Altimmune, Inc.

Q: Jun 30 2026

Q: Mar 31 2026

FY: Dec 31 2025

Q: Sep 30 2025

Q: Jun 30 2025

Q: Mar 31 2025

FY: Dec 31 2024

Q: Sep 30 2024

Q: Jun 30 2024

Q: Mar 31 2024

FY: Dec 31 2023

Q: Sep 30 2023

Q: Jun 30 2023

Q: Mar 31 2023

FY: Dec 31 2022

Q: Sep 30 2022

Q: Jun 30 2022

Q: Mar 31 2022

FY: Dec 31 2021

Q: Sep 30 2021

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Results of Operations and Financial Condition

Regulation FD Disclosure

Other Events

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

Results of Operations and Financial Condition

Other Events

Entry into a Material Definitive Agreement

Regulation FD Disclosure

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Regulation FD Disclosure

Entry into a Material Definitive Agreement

Other Events

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

No description available

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933

Notice of Effectiveness

Registration statement under Securities Act of 1933

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Automatic Shelf Registration

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

No description available

Preliminary Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Arbet-Engels Christophe

WEAVER GREGORY L

MENZIUSO RICHARD THOMAS

MENZIUSO RICHARD THOMAS

Richardson Linda M

Durso Jerome Benedict

Roberts M Scot

WEAVER GREGORY L

TANG CAPITAL MANAGEMENT LLC

STATE STREET CORP

Sohn Catherine A.

TCG Crossover GP II, LLC

SAYARE MITCHEL

Lawver Teri L

Pisano Wayne

Schafer Klaus

Hodges Philip

Jorkasky Diane

GILL JOHN

VIKING GLOBAL INVESTORS LP

Annual Report Scanned (Paper)

Letter from the SEC

Annual Report Scanned (Paper)

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)

No description available

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

No description available

Post-effective amendment filed solely to add exhibits