Atossa Therapeutics, Inc., a clinical-stage biopharmaceutical company, discovers and develops 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-301, a proprietary drug candidate for nasal administration in patients diagnosed with COVID-19; AT-H201, a drug candidate to improve lung function in COVID-19 patients; and immunotherapy/chimeric antigen receptor therapy programs for the treatment of breast cancer. Atossa Therapeutics, Inc. has a research agreement with Dana-Farber Cancer Institute, Inc. to support research of cytokine-coated nanoparticles for the potential 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.
IPO Year: 2012
Exchange: NASDAQ
Website: atossatherapeutics.com
4 - ATOSSA THERAPEUTICS, INC. (0001488039) (Issuer)
4 - ATOSSA THERAPEUTICS, INC. (0001488039) (Issuer)
4 - ATOSSA THERAPEUTICS, INC. (0001488039) (Issuer)
SEATTLE, June 2, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (NASDAQ:ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, today announced that Dr. Steven Quay, M.D., Ph.D., President and Chief Executive Officer, will present at the Jefferies Global Healthcare Conference on Thursday, June 5, 2025 at 7:35 a.m. Eastern Time. ATOS) is a clinical-stage biopharmaceutical company dedicated to transforming breast cancer treatment through innovative science and patient-focused solutions. The company's lead product candidate, (Z)-endoxifen, is a highly pote
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, Inc. (NASDAQ:ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, today reported full results from the Phase 2 Endocrine Optimization Pilot (EOP) sub‑study within the I‑SPY 2 TRIAL evaluating low‑dose oral (Z)‑endoxifen (10 mg daily) as a neoadjuvant treatment in 20 women with stage II/III estrogen‑receptor–positive (ER+), HER2‑negative breast cancer. ATOS) i
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 more than 200 patent claims related to (Z)-endoxifen Ended first quarter 2025 with $65.1 million in cash and cash equivalents and no debt SEATTLE, May 13, 2025 /PRNewswire/ -- Atossa Therapeutics, Inc. (NASDAQ:ATOS) (Atossa or the Company), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, today announced its financial results for the first quarter ended March 31, 2025 and provided an update on recent company developments.
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 cancer, today announced that the United States Patent and Trademark Office (USPTO) has granted a new patent (U.S. Patent No. 12,281,056) directed to highly pure and stable enteric oral formulations comprising (Z)-endoxifen as well as therapeutic methods of using those oral formulations. The newly granted patent includes 58 claims covering (Z)-endoxifen formulations, including various levels of purity and stability as well as methods of using those formulations. This patent provides additio
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 cancer, today outlined a framework for a pioneering Phase 3 clinical study titled SMART 2.0. The proposed trial would investigate the potential of oral (Z)-endoxifen, a potent Selective Estrogen Receptor Modulator (SERM) for estrogen receptor inhibition, to significantly reduce interval breast cancer in women identified as high-risk through advanced mammographic screening techniques. The proposed SMART 2.0 study was presented at the American Association for Cancer Research (AACR) Annual Meeting
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 cancer, today announced that the United States Patent and Trademark Office (USPTO) has granted a new patent (U.S. Patent No. 12,275,684) directed to enteric oral formulations comprising (Z)-endoxifen as well as methods of treating subjects with those oral formulations. This newly granted patent further fortifies Atossa's intellectual property portfolio surrounding its proprietary (Z)-endoxifen formulations, encompassing novel compositions and methods related to (Z)-endoxifen, a potent Selectiv
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 antibody discovery through preclinical research, today announced a research collaboration with Atossa Therapeutics Inc. (NASDAQ:ATOS). The collaboration leverages Nona's proprietary H2L2 Harbour Mice® platform to identify next-generation therapeutic candidates for breast cancer. Nona Biosciences' proprietary Harbour Mice® platform employs transgenic mice to generate fully human monoclo
Ended 2024 with $71.1 million of cash and cash equivalents and no debt Conference Call and Webcast Scheduled for Tuesday, March 25, 2025, at 8:30 a.m. Eastern Time SEATTLE, March 25, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (NASDAQ:ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, today announced its financial results for the full year ended December 31, 2024 and provided an update on recent company developments. Fourth Quarter and Early 2025 Highlights Strategic Decision to Pursue Metastatic Breast Cancer Indication: Atossa plans to advance its lead program, (Z)-endoxifen, to target metastatic bre
SEATTLE, March 20, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (NASDAQ:ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, today announced that the Company will host a conference call and live audio webcast on Tuesday, March 25, 2025, at 8:30 a.m. ET, to discuss its corporate and financial results for the fourth quarter and full-year 2024. The webcast will be available at the investor relations section of the Company's website at atossatherapeutics.com. Alternatively, to access the conference call by telephone, U.S.-based callers should dial 1-800-836-8184 and international listeners should dial 1-646-357-
SEATTLE, March 11, 2025 (GLOBE NEWSWIRE) -- Atossa Therapeutics, Inc. (NASDAQ:ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company dedicated to the prevention and treatment of breast cancer, today announced its strategic decision to pursue a metastatic breast cancer indication for (Z)-endoxifen. Atossa believes that pursuing a metastatic indication may offer a more efficient regulatory pathway to deliver (Z)-endoxifen to women in urgent need, and simultaneously plans to work with the FDA to advance additional indications, such as breast cancer prevention and neoadjuvant therapy, that often require larger and longer clinical trials. Addressing the High Unmet Need