Atossa Therapeutics, Inc. (ATOS)

NASDAQ: ATOS · Real-Time Price · USD
0.799
+0.040 (5.24%)
At close: Dec 5, 2025, 4:00 PM EST
0.805
+0.006 (0.71%)
After-hours: Dec 5, 2025, 7:44 PM EST
5.24%
Market Cap 103.25M
Revenue (ttm) n/a
Net Income (ttm) -30.18M
Shares Out 129.17M
EPS (ttm) -0.23
PE Ratio n/a
Forward PE n/a
Dividend n/a
Ex-Dividend Date n/a
Volume 844,277
Open 0.780
Previous Close 0.760
Day's Range 0.767 - 0.809
52-Week Range 0.553 - 1.298
Beta 0.95
Analysts Strong Buy
Price Target 6.25 (+681.93%)
Earnings Date Nov 12, 2025

About ATOS

Atossa Therapeutics, Inc. operates as a clinical-stage biopharmaceutical company that develops medicines in the areas of unmet medical need in oncology for women breast cancer and other conditions in the United States. The company’s lead drug candidate is oral (Z)-endoxifen, an active metabolite of tamoxifen, which is in Phase II clinical trials to treat and prevent breast cancer. It also develops immunotherapy/chimeric antigen receptor therapy programs. The company was formerly known as Atossa Genetics Inc. and changed its name to Atossa Thera... [Read more]

Industry Biotechnology
Sector Healthcare
IPO Date Nov 8, 2012
Employees 15
Stock Exchange NASDAQ
Ticker Symbol ATOS
Full Company Profile

Financial Performance

Financial Statements

Analyst Forecast

According to 3 analysts, the average rating for ATOS stock is "Strong Buy." The 12-month stock price target is $6.25, which is an increase of 681.93% from the latest price.

Price Target
$6.25
(681.93% upside)
Analyst Consensus: Strong Buy
Stock Forecasts

News

Atossa Therapeutics Details Accelerated FDA Strategy to Advance (Z)-Endoxifen Across Breast Cancer Continuum

Company positioned to pursue expedited regulatory pathways in metastatic, neoadjuvant, and risk-reduction settings SEATTLE , Dec. 4, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Ato...

1 day ago - PRNewsWire

Insilico Medicine and Atossa Therapeutics Publish AI-Driven Study in Nature Scientific Reports Identifying (Z)-Endoxifen as a Potential Therapeutic Candidate for Glioblastoma

CAMBRIDGE, Mass. , Dec. 2, 2025 /PRNewswire/ -- Insilico Medicine ("Insilico"), a global leader in AI-powered drug discovery, and Atossa Therapeutics ("Atossa") (Nasdaq: ATOS), a clinical-stage biopha...

3 days ago - PRNewsWire

Atossa Highlights Emerging Opportunity for (Z)-Endoxifen in Duchenne Muscular Dystrophy, Including Symptomatic Female Carriers, Following Peer-Reviewed Publication and Scientific Presentation

Published article outlines rationale for multi-pathway efficacy for (Z)-endoxifen in Duchenne Muscular Dystrophy (DMD); November scientific presentation to spotlight potential in Duchenne carrier–asso...

18 days ago - PRNewsWire

Atossa Therapeutics Reports Third Quarter 2025 Financial Results and Provides a Corporate Update

Company reports progress to file planned IND for (Z)-endoxifen in mBC with CRO selection and streamlined development programs for potential 2026-NDA enabling activities, including a Type C meeting wit...

23 days ago - PRNewsWire

Atossa Therapeutics Announces Acceptance of Four Abstracts Highlighting (Z)-Endoxifen Research for Presentation at the 2025 San Antonio Breast Cancer Symposium

Studies highlight findings in the use of (Z)-endoxifen to advance breast cancer treatment and prevention SEATTLE , Nov. 6, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or th...

4 weeks ago - PRNewsWire

Atossa Therapeutics Highlights Progress in RECAST™ DCIS Platform Trial at Early Detection Research Conference; Laura Esserman, MD, MBA, to Discuss Active-Surveillance Strategy and Novel Endocrine Agents

Investor-focused update underscores enrollment momentum, biomarker strategy, and near-term data readouts designed to de-risk development of (Z)-Endoxifen and other endocrine therapies for DCIS SEATTLE...

6 weeks ago - PRNewsWire

Atossa Therapeutics to Present at the Maxim Growth Summit 2025

Invites New Investors to Learn More About $ATOS SEATTLE , Oct. 15, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company...

7 weeks ago - PRNewsWire

Atossa Appoints Mark Daniel, CPA, as Chief Financial Officer to Lead Finance, Systems, and Capital Strategy for Commercial Readiness

25+ year life-sciences finance leader brings revenue-forecasting rigor, public-company controls, and capital-markets experience as Atossa prepares for commercial operations with (Z)-endoxifen SEATTLE ...

7 weeks ago - PRNewsWire

Atossa Advances Global Patent Strategy for Z-Endoxifen with New Protection in Israel and Ongoing Renewals

Portfolio covers high-purity Z-endoxifen enteric formulations, performance characteristics, and manufacturing methods, part of Atossa's multi-jurisdiction IP strategy to support clinical and commercia...

7 weeks ago - PRNewsWire

Atossa Therapeutics Streamlines EVANGELINE Breast Cancer Clinical Trial to Prioritize for 2026 NDA-Enabling Activities

Changes are expected to reduce future study costs, accelerate objective readouts, and extend operating runway under current plans SEATTLE , Oct. 6, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasd...

2 months ago - PRNewsWire

Atossa Therapeutics Names Janet R. Rea, MSPH, as Senior Vice President, R&D to Accelerate (Z)-Endoxifen Toward Key Regulatory Milestones

Veteran development leader with successful regulatory approvals record returns to lead late-stage clinical and regulatory programs to address multiple unmet clinical needs SEATTLE , Oct. 1, 2025 /PRNe...

2 months ago - PRNewsWire

Atossa Therapeutics Appoints CORE IR for Investor Relations, Shareholder Communications and Public Relations Services

SEATTLE, Sept. 17, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (Nasdaq: ATOS; “Atossa” or the “Company”), a clinical-stage biopharmaceutical company developing new approaches in breast cancer t...

2 months ago - GlobeNewsWire

Atossa Therapeutics Announces Regulatory Strategy Aimed at Accelerating Development of Low-Dose (Z)-Endoxifen for Breast Cancer Risk Reduction

Type C FDA Meeting Requested, Update Expected by Year-End 2025 SEATTLE , Sept. 8, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS; "Atossa" or the "Company") announced today it has reques...

3 months ago - PRNewsWire

Atossa Therapeutics CEO to Discuss Clinical Progress and Upcoming Milestones at 27th Annual H.C. Wainwright Global Investment Conference

Dr. Steven Quay, Chairman and Chief Executive Officer to participate in Fireside Chat with Emily Bodnar, HCW Biotech Research Analyst SEATTLE , Aug. 28, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. ...

3 months ago - PRNewsWire

Atossa Therapeutics Selects PSI as Contract Research Organization for Pivotal Dose-Ranging Study of (Z)-Endoxifen in Metastatic Breast Cancer

Monotherapy Phase 2 study designed with FDA input; IND expected in Q4 2025 Topline results anticipated in 2026  Positions Atossa for transition into registrational Phase 3 development SEATTLE , Aug. 2...

3 months ago - PRNewsWire

Atossa Therapeutics Announces Second Quarter 2025 Financial Results and Provides a Corporate Update

FDA Provides Positive Feedback, Clears Path for Atossa to File IND for (Z)-Endoxifen in Metastatic Breast Cancer; FDA Indicates No Additional Toxicity Studies Required Strong I-SPY2 Results Reinforce ...

4 months ago - PRNewsWire

Atossa Therapeutics Announces Positive FDA Feedback, Advances Toward IND for (Z)-Endoxifen Clinical Program in ER+/HER2- Metastatic Breast Cancer

SEATTLE , July 29, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (NASDAQ: ATOS), a clinical-stage biopharmaceutical company developing innovative medicines in oncology, today announced positive writt...

4 months ago - PRNewsWire

Atossa Therapeutics to Present at the Jefferies Global Healthcare Conference

SEATTLE , June 2, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines for breast cance...

6 months ago - PRNewsWire

Join Atossa Therapeutics' Exclusive Live Investor Webinar and Q&A Session on May 22

SEATTLE, WASHINGTON / ACCESS Newswire / May 20, 2025 / Atossa Therapeutics, Inc. (Nasdaq:ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines f...

7 months ago - Accesswire

Atossa Therapeutics Announces Full Results from I‑SPY 2 Endocrine‑Optimization Sub‑Study Evaluating Low‑Dose (Z)‑Endoxifen

Feasibility endpoint achieved; rapid Ki‑67 suppression and substantial MRI‑confirmed tumor shrinkage observed with favorable safety profile SEATTLE , May 14, 2025 /PRNewswire/ -- Atossa Therapeutics, ...

7 months ago - PRNewsWire

Atossa Therapeutics Announces First Quarter 2025 Financial Results and Provides a Corporate Update

Announced strategic plan to advance (Z)-endoxifen for metastatic breast cancer indication  Enhanced (Z)-endoxifen intellectual property portfolio with three new U.S. patents, expanding IP portfolio to...

7 months ago - PRNewsWire

Atossa Therapeutics Announces Issuance of U.S. Patent No. 12,281,056, Including 58 Claims Covering Various Formulations for its (Z)-endoxifen Portfolio

SEATTLE, April 30, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) (“Atossa” or the “Company”), a clinical-stage biopharmaceutical company developing innovative medicines for breast ...

7 months ago - GlobeNewsWire

Atossa Therapeutics Proposes Potentially Groundbreaking Study Aimed at Reducing Interval Breast Cancer in High-Risk Women at AACR 2025

SEATTLE, April 29, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) (“Atossa” or the “Company”), a clinical-stage biopharmaceutical company developing innovative medicines for breast ...

7 months ago - GlobeNewsWire

Atossa Therapeutics Announces Issuance of U.S. Patent No. 12,275,684, Further Strengthening (Z)-endoxifen Portfolio

SEATTLE, April 22, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) (“Atossa” or the “Company”), a clinical-stage biopharmaceutical company developing innovative medicines for breast ...

8 months ago - GlobeNewsWire

Nona Biosciences and Atossa Therapeutics Partner to Discover Next-Generation Antibody Therapies for Breast Cancer

CAMBRIDGE, Mass. , April 10, 2025 /PRNewswire/ -- Nona Biosciences, a global biotechnology company providing integrated solutions from "Idea to IND" (I to ITM), ranging from target validation and anti...

8 months ago - PRNewsWire