ALT
Altimmune, Inc. · Healthcare · Market cap $636.1M
Insiders bought $44K net in the last 90 days ·0 sellers, 1 buyer· latest Form 4 filed Aug 13, 2026
Insider Buying
$370K
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Unique Insiders
6
in the rolling window
Latest filing
Sep 17, 2026
Durso Jerome Benedict
Altimmune, Inc. (ALT) has 26 SEC Form 4 filings (41 transaction rows) in the rolling window, disclosed by 6 distinct insiders. Most recent filing: Sep 17, 2026.
Inside the rolling window, 6 insiders at Altimmune, Inc. reported 11 open-market purchases totaling $370K and no open-market sales. The most active filer is President and CEO Durso Jerome Benedict with 4 filings. Insiders have net bought $154K over the trailing 6 months. The most recent open-market filing is a purchase of 15,000 shares by President and CEO Durso Jerome Benedict, dated Aug 13, 2026, worth $44K.
- Industry:Biotechnology
- CEO:Jerome Benedict Durso
- Employees:57
- HQ:Gaithersburg, MD, US
- IPO:2017-05-26
| Source | |||||||
|---|---|---|---|---|---|---|---|
Durso Jerome BenedictFirst in 4 months | President and CEO | Purchase | 15,000 | $44K | Aug 13 | +13.5% | SEC ↗ |
GILL JOHNFirst in 3 months | Director | Purchase | 9,200 | $31K | Apr 6 | -1.8% | SEC ↗ |
| Chief Financial Officer | Purchase | 10,000 | $31K | Apr 1 | +4.8% | SEC ↗ | |
| President and CEO | Purchase | 15,000 | $47K | Apr 1 | +4.8% | SEC ↗ | |
| President and CEO | Purchase | 20,000 | $71K | Mar 9 | -15.7% | SEC ↗ | |
WEAVER GREGORY LFirst filing | Chief Financial Officer | Purchase | 5,000 | $18K | Mar 9 | -15.7% | SEC ↗ |
Pisano WayneFirst filing | Director | Purchase | 5,000 | $20K | Jan 9 | -18.7% | SEC ↗ |
Sohn Catherine A.First filing | Director | Purchase | 500 | $2K | Jan 5 | -20.0% | SEC ↗ |
Jorkasky DianeFirst filing | Director | Purchase | 527 | $2K | Dec 29 | -11.1% | SEC ↗ |
GILL JOHNFirst filing | Director | Purchase | 12,500 | $51K | Dec 23 | -18.3% | SEC ↗ |
Durso Jerome BenedictFirst filing | Director | Purchase | 12,500 | $52K | Dec 22 | — | SEC ↗ |
Frequently asked questions
How many SEC Form 4 insider filings does ALT have?
Altimmune, Inc. (ALT) has 26 SEC Form 4 filings (41 transaction rows) in the rolling 365-day window, disclosed by 6 distinct insiders. Most recent filing: Sep 17, 2026.
When was the most recent SEC Form 4 filing for ALT?
The most recent Form 4 filing for ALT on Tracefour is dated Sep 17, 2026.
Who is the most active insider at ALT?
The most active SEC Form 4 filer at ALT in the rolling window is President and CEO Durso Jerome Benedict, with 4 filings.
What is the net insider flow at ALT over the last 6 months?
Over the trailing 180 days, insiders at ALT have net bought $154K based on SEC Form 4 disclosures.
What is the total insider buy and sell value at ALT in the current window?
Inside the rolling window, insiders at ALT bought $370K and sold $0 based on SEC Form 4 filings.
Can I get alerts for ALT insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Altimmune, Inc. (ALT). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Altimmune, Inc. is in the Healthcare sector.