{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-057308","form_type":"8-K","ticker":"SLS","cik":"0001390478","company_name":"SELLAS Life Sciences Group, Inc.","filed_at":"2025-06-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:48.141124+00:00","generated_at":"2026-05-19T18:14:05.548610+00:00","sec_items":["4.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"SELLAS appoints Baker Tilly as new auditor after Moss Adams merger","bullets":["Moss Adams merged into Baker Tilly US, LLP; auditors resigned June 3, 2025.","Audit committee approved Baker Tilly as successor independent auditor for FY2025.","No disagreements or reportable events occurred in prior fiscal years or interim.","Moss Adams' reports on 2024/2023 financials included going-concern explanatory paragraph."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-057308","json":"https://secwatch.observer/filing/0001104659-25-057308.json","markdown":"https://secwatch.observer/filing/0001104659-25-057308.md","text":"https://secwatch.observer/filing/0001104659-25-057308.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1390478/000110465925057308/0001104659-25-057308-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1390478/000110465925057308/tm2517225d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-19T18:14:05.548610+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":"38b2ec313759d21c30fb955d80309694058a857b","claim":"SELLAS Life Sciences Group, Inc. engaged Baker Tilly US, LLP as its auditor.","evidence_excerpt":"On June 3, 2025, the Company engaged Baker Tilly as the Company’s new independent registered public accounting firm for the fiscal year ending December 31, 2025.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1390478/000110465925057308/0001104659-25-057308-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"engagement"},{"label":"Auditor","value":"Baker Tilly US, LLP"}],"fact_type":"auditor_change"},{"claim_id":"9e556ba8e34b17869ce00983a3493d15dab73b85","claim":"Moss Adams LLP resigned as auditor of SELLAS Life Sciences Group, Inc..","evidence_excerpt":"Moss Adams has resigned as the auditors of the Company and on June 3, 2025, the Audit Committee of the Company’s Board of Directors accepted the resignation of Moss Adams and approved the appointment of Baker Tilly, as the successor to Moss Adams, as the Company’s independent registered public accounting firm.","evidence_source":"SEC 8-K Item 4.01/4.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1390478/000110465925057308/0001104659-25-057308-index.htm","confidence":0.9,"family_label":"Auditor Changes","details":[{"label":"Action","value":"resignation"},{"label":"Auditor","value":"Moss Adams LLP"},{"label":"Successor","value":"Baker Tilly US, LLP"}],"fact_type":"auditor_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}