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ALT insider trading

Altimmune, Inc. — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.
Insider buys · 24 mo
13
Bought · 24 mo
$428k
Buys · last 90 days
1 · $44k
Most recent buy
2026-08-13

Cluster buy detected

5 insiders bought ALT within a short window (2025-12-22→2026-01-08), $127k in total — cluster score 73/100. Members see the buyers, the score breakdown and the chart.

See the cluster

Recent insider filings

FiledInsiderTypeSharesPriceValue
2026-08-13Durso Jerome Benedict
President and CEO
Bought15,000$2.95$44k
2026-04-06GILL JOHNcluster
Director
Bought9,200$3.41$31k
2026-04-01WEAVER GREGORY Lcluster
Chief Financial Officer
Bought10,000$3.15$32k
2026-04-01Durso Jerome Benedictcluster
President and CEO
Bought15,000$3.14$47k
2026-03-09WEAVER GREGORY Lcluster
Chief Financial Officer
Bought5,000$3.54$18k
2026-03-09Durso Jerome Benedictcluster
President and CEO
Bought20,000$3.54$71k
2026-01-09Pisano Waynecluster
Director
Bought5,000$4.08$20k
2026-01-05Sohn Catherine A.cluster
Director
Bought500$4.24$2k
2025-12-29Jorkasky Dianecluster
Director
Bought527$3.80$2k
2025-12-23GILL JOHNcluster
Director
Bought12,500$4.10$51k
2025-12-22Durso Jerome Benedictcluster
Director
Bought12,500$4.13$52k
2025-03-18Sohn Catherine A.
Director
Bought1,000$5.78$6k
2025-03-14WEAVER GREGORY L
Chief Financial Officer
Bought10,000$5.20$52k

Most active insider buyers

InsiderRoleBuysTotal bought
Durso Jerome BenedictPresident and CEO4$214k
WEAVER GREGORY LChief Financial Officer3$101k
GILL JOHNDirector2$83k
Pisano WayneDirector1$20k
Sohn Catherine A.Director2$8k
Jorkasky DianeDirector1$2k

See ALT on the chart

Every insider buy and sell for ALT plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

Open the browserFree sample
Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.