Altimmune, Inc.
ALT- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001326190
In the last 90 days, Altimmune, Inc. insiders filed 1 open-market purchase and 0 sales; 210 institutions reported holding it in 13F filings for Q2 2026, worth $460.7M in total; Viking Global Investors is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Altimmune, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 1 filing
- 1 insider, $44.3K in total
- Open-market sells
- 0 filings
- Insiders trading
- 1
- Net value
- +$44.3K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Altimmune, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Richardson Linda M | Chief Commercial Officer | 17,174 | Sep 17, 2026 | 1 |
| Durso Jerome Benedict | President and CEO | 62,500 | Aug 13, 2026 | 6 |
| Weaver Gregory L | Chief Financial Officer | 39,831 | Aug 3, 2026 | 6 |
| Roberts M Scot | Chief Scientific Officer | 113,699 | Aug 3, 2026 | 5 |
| Sayare Mitchel | Director | – | May 1, 2026 | 2 |
| Gill John | Director | 21,700 | May 1, 2026 | 4 |
| Jorkasky Diane | Director | 527 | May 1, 2026 | 3 |
| Sohn Catherine A. | Director | 1,500 | May 1, 2026 | 3 |
| Hodges Philip | Director | – | May 1, 2026 | 2 |
| Schafer Klaus | Director | 9,179 | May 1, 2026 | 2 |
| Pisano Wayne | Director | 13,498 | May 1, 2026 | 3 |
| Lawver Teri L | Director | – | May 1, 2026 | 2 |
| Garg Vipin K | Director | 424,519 | Feb 2, 2026 | 3 |
| Jordt Raymond M | Chief Business Officer | 70,107 | Feb 2, 2026 | 4 |
| Arbet-Engels Christophe | Chief Medical Officer | – | Oct 3, 2025 | 1 |
| Harris Matthew Scott | Chief Medical Officer | 16,087 | Aug 4, 2025 | 0 |
| Drutz David | Director | 55,524Indirect | Aug 20, 2024 | 0 |
| Shutterly Andrew | Acting Chief Financial Officer | 11,372 | Aug 1, 2024 | 0 |
| Eisenstadt Richard I | Chief Financial Officer | 45,012 | Feb 1, 2024 | 0 |
| Brown William Michael | Chief Financial Officer | 17,721 | Aug 6, 2021 | 0 |
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.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 13, 2026 (view filing)4:05 PM ET | Aug 13 | Same day | Durso Jerome BenedictPresident and CEO | PPurchaseCommon Stock, par value $0.0001 | +15.0K | $2.95 | +$44.3K | +31.6%62.5K after | |
| Apr 6, 2026 (view filing) | Apr 6 | Same day | Gill JohnDirector | PPurchaseCommon Stock, par value $0.0001 | +9.20K | $3.41 | +$31.4K | +73.6%21.7K after | |
| Apr 1, 2026 (view filing) | Apr 1 | Same day | Durso Jerome BenedictPresident and CEO | PPurchaseCommon Stock, par value $0.0001 | +15.0K | $3.14 | +$47.1K | +46.2%47.5K after | |
| Apr 1, 2026 (view filing) | Apr 1 | Same day | Weaver Gregory LChief Financial Officer | PPurchaseCommon Stock, par value $0.0001 | +10.0K | $3.15 | +$31.5K | +35.6%38.1K after | |
| Mar 9, 2026 (view filing) | Mar 6 | 3 days | Durso Jerome BenedictPresident and CEO | PPurchaseCommon Stock, par value $0.0001 | +20.0K | $3.54 | +$70.8K | +160.0%32.5K after | |
| Mar 9, 2026 (view filing) | Mar 6 | 3 days | Weaver Gregory LChief Financial Officer | PPurchaseCommon Stock, par value $0.0001 | +5.00K | $3.54 | +$17.7K | +21.7%28.1K after | |
| Jan 9, 2026 (view filing) | Jan 8 | 1 day | Pisano WayneDirector | PPurchaseCommon Stock, par value $0.0001 | +5.00K | $4.08 | +$20.4K | +58.8%13.5K after | |
| Jan 5, 2026 (view filing) | Jan 5 | Same day | Sohn Catherine A.Director | PPurchaseCommon Stock, par value $0.0001 | +500 | $4.24 | +$2.12K | +50.0%1.50K after | |
| Dec 29, 2025 (view filing) | Dec 29 | Same day | Jorkasky DianeDirector | PPurchaseCommon Stock, par value $0.0001 | +527 | $3.80 | +$2.00K | New position527 after | |
| Dec 23, 2025 (view filing) | Dec 23 | Same day | Gill JohnDirector | PPurchaseCommon Stock, par value $0.0001 | +12.5K | $4.10 | +$51.3K | New position12.5K after | |
| Dec 22, 2025 (view filing) | Dec 22 | Same day | Durso Jerome BenedictDirector | PPurchaseCommon Stock, par value $0.0001 | +12.5K | $4.13 | +$51.6K | New position12.5K after | |
| Mar 18, 2025 (view filing) | Mar 17 | 1 day | Sohn Catherine A.Director | PPurchaseCommon Stock, par value $0.0001 | +1.00K | $5.78 | +$5.78K | New position1.00K after | |
| Mar 14, 2025 (view filing) | Mar 13 | 1 day | Weaver Gregory LChief Financial Officer | PPurchaseCommon Stock, par value $0.0001 | +10.0K | $5.20 | +$52.0K | New position10.0K after | |
| Aug 20, 2024 (view filing) | Aug 19 | 1 day | Drutz DavidDirector | SSaleCommon Stock, par value $0.0001 | −16.0K | $6.90 | −$110.5K | −22.4%55.5K after | 2 lots |
| Aug 15, 2023 (view filing) | Aug 15 | Same day | Drutz DavidDirector | PPurchaseCommon Stock, par value $0.0001 | +300 | $2.88 | +$864 | +1.0%29.8K after | |
| Jul 6, 2023 (view filing) | Aug 12, 2022 | 328 daysLate | Gill JohnDirector | SSaleCommon Stock, par value $0.0001 | −2.71K | $15.00 | −$40.7K | −49.5%2.77K after | |
| Mar 27, 2023 (view filing) | Mar 23 | 4 days | Drutz DavidDirector | PPurchaseCommon Stock, par value $0.0001 | +9.00K | $4.27 | +$38.4K | +43.9%29.5K after | |
| Mar 24, 2023 (view filing) | Mar 24 | Same day | Eisenstadt Richard IChief Financial Officer | PPurchaseCommon Stock, par value $0.0001 | +10.0K | $4.31 | +$43.1K | +83.3%22.0K after | |
| Mar 23, 2023 (view filing) | Mar 23 | Same day | Harris Matthew ScottChief Medical Officer | PPurchaseCommon Stock, par value $0.0001 | +10.0K | $4.22 | +$42.2K | +42.9%33.3K after | |
| Dec 22, 2022 (view filing) | Dec 22 | Same day | Pisano WayneDirector | SSaleCommon Stock, par value $0.0001 | −20.0K | $15.01 | −$300.2K | −70.2%8.50K after | |
| Sep 1, 2022 (view filing) | Aug 31 | 1 day | Garg Vipin KPresident and CEO | SSaleCommon Stock, par value $0.0001 | −20.0K | $20.02 | −$400.4K | −7.8%236.8K after | |
| Aug 12, 2022 (view filing) | Aug 12 | Same day | Garg Vipin KPresident and CEO | SSaleCommon Stock, par value $0.0001 | −15.0K | $15.06 | −$225.9K | −5.5%259.8K after | |
| Jul 5, 2022 (view filing) | Jul 1-5 | 4 days | Roberts M ScotChief Scientific Officer | SSaleCommon Stock, par value $0.0001 | −37.2K | $12.00 | −$446.0K | −81.7%8.30K after | 2 lots |
| Jun 30, 2022 (view filing) | Jun 29 | 1 day | Roberts M ScotChief Scientific Officer | SSaleCommon Stock, par value $0.0001 | −5.46K | $12.00 | −$65.5K | −23.6%17.7K after | |
| Jun 28, 2022 (view filing) | Jun 27 | 1 day | Roberts M ScotChief Scientific Officer | SSaleCommon Stock, par value $0.0001 | −37.4K | $12.00 | −$448.2K | −67.8%17.7K after | |
| Jun 28, 2022 (view filing) | Jun 27 | 1 day | Jorkasky DianeDirector | SSaleCommon Stock, par value $0.0001 | −17.6K | $11.75 | −$206.9K | −100.0%0 after | |
| Jun 16, 2022 (view filing) | Jun 15 | 1 day | Drutz DavidDirector | PPurchaseCommon Stock, par value $0.0001 | +1.00K | $8.00 | +$8.00K | +5.3%20.0K after | |
| May 25, 2022 (view filing) | May 24 | 1 day | Drutz DavidDirector | PPurchaseCommon Stock, par value $0.0001 | +1.20K | $4.50 | +$5.40K | +6.7%19.0K after | |
| Mar 2, 2022 (view filing) | Feb 28 | 2 days | Harris Matthew ScottChief Medical Officer | SSaleCommon Stock, par value $0.0001 | −30.0K | $7.52 | −$225.6K | −72.2%11.5K after |