ALT
Altimmune Inc
NASDAQ: ALT · HEALTHCARE · BIOTECHNOLOGY
$2.10
+2.94% today
Updated 2026-10-28
Market cap
$427.94M
P/E ratio
—
P/S ratio
13,804.48x
EPS (TTM)
$-0.76
Dividend yield
—
52W range
$2 – $6
Volume
4.0M
Altimmune Inc (ALT) Insider transactions
Net insider activity
Net buying (5,456,514 shares)
Buy transactions
69
Sell transactions
25
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-01 | WEAVER, GREGORY L | Chief Financial Officer | M | 14,475 | — | — |
| 2026-10-01 | WEAVER, GREGORY L | Chief Financial Officer | M | 14,475 | — | — |
| 2026-10-01 | WEAVER, GREGORY L | Chief Financial Officer | F | 4,379 | $2.76 | $12086.04 |
| 2026-10-01 | MENZIUSO, RICHARD THOMAS | Principal Accounting Officer | Buy | 84,546 | — | — |
| 2026-10-01 | MENZIUSO, RICHARD THOMAS | Principal Accounting Officer | Buy | 36,234 | — | — |
| 2026-10-01 | ARBET-ENGELS, CHRISTOPHE | Chief Medical Officer | M | 37,500 | — | — |
| 2026-10-01 | ARBET-ENGELS, CHRISTOPHE | Chief Medical Officer | M | 37,500 | — | — |
| 2026-10-01 | ARBET-ENGELS, CHRISTOPHE | Chief Medical Officer | F | 12,679 | $2.76 | $34994.04 |
| 2026-09-16 | RICHARDSON, LINDA M | Chief Commercial Officer | Sale | 24,000 | — | — |
| 2026-09-16 | RICHARDSON, LINDA M | Chief Commercial Officer | Buy | 24,000 | — | — |
| 2026-09-16 | RICHARDSON, LINDA M | Chief Commercial Officer | Sale | 6,826 | $3.24 | $22116.24 |
| 2026-08-13 | DURSO, JEROME BENEDICT | Director, President and CEO | Buy | 15,000 | $2.95 | $44250.00 |
| 2026-07-31 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 1,753 | $2.41 | $4231.74 |
| 2026-07-31 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 875 | $2.41 | $2112.25 |
| 2026-05-01 | SOHN, CATHERINE A. | Director | Buy | 48,800 | — | — |
| 2026-05-01 | SCHAFER, KLAUS | Director | Buy | 48,800 | — | — |
| 2026-05-01 | SAYARE, MITCHEL | Director | Buy | 48,800 | — | — |
| 2026-05-01 | PISANO, WAYNE | Director | Buy | 48,800 | — | — |
| 2026-05-01 | LAWVER, TERI L | Director | Buy | 48,800 | — | — |
| 2026-05-01 | JORKASKY, DIANE | Director | Buy | 48,800 | — | — |
| 2026-05-01 | HODGES, PHILIP | Director | Buy | 48,800 | — | — |
| 2026-05-01 | GILL, JOHN | Director | Buy | 48,800 | — | — |
| 2026-04-06 | GILL, JOHN | Director | Buy | 9,200 | $3.41 | $31349.92 |
| 2026-04-01 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 10,000 | $3.15 | $31499.00 |
| 2026-04-01 | DURSO, JEROME BENEDICT | Director, President and CEO | Buy | 15,000 | $3.14 | $47100.00 |
| 2026-03-06 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 5,000 | $3.54 | $17700.00 |
| 2026-03-06 | DURSO, JEROME BENEDICT | Director, President and CEO | Buy | 20,000 | $3.54 | $70790.00 |
| 2026-02-26 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 259,000 | — | — |
| 2026-02-26 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 111,000 | — | — |
| 2026-02-26 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 222,670 | — | — |
| 2026-02-26 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 95,430 | — | — |
| 2026-02-02 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 7,775 | — | — |
| 2026-02-02 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 7,775 | — | — |
| 2026-02-02 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 2,329 | $5.55 | $12925.95 |
| 2026-01-31 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 5,567 | $3.07 | $17090.69 |
| 2026-01-31 | JORDT, RAYMOND M | Chief Business Officer | Buy | 4,571 | $3.07 | $14032.97 |
| 2026-01-31 | GARG, VIPIN K | Director | Buy | 6,926 | $3.07 | $21262.82 |
| 2026-01-30 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 9,275 | — | — |
| 2026-01-30 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 9,275 | — | — |
| 2026-01-30 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 2,859 | $5.60 | $16010.40 |
| 2026-01-30 | GARG, VIPIN K | Director | Sale | 26,775 | — | — |
| 2026-01-30 | GARG, VIPIN K | Director | Buy | 26,775 | — | — |
| 2026-01-30 | GARG, VIPIN K | Director | Sale | 11,632 | $5.60 | $65139.20 |
| 2026-01-27 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 15,850 | — | — |
| 2026-01-27 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 15,850 | — | — |
| 2026-01-27 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 4,748 | $6.18 | $29342.64 |
| 2026-01-27 | JORDT, RAYMOND M | Chief Business Officer | Sale | 15,850 | — | — |
| 2026-01-27 | JORDT, RAYMOND M | Chief Business Officer | Buy | 15,850 | — | — |
| 2026-01-27 | JORDT, RAYMOND M | Chief Business Officer | Sale | 4,229 | $6.18 | $26135.22 |
| 2026-01-27 | GARG, VIPIN K | Director | Sale | 41,200 | — | — |
| 2026-01-27 | GARG, VIPIN K | Director | Buy | 41,200 | — | — |
| 2026-01-27 | GARG, VIPIN K | Director | Sale | 17,898 | $6.18 | $110609.64 |
| 2026-01-25 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 14,600 | — | — |
| 2026-01-25 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 14,600 | — | — |
| 2026-01-25 | ROBERTS, M SCOT | Chief Scientific Officer | Sale | 4,373 | $5.50 | $24051.50 |
| 2026-01-25 | JORDT, RAYMOND M | Chief Business Officer | Sale | 14,600 | — | — |
| 2026-01-25 | JORDT, RAYMOND M | Chief Business Officer | Buy | 14,600 | — | — |
| 2026-01-25 | JORDT, RAYMOND M | Chief Business Officer | Sale | 3,855 | $5.50 | $21202.50 |
| 2026-01-25 | GARG, VIPIN K | Director | Sale | 42,050 | — | — |
| 2026-01-25 | GARG, VIPIN K | Director | Buy | 42,050 | — | — |
| 2026-01-25 | GARG, VIPIN K | Director | Sale | 17,984 | $5.50 | $98912.00 |
| 2026-01-08 | PISANO, WAYNE | Director | Buy | 5,000 | $4.08 | $20410.00 |
| 2026-01-05 | SOHN, CATHERINE A. | Director | Buy | 500 | $4.24 | $2117.55 |
| 2026-01-01 | JORDT, RAYMOND M | Chief Business Officer | Sale | 9,375 | — | — |
| 2026-01-01 | JORDT, RAYMOND M | Chief Business Officer | Buy | 9,375 | — | — |
| 2026-01-01 | JORDT, RAYMOND M | Chief Business Officer | Sale | 2,475 | $3.61 | $8934.75 |
| 2025-12-29 | JORKASKY, DIANE | Director | Buy | 527 | $3.80 | $2002.60 |
| 2025-12-23 | GILL, JOHN | Director | Buy | 12,500 | $4.10 | $51250.00 |
| 2025-12-22 | DURSO, JEROME BENEDICT | Director | Buy | 12,500 | $4.13 | $51568.75 |
| 2025-12-01 | DURSO, JEROME BENEDICT | Director, CEO-elect | Buy | 1,824,400 | — | — |
| 2025-12-01 | DURSO, JEROME BENEDICT | Director, CEO-elect | Buy | 633,700 | — | — |
| 2025-11-11 | WEAVER, GREGORY L | Chief Financial Officer | Sale | 18,750 | — | — |
| 2025-11-11 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 18,750 | — | — |
| 2025-11-11 | WEAVER, GREGORY L | Chief Financial Officer | Sale | 5,672 | $4.28 | $24276.16 |
| 2025-10-01 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 166,800 | — | — |
| 2025-10-01 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 57,900 | — | — |
| 2025-10-01 | ARBET-ENGELS, CHRISTOPHE | Chief Medical Officer | Buy | 450,000 | — | — |
| 2025-10-01 | ARBET-ENGELS, CHRISTOPHE | Chief Medical Officer | Buy | 150,000 | — | — |
| 2025-09-25 | SOHN, CATHERINE A. | Director | Buy | 48,800 | — | — |
| 2025-09-25 | SCHAFER, KLAUS | Director | Buy | 48,800 | — | — |
| 2025-09-25 | SAYARE, MITCHEL | Director | Buy | 48,800 | — | — |
| 2025-09-25 | PISANO, WAYNE | Director | Buy | 48,800 | — | — |
| 2025-09-25 | LAWVER, TERI L | Director | Buy | 48,800 | — | — |
| 2025-09-25 | JORKASKY, DIANE | Director | Buy | 48,800 | — | — |
| 2025-09-25 | HODGES, PHILIP | Director | Buy | 48,800 | — | — |
| 2025-09-25 | GILL, JOHN | Director | Buy | 48,800 | — | — |
| 2025-09-25 | DURSO, JEROME BENEDICT | Director | Buy | 48,800 | — | — |
| 2025-09-16 | RICHARDSON, LINDA M | Chief Commercial Officer | Buy | 278,000 | — | — |
| 2025-09-16 | RICHARDSON, LINDA M | Chief Commercial Officer | Buy | 96,000 | — | — |
| 2025-07-31 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 846 | $3.14 | $2656.44 |
| 2025-07-31 | JORDT, RAYMOND M | Chief Business Officer | Buy | 1,368 | $3.14 | $4295.52 |
| 2025-07-31 | HARRIS, MATTHEW SCOTT | Chief Medical Officer | Buy | 2,018 | $3.14 | $6336.52 |
| 2025-03-17 | SOHN, CATHERINE A. | Director | Buy | 1,000 | $5.78 | $5784.50 |
| 2025-03-13 | WEAVER, GREGORY L | Chief Financial Officer | Buy | 10,000 | $5.20 | $51996.00 |
| 2025-03-07 | HARRIS, MATTHEW SCOTT | Chief Medical Officer | Sale | 67,787 | — | — |
| 2025-02-24 | LAWVER, TERI L | Director | Buy | 69,800 | — | — |
| 2025-02-24 | DURSO, JEROME BENEDICT | Director | Buy | 69,800 | — | — |
| 2025-02-06 | SOHN, CATHERINE A. | Director | Buy | 18,600 | — | — |
| 2025-02-02 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 7,775 | — | — |
| 2025-02-02 | ROBERTS, M SCOT | Chief Scientific Officer | Buy | 7,775 | — | — |
Frequently asked questions
Are ALT insiders buying or selling?
Over the transactions on record, ALT insiders have been net buyers, with about $459656.20 in stock sold across 25 sales, against 21 open-market purchases.
Does insider selling at ALT mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which ALT insiders are selling the most?
Recent selling is concentrated in a few names. GARG, VIPIN K accounts for the largest share on record, with about $274660.84 sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.