{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-22-042318","form_type":"8-K","ticker":"FISN","cik":"0001918102","company_name":"DEEP FISSION, INC.","filed_at":"2022-07-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:57.655325+00:00","generated_at":"2026-06-24T07:42:45.240411+00:00","sec_items":["4.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Surfside Acquisition appoints Grassi & Co. as new independent auditor for FY2022","bullets":["Grassi & Co. appointed as independent registered public accounting firm for fiscal year ending Dec 31, 2022.","No prior consultations with Grassi on accounting principles or audit opinions.","No disagreements or reportable events with the predecessor auditor occurred.","Change effective July 22, 2022."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-22-042318","json":"https://secwatch.observer/filing/0001213900-22-042318.json","markdown":"https://secwatch.observer/filing/0001213900-22-042318.md","text":"https://secwatch.observer/filing/0001213900-22-042318.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1918102/000121390022042318/0001213900-22-042318-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1918102/000121390022042318/ea163444-8k_surfside.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-24T07:42:45.240411+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}