ALTIMMUNE INC (ALT) Stock Ownership

USA • Nasdaq • NASDAQ:ALT • US02155H2004

4.87 USD
-0.05 (-1.02%)
At close: Feb 6, 2026
4.91 USD
+0.04 (+0.82%)
After Hours: 2/6/2026, 8:17:37 PM
ALT Ownership Chart.ALT Ownership Chart: showing Insider, Institutional ownership and shares available to the public.ALT Ownership.InsiderInstitutionalPublic



Shares Outstanding104.25M
Float103.60M
Float Short Interest Percentage25.49%
Owners (insider)0.63%
Owners (institutional)40.5%
Owners (insider) change3.48%
Owners (institutional) change6.91%
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 Mar 2025 Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 0 50K -50K 100K
Date Name Type Shares Price Amount
Jan 31, 2026 Jordt Raymond M Grant 4571 3.07 $ 14,032.97
Jan 31, 2026 Garg Vipin K Grant 6926 3.07 $ 21,262.82
Jan 31, 2026 Roberts M Scot Grant 5567 3.07 $ 17,090.69
Jan 30, 2026 Garg Vipin K Option Excercise 26775 0.00 $ 0.00
Jan 30, 2026 Garg Vipin K Option Excercise 11632 5.60 $ 65,139.20
Jan 30, 2026 Roberts M Scot Option Excercise 17050 0.00 $ 0.00
Jan 30, 2026 Roberts M Scot Option Excercise 5188 5.58 $ 28,936.35
Jan 27, 2026 Garg Vipin K Option Excercise 41200 0.00 $ 0.00
Jan 27, 2026 Garg Vipin K Option Excercise 17898 6.18 $ 110,609.64
Jan 27, 2026 Roberts M Scot Option Excercise 15850 0.00 $ 0.00
Jan 27, 2026 Roberts M Scot Option Excercise 4748 6.18 $ 29,342.64
Jan 27, 2026 Jordt Raymond M Option Excercise 15850 0.00 $ 0.00
Jan 27, 2026 Jordt Raymond M Option Excercise 4229 6.18 $ 26,135.22
Jan 25, 2026 Jordt Raymond M Option Excercise 14600 0.00 $ 0.00
Jan 25, 2026 Jordt Raymond M Option Excercise 3855 5.50 $ 21,202.50
Jan 25, 2026 Garg Vipin K Option Excercise 42050 0.00 $ 0.00
Jan 25, 2026 Garg Vipin K Option Excercise 17984 5.50 $ 98,912.00
Jan 25, 2026 Roberts M Scot Option Excercise 14600 0.00 $ 0.00
Jan 25, 2026 Roberts M Scot Option Excercise 4373 5.50 $ 24,051.50
Jan 8, 2026 Pisano Wayne Open Market Purchase 5000 4.08 $ 20,410.00
Jan 5, 2026 Sohn Catherine A. Open Market Purchase 500 4.24 $ 2,117.55
Jan 1, 2026 Jordt Raymond M Option Excercise 9375 0.00 $ 0.00
Jan 1, 2026 Jordt Raymond M Option Excercise 2475 3.61 $ 8,934.75
Dec 29, 2025 Jorkasky Diane Open Market Purchase 527 3.80 $ 2,002.60
Dec 23, 2025 GILL JOHN Open Market Purchase 12500 4.10 $ 51,250.00
Dec 22, 2025 Durso Jerome Benedict Open Market Purchase 12500 4.13 $ 51,568.75
Nov 11, 2025 WEAVER GREGORY L Option Excercise 18750 0.00 $ 0.00
Nov 11, 2025 WEAVER GREGORY L Option Excercise 5672 4.28 $ 24,276.16
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