David A. Siegel Altimmune, Inc. Transaction History

Two Sigma Advisers, LP

$46.1 Billion
Q2 2025

A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Altimmune, Inc. stock. As of the latest transaction made, Two Sigma Advisers, LP holds 129,200 shares of ALT stock, worth $514,216. This represents 0.0% of its overall portfolio holdings.

Number of Shares

129,200

Previous 264,300 51.12%

Holding current value

$514,216

Previous $1.32 Million 62.15%

% of portfolio

0.0%

Previous 0.0%

17 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 14, 2025	SELL	$3.5 - $7.71 $472,850 - $1.04 Million	-135,100 Reduced 51.12%	129,200 $500,000
Q1 2025 May 15, 2025	BUY	$5.0 - $7.45 $993,000 - $1.48 Million	198,600 Added 302.28%	264,300 $1.32 Million
Q4 2024 Feb 14, 2025	SELL	$6.02 - $9.85 $136,654 - $223,595	-22,700 Reduced 25.68%	65,700 $473,000
Q3 2024 Nov 14, 2024	BUY	$5.5 - $8.1 $104,500 - $153,900	19,000 Added 27.38%	88,400 $542,000
Q2 2024 Aug 14, 2024	BUY	$5.91 - $10.23 $410,154 - $709,962	69,400 New	69,400 $461,000
Q3 2023 Nov 14, 2023	SELL	$2.4 - $3.45 $49,920 - $71,760	-20,800 Reduced 2.17%	937,000 $2.44 Million
Q2 2023 Aug 14, 2023	BUY	$3.45 - $5.97 $22,425 - $38,805	6,500 Added 0.68%	957,800 $3.38 Million
Q1 2023 May 15, 2023	BUY	$4.19 - $16.83 $108,940 - $437,579	26,000 Added 2.81%	951,300 $4.01 Million
Q4 2022 Feb 14, 2023	BUY	$8.74 - $16.45 $493,810 - $929,425	56,500 Added 6.5%	925,300 $15.2 Million
Q3 2022 Nov 14, 2022	BUY	$10.67 - $22.41 $1.09 Million - $2.29 Million	102,200 Added 13.33%	868,800 $11.1 Million
Q2 2022 Aug 15, 2022	BUY	$3.94 - $11.77 $298,652 - $892,166	75,800 Added 10.97%	766,600 $8.97 Million
Q1 2022 May 16, 2022	BUY	$5.9 - $9.45 $788,240 - $1.26 Million	133,600 Added 23.98%	690,800 $4.21 Million
Q4 2021 Feb 14, 2022	BUY	$8.69 - $12.48 $4.84 Million - $6.95 Million	557,200 New	557,200 $5.1 Million
Q2 2021 Aug 16, 2021	SELL	$9.85 - $16.46 $2.33 Million - $3.89 Million	-236,200 Closed	0 $0
Q1 2021 May 17, 2021	SELL	$12.71 - $24.31 $1.38 Million - $2.64 Million	-108,400 Reduced 31.46%	236,200 $3.34 Million
Q4 2020 Feb 16, 2021	SELL	$7.84 - $14.22 $1.15 Million - $2.09 Million	-147,300 Reduced 29.95%	344,600 $3.89 Million
Q3 2020 Nov 16, 2020	BUY	$9.93 - $33.26 $4.88 Million - $16.4 Million	491,900 New	491,900 $6.49 Million

Others Institutions Holding ALT

# of Institutions

215

Shares Held

36.2M

Call Options Held

4.92M

Put Options Held

4.18M

View Full List

About Altimmune, Inc.

Ticker ALT
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 49,025,300
Market Cap $195M
Description
Altimmune, Inc., a clinical stage biopharmaceutical company, focuses on developing treatments for obesity and liver diseases. The company's lead product candidate, pemvidutide (proposed INN, formerly known as ALT-801), is a GLP-1/glucagon dual receptor agonist that is in Phase 1b trial for the treatment of obesity and non-alcoholic steatohepatit...

More about ALT

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