Skip to main content
Altimmune, Inc. logo

Altimmune, Inc. — Investor Relations & Filings

Ticker · ALT ISIN · US02155H1014 LEI · 549300EOYCQ8SW3NVE64 US Manufacturing
Open in API
Filings indexed 1,027 across all filing types
Latest filing 2026-05-13 Share Issue/Capital Cha…
Country US United States of America
Listing US ALT

About Altimmune, Inc.

https://altimmune.com/

Altimmune, Inc. is a clinical-stage biopharmaceutical company focused on developing novel peptide-based therapeutics. The company's primary areas of development are treatments for obesity and liver diseases, including metabolic dysfunction-associated steatohepatitis (MASH). Its lead product candidate is pemvidutide. Altimmune also develops immune-modulating therapies for a range of diseases.

Recent filings

Filing Released Lang Actions
S-8 - Altimmune, Inc. (0001326190) (Filer)
Share Issue/Capital Change Classification · 90% confidence The document is a U.S. SEC Form S-8 Registration Statement filed under the Securities Act of 1933. It registers additional shares under the company’s 2019 Employee Stock Purchase Plan, clearly relating to the issuance of new shares/capital change. This falls squarely into the “Share Issue/Capital Change” category (SHA).
2026-05-13 English
8-K - Altimmune, Inc. (0001326190) (Filer)
Regulatory Filings Classification · 85% confidence The document is a current report on Form 8-K filed under the Securities Exchange Act of 1934, primarily furnishing a press release of financial results as an exhibit. It does not itself present full financial statements like an interim or annual report, nor is it a simple earnings release or management discussion. It is a regulatory filing announcing the Form 8-K report and furnishing Exhibit 99.1. Therefore, it falls under the fallback category for miscellaneous regulatory filings.
2026-05-13 English
424B5 - Altimmune, Inc. (0001326190) (Filer)
Capital/Financing Update Classification · 95% confidence The document is a preliminary prospectus supplement filed pursuant to Rule 424(b)(5) under the Securities Act, related to an offering of common stock, pre-funded warrants, and common stock warrants. It includes detailed terms of the securities offering, underwriting information, risk factors, and legal disclaimers. The document is a registration and offering prospectus supplement, which is a type of capital raising disclosure. It is not a financial report, earnings release, management discussion, or any other report type. It is clearly an update and detailed disclosure related to a financing activity. Therefore, it fits the category of Capital/Financing Update (CAP). The document length is substantial and contains detailed offering terms, consistent with a capital raising filing rather than a brief announcement or regulatory filing. Hence, the classification is CAP with high confidence.
2026-04-22 English
8-K - Altimmune, Inc. (0001326190) (Filer)
Declaration of Voting Results & Voting Rights Announcements Classification · 95% confidence The document is a Form 8-K filed with the SEC, which is a current report used to announce major events that shareholders should know about. The content includes an amendment to the company's certificate of incorporation to increase authorized shares, and detailed voting results from the 2026 Annual Meeting of Stockholders. The document also includes the submission of matters to a vote of security holders, which is typical for voting results announcements. The document is not a full annual report, audit report, or earnings release, but rather a report of voting results and corporate actions taken at the annual meeting. Therefore, the most appropriate classification is Declaration of Voting Results & Voting Rights Announcements (DVA). The document length (7388 characters) and detailed voting results support this classification with high confidence.
2026-04-16 English
SCHEDULE 13G/A - Altimmune, Inc. (0001326190) (Subject)
Major Shareholding Notification
2026-03-26 English
ARS - Altimmune, Inc. (0001326190) (Filer)
Annual Report
2026-03-17 English

Browse filings by year

17 years

Report missing filing

Can't find a specific document? Let us know and we'll add it within 24 hours.

We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.