Altimmune (ALT) Ownership - Who Owns Altimmune?

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Altimmune (ALT) Ownership Overview

0.65% Insiders

9.45% Mutual Funds

5.75% Other Institutional Investors

11.21% ETFs

72.95% Public Companies and Individual Investors

The ownership structure of Altimmune (ALT) stock is a mix of institutional, retail, and individual investors. Approximately 26.41% of the company’s stock is owned by Institutional Investors, 0.65% is owned by Insiders, and 72.95% is owned by Public Companies and Individual Investors.

The ownership structure of Altimmune (ALT) stock is a mix of institutional, retail, and individual investors. Approximately 15.19% of the company’s stock is owned by Institutional Investors, 0.65% is owned by Insiders, and 11.21% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date	Name	Activity	Value
Mar 09, 2026	Gregory Weaver	xxxxxxxxxxxxx	$17700
Mar 09, 2026	Jerome Benedict Durso	xxxxxxxxxxxxx	$70600
Jan 09, 2026	Wayne Pisano	xxxxxxxxxxxxx	$20400
Dec 29, 2025	Diane Jorkasky	xxxxxxxxxxxxx	$2003

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Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value

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Top Shareholders

# of Shares	Type	% Holding	Value
5,207,607	Institution	4.00%	18,226,625
4,422,826	Institution	3.40%	15,479,891
4,332,763	Institution	3.33%	15,164,671
3,464,415	Institution	2.66%	12,125,453
2,200,209	Institution	1.69%	7,700,732
898,633	Institution	0.69%	3,145,216
869,763	Institution	0.67%	3,044,171
663,391	Institution	0.51%	2,321,869
553,138	Institution	0.43%	1,935,983
550,500	Institution	0.42%	1,926,750

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
4,422,826	Institution	3.40%	15,479,891
2,200,209	Institution	1.69%	7,700,732
898,633	Institution	0.69%	3,145,216
869,763	Institution	0.67%	3,044,171
663,391	Institution	0.51%	2,321,869
550,500	Institution	0.42%	1,926,750
478,063	Institution	0.37%	1,673,221
363,969	Institution	0.28%	1,273,892
300,000	Institution	0.23%	1,050,000
267,468	Institution	0.21%	936,138

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
SPDR S&P BIOTECH ETF	3,335,916	Institution	2.56%	12,009,298
Vanguard Total Stock Market ETF	3,278,071	Institution	2.52%	18,357,198
iShares Russell 2000 ETF	2,068,948	Institution	1.59%	7,241,318
Vanguard Extended Market ETF	1,150,670	Institution	0.88%	6,443,752
iShares Biotechnology ETF	895,652	Institution	0.69%	3,134,782
iShares Russell 2000 Growth ETF	738,788	Institution	0.57%	2,585,758
Fidelity Enhanced Small Cap ETF	554,202	Institution	0.43%	1,995,127
Vanguard Russell 2000 ETF	422,207	Institution	0.32%	2,364,359
Dimensional U.S. Small Cap ETF	284,157	Institution	0.22%	1,022,965
Vanguard Health Care ETF	266,999	Institution	0.21%	1,495,194

FAQ

Who Owns Altimmune Inc (ALT)?

According to the latest TipRanks data, approximately 5.75% of the company's stock is held by institutional investors, 0.65% is held by insiders, and 72.95% is held by retail investors.

What percentage of Altimmune Inc (ALT) stock is held by institutional investors?

According to the latest TipRanks data, approximately 5.75% of Altimmune Inc (ALT) stock is held by institutional investors.

What percentage of Altimmune Inc (ALT) stock is held by retail investors?

According to the latest TipRanks data, approximately 72.95% of Altimmune Inc (ALT) stock is held by retail investors.

Who owns the most shares of Altimmune Inc (ALT)?

Vanguard owns the most shares of Altimmune Inc (ALT).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.