JOHN GILL - 25 Sep 2025 Form 4 Insider Report for Altimmune, Inc. (ALT)

Role
Director
Signature
/s/ Gregory Weaver, as Attorney-in-Fact
Issuer symbol
ALT
Transactions as of
25 Sep 2025
Net transactions value
$0
Form type
4
Filing time
29 Sep 2025, 16:17:01 UTC
Previous filing
30 Sep 2024
Next filing
23 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
GILL JOHN Director C/O ALTIMMUNE, INC., 910 CLOPPER ROAD,, SUITE 201S, GAITHERSBURG /s/ Gregory Weaver, as Attorney-in-Fact 29 Sep 2025 0001409939

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ALT Common Stock, par value $0.0001 Gift $0 -2,714 -100% $0.000000 0 06 Jan 2022 Direct F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ALT Stock Options (option to buy) Award $0 +48,800 $0.000000 48,800 25 Sep 2025 Common Stock, par value $0.0001 48,800 $3.92 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents a bona fide gift of 2,714 shares of common stock made on January 6, 2022.
F2 Certain Section 16 reports previously filed by the reporting person inadvertently overstated the reporting person's direct common stock ownership by 57 shares. As of the date of this filing, the reporting person does not hold any shares of common stock directly or indirectly.
F3 The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following September 25, 2025, subject to the reporting person's continued service through the applicable vesting date.

Remarks:

Exhibit 24 - Power of Attorney