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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
2026-05-01 Sohn Catherine A. Director Grant or award · Stock Options (option to buy) +48,800 48,800
2026-05-01 Jorkasky Diane Director Grant or award · Stock Options (option to buy) +48,800 48,800
2026-05-01 GILL JOHN Director Grant or award · Stock Options (option to buy) +48,800 48,800
2026-05-01 SAYARE MITCHEL Director Grant or award · Stock Options (option to buy) +48,800 48,800
2026-04-06 GILL JOHN Director Purchase +9,200 $3.41 $31K 21,700
2026-04-01 Durso Jerome Benedict President and CEO Purchase +15,000 $3.14 $47K 47,500
2026-04-01 WEAVER GREGORY L Chief Financial Officer Purchase +10,000 $3.15 $31K 38,078
2026-03-06 Durso Jerome Benedict President and CEO Purchase +20,000 $3.54 $71K 32,500
2026-03-06 WEAVER GREGORY L Chief Financial Officer Purchase +5,000 $3.54 $18K 28,078
2026-02-26 Roberts M Scot Chief Scientific Officer Grant or award · Stock Options (option to buy) +222,670 222,670
2026-02-26 Roberts M Scot Chief Scientific Officer Grant or award · Restricted Stock Units +95,430 95,430
2026-02-26 WEAVER GREGORY L Chief Financial Officer Grant or award · Stock Options (option to buy) +259,000 259,000
2026-02-26 WEAVER GREGORY L Chief Financial Officer Grant or award · Restricted Stock Units +111,000 111,000
2026-02-02 Roberts M Scot Chief Scientific Officer Option exercise +7,775 115,153
2026-02-02 Roberts M Scot Chief Scientific Officer Shares withheld for taxes −2,329 $5.55 $13K 112,824
2026-02-02 Roberts M Scot Chief Scientific Officer Option exercise · Restricted Stock Units −7,775 0
2026-01-31 Roberts M Scot Chief Scientific Officer Grant or award +5,567 $3.07 $17K 107,378
2026-01-31 Jordt Raymond M Chief Business Officer Grant or award +4,571 $3.07 $14K 70,107
2026-01-31 Garg Vipin K Director Grant or award +6,926 $3.07 $21K 424,519
2026-01-30 Roberts M Scot Chief Scientific Officer Option exercise +9,275 104,670

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