Atossa Therapeutics, Inc.
ATOS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001488039
No open-market purchases or sales by Atossa Therapeutics, Inc. insiders were filed in the last 90 days; 31 institutions reported holding it in 13F filings for Q2 2026, worth $2.60M in total; no superinvestor holds it.
Q4 2025 vs. Q3 2025
How the institutions holding Atossa Therapeutics, Inc. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Of which not filed for Q4 2025 | Q4 2025 | Change |
|---|---|---|---|---|
| Holders | 67 | 3 | 67 | +3 |
| Shares | 19.4M | 62.5K | 22.0M | +2.66M (+13.8%) |
| Value | $16.8M | $54.3K | $13.0M | −$3.78M (−22.6%) |
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (14)
Institutions that held Atossa Therapeutics, Inc. at the end of Q4 2025 but not at the end of Q3 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Jacobs Levy Equity Management, Inc | 1,048,289 | $618.5K | 0.00% |
| Point72 Asset Management, L.P. | 48,092 | $28.4K | 0.00% |
| Wiley Bros.-Aintree Capital, LLC | 43,000 | $25.4K | 0.00% |
| R Squared Ltd | 28,099 | $16.6K | 0.01% |
| Two Sigma Securities, LLC | 24,508 | $14.5K | 0.00% |
| Two Sigma Investments, LP | 23,452 | $13.8K | 0.00% |
| StoneX Group Inc. | 19,871 | $11.7K | 0.00% |
| Two Sigma Advisers, LP | 18,300 | $10.8K | 0.00% |
| Greenberg Financial Group | 18,216 | $10.7K | 0.00% |
| Baader Bank INC | 21,364 | $7.77K | 0.00% |
| Group One Trading, L.P. | 6,662 | $3.93K | 0.00% |
| Robinswood Financial LLC | 2,557 | $1.51K | 0.00% |
| Optiver Holding B.V. | 838 | $494 | 0.00% |
| Northwestern Mutual Wealth Management Co | 500 | $295 | 0.00% |
Sold out (11)
Institutions that held Atossa Therapeutics, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Gsa Capital Partners LLP | 310,754 | $269.0K |
| Squarepoint Ops LLC | 253,343 | $219.6K |
| Commonwealth Equity Services, LLC | 46,001 | $40.0K |
| Gallagher Capital Advisors, LLC | 31,575 | $27.5K |
| NorthRock Partners, LLC | 16,750 | $14.5K |
| Jain Global LLC | 16,707 | $14.5K |
| HRT Financial LP | 16,932 | $14.0K |
| Victory Capital Management Inc | 14,864 | $12.9K |
| True Wealth Design, LLC | 29 | $26 |
| EverSource Wealth Advisors, LLC | 2 | $2 |
| Simplex Trading, LLC | 322 | $0 |
Not filed for Q4 2025 yet (3)
Institutions that held Atossa Therapeutics, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Point72 Asia (Singapore) Pte. Ltd. | 44,106 | $38.2K |
| Wolverine Trading, LLC | 18,342 | $16.0K |
| Point72 (DIFC) Ltd | 82 | $71 |