ALT insider buying and SEC filings, explained
Altimmune, Inc. · CIK 1326190
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$366K
Insiders who bought
4
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 13, 2026 | Purchase (code P) | Jerome Benedict Durso (CEO and Director) bought 15,000 shares at $2.95 ($44K), reported as a purchase (code P). Holdings up 32% to 62,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 13, 2026 |
| Apr 6, 2026 | Purchase (code P) | John Gill (Director) bought 9,200 shares at about $3.41 ($31K), reported as a purchase (code P). Holdings up 74% to 21,700 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 6, 2026 |
| Apr 1, 2026 | Purchase (code P) | Jerome Benedict Durso (CEO and Director) bought 15,000 shares at $3.14 ($47K), reported as a purchase (code P). Holdings up 46% to 47,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 1, 2026 |
| Apr 1, 2026 | Purchase (code P) | Gregory L. Weaver (CFO) bought 10,000 shares at about $3.15 ($32K), reported as a purchase (code P). Holdings up 36% to 38,078 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Apr 1, 2026 |
| Mar 6, 2026 | Purchase (code P) | Jerome Benedict Durso (CEO and Director) bought 20,000 shares at about $3.54 ($71K), reported as a purchase (code P). Holdings up 160% to 32,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Mar 6, 2026 | Purchase (code P) | Gregory L. Weaver (CFO) bought 5,000 shares at $3.54 ($18K), reported as a purchase (code P). Holdings up 22% to 28,078 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Jan 8, 2026 | Purchase (code P) | Wayne Pisano (Director) bought 5,000 shares at $4.08 ($20K), reported as a purchase (code P). Holdings up 59% to 13,498 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 9, 2026 |
| Jan 5, 2026 | Purchase (code P) | Catherine A. Sohn (Director) bought 500 shares at $4.24 ($2K), reported as a purchase (code P). Holdings up 50% to 1,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 5, 2026 |
| Dec 29, 2025 | Purchase (code P) | Diane Jorkasky (Director) bought 527 shares at $3.80 ($2K), reported as a purchase (code P). New position of 527 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 29, 2025 |
| Dec 23, 2025 | Purchase (code P) | John Gill (Director) bought 12,500 shares at $4.10 ($51K), reported as a purchase (code P). New position of 12,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 23, 2025 |
| Dec 22, 2025 | Purchase (code P) | Jerome Benedict Durso (Director) bought 12,500 shares at about $4.13 ($52K), reported as a purchase (code P). New position of 12,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 22, 2025 |
28 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
3 insiders bought in 30 days
$198K in purchases since Mar 6, 2026 · Purchases traded Mar 6, 2026 to Apr 6, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Gregory L. Weaver (CFO) | $18K | Mar 6, 2026 | SEC filing |
| Jerome Benedict Durso (CEO) | $71K | Mar 6, 2026 | SEC filing |
| Gregory L. Weaver (CFO) | $32K | Apr 1, 2026 | SEC filing |
| Jerome Benedict Durso (CEO) | $47K | Apr 1, 2026 | SEC filing |
| John Gill (Director) | $31K | Apr 6, 2026 | SEC filing |
3 insiders bought in 30 days
$123K in purchases since Dec 22, 2025 · Purchases traded Dec 22, 2025 to Jan 8, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Jerome Benedict Durso (Director) | $52K | Dec 22, 2025 | SEC filing |
| John Gill (Director) | $51K | Dec 23, 2025 | SEC filing |
| Wayne Pisano (Director) | $20K | Jan 8, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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