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. 3 different insiders made open-market purchases in the last 90 days, totalling $109.9K.
Net shares · 90d
+34.2K
34.2K buy · 0 sell
Net value · 90d
$109.9K
$109.9K in · $0 out
Sentiment · 90d
Net buying
100% buying · 0% selling
Open-market trades · 90d
3
34.2K 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
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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%
| 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 |
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.