Atossa Therapeutics, Inc.

One CVR will attach to each outstanding share of Atossa common stock as of the close of business on October 19, 2026, and shares and CVRs will transfer together while stapled Shares issued after October 19, 2026 will also carry one attached CVR, subject to the terms of the CVR Agreement SEATTLE, Oct. 19, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines in oncology and other areas of significant unmet need, today confirmed that each outstanding share of Atossa common stock will begin trading with one stapled contingent value right ("CVR") as of the close of business today, October 19, 2026. Under the terms of the Stapled Contingent Value Rights Agreement (the "CVR Agreement") with VStock Transfer, LLC, as rights agent, each share of Atossa common stock outstanding at the close of business on October 19, 2026 will receive, and have attached, one CVR.

Board declares one stapled CVR for each share of Atossa common stock outstanding as of October 19, 2026 record date or issued thereafter CVRs entitle holders to 25% of net proceeds from monetization of Atossa's first qualifying priority review voucher, subject to a $50 million aggregate payment cap SEATTLE, Oct. 9, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines in oncology and other areas of significant unmet need, today announced that it has entered into a definitive Stapled Contingent Value Rights Agreement (the "CVR Agreement") with VStock Transfer, LLC, as rights agent, implementing the stapled contingent value rights ("CVRs") plan previously announced on September 29, 2026. In connection with the execution of the CVR Agreement, Atossa's Board of Directors declared a dividend of one stapled CVR for each share of Atossa common stock outstanding at the close of business on October 19, 2026, the record date.

Shareholders would receive one CVR for each ATOS share held as of the record date or issued thereafter CVRs would entitle holders to 25% of net proceeds from monetization of Atossa's first qualifying priority review voucher, subject to a $50 million aggregate payment cap SEATTLE, Sept. 29, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing innovative medicines in oncology and other areas of significant unmet need, today announced that its Board of Directors has approved a plan to issue one contingent value right ("CVR") for each share of Atossa common stock to enable shareholders to share in a portion of any proceeds received from the monetization of Atossa's first qualifying rare pediatric disease priority review voucher.

Panel at Harvard University will explore translating evidence in diseases of aging into new therapeutics and regulatory pathways SEATTLE, Sept. 24, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company, today announced that Steven Quay, M.D.

SEATTLE, Aug. 7, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (Nasdaq: ATOS) (Atossa or the Company), a clinical-stage biopharmaceutical company developing novel therapies in oncology and other areas of high unmet clinical need, today announced its financial results and provided an update on recent corporate developments for the second quarter ended June 30, 2026. "During the quarter, we executed well across the business," stated Dr. Steven Quay, M.D.

Peer-reviewed preclinical study published in npj Breast Cancer identifies new chemical entities with activity in ESR1-mutant models Findings suggest potential for combination with abemaciclib SEATTLE, July 28, 2026 /PRNewswire/ -- Atossa Therapeutics, Inc. (NASDAQ: ATOS) ("Atossa" or the "Company"), a clinical-stage biopharmaceutical company developing novel therapies in oncology and other areas of significant unmet clinical need, today announced the publication of a peer-reviewed preclinical study in npj Breast Cancer evaluating five novel chemical entities structurally related to (Z)-endoxifen. The study titled, "Novel (Z)-endoxifen-related new chemical entities exhibit potent anti-cancer activity in ERα+ breast cancer," reported anti-estrogenic and anti-cancer activity across multiple estrogen receptor-positive breast cancer models, including models harboring clinically relevant activating mutations in ESR1.