Gregory L Weaver insider trades: Altimmune (ALT) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Gregory reports to the SEC
and 7 more companies
Open-market buys and sales
18 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Apr 1, 2026 | ALT | ↑ Buy | 10,000 | $3.15 | $31K | Direct | Apr 1, 2026 (0d) |
| Mar 6, 2026 | ALT | ↑ Buy | 5,000 | $3.54 | $18K | Direct | Mar 9, 2026 (3d) |
| Mar 13, 2025 | ALT | ↑ Buy | 10,000 | $5.20 | $52K | Direct | Mar 14, 2025 (1d) |
| Nov 15, 2023 | ATOS | ↓ Sell | 50,000 | $0.65 | $33K | Direct | Nov 17, 2023 (2d) |
| Jun 20, 2023 | ATOS | ↑ Buy | 50,000 | $0.97 | $49K | Direct | Jun 20, 2023 (0d) |
| Jul 2, 2021 | ATOS | ↓ Sell | 107,497 | $5.58 | $600K | Direct | Jul 7, 2021 (5d) |
| Jun 22, 2021 | ATAI | ↑ Buy | 4,666 | $15.00 | $70K | Direct | Jun 24, 2021 (2d) |
| Mar 23, 2018 | ELOX | ↑ Buy | 4,500 | $8.56 | $39K | Direct | Mar 26, 2018 (3d) |
| Nov 21, 2013 | ATOS | ↑ Buy | 10,000 | $2.58 | $26K | Direct | Nov 22, 2013 (1d) |
| Nov 20, 2013 | FCSC | ↑ Buy | 10,000 | $3.51 | $35K | Direct | Nov 20, 2013 (0d) |
| Mar 19, 2013 | CLSN | ↓ Sell | 37,272 | $1.06 | $40K | Direct | Mar 21, 2013 (2d) |
| Dec 6, 2011 | CLSN | ↑ Buy | 5,000 | $2.15 | $11K | Direct | Dec 7, 2011 (1d) |
| May 26, 2011 | CLSN | ↑ Buy | 8,636 | $2.77 | $24K | Direct | May 31, 2011 (5d) |
| Sep 16, 2010 | CLSN | ↑ Buy | 5,000 | $3.10 | $16K | Direct | Sep 16, 2010 (0d) |
| Aug 21, 2009 | PARD | ↑ Buy | 3,000 | $7.39 | $22K | Direct | Aug 21, 2009 (0d) |
| Apr 6, 2009 | PARD | ↑ Buy | 2,000 | $2.07 | $4K | Direct | Apr 6, 2009 (0d) |
| Feb 23, 2007 | CLN | ↑ Buy | 10,000 | $3.50 | $35K | Direct | Feb 27, 2007 (4d) |
| May 25, 2006 | RNAI | ↑ Buy | 15,000 | $5.06 | $76K | Direct | May 25, 2006 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ALT insiders
Open-market trades in the last 12 months
About Gregory L Weaver's insider trades
Gregory L Weaver is Chief Financial Officer at Altimmune (ALT). Since May 25, 2006, Gregory has reported 15 open-market purchases worth $506K and 3 sales worth $672K on SEC Form 4. In the last 12 months: 2 buys ($49K).
Their filings also include grants and awards (44 filings), option exercises (6 filings), shares withheld for taxes (5 filings), shares returned to the company (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ALT insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.