{"schema_version":"secwatch.filing_event.v1","accession":"0001171843-22-004578","form_type":"8-K","ticker":"APTOF","cik":"0000882361","company_name":"Aptose Biosciences Inc.","filed_at":"2022-06-28T23:59:59+00:00","discovered_at":"2026-05-14T18:04:04.096626+00:00","generated_at":"2026-06-24T22:47:32.240002+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Aptose Biosciences appoints Fletcher Payne as SVP and CFO with $430k base salary and 1M option grant","bullets":["Appointment effective June 27, 2022; Payne reports to CEO.","Base salary of $430,000; eligible for annual discretionary bonus up to 40% of base.","Subject to board approval, granted options to purchase 1,000,000 common shares.","Severance: without cause or for good reason – one year salary lump sum, average bonus, COBRA up to 12 months.","Payne previously CFO at Synapse, Catalyst Bioscience, CytomX, Plexxikon, and others."],"urls":{"canonical":"https://secwatch.observer/filing/0001171843-22-004578","json":"https://secwatch.observer/filing/0001171843-22-004578.json","markdown":"https://secwatch.observer/filing/0001171843-22-004578.md","text":"https://secwatch.observer/filing/0001171843-22-004578.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/882361/000117184322004578/0001171843-22-004578-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/882361/000117184322004578/f8k_062822.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-24T22:47:32.240002+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":"8c52e4db23","claim":"Fletcher Payne was appointed as Senior Vice President and Chief Financial Officer at Aptose Biosciences Inc..","evidence_excerpt":"On June 27, 2022, Aptose Biosciences Inc. (“we” or the “Company”) appointed Mr. Fletcher Payne as its Senior Vice President and Chief Financial Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/882361/000117184322004578/0001171843-22-004578-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Senior Vice President and Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}