Gregory L. Weaver - 01 Apr 2026 Form 4 Insider Report for Altimmune, Inc. (ALT)

Reporting relationship: Chief Financial Officer
Issuer ticker: ALT
Reported as of: 01 Apr 2026
Net transaction value: +$31,499
SEC form: 4
Accepted by SEC: 01 Apr 2026, 16:05:18 UTC
Prior SEC filing: 09 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Gregory Weaver

Key filing fact

Gregory L. Weaver filed Form 4 for Altimmune, Inc. (ALT) on 01 Apr 2026.

Key facts

This page summarizes Gregory L. Weaver's Form 4 filing for Altimmune, Inc. (ALT).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 01 Apr 2026, 16:05.

Change

Previous filing in this sequence was filed on 09 Mar 2026.
Current net transaction value: +$31,499.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001251779 Primary reporting owner

WEAVER GREGORY L

Relationship: Chief Financial Officer
Address: 910 CLOPPER ROAD, SUITE 201S, GAITHERSBURG
Signature: /s/ Gregory Weaver
Signature date: 01 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALT transaction

Common Stock, par value $0.0001

Purchase

Transaction value: $31,499
Shares: +10,000
Change %: +36%
Price: $3.15
Shares after: 38,078
Date: 01 Apr 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.1450 to $3.1499, inclusive. The reporting person undertakes to provide to Altimmune, Inc., any security holder of Altimmune, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.