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CIK 0001326190 · Non-accelerated filer<br>Smaller reporting company

Altimmune, Inc.

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Ticker
ALT
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
202726770
Phone
862-457-1450
Business address
350 MOUNT KEMBLE AVENUE, SUITE 1001, MORRISTOWN, NJ, 07960
Former names
PHARMATHENE, INC, HEALTHCARE ACQUISITION CORP
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2025-09-25 Sohn Catherine A. Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 Durso Jerome Benedict Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 Lawver Teri L Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 Jorkasky Diane Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 GILL JOHN Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 Schafer Klaus Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 SAYARE MITCHEL Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 Hodges Philip Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-25 Pisano Wayne Director Grant or award · Stock Options (option to buy) +48,800 48,800
2025-09-16 Richardson Linda M Chief Commercial Officer Grant or award · Stock Options (option to buy) +278,000 278,000
2025-09-16 Richardson Linda M Chief Commercial Officer Grant or award · Restricted Stock Units +96,000 96,000
2025-07-31 Jordt Raymond M Chief Business Officer Grant or award +1,368 $3.14 $4K 36,270
2025-07-31 Harris Matthew Scott Chief Medical Officer Grant or award +2,018 $3.14 $6K 16,087
2025-07-31 Roberts M Scot Chief Scientific Officer Grant or award +846 $3.14 $3K 74,066
2025-03-17 Sohn Catherine A. Director Purchase +1,000 $5.78 $6K 1,000
2025-03-13 WEAVER GREGORY L Chief Financial Officer Purchase +10,000 $5.20 $52K 10,000
2025-03-07 Harris Matthew Scott Chief Medical Officer Gift −67,787 14,069
2025-02-24 Lawver Teri L Director Grant or award · Stock Options (option to buy) +69,800 69,800
2025-02-24 Durso Jerome Benedict Director Grant or award · Stock Options (option to buy) +69,800 69,800
2025-02-06 Sohn Catherine A. Director Grant or award · Stock Options (option to buy) +18,600 18,600

Page 5 of 21 · 403 trades