ALT

Altimmune, Inc.

Pharmaceutical PreparationsNasdaqNon-accelerated filer<br>Smaller reporting company

Total Trades

Buys

Sells

Largest Trade

$100K–$500K

Insiders

Institutional Funds

140

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Pisano Wayne	Director	BUY	$15K–$50K	5K	$4.08	Jan 9, 2026
Sohn Catherine A.	Director	BUY	$1K–$15K	500	$4.24	Jan 5, 2026
Jorkasky Diane	Director	BUY	$1K–$15K	527	$3.80	Dec 29, 2025
GILL JOHN	Director	BUY	$50K–$100K	13K	$4.10	Dec 23, 2025
Durso Jerome Benedict	Director	BUY	$50K–$100K	13K	$4.13	Dec 22, 2025
Sohn Catherine A.	Director	BUY	$1K–$15K	1K	$5.78	Mar 18, 2025
WEAVER GREGORY L	CFO	BUY	$50K–$100K	10K	$5.20	Mar 14, 2025
Drutz David	Director	EXERCISE	$100K–$500K	42K	$2.55	Aug 20, 2024
Drutz David	Director	SELL	$100K–$500K	16K	$6.90	Aug 20, 2024
Drutz David	Director	BUY	<$1K	300	$2.88	Aug 15, 2023
GILL JOHN	Director	SELL	$15K–$50K	3K	$15.00	Jul 6, 2023
Drutz David	Director	BUY	$15K–$50K	9K	$4.27	Mar 27, 2023
Eisenstadt Richard I	CFO	BUY	$15K–$50K	10K	$4.31	Mar 25, 2023
Harris Matthew Scott	Chief Medical Offi…	BUY	$15K–$50K	10K	$4.22	Mar 24, 2023
Pisano Wayne	Director	SELL	$100K–$500K	20K	$15.01	Dec 22, 2022
Pisano Wayne	Director	EXERCISE	$50K–$100K	20K	$2.60	Dec 22, 2022
Garg Vipin K	President and CEO	SELL	$100K–$500K	20K	$20.02	Sep 1, 2022
Garg Vipin K	President and CEO	SELL	$100K–$500K	15K	$15.06	Aug 12, 2022
Roberts M Scot	Chief Scientific O…	EXERCISE	$50K–$100K	28K	$2.90	Jul 5, 2022
Roberts M Scot	Chief Scientific O…	SELL	$100K–$500K	37K	$12.00	Jul 5, 2022
Roberts M Scot	Chief Scientific O…	EXERCISE	$1K–$15K	5K	$2.60	Jun 30, 2022
Roberts M Scot	Chief Scientific O…	SELL	$50K–$100K	5K	$12.00	Jun 30, 2022
Roberts M Scot	Chief Scientific O…	SELL	$100K–$500K	37K	$12.00	Jun 28, 2022
Roberts M Scot	Chief Scientific O…	EXERCISE	$50K–$100K	37K	$2.14	Jun 28, 2022
Jorkasky Diane	Director	SELL	$100K–$500K	18K	$11.75	Jun 28, 2022
Jorkasky Diane	Director	EXERCISE	$50K–$100K	18K	$3.15	Jun 28, 2022
Drutz David	Director	BUY	$1K–$15K	1K	$8.00	Jun 17, 2022
Drutz David	Director	BUY	$1K–$15K	1K	$4.50	May 25, 2022
Harris Matthew Scott	Chief Medical Offi…	SELL	$100K–$500K	30K	$7.52	Mar 3, 2022
Harris Matthew Scott	Chief Medical Offi…	EXERCISE	$50K–$100K	30K	$1.92	Mar 3, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 140 funds holding

Fund	Shares	Value	Type
STATE STREET CORP	5.1M	$1M+	SH
TANG CAPITAL MANAGEMENT LLC	2.1M	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	2.0M	$1M+	SH
VANGUARD GROUP INC	701K	$1M+	SH
JANE STREET GROUP, LLC	603K	$1M+	SH
BlackRock, Inc.	484K	$1M+	SH
SCHRODER INVESTMENT MANAGEMENT GROUP	469K	$1M+	SH
BARCLAYS PLC	401K	$1M+	SH
Beirne Wealth Consulting Services, LLC	376K	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	284K	$1M+	SH
Sculptor Capital LP	277K	$500K+	SH
DIMENSIONAL FUND ADVISORS LP	261K	$500K+	SH
BROWN WEALTH MANAGEMENT, LLC	259K	$500K+	SH
Steward Partners Investment Advisory, LLC	245K	$500K+	SH
Hennion & Walsh Asset Management, Inc.	215K	$500K+	SH
Rafferty Asset Management, LLC	196K	$500K+	SH
COMMONWEALTH EQUITY SERVICES, LLC	181K	$500K+	SH
BNP PARIBAS FINANCIAL MARKETS	177K	$500K+	SH
IMC-Chicago, LLC	173K	$500K+	SH
Jefferies Financial Group Inc.	158K	$500K+	SH