secwatch.observer — SEC 8-K summary ====================================== Issuer: Aptose Biosciences Inc. (APTOF) CIK: 0000882361 Form: 8-K Filed at: 2026-03-23T23:59:59+00:00 Accession: 0001193125-26-119951 Event type: other_material Sentiment: neutral Materiality: 0.20 Item codes: 1.01, 5.02, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Aptose amends CEO Rice's employment agreement; confirms no deferred compensation owed -------------------------------------------------------------------------------- - First Amendment to CEO William Rice's employment agreement confirms no deferred compensation plan was ever established. - Rice acknowledges sole responsibility for all individual taxes, penalties, and interest on benefits paid under agreement. - Amendment clarifies that references to 'Deferred Compensation Plan' in prior agreements are disregarded. - No change in Rice's role; continues as Chairman, President, and CEO. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/882361/000119312526119951/0001193125-26-119951-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/882361/000119312526119951/d113888d8k.htm HTML page: https://secwatch.observer/filing/0001193125-26-119951 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer