Peter Greenleaf - 02 Nov 2026 Form 4 Insider Report for Altimmune, Inc. (ALT)

Reporting relationship: Director
Issuer ticker: ALT
Reported as of: 02 Nov 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 04 Nov 2026, 16:08:45 UTC
Prior SEC filing: 06 Oct 2026
Source filing: View source filing
Reporting owner signature: /s/ Gregory Weaver, as Attorney-in-Fact

Filing notes and source

Key filing fact

Peter Greenleaf filed Form 4 for Altimmune, Inc. (ALT) on 04 Nov 2026.

Key facts

This page summarizes Peter Greenleaf's Form 4 filing for Altimmune, Inc. (ALT).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 04 Nov 2026, 16:08.

Change

Previous filing in this sequence was filed on 06 Oct 2026.
Current net transaction value: $0.

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 0001363683 Primary reporting owner

Greenleaf Peter

Relationship: Director
Address: 350 MOUNT KEMBLE AVENUE, SUITE 1001, MORRISTOWN
Signature: /s/ Gregory Weaver, as Attorney-in-Fact
Signature date: 04 Nov 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ALT transaction Derivative

Stock Options (option to buy)

Award

Transaction value
Shares: +160,000
Change %
Price: $0.000000^*
Shares after: 160,000
Date: 02 Nov 2026
Ownership: Direct
Underlying class: Common Stock, par value $0.0001
Underlying amount: 160,000
Exercise price: $2.02
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 shares underlying the option become vested and exercisable in substantially equal monthly installments over the 36 months following November 2, 2026, subject to the reporting person's continued service through the applicable vesting date.