John Gill 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 John reports to the SEC
Open-market buys and sales
5 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Apr 6, 2026 | ALT | ↑ Buy | 9,200 | $3.41 | $31K | Direct | Apr 6, 2026 (0d) |
| Dec 23, 2025 | ALT | ↑ Buy | 12,500 | $4.10 | $51K | Direct | Dec 23, 2025 (0d) |
| Aug 12, 2022 | ALT | ↓ Sell | 2,714 | $15.00 | $41K | Direct | Jul 6, 2023 (328d) |
| Nov 30, 2020 | ALT | ↓ Sell | 8,425 | $11.92 | $100K | Direct | Dec 2, 2020 (2d) |
| Jun 2, 2017 | ALT | ↑ Buy | 1,000 | $4.34 | $4K | Direct | Jun 6, 2017 (4d) |
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 John Gill's insider trades
John Gill is an insider at Altimmune (ALT). Since Jun 2, 2017, John has reported 3 open-market purchases worth $87K and 2 sales worth $141K on SEC Form 4. In the last 12 months: 2 buys ($83K).
Their filings also include grants and awards (20 filings), option exercises (3 filings), gifts (1 filing), other transactions (1 filing). 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.