



Shares Outstanding130.11M
Float129.28M
Float Short Interest Percentage22.62%
Owners (insider)0.59%
Owners (institutional)42.59%
Owners (insider) change4.53%
Owners (institutional) change0.28%
ALT Institutional Ownership HistoryALT Institutional Ownership HistoryALT Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 Mar 2026 10M 20M 30M 40M 50M
ALT Historical Insider Transactions ChartALT Historical Insider Buy and Sell Transactions ChartALT Historical Insider Transactions May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 Apr 2026 50K 100K
DateNameTypeSharesPriceAmount
Apr 6, 2026GILL JOHNOpen Market Purchase92003.41$ 31,349.92
Apr 1, 2026WEAVER GREGORY LOpen Market Purchase100003.15$ 31,499.00
Apr 1, 2026Durso Jerome BenedictOpen Market Purchase150003.14$ 47,100.00
Mar 6, 2026WEAVER GREGORY LOpen Market Purchase50003.54$ 17,700.00
Mar 6, 2026Durso Jerome BenedictOpen Market Purchase200003.54$ 70,790.00
Jan 31, 2026Garg Vipin KGrant69263.07$ 21,262.82
Jan 31, 2026Roberts M ScotGrant55673.07$ 17,090.69
Jan 31, 2026Jordt Raymond MGrant45713.07$ 14,032.97
Jan 30, 2026Roberts M ScotOption Excercise170500.00$ 0.00
Jan 30, 2026Roberts M ScotOption Excercise51885.58$ 28,936.35
Jan 30, 2026Garg Vipin KOption Excercise267750.00$ 0.00
Jan 30, 2026Garg Vipin KOption Excercise116325.60$ 65,139.20
Jan 27, 2026Garg Vipin KOption Excercise412000.00$ 0.00
Jan 27, 2026Garg Vipin KOption Excercise178986.18$ 110,609.64
Jan 27, 2026Roberts M ScotOption Excercise158500.00$ 0.00
Jan 27, 2026Roberts M ScotOption Excercise47486.18$ 29,342.64
Jan 27, 2026Jordt Raymond MOption Excercise158500.00$ 0.00
Jan 27, 2026Jordt Raymond MOption Excercise42296.18$ 26,135.22
Jan 25, 2026Jordt Raymond MOption Excercise146000.00$ 0.00
Jan 25, 2026Jordt Raymond MOption Excercise38555.50$ 21,202.50
Jan 25, 2026Garg Vipin KOption Excercise420500.00$ 0.00
Jan 25, 2026Garg Vipin KOption Excercise179845.50$ 98,912.00
Jan 25, 2026Roberts M ScotOption Excercise146000.00$ 0.00
Jan 25, 2026Roberts M ScotOption Excercise43735.50$ 24,051.50
Jan 8, 2026Pisano WayneOpen Market Purchase50004.08$ 20,410.00
Jan 5, 2026Sohn Catherine A.Open Market Purchase5004.24$ 2,117.55
Jan 1, 2026Jordt Raymond MOption Excercise93750.00$ 0.00
Jan 1, 2026Jordt Raymond MOption Excercise24753.61$ 8,934.75
Dec 29, 2025Jorkasky DianeOpen Market Purchase5273.80$ 2,002.60
Dec 23, 2025GILL JOHNOpen Market Purchase125004.10$ 51,250.00
Dec 22, 2025Durso Jerome BenedictOpen Market Purchase125004.13$ 51,568.75
Nov 11, 2025WEAVER GREGORY LOption Excercise187500.00$ 0.00
Nov 11, 2025WEAVER GREGORY LOption Excercise56724.28$ 24,276.16
Jul 31, 2025Jordt Raymond MGrant13683.14$ 4,295.52
Jul 31, 2025Harris Matthew ScottGrant20183.14$ 6,336.52
Jul 31, 2025Roberts M ScotGrant8463.14$ 2,656.44