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Company profile

Altimmune, Inc. insider acquisitions

Company CIK 0001326190 · Reported insider acquisitions and filing context.

Company filings at SEC ↗
ALT · Nasdaq

These are company listings. A transaction is linked to a particular security only when the filing provides enough information.

Company activity summary

By transaction date, as of October 23, 2026.

7 days30 days90 daysOverlapping periods · securities and currencies kept separate
30-day company acquisitions grouped by security, category, original code, and currency.
Type / codeReported securityTransactionsKnown purchase valueMissing amounts
Stock awardCode ARestricted Stock UnitsDerivative · Currency not specified1Not applicable0
Stock awardCode AStock Options (option to buy)Derivative · Currency not specified1Not applicable0
Exercise / conversionCode MCommon Stock, par value $0.0001Non-derivative · Currency not specified2Not applicable0

Known purchase value sums available amounts for non-derivative purchases only. Missing amounts are excluded. “Currency not specified” does not establish that the amounts share a currency. These summaries use all matching loaded records, while the timeline below covers only the current page.

Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Arbet-Engels ChristopheArbet-Engels ChristopheWEAVER GREGORY LWEAVER GREGORY LMENZIUSO RICHARD THOMASMENZIUSO RICHARD THOMASJorkasky DianeJorkasky DianeGILL JOHNGILL JOHNDurso Jerome BenedictDurso Jerome BenedictArbet-Engels Christophe · October 1, 2026 · Exercise / conversion · Common Stock, par value $0.0001WEAVER GREGORY L · October 1, 2026 · Exercise / conversion · Common Stock, par value $0.0001MENZIUSO RICHARD THOMAS · October 1, 2026 · Stock award · Restricted Stock UnitsMENZIUSO RICHARD THOMAS · October 1, 2026 · Stock award · Stock Options (option to buy)Jorkasky Diane · December 29, 2025 · Purchase · Common Stock, par value $0.0001GILL JOHN · December 23, 2025 · Purchase · Common Stock, par value $0.0001Durso Jerome Benedict · December 22, 2025 · Purchase · Common Stock, par value $0.0001Durso Jerome Benedict · December 1, 2025 · Stock award · Restricted Stock UnitsDurso Jerome Benedict · December 1, 2025 · Stock award · Stock Options (option to buy)WEAVER GREGORY L · November 11, 2025 · Exercise / conversion · Common Stock, par value $0.0001Nov 11, 2025Oct 1, 2026
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

10 dated transactions · 6 of 6 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Oct 1, 2026Altimmune, Inc.Common Stock, par value $0.0001Arbet-Engels ChristopheExercise / conversion
Oct 1, 2026Altimmune, Inc.Common Stock, par value $0.0001WEAVER GREGORY LExercise / conversion
Oct 1, 2026Altimmune, Inc.Restricted Stock UnitsMENZIUSO RICHARD THOMASStock award
Oct 1, 2026Altimmune, Inc.Stock Options (option to buy)MENZIUSO RICHARD THOMASStock award
Dec 29, 2025Altimmune, Inc.Common Stock, par value $0.0001Jorkasky DianePurchase
Dec 23, 2025Altimmune, Inc.Common Stock, par value $0.0001GILL JOHNPurchase
Dec 22, 2025Altimmune, Inc.Common Stock, par value $0.0001Durso Jerome BenedictPurchase
Dec 1, 2025Altimmune, Inc.Restricted Stock UnitsDurso Jerome BenedictStock award
Dec 1, 2025Altimmune, Inc.Stock Options (option to buy)Durso Jerome BenedictStock award
Nov 11, 2025Altimmune, Inc.Common Stock, par value $0.0001WEAVER GREGORY LExercise / conversion

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Share price & reported acquisitions

Daily closing prices from a separate source. The date window above also filters prices; reporting-owner and transaction-type selections filter the markers.

Price history is not available

Market-price history is not connected yet.

ALT · Currency not specified. A marker uses that day's closing price, not the reported transaction price. No price is substituted for a missing trading day.

Reported acquisitions

Filing-date filters apply to the list and timeline. The summary above uses transaction dates.

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Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedReporting ownersType / securityQuantityPrice / reference valueDetails
Trade:
Arbet-Engels ChristopheChief Medical Officer
Exercise / conversionCommon Stock, par value $0.0001Non-derivative security · Code M37,5000 *Value: 0Currency not specifiedView ↗
Trade:
WEAVER GREGORY LChief Financial Officer
Exercise / conversionCommon Stock, par value $0.0001Non-derivative security · Code M14,4750 *Value: 0Currency not specifiedView ↗
Trade:
MENZIUSO RICHARD THOMASPrincipal Accounting Officer
Stock awardRestricted Stock UnitsDerivative security · Code A36,2340Value: 0Currency not specifiedView ↗
Trade:
MENZIUSO RICHARD THOMASPrincipal Accounting Officer
Stock awardStock Options (option to buy)Derivative security · Code A84,5460Value: 0Currency not specifiedView ↗
Trade: PurchaseCommon Stock, par value $0.0001Non-derivative security · Code P5273.8Value: 2,002.6Currency not specifiedView ↗
Trade:
GILL JOHNDirector
PurchaseCommon Stock, par value $0.0001Non-derivative security · Code P12,5004.1Value: 51,250Currency not specifiedView ↗
Trade: PurchaseCommon Stock, par value $0.0001Non-derivative security · Code P12,5004.1255 *Value: 51,568.75Currency not specifiedView ↗
Trade:
Durso Jerome BenedictCEO-elect · Director
Stock awardRestricted Stock UnitsDerivative security · Code A633,7000Value: 0Currency not specifiedView ↗
Trade:
Durso Jerome BenedictCEO-elect · Director
Stock awardStock Options (option to buy)Derivative security · Code A1,824,4000Value: 0Currency not specifiedView ↗
Trade:
WEAVER GREGORY LChief Financial Officer
Exercise / conversionCommon Stock, par value $0.0001Non-derivative security · Code M18,7500 *Value: 0Currency not specifiedView ↗

Reporting owners are associated with a filing. Jointly reported amounts are not allocated to individual owners. Historical coverage is still being built. Read the methodology →