Matthew Scott Harris - Jul 31, 2025 Form 4 Insider Report for Altimmune, Inc. (ALT)

Role
Chief Medical Officer
Signature
/s/ Greg Weaver, as Attorney-in-Fact
Stock symbol
ALT
Transactions as of
Jul 31, 2025
Transactions value $
$6,337
Form type
4
Date filed
8/4/2025, 04:05 PM
Previous filing
Mar 11, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Harris Matthew Scott Chief Medical Officer C/O ALTIMMUNE, INC.,, 910 CLOPPER ROAD, SUITE 201S, GAITHERSBURG /s/ Greg Weaver, as Attorney-in-Fact 2025-08-04 0001787762

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ALT Common Stock, par value $0.0001 Award $6.34K +2.02K +14.34% $3.14 16.1K Jul 31, 2025 Direct F1, F2
holding ALT Common Stock, par value $0.0001 67.8K Jul 31, 2025 By Matthew Scott Harris Trust
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These shares were purchased due to participation of the reporting individual in the Issuer's 2019 Employee Stock Purchase Plan ("ESPP"). It pertains to the ESPP purchase period from February 1, 2025 through July 31, 2025.
F2 In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock.