ALT
Altimmune, Inc.$2.79-0.01 (-0.54%)Prev Close$2.80·MCap$251.1M·P/E—·Vol1.46M·Yield—
▲
Buys (12M)
11
$348.3K
▼
Sells (12M)
10
$437.5K
◆
Net Activity
Net Seller
$89.2K
●
Active Insiders
10
last 12 mo
Over the past 12 months, insider activity at Altimmune, Inc. (ALT) has been mixed between buying and selling, with 11 insider purchases totaling $348.3K and 10 insider sales totaling $437.5K. The most recent insider transaction was by GILL JOHN (director), who purchased $31.3K worth of shares on Apr 6, 2026. Altimmune, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $251.1M.
ALT Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 6, 2026 | GILL JOHN | director | Buy | 9,200 | $3.41 | $31.3K | 21,700+74% |
| Apr 1, 2026 | Durso Jerome Benedict | director, officer: President and CEO | Buy | 15,000 | $3.14 | $47.1K | 47,500+46% |
| Apr 1, 2026 | WEAVER GREGORY L | officer: Chief Financial Officer | Buy | 10,000 | $3.15 | $31.5K | 38,078+36% |
| Mar 9, 2026 | Durso Jerome Benedict | director, officer: President and CEO | Buy | 20,000 | $3.54 | $70.8K | 32,500+160% |
| Mar 9, 2026 | WEAVER GREGORY L | officer: Chief Financial Officer | Buy | 5,000 | $3.54 | $17.7K | 28,078 |
| Jan 30, 2026 | Garg Vipin K | Director | Sell | 11,632 | $5.60 | $65.1K | 0 |
| Jan 30, 2026 | Roberts M Scot | Chief Scientific Officer | Sell | 5,188 | $5.58 | $28.9K | 0 |
| Jan 27, 2026 | Garg Vipin K | Director | Sell | 17,898 | $6.18 | $110.6K | 0 |
| Jan 27, 2026 | Jordt Raymond M | Chief Business Officer | Sell | 4,229 | $6.18 | $26.1K | 0 |
| Jan 27, 2026 | Roberts M Scot | Chief Scientific Officer | Sell | 4,748 | $6.18 | $29.3K | 0 |
| Jan 25, 2026 | Jordt Raymond M | Chief Business Officer | Sell | 3,855 | $5.50 | $21.2K | 0 |
| Jan 25, 2026 | Roberts M Scot | Chief Scientific Officer | Sell | 4,373 | $5.50 | $24.1K | 0 |
| Jan 25, 2026 | Garg Vipin K | Director | Sell | 17,984 | $5.50 | $98.9K | 0 |
| Jan 9, 2026 | Pisano Wayne | director | Buy | 5,000 | $4.08 | $20.4K | 13,498+59% |
| Jan 8, 2026 | Pisano Wayne | Director | Buy | 5,000 | $4.08 | $20.4K | 0 |
| Jan 5, 2026 | Sohn Catherine A. | Director | Buy | 1,000 | $4.24 | $4.2K | 1,500+200% |
| Jan 1, 2026 | Jordt Raymond M | Chief Business Officer | Sell | 2,475 | $3.61 | $8.9K | 0 |
| Dec 29, 2025 | Jorkasky Diane | Director | Buy | 527 | $3.80 | $2.0K | 0 |
| Dec 23, 2025 | GILL JOHN | Director | Buy | 12,500 | $4.10 | $51.3K | 0 |
| Dec 22, 2025 | Durso Jerome Benedict | Director | Buy | 12,500 | $4.13 | $51.6K | 0 |
| Nov 11, 2025 | WEAVER GREGORY L | Chief Financial Officer | Sell | 5,672 | $4.28 | $24.3K | 0 |
| Mar 17, 2025 | Sohn Catherine A. | Director | Buy | 1,000 | $5.78 | $5.8K | 0 |
| Mar 13, 2025 | WEAVER GREGORY L | Chief Financial Officer | Buy | 10,000 | $5.20 | $52.0K | 0 |
| Jan 30, 2025 | Garg Vipin K | President and CEO | Sell | 27,214 | $6.79 | $184.9K | 0 |
| Jan 30, 2025 | Harris Matthew Scott | Chief Medical Officer | Sell | 7,990 | $6.78 | $54.2K | 0 |
| Jan 30, 2025 | Roberts M Scot | Chief Scientific Officer | Sell | 6,826 | $6.78 | $46.3K | 0 |
| Jan 25, 2025 | Garg Vipin K | President and CEO | Sell | 18,157 | $6.98 | $126.7K | 0 |
| Jan 25, 2025 | Harris Matthew Scott | Chief Medical Officer | Sell | 4,994 | $6.98 | $34.9K | 0 |
| Jan 25, 2025 | Jordt Raymond M | Chief Business Officer | Sell | 3,862 | $6.98 | $27.0K | 0 |
| Jan 25, 2025 | Roberts M Scot | Chief Scientific Officer | Sell | 4,264 | $6.98 | $29.8K | 0 |
| Jan 1, 2025 | Jordt Raymond M | Chief Business Officer | Sell | 2,485 | $7.21 | $17.9K | 0 |
| Aug 19, 2024 | Drutz David | Director | Sell | 16,011 | $6.90 | $110.5K | 0 |
| Feb 1, 2024 | Garg Vipin K | President and CEO | Sell | 15,689 | $9.58 | $150.3K | 0 |
| Feb 1, 2024 | Harris Matthew Scott | Chief Medical Officer | Sell | 2,332 | $9.32 | $21.7K | 0 |
| Feb 1, 2024 | Roberts M Scot | Chief Scientific Officer | Sell | 4,131 | $9.56 | $39.5K | 0 |
| Jan 30, 2024 | Garg Vipin K | President and CEO | Sell | 11,697 | $9.80 | $114.6K | 0 |
| Jan 30, 2024 | Eisenstadt Richard I | Chief Financial Officer | Sell | 2,175 | $9.80 | $21.3K | 0 |
| Jan 30, 2024 | Roberts M Scot | Chief Scientific Officer | Sell | 2,709 | $9.80 | $26.5K | 0 |
| Jan 1, 2024 | Jordt Raymond M | Chief Business Officer | Sell | 2,503 | $11.25 | $28.2K | 0 |
| Dec 29, 2023 | Eisenstadt Richard I | Chief Financial Officer | Sell | 3,044 | $11.25 | $34.2K | 0 |
| Aug 15, 2023 | Drutz David | Director | Buy | 300 | $2.88 | $862.50 | 0 |
| Mar 24, 2023 | Eisenstadt Richard I | Chief Financial Officer | Buy | 10,000 | $4.31 | $43.1K | 0 |
| Mar 23, 2023 | Drutz David | Director | Buy | 9,000 | $4.27 | $38.4K | 0 |
| Mar 23, 2023 | Harris Matthew Scott | Chief Medical Officer | Buy | 10,000 | $4.22 | $42.2K | 0 |
| Feb 2, 2023 | Garg Vipin K | President and CEO | Sell | 8,422 | $15.04 | $126.7K | 0 |
| Feb 2, 2023 | Harris Matthew Scott | Chief Medical Officer | Sell | 2,364 | $15.04 | $35.6K | 0 |
| Feb 2, 2023 | Roberts M Scot | Chief Scientific Officer | Sell | 2,375 | $15.04 | $35.7K | 0 |
| Jan 31, 2023 | Garg Vipin K | President and CEO | Sell | 7,658 | $13.78 | $105.5K | 0 |
| Jan 31, 2023 | Roberts M Scot | Chief Scientific Officer | Sell | 2,183 | $13.78 | $30.1K | 0 |
| Dec 31, 2022 | Eisenstadt Richard I | Chief Financial Officer | Sell | 3,028 | $16.45 | $49.8K | 0 |
Showing 1–50 of 85
1 / 2
ALT Insider Buying Activity
The following table shows recent insider purchases of Altimmune, Inc. (ALT) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Apr 6, 2026 | GILL JOHN | director | Buy | 9,200 | $3.41 | $31.3K | 21,700+74% |
| Apr 1, 2026 | Durso Jerome Benedict | director, officer: President and CEO | Buy | 15,000 | $3.14 | $47.1K | 47,500+46% |
| Apr 1, 2026 | WEAVER GREGORY L | officer: Chief Financial Officer | Buy | 10,000 | $3.15 | $31.5K | 38,078+36% |
| Mar 9, 2026 | Durso Jerome Benedict | director, officer: President and CEO | Buy | 20,000 | $3.54 | $70.8K | 32,500+160% |
| Mar 9, 2026 | WEAVER GREGORY L | officer: Chief Financial Officer | Buy | 5,000 | $3.54 | $17.7K | 28,078 |
| Jan 9, 2026 | Pisano Wayne | director | Buy | 5,000 | $4.08 | $20.4K | 13,498+59% |
| Jan 8, 2026 | Pisano Wayne | Director | Buy | 5,000 | $4.08 | $20.4K | 0 |
| Jan 5, 2026 | Sohn Catherine A. | Director | Buy | 1,000 | $4.24 | $4.2K | 1,500+200% |
| Dec 29, 2025 | Jorkasky Diane | Director | Buy | 527 | $3.80 | $2.0K | 0 |
| Dec 23, 2025 | GILL JOHN | Director | Buy | 12,500 | $4.10 | $51.3K | 0 |
| Dec 22, 2025 | Durso Jerome Benedict | Director | Buy | 12,500 | $4.13 | $51.6K | 0 |
| Mar 17, 2025 | Sohn Catherine A. | Director | Buy | 1,000 | $5.78 | $5.8K | 0 |
| Mar 13, 2025 | WEAVER GREGORY L | Chief Financial Officer | Buy | 10,000 | $5.20 | $52.0K | 0 |
| Aug 15, 2023 | Drutz David | Director | Buy | 300 | $2.88 | $862.50 | 0 |
| Mar 24, 2023 | Eisenstadt Richard I | Chief Financial Officer | Buy | 10,000 | $4.31 | $43.1K | 0 |
| Mar 23, 2023 | Drutz David | Director | Buy | 9,000 | $4.27 | $38.4K | 0 |
| Mar 23, 2023 | Harris Matthew Scott | Chief Medical Officer | Buy | 10,000 | $4.22 | $42.2K | 0 |
ALT Insider Selling Activity
The following table shows recent insider sales of Altimmune, Inc. (ALT) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jan 30, 2026 | Garg Vipin K | Director | Sell | 11,632 | $5.60 | $65.1K | 0 |
| Jan 30, 2026 | Roberts M Scot | Chief Scientific Officer | Sell | 5,188 | $5.58 | $28.9K | 0 |
| Jan 27, 2026 | Garg Vipin K | Director | Sell | 17,898 | $6.18 | $110.6K | 0 |
| Jan 27, 2026 | Jordt Raymond M | Chief Business Officer | Sell | 4,229 | $6.18 | $26.1K | 0 |
| Jan 27, 2026 | Roberts M Scot | Chief Scientific Officer | Sell | 4,748 | $6.18 | $29.3K | 0 |
| Jan 25, 2026 | Jordt Raymond M | Chief Business Officer | Sell | 3,855 | $5.50 | $21.2K | 0 |
| Jan 25, 2026 | Roberts M Scot | Chief Scientific Officer | Sell | 4,373 | $5.50 | $24.1K | 0 |
| Jan 25, 2026 | Garg Vipin K | Director | Sell | 17,984 | $5.50 | $98.9K | 0 |
| Jan 1, 2026 | Jordt Raymond M | Chief Business Officer | Sell | 2,475 | $3.61 | $8.9K | 0 |
| Nov 11, 2025 | WEAVER GREGORY L | Chief Financial Officer | Sell | 5,672 | $4.28 | $24.3K | 0 |
| Jan 30, 2025 | Garg Vipin K | President and CEO | Sell | 27,214 | $6.79 | $184.9K | 0 |
| Jan 30, 2025 | Harris Matthew Scott | Chief Medical Officer | Sell | 7,990 | $6.78 | $54.2K | 0 |
| Jan 30, 2025 | Roberts M Scot | Chief Scientific Officer | Sell | 6,826 | $6.78 | $46.3K | 0 |
| Jan 25, 2025 | Garg Vipin K | President and CEO | Sell | 18,157 | $6.98 | $126.7K | 0 |
| Jan 25, 2025 | Harris Matthew Scott | Chief Medical Officer | Sell | 4,994 | $6.98 | $34.9K | 0 |
| Jan 25, 2025 | Jordt Raymond M | Chief Business Officer | Sell | 3,862 | $6.98 | $27.0K | 0 |
| Jan 25, 2025 | Roberts M Scot | Chief Scientific Officer | Sell | 4,264 | $6.98 | $29.8K | 0 |
| Jan 1, 2025 | Jordt Raymond M | Chief Business Officer | Sell | 2,485 | $7.21 | $17.9K | 0 |
| Aug 19, 2024 | Drutz David | Director | Sell | 16,011 | $6.90 | $110.5K | 0 |
| Feb 1, 2024 | Garg Vipin K | President and CEO | Sell | 15,689 | $9.58 | $150.3K | 0 |
| Feb 1, 2024 | Harris Matthew Scott | Chief Medical Officer | Sell | 2,332 | $9.32 | $21.7K | 0 |
| Feb 1, 2024 | Roberts M Scot | Chief Scientific Officer | Sell | 4,131 | $9.56 | $39.5K | 0 |
| Jan 30, 2024 | Garg Vipin K | President and CEO | Sell | 11,697 | $9.80 | $114.6K | 0 |
| Jan 30, 2024 | Eisenstadt Richard I | Chief Financial Officer | Sell | 2,175 | $9.80 | $21.3K | 0 |
| Jan 30, 2024 | Roberts M Scot | Chief Scientific Officer | Sell | 2,709 | $9.80 | $26.5K | 0 |
| Jan 1, 2024 | Jordt Raymond M | Chief Business Officer | Sell | 2,503 | $11.25 | $28.2K | 0 |
| Dec 29, 2023 | Eisenstadt Richard I | Chief Financial Officer | Sell | 3,044 | $11.25 | $34.2K | 0 |
| Feb 2, 2023 | Garg Vipin K | President and CEO | Sell | 8,422 | $15.04 | $126.7K | 0 |
| Feb 2, 2023 | Harris Matthew Scott | Chief Medical Officer | Sell | 2,364 | $15.04 | $35.6K | 0 |
| Feb 2, 2023 | Roberts M Scot | Chief Scientific Officer | Sell | 2,375 | $15.04 | $35.7K | 0 |
| Jan 31, 2023 | Garg Vipin K | President and CEO | Sell | 7,658 | $13.78 | $105.5K | 0 |
| Jan 31, 2023 | Roberts M Scot | Chief Scientific Officer | Sell | 2,183 | $13.78 | $30.1K | 0 |
| Dec 31, 2022 | Eisenstadt Richard I | Chief Financial Officer | Sell | 3,028 | $16.45 | $49.8K | 0 |
ALT Insiders
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