Atossa Therapeutics Inc.
ATOS | NASDAQ
$2.28
+$0.03 (+1.33%)
Sep 22, 2026, 2:30 PM ET · Market open
Company Profile
Atossa Therapeutics, Inc. is a clinical-stage biopharmaceutical firm dedicated to developing innovative medicines. Their primary focus lies in addressing unmet medical needs in women's oncology, especially breast cancer, along with other conditions, within the United States. The company's flagship therapeutic candidate is oral (Z)-endoxifen. This compound, an active metabolite derived from tamoxifen, is currently undergoing Phase II clinical trials for both the treatment and prevention of breast cancer. Beyond this, Atossa is also advancing immunotherapy and chimeric antigen receptor (CAR) therapy programs. Established in 2008, the company adopted its current name, Atossa Therapeutics, Inc., in January 2020, having previously operated as Atossa Genetics Inc. It is headquartered in Seattle, Washington.
Key Executives
| Name | Position |
|---|---|
| Steven C. Quay FCAP | Chairman, Chief Executive Officer & President |
| Mark Daniel | Chief Financial Officer |
| Delly Behen | Senior Vice President of Business Operations |
| Janet Rose Rea MSPH | Senior Vice President of Research & Development |
| Richard Graydon | Interim Chief Medical Officer |
Latest SEC Filings
| Date | Type | Title |
|---|---|---|
| Aug 07, 2026 | 8-K | Current Report |
| Aug 07, 2026 | 10-Q | Quarterly Report |
| Jun 12, 2026 | 424B5 | Filing |
| Jun 11, 2026 | 8-K | Current Report |
| May 14, 2026 | 4 | Filing |
| May 14, 2026 | 4 | Filing |
| May 14, 2026 | 4 | Filing |
| May 14, 2026 | 4 | Filing |
| May 14, 2026 | 4 | Filing |
| May 14, 2026 | 4 | Filing |
Atossa Therapeutics Inc.
| Country | United States |
| IPO Date | Nov 7, 2012 |
| Industry | Biotechnology |
| Sector | Healthcare |
| Employees | 16 |
| CEO | Steven C. Quay |
Contact Details
448 NW Market Street Seattle,
Washington 98107 United States
Stock Details
| Ticker Symbol | ATOS |
| Exchange | NASDAQ |
| Fiscal Year | January - December |
| Reporting Currency | USD |
| CIK Code | 0001488039 |
| CUSIP Number | 04962H704 |
| ISIN Number | US04962H7044 |
| SIC Code | 2834 |
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