Institutional shares held 27.8 Million
63.6K calls
53.2K puts
Total value of holdings $24.2M
$55K calls
$46K puts
Market Cap $110M
126,624,000 Shares Out.
Institutional ownership 21.95%
# of Institutions 88


Latest Institutional Activity in ATOS

Top Purchases

Q2 2025
Baader Bank Aktiengesellschaft Shares Held: 10K ($8.7K)
Q2 2025
Pfg Investments, LLC Shares Held: 21.3K ($18.5K)
Q1 2025
Squarepoint Ops LLC Shares Held: 479K ($417K)
Q1 2025
Renaissance Technologies LLC Shares Held: 1.86M ($1.61M)
Q1 2025
Susquehanna International Group, LLP Shares Held: 440K ($383K)

Top Sells

Q1 2025
Ubs Group Ag Shares Held: 455K ($396K)
Q1 2025
Jpmorgan Chase & CO Shares Held: 119K ($103K)
Q1 2025
Morgan Stanley Shares Held: 284K ($247K)
Q1 2025
Goldman Sachs Group Inc Shares Held: 188K ($163K)
Q1 2025
Qube Research & Technologies LTD Shares Held: 91K ($79.2K)

About ATOS

Atossa Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on the discovery and development of medicines in the areas of oncology and infectious diseases. The company's lead program is Endoxifen, an active metabolite of tamoxifen, which is in Phase II clinical trials to treat and prevent breast cancer. It is also developing AT-H201, an inhalation therapy to improve lung function in severely ill and hospitalized COVID-19 patients; AT-301, a proprietary drug candidate for nasal administration in patients diagnosed with COVID-19; and immunotherapy/chimeric antigen receptor therapy programs for the treatment of breast cancer. It has a research agreement with Dana-Farber Cancer Institute, Inc. to support research of cytokine-coated nanoparticles for the treatment of breast cancer. The company was formerly known as Atossa Genetics Inc. and changed its name to Atossa Therapeutics, Inc. in January 2020. Atossa Therapeutics, Inc. was founded in 2008 and is headquartered in Seattle, Washington.


Insider Transactions at ATOS

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
21.2K Shares
From 2 Insiders
Open market or private purchase 21.2K shares
Sell / Disposition
0 Shares
From 0 Insiders

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