Altimmune, Inc. (ALT) insider trading.
In Q3 2026, insiders at Altimmune, Inc. reported 5 non-derivative transactions on 4 Forms 3, 4 and 5: 1 open-market purchase worth $44K and 0 sales.
- Transactions
- 5
- Purchases (P)
- 1
- Sales (S)
- 0
- Net shares, P minus S
- 15,000
- Insiders
- 4
- Last filed
- 2026-09-17
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Richardson Linda M | Officer · Chief Commercial Officer | 2 | 0 | 0 |
| Durso Jerome Benedict | Director, Officer · President and CEO | 1 | 1 | 0 |
| Weaver Gregory L | Officer · Chief Financial Officer | 1 | 0 | 0 |
| Roberts M Scot | Officer · Chief Scientific Officer | 1 | 0 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-16 | Richardson Linda M | F (D) | 6,826 | $3.24 | 17,174 | Form 4 |
| 2026-09-16 | Richardson Linda M | M (A) | 24,000 | $0 | 24,000 | Form 4 |
| 2026-08-13 | Durso Jerome Benedict | P (A) | 15,000 | $2.95 | 62,500 | Form 4 |
| 2026-07-31 | Weaver Gregory L | A (A) | 1,753 | $2.41 | 39,831 | Form 4 |
| 2026-07-31 | Roberts M Scot | A (A) | 875 | $2.41 | 113,699 | Form 4 |
Transaction codes in this quarter
Get ALT insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=1326190&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · ALT company page · Altimmune, Inc. on SEC.gov
Questions
Are insiders buying or selling Altimmune, Inc. (ALT)?
In Q3 2026, insiders at Altimmune, Inc. reported 5 non-derivative transactions on 4 Forms 3, 4 and 5: 1 open-market purchase worth $44K and 0 sales. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Altimmune, Inc. insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/alt.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.