Company profile
Altimmune, Inc. Insider Trading
ALTEvery SEC Form 4 insider trading filing for Altimmune, Inc. (ALT) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001326190
- Filings
- 108
- Insiders
- 19
- Last filing
- 2026-08-13
Activity summary
Recent insider activity is bullish. Over the last 30 days, 3 insiders purchased shares (net $51K). Buying was led by Durso Jerome Benedict.
Three year balance
Buy and sell value by quarter, Q3 22 to Q3 26. Altimmune, Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $522K.
90 day insight
Over the last 90 days, Altimmune, Inc. insiders bought $51K across 3 transactions with no open-market sales.
- Most active insider: Durso Jerome Benedict with 1 transaction totaling $44K.
- Largest single purchase: $44K by Durso Jerome Benedict on Aug 13, 2026.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 13, 2026 | Durso Jerome Benedict | ALT | Purchase | 15,000 | $2.95 | $44K |
| Jul 31, 2026 | Weaver Gregory L | ALT | Award | 1,753 | $2.41 | $4K |
| Jul 31, 2026 | Roberts M Scot | ALT | Award | 875 | $2.41 | $2K |
| May 1, 2026 | Lawver Teri L | ALT | Award | 48,800 | — | — |
| May 1, 2026 | Jorkasky Diane | ALT | Award | 48,800 | — | — |
45 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Altimmune, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →