Atossa Therapeutics Ownership | Who Owns Atossa Therapeutics?
Atossa Therapeutics Ownership Summary
Atossa Therapeutics is owned by 14.38% institutional investors, 1.41% insiders, and 84.22% 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 | 14.38% | 1.41% | 84.22% |
| Sector | Healthcare Stocks | 35.58% | 11.87% | 52.55% |
| Industry | Biotech Stocks | 35.75% | 11.83% | 52.41% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 9.20M | 7.34% | $10.94M |
| Vanguard group | 6.15M | 4.76% | $3.63M |
| Vanguard fiduciary trust | 52.23K | 0.61% | $274.76K |
| Nuveen asset management | 170.73K | 0.14% | $161.19K |
| Bank of america corp /de/ | 105.67K | 0.08% | $125.75K |
| Vanguard global advisers | 3.09K | 0.04% | $16.25K |
| Point72 asia (singapore) pte. | 44.11K | 0.03% | $38.24K |
| Wolverine trading | 18.34K | 0.01% | $16.01K |
| Greenberg financial group | 18.22K | 0.01% | $10.75M |
| Alliancebernstein | 17.38K | 0.01% | $16.41K |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Point72 asia (singapore) pte. | 44.11K | 0.01% | $38.24K |
| Greenberg financial group | 18.22K | 0.00% | $10.75M |
| Planning capital management | 1.00K | 0.00% | $1.19K |
| Northrock partners | 16.75K | 0.00% | $14.52K |
| Blackrock | 9.20M | 0.00% | $10.94M |
| Avion wealth | 318.00 | 0.00% | $1.00K |
| Jain global | 16.71K | 0.00% | $14.48K |
| Unique wealth strategies | 166.00 | 0.00% | $299.00 |
| Vanguard group | 6.15M | 0.00% | $3.63M |
| Vanguard fiduciary trust | 52.23K | 0.00% | $274.76K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 9.20M | 0.00% | 6.45M |
| Vanguard group | 6.15M | 0.00% | 68.99K |
| Vanguard fiduciary trust | 52.23K | 0.00% | 52.23K |
| Bank of america corp /de/ | 105.67K | - | 25.74K |
| Greenberg financial group | 18.22K | 0.00% | 18.22K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ameriprise financial | - | - | -3.79M |
| Laurion capital management lp | - | - | -2.23M |
| Renaissance | - | - | -2.06M |
| Blackrock funding, inc. /de | - | - | -2.00M |
| Geode capital management | - | - | -1.37M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 52.23K | 0.00% | 52.23K | $274.76K |
| Greenberg financial group | 18.22K | 0.00% | 18.22K | $10.75M |
| Vanguard global advisers | 3.09K | - | 3.09K | $16.25K |
| Planning capital management | 1.00K | 0.00% | 1.00K | $1.19K |
| Avion wealth | 318.00 | 0.00% | 318.00 | $1.00K |
Sold Out
| Holder | Change |
|---|---|
| Eversource wealth advisors | -2.00 |
| Larson financial group | -20.00 |
| Capital performance advisors llp | -25.00 |
| True wealth design | -29.00 |
| Srs capital advisors | -42.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 32 | -52.24% | 1,239,476 | -94.35% | 14 | 4.98% | 9 | -71.88% | 23 | 155.56% |
| Dec 31, 2025 | 18 | -74.29% | 6,781,735 | -65.01% | 5 | 2.33% | 7 | -65.00% | 2 | -92.00% |
| Sep 30, 2025 | 20 | -76.74% | 6,698,329 | -68.63% | 5 | 1.90% | 6 | -85.00% | 3 | -88.00% |
| Jun 30, 2025 | 86 | - | 21,349,077 | -24.72% | 16 | 3.43% | 39 | 44.44% | 25 | -19.35% |
| Mar 31, 2025 | 86 | -1.15% | 28,358,791 | -5.26% | 21 | 3.88% | 27 | -32.50% | 31 | 47.62% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 3.94M | 3.05% | - |
| Vanguard Total Stock Mkt Idx Inv | 256.14K | 2.97% | - |
| iShares Russell 2000 ETF | 3.15M | 2.44% | - |
| Columbia Small Cap Value Discovery Fund | 189.23K | 2.20% | 7.61K |
| Columbia Small Cap Value Discv A | 2.75M | 2.13% | 2.75M |
| Columbia Small Cap Value I A | 2.09M | 1.62% | 57.50K |
| Columbia Small Cap Value I | 2.04M | 1.58% | 2.04M |
| Vanguard Institutional Extnd Mkt Idx Tr | 99.42K | 1.15% | 13.00K |
| Fidelity Small Cap Index | 1.29M | 1.00% | - |
| iShares Russell 2000 Value ETF | 1.01M | 0.78% | - |
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 |
|---|---|---|
| 2026 Q2 | - | - |
| 2026 Q1 | - | - |
| 2025 Q4 | - | - |
| 2025 Q2 | 1 | - |
| 2025 Q1 | 1 | - |
ATOS Ownership FAQ
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