Atossa Therapeutics Ownership | Who Owns Atossa Therapeutics?

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Atossa Therapeutics Ownership Summary

Atossa Therapeutics is owned by 21.95% institutional investors, 0.07% insiders, and 77.97% retail investors. Blackrock is the largest institutional shareholder, holding 7.34% of ATOS shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.05% of its assets in Atossa Therapeutics shares.

ATOS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Atossa Therapeutics	21.95%	0.07%	77.97%
Sector	Healthcare Stocks	279.42%	10.64%	-190.05%
Industry	Biotech Stocks	64.05%	10.69%	25.27%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	9.20M	7.34%	$10.94M
Vanguard group	6.62M	5.26%	$6.25M
Geode capital management	2.81M	2.24%	$2.66M
Blackrock funding, inc. /de	2.15M	1.66%	$1.78M
State street	1.76M	1.40%	$1.66M
Renaissance	1.56M	1.24%	$1.47M
Ubs group	1.12M	0.89%	$1.06M
Morgan stanley	456.15K	0.36%	$542.82K
Qube research	416.37K	0.32%	$345.59K
Y-intercept (hong kong)	386.33K	0.30%	$320.66K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Point72 asia (singapore) pte.	88.21K	0.01%	$73.22K
Y-intercept (hong kong)	386.33K	0.01%	$320.66K
Alpine global management	16.36K	0.00%	$13.57K
Two sigma securities	22.22K	0.00%	$18.44K
Renaissance	1.56M	0.00%	$1.47M
Lvm capital management ltd/mi	21.00K	0.00%	$17.00K
J. l. bainbridge	11.12K	0.00%	$10.50K
Pfg investments	21.25K	0.00%	$17.64K
Planning capital management	1.00K	0.00%	$1.19K
Connor, clark & lunn investment management	198.67K	0.00%	$164.89K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	9.20M	0.00%	6.45M
Ubs group	1.12M	0.00%	1.05M
Y-intercept (hong kong)	386.33K	0.01%	386.33K
Qube research	416.37K	0.00%	325.34K
Renaissance	1.56M	0.00%	247.56K

Top Sellers

Holder	Shares	% Assets	Change
Blackrock funding, inc. /de	2.15M	-	-7.48M
Laurion capital management lp	-	-	-2.23M
Morgan stanley	456.15K	-	-309.26K
Virtu financial	-	-	-208.20K
Rhumbline advisers	-	-	-129.85K

New Positions

Holder	Shares	% Assets	Change	Value
Y-intercept (hong kong)	386.33K	0.01%	386.33K	$320.66K
Point72 asia (singapore) pte.	88.21K	0.01%	88.21K	$73.22K
Hudson bay capital management lp	31.23K	0.00%	31.23K	$25.93K
Jump financial	25.35K	0.00%	25.35K	$21.04K
Alpine global management	16.36K	0.00%	16.36K	$13.57K

Sold Out

Holder	Change
Larson financial group	-20.00
Capital performance advisors llp	-25.00
Delos wealth advisors	-100.00
Nbc securities	-150.00
Old point trust & financial services n a	-250.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2025	86	-1.15%	28,358,791	-5.26%	21	3.88%	27	-32.50%	31	47.62%
Dec 31, 2024	87	-4.40%	29,932,716	9.47%	23	5.04%	40	11.11%	21	-19.23%
Sep 30, 2024	91	12.35%	27,343,751	4.42%	21	4.98%	37	-22.92%	25	78.57%
Jun 30, 2024	81	14.08%	26,186,185	35.76%	20	8.82%	48	29.73%	13	44.44%
Mar 31, 2024	71	42.00%	19,288,845	20.98%	15	9.58%	37	236.36%	9	-43.75%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	3.94M	3.05%	-
Vanguard Total Stock Mkt Idx Inv	3.85M	2.98%	-85.03K
iShares Russell 2000 ETF	3.15M	2.44%	-
Columbia Small Cap Value I A	2.09M	1.62%	57.50K
Columbia Small Cap Value I	2.04M	1.58%	2.04M
Fidelity Small Cap Index	1.29M	1.00%	-
Vanguard Institutional Extnd Mkt Idx Tr	1.17M	0.90%	-501.45K
iShares Russell 2000 Value ETF	1.01M	0.78%	-
Fidelity Extended Market Index	637.80K	0.49%	-1.67K
Vanguard Russell 2000 ETF	632.03K	0.49%	5.67K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 21, 2025	QUAY STEVEN C	President & CEO	Buy	$9.89K
Mar 26, 2025	Remmel H. Lawrence	-	Buy	$7.00K
Apr 10, 2024	Finn Jonathan	-	Buy	$44.25K
Nov 15, 2023	WEAVER GREGORY L	Former EVP, CFO, & Director	Sell	$32.50K
Jun 20, 2023	WEAVER GREGORY L	EVP & CFO	Buy	$48.50K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	1	-
2025 Q1	1	-
2024 Q2	1	-
2024 Q1	-	-
2023 Q4	-	1

ATOS Ownership FAQ

Who Owns Atossa Therapeutics?

Atossa Therapeutics shareholders are primarily institutional investors at 21.95%, followed by 0.07% insiders and 77.98% retail investors. The average institutional ownership in Atossa Therapeutics's industry, Biotech Stocks , is 64.05%, which Atossa Therapeutics falls below.

Who owns the most shares of Atossa Therapeutics?

Atossa Therapeutics’s largest shareholders are Blackrock (9.2M shares, 7.34%), Vanguard group (6.62M shares, 5.26%), and Geode capital management (2.81M shares, 2.24%). Together, they hold 14.84% of Atossa Therapeutics’s total shares outstanding.

Does Blackrock own Atossa Therapeutics?

Yes, BlackRock owns 7.34% of Atossa Therapeutics, totaling 9.2M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 10.94M$. In the last quarter, BlackRock increased its holdings by 6.45M shares, a 234.28% change.

Who is Atossa Therapeutics’s biggest shareholder by percentage of total assets invested?

Point72 asia (singapore) pte is Atossa Therapeutics’s biggest shareholder by percentage of total assets invested, with 0.01% of its assets in 88.21K Atossa Therapeutics shares, valued at 73.22K$.

Who is the top mutual fund holder of Atossa Therapeutics shares?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Atossa Therapeutics shares, with 3.05% of its total shares outstanding invested in 3.94M Atossa Therapeutics shares.

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