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ALTNasdaq
Altimmune, Inc.
Pharmaceutical Preparations · DE · CIK 1326190
Altimmune develops novel therapies for serious liver diseases, including MASH, AUD, and ALD
$508M
Market cap
$2.94
Last close
+4.3%
1D
+0.3%
5D
3.6M
Volume
Price · last 39 sessions-2.6%
May 4L $2.59 · H $3.26Jun 29
363
Total filings
Jun 16, 2026
Last filing
12/31
Fiscal year end
8-KCompany UpdateJun 16, 202610-Q10-QMay 13, 20268-KResults of OperationsMay 13, 20268-KMaterial AgreementApr 24, 2026424B5424B5Apr 24, 2026424B5424B5Apr 22, 20268-KBylaw Amendment · Shareholder VoteApr 16, 2026DEF 14ADEF 14AMar 17, 202610-K10-KMar 6, 20268-KResults of OperationsMar 5, 20268-KCompany UpdateFeb 3, 20268-KMaterial AgreementJan 28, 2026424B5424B5Jan 28, 20268-KReg FD Disclosure · Company UpdateDec 19, 20258-KExecutive Change · Reg FD DisclosureDec 1, 20258-KMaterial Agreement · Agreement TerminatedNov 6, 2025424B5424B5Nov 6, 202510-Q10-QNov 6, 20258-KMaterial Agreement · Results of OperationsNov 6, 20258-KExecutive ChangeOct 3, 20258-KShareholder VoteSep 25, 2025DEF 14ADEF 14AAug 15, 202510-Q10-QAug 12, 20258-KResults of OperationsAug 12, 20258-KReg FD Disclosure · Company UpdateJun 26, 202510-Q10-QMay 13, 20258-KMaterial Agreement · Results of OperationsMay 13, 20258-KCompany UpdateMar 13, 202510-K10-KFeb 27, 20258-KExecutive Change · Results of OperationsFeb 27, 20258-KExecutive Change · Reg FD DisclosureFeb 25, 20258-KCompany UpdateDec 11, 202410-Q10-QNov 12, 20248-KResults of OperationsNov 12, 20248-KExecutive Change · Reg FD DisclosureNov 12, 20248-KShareholder VoteSep 26, 2024DEF 14ADEF 14AAug 15, 20248-KExecutive ChangeAug 15, 202410-Q10-QAug 8, 20248-KResults of OperationsAug 8, 20248-KExecutive Change · Reg FD DisclosureJun 26, 202410-Q10-QMay 9, 20248-KResults of OperationsMay 9, 202410-K10-KMar 27, 20248-KResults of Operations · Company UpdateMar 27, 2024SC 13GSC 13GMar 5, 2024SC 13GSC 13GJan 26, 20248-KReg FD Disclosure · Company UpdateNov 30, 202310-Q10-QNov 7, 20238-KResults of OperationsNov 7, 20238-KShareholder VoteSep 28, 2023DEF 14ADEF 14AAug 16, 202310-Q10-QAug 10, 20238-KResults of OperationsAug 10, 202310-Q10-QMay 11, 20238-KResults of OperationsMay 11, 20238-KExecutive ChangeMar 27, 20238-KReg FD Disclosure · Company UpdateMar 21, 202310-K10-KFeb 28, 20238-KResults of OperationsFeb 28, 2023SC 13GSCHEDULE 13GFeb 9, 20238-KReg FD Disclosure · Company UpdateDec 20, 202210-Q10-QNov 10, 20228-KResults of OperationsNov 10, 20228-KShareholder VoteSep 29, 20228-KReg FD Disclosure · Company UpdateSep 14, 2022DEF 14ADEF 14AAug 16, 202210-Q10-QAug 11, 20228-KResults of OperationsAug 11, 2022SC 13GSC 13GJul 8, 2022SC 13GSC 13GJul 7, 202210-Q10-QMay 12, 20228-KResults of OperationsMay 12, 2022SC 13GSC 13GMar 24, 202210-K10-KMar 15, 20228-KResults of OperationsMar 15, 2022SC 13GSC 13GFeb 11, 2022SC 13GSC 13GFeb 11, 2022SC 13GSC 13GFeb 4, 2022SC 13GSC 13GJan 3, 2022
Insider Activity
◆ Cluster Buy · 6 insidersIn the 90 days to Mar 6, 2026: 6 insiders bought $216K.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 6, 2026 | Durso Jerome BenedictPresident and CEO | Buy | 20,000 | $3.54 | $71K |
| Mar 6, 2026 | Weaver Gregory LChief Financial Officer | Buy | 5,000 | $3.54 | $18K |
| Jan 8, 2026 | Pisano WayneDirector | Buy | 5,000 | $4.08 | $20K |
| Jan 5, 2026 | Sohn Catherine A.Director | Buy | 500 | $4.24 | $2K |
| Dec 29, 2025 | Jorkasky DianeDirector | Buy | 527 | $3.80 | $2K |
| Dec 23, 2025 | Gill JohnDirector | Buy | 12,500 | $4.10 | $51K |
| Dec 22, 2025 | Durso Jerome BenedictDirector | Buy | 12,500 | $4.13 | $52K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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