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Atossa Therapeutics, Inc.

ATOS
Healthcare|Biotechnology|US
$2.12
+0.10 (+4.95%)
DCF Value
$4.35
Tangible Book / Share
$3.01
Cash / Share
$2.93

About

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.

Stock Price

-82.7%(1Y)
1M
-12.4%
3M
-10.2%
6M
-62.1%
YTD
-76.0%
1Y
-83.1%
3Y
-80.1%
5Y
-94.8%

Pipeline Summary

9 total trials
1
Phase 1
5
Phase 2
1
Phase 3
0
Phase 4
Completed: 5Not Yet Recruiting: 1Active: 1Withdrawn: 1Terminated: 1

Active Trials (1)

(Z)-Endoxifen for the Treatment of Premenopausal Women With ER+/HER2- Breast Cancer
NCT05607004Breast Neoplasms
Phase 2Active
Enrollment: 87 participants

Key Facts

Market Cap$21.2M
Employees14 (+8% YoY)
CEOSteven C. Quay
IPO DateNov 8, 2012
Beta1.37
52-Week Range$1.7 – $14.85
Avg Volume78,219
ExchangeNASDAQ

Ownership

Float98.5%
Shares Outstanding10.0M

Recent Insider Trades

Steinhart Richard IAWARD
May 12, 202610,000 shares
Chen Shu-ChihAWARD
May 12, 202610,000 shares
Remmel H. LawrenceAWARD
May 12, 202610,000 shares
Finn JonathanAWARD
May 12, 202610,000 shares
Galli Stephen JAWARD
May 12, 202610,000 shares

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Data last updated: Nov 9, 2026, 03:57 AM