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ALTIMMUNE INC (ALT) Stock Ownership and Short Interest

USA - NASDAQ:ALT - US02155H2004 - Common Stock

3.83 USD
-0.06 (-1.54%)
Last: 10/17/2025, 8:00:00 PM
3.8786 USD
+0.05 (+1.27%)
After Hours: 10/17/2025, 8:00:00 PM
ALT Ownership Chart.ALT Ownership Chart: showing Insider, Institutional ownership and shares available to the public.ALT Ownership.InsiderInstitutionalPublic



Shares Outstanding88.26M
Float87.57M
Float Short Interest Percentage28.65%
Owners (insider)0.77%
Owners (institutional)43.36%
Owners (insider) change0.08%
Owners (institutional) change-0.07%
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 10M 20M 30M 40M
ALT Historical Insider Transactions ChartALT Historical Insider Buy and Sell Transactions ChartALT Historical Insider Transactions Nov 2024 Dec 2024 Jan 2025 Feb 2025 Mar 2025 Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 0 50K -50K 100K
Date Name Type Shares Price Amount
Jul 31, 2025 Jordt Raymond M Grant 1368 3.14 $ 4,295.52
Jul 31, 2025 Harris Matthew Scott Grant 2018 3.14 $ 6,336.52
Jul 31, 2025 Roberts M Scot Grant 846 3.14 $ 2,656.44
Mar 17, 2025 Sohn Catherine A. Open Market Purchase 1000 5.78 $ 5,784.50
Mar 13, 2025 WEAVER GREGORY L Open Market Purchase 10000 5.20 $ 51,996.00
Mar 7, 2025 Harris Matthew Scott Other Disposition 67787 0.00 $ 0.00
Jan 31, 2025 Garg Vipin K Grant 4105 5.18 $ 21,263.90
Jan 31, 2025 Harris Matthew Scott Grant 1905 5.18 $ 9,867.90
Jan 31, 2025 Jordt Raymond M Grant 2614 5.18 $ 13,540.52
Jan 31, 2025 Roberts M Scot Grant 3184 5.18 $ 16,493.12
Jan 30, 2025 Garg Vipin K Option Excercise 27214 6.79 $ 184,913.32
Jan 30, 2025 Harris Matthew Scott Option Excercise 23216 0.00 $ 0.00
Jan 30, 2025 Harris Matthew Scott Option Excercise 7990 6.78 $ 54,195.88
Jan 30, 2025 Roberts M Scot Option Excercise 23216 0.00 $ 0.00
Jan 30, 2025 Roberts M Scot Option Excercise 6826 6.78 $ 46,299.88
Jan 30, 2025 Garg Vipin K Option Excercise 62270 0.00 $ 0.00
Jan 25, 2025 Roberts M Scot Option Excercise 14600 0.00 $ 0.00
Jan 25, 2025 Roberts M Scot Option Excercise 4264 6.98 $ 29,762.72
Jan 25, 2025 Jordt Raymond M Option Excercise 14600 0.00 $ 0.00
Jan 25, 2025 Jordt Raymond M Option Excercise 3862 6.98 $ 26,956.76
Jan 25, 2025 Harris Matthew Scott Option Excercise 14600 0.00 $ 0.00
Jan 25, 2025 Harris Matthew Scott Option Excercise 4994 6.98 $ 34,858.12
Jan 25, 2025 Garg Vipin K Option Excercise 42050 0.00 $ 0.00
Jan 25, 2025 Garg Vipin K Option Excercise 18157 6.98 $ 126,735.86
Jan 1, 2025 Jordt Raymond M Option Excercise 9375 0.00 $ 0.00
Jan 1, 2025 Jordt Raymond M Option Excercise 2485 7.21 $ 17,916.85