{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-23-027849","form_type":"8-K","ticker":"ATOS","cik":"0001488039","company_name":"ATOSSA THERAPEUTICS, INC.","filed_at":"2023-10-06T23:59:59+00:00","discovered_at":"2026-05-14T18:03:29.218372+00:00","generated_at":"2026-06-10T03:21:05.864203+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Atossa Therapeutics CFO Greg Weaver resigns; Heather Rees appointed as principal financial officer","bullets":["Greg Weaver resigned as EVP and CFO effective Oct 5, 2023; resignation not due to disagreement with company.","Company waived 30-day notice period, accelerating departure to Oct 5.","Heather Rees, previously VP Finance and Accounting, appointed as principal financial and accounting officer.","Rees has been with company since 2017 as controller, then VP; prior experience includes Deloitte and independent consulting.","Weaver's termination also served as resignation from Board of Directors."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-23-027849","json":"https://secwatch.observer/filing/0001437749-23-027849.json","markdown":"https://secwatch.observer/filing/0001437749-23-027849.md","text":"https://secwatch.observer/filing/0001437749-23-027849.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1488039/000143774923027849/0001437749-23-027849-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1488039/000143774923027849/atos20231003_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T03:21:05.864203+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"0fa51e6a76","claim":"Greg Weaver resigned as Executive Vice President and Chief Financial Officer at ATOSSA THERAPEUTICS, INC..","evidence_excerpt":"Mr. Weaver tendered his resignation to pursue other opportunities and not due to any disagreement with the Company.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1488039/000143774923027849/0001437749-23-027849-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Executive Vice President and Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"c93f395ba1","claim":"Heather Rees was appointed as principal financial and accounting officer at ATOSSA THERAPEUTICS, INC..","evidence_excerpt":"In connection with Mr. Weaver’s resignation, the Company has appointed Heather Rees, age 51, as the Company’s principal financial and accounting officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1488039/000143774923027849/0001437749-23-027849-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"principal financial and accounting officer"}],"fact_type":"executive_change"},{"claim_id":"e004031706","claim":"Greg Weaver resigned as member of the Board of Directors at ATOSSA THERAPEUTICS, INC..","evidence_excerpt":"Mr. Weaver’s termination of service as an employee served as his resignation from all other positions with the Company, including as a member of the Board of Directors.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1488039/000143774923027849/0001437749-23-027849-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"member of the Board of Directors"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}