ALT
insider transactionsAltimmune, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 5 different insiders made open-market purchases in the last 365 days, totalling $221.0K.
Net shares · 365d
+64.7K
64.7K buy · 0 sell
Net value · 365d
$221.0K
$221.0K in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
7
64.7K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Grant·A
Director
$0
48.8K sh
Own New
-
Buy·P
Director
$31.3K
9.2K sh · $3.41
Own +74%
-
Buy·P
President and CEO
$47.1K
15.0K sh · $3.14
Own +46%
-
Buy·P
Gregory L Weaver KEY
Chief Financial Officer
$31.5K
10.0K sh · $3.15
Own +36%
-
Buy·P
President and CEO
$70.8K
20.0K sh · $3.54
Own +160%
-
Buy·P
Gregory L Weaver KEY
Chief Financial Officer
$17.7K
5.0K sh · $3.54
Own +22%
-
Grant·A
Chief Scientific Officer
$0
95.4K sh
Own New
-
Grant·A
Chief Scientific Officer
$0
222.7K sh
Own New
-
Grant·A
Gregory L Weaver KEY
Chief Financial Officer
$0
111.0K sh
Own New
-
Grant·A
Gregory L Weaver KEY
Chief Financial Officer
$0
259.0K sh
Own New
-
Exercise·M
Chief Scientific Officer
$0
7.8K sh
Own New
-
Other·F
Chief Scientific Officer
$12.9K
2.3K sh · $5.55
Own -2%
-
Exercise·M
Chief Scientific Officer
$0
7.8K sh
Own +7%
-
Grant·A
Chief Business Officer
$14.0K
4.6K sh · $3.07
Own +7%
-
Grant·A
Director
$21.3K
6.9K sh · $3.07
Own +2%
-
Grant·A
Chief Scientific Officer
$17.1K
5.6K sh · $3.07
Own +5%
-
Exercise·M
Director
$0
26.8K sh
Own New
-
Other·F
Director
$65.1K
11.6K sh · $5.60
Own -3%
-
Exercise·M
Director
$0
26.8K sh
Own +7%
-
Exercise·M
Chief Scientific Officer
$0
9.3K sh
Own New
-
Other·F
Chief Scientific Officer
$16.0K
2.9K sh · $5.60
Own -3%
-
Exercise·M
Chief Scientific Officer
$0
9.3K sh
Own +10%
-
Exercise·M
Chief Business Officer
$0
15.8K sh
Own +50%
-
Other·F
Chief Business Officer
$26.1K
4.2K sh · $6.18
Own -6%
-
Exercise·M
Chief Business Officer
$0
15.8K sh
Own +29%
-
Exercise·M
Chief Scientific Officer
$0
15.8K sh
Own +50%
-
Other·F
Chief Scientific Officer
$29.3K
4.7K sh · $6.18
Own -5%
-
Exercise·M
Chief Scientific Officer
$0
15.8K sh
Own +19%
-
Exercise·M
Director
$0
41.2K sh
Own +50%
-
Other·F
Director
$110.6K
17.9K sh · $6.18
Own -4%
-
Exercise·M
Director
$0
41.2K sh
Own +11%
-
Exercise·M
Chief Business Officer
$0
14.6K sh
Own +100%
-
Other·F
Chief Business Officer
$21.2K
3.9K sh · $5.50
Own -7%
-
Exercise·M
Chief Business Officer
$0
14.6K sh
Own +34%
-
Exercise·M
Chief Scientific Officer
$0
14.6K sh
Own +100%
-
Other·F
Chief Scientific Officer
$24.1K
4.4K sh · $5.50
Own -5%
-
Exercise·M
Chief Scientific Officer
$0
14.6K sh
Own +20%
-
Exercise·M
Director
$0
42.0K sh
Own +100%
-
Other·F
Director
$98.9K
18.0K sh · $5.50
Own -5%
-
Exercise·M
Director
$0
42.0K sh
Own +12%
-
Buy·P
Director
$20.4K
5.0K sh · $4.08
Own +59%
-
Buy·P
Director
$2.1K
500 sh · $4.24
Own +50%
-
Exercise·M
Chief Business Officer
$0
9.4K sh
Own New
-
Other·F
Chief Business Officer
$8.9K
2.5K sh · $3.61
Own -5%
-
Exercise·M
Chief Business Officer
$0
9.4K sh
Own +26%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 1, 2026 | Teri L Lawver | Grant A | 48.8K | $0 |
| May 1, 2026 | Wayne Pisano | Grant A | 48.8K | $0 |
| May 1, 2026 | Klaus Schafer | Grant A | 48.8K | $0 |
| May 1, 2026 | Philip Hodges | Grant A | 48.8K | $0 |
| May 1, 2026 | Catherine A. Sohn | Grant A | 48.8K | $0 |
| May 1, 2026 | Diane Jorkasky | Grant A | 48.8K | $0 |
| May 1, 2026 | John Gill | Grant A | 48.8K | $0 |
| May 1, 2026 | Mitchel Sayare | Grant A | 48.8K | $0 |
| Apr 6, 2026 | John Gill | Buy P | 9.2K | $31.3K |
| Apr 1, 2026 | Jerome Benedict Durso KEY | Buy P | 15.0K | $47.1K |
| Apr 1, 2026 | Gregory L Weaver KEY | Buy P | 10.0K | $31.5K |
| Mar 6, 2026 | Jerome Benedict Durso KEY | Buy P | 20.0K | $70.8K |
| Mar 6, 2026 | Gregory L Weaver KEY | Buy P | 5.0K | $17.7K |
| Feb 26, 2026 | Scot M Roberts | Grant A | 95.4K | $0 |
| Feb 26, 2026 | Scot M Roberts | Grant A | 222.7K | $0 |
| Feb 26, 2026 | Gregory L Weaver KEY | Grant A | 111.0K | $0 |
| Feb 26, 2026 | Gregory L Weaver KEY | Grant A | 259.0K | $0 |
| Feb 2, 2026 | Scot M Roberts | Exercise M | 7.8K | $0 |
| Feb 2, 2026 | Scot M Roberts | Other F | 2.3K | $12.9K |
| Feb 2, 2026 | Scot M Roberts | Exercise M | 7.8K | $0 |
| Jan 31, 2026 | Raymond M Jordt | Grant A | 4.6K | $14.0K |
| Jan 31, 2026 | Vipin K Garg | Grant A | 6.9K | $21.3K |
| Jan 31, 2026 | Scot M Roberts | Grant A | 5.6K | $17.1K |
| Jan 30, 2026 | Vipin K Garg | Exercise M | 26.8K | $0 |
| Jan 30, 2026 | Vipin K Garg | Other F | 11.6K | $65.1K |
| Jan 30, 2026 | Vipin K Garg | Exercise M | 26.8K | $0 |
| Jan 30, 2026 | Scot M Roberts | Exercise M | 9.3K | $0 |
| Jan 30, 2026 | Scot M Roberts | Other F | 2.9K | $16.0K |
| Jan 30, 2026 | Scot M Roberts | Exercise M | 9.3K | $0 |
| Jan 27, 2026 | Raymond M Jordt | Exercise M | 15.8K | $0 |
| Jan 27, 2026 | Raymond M Jordt | Other F | 4.2K | $26.1K |
| Jan 27, 2026 | Raymond M Jordt | Exercise M | 15.8K | $0 |
| Jan 27, 2026 | Scot M Roberts | Exercise M | 15.8K | $0 |
| Jan 27, 2026 | Scot M Roberts | Other F | 4.7K | $29.3K |
| Jan 27, 2026 | Scot M Roberts | Exercise M | 15.8K | $0 |
| Jan 27, 2026 | Vipin K Garg | Exercise M | 41.2K | $0 |
| Jan 27, 2026 | Vipin K Garg | Other F | 17.9K | $110.6K |
| Jan 27, 2026 | Vipin K Garg | Exercise M | 41.2K | $0 |
| Jan 25, 2026 | Raymond M Jordt | Exercise M | 14.6K | $0 |
| Jan 25, 2026 | Raymond M Jordt | Other F | 3.9K | $21.2K |
| Jan 25, 2026 | Raymond M Jordt | Exercise M | 14.6K | $0 |
| Jan 25, 2026 | Scot M Roberts | Exercise M | 14.6K | $0 |
| Jan 25, 2026 | Scot M Roberts | Other F | 4.4K | $24.1K |
| Jan 25, 2026 | Scot M Roberts | Exercise M | 14.6K | $0 |
| Jan 25, 2026 | Vipin K Garg | Exercise M | 42.0K | $0 |
| Jan 25, 2026 | Vipin K Garg | Other F | 18.0K | $98.9K |
| Jan 25, 2026 | Vipin K Garg | Exercise M | 42.0K | $0 |
| Jan 8, 2026 | Wayne Pisano | Buy P | 5.0K | $20.4K |
| Jan 5, 2026 | Catherine A. Sohn | Buy P | 500 | $2.1K |
| Jan 1, 2026 | Raymond M Jordt | Exercise M | 9.4K | $0 |
| Jan 1, 2026 | Raymond M Jordt | Other F | 2.5K | $8.9K |
| Jan 1, 2026 | Raymond M Jordt | Exercise M | 9.4K | $0 |
About ALT insider trading
This page tracks insider transactions for Altimmune, Inc. (ALT) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.