{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-23-015785","form_type":"8-K","ticker":"SLNH","cik":"0000064463","company_name":"Soluna Holdings, Inc","filed_at":"2023-05-08T23:59:59+00:00","discovered_at":"2026-05-14T18:03:41.929209+00:00","generated_at":"2026-06-15T14:42:36.886302+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"John Belizaire appointed CEO of Soluna Holdings; Toporek becomes Executive Chairman","bullets":["Effective May 1, 2023, John Belizaire becomes CEO of Soluna Holdings, Inc., in addition to his role as CEO of Soluna Computing.","Michael Toporek resigned as CEO and was elected Executive Chairman of the Board, succeeding William Phelan.","William Phelan becomes Lead Independent Director as part of the planned succession.","The transition was previously announced on March 20, 2023, and is effective immediately."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-23-015785","json":"https://secwatch.observer/filing/0001493152-23-015785.json","markdown":"https://secwatch.observer/filing/0001493152-23-015785.md","text":"https://secwatch.observer/filing/0001493152-23-015785.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/64463/000149315223015785/0001493152-23-015785-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/64463/000149315223015785/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-15T14:42:36.886302+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":"21e6fc90b9","claim":"Michael Toporek was elected as Executive Chairman of the Board at Soluna Holdings, Inc.","evidence_excerpt":"Michael Toporek, the Company’s prior Chief Executive Officer, has been elected to serve as Executive Chairman of the Board of Directors, effective as of May 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/64463/000149315223015785/0001493152-23-015785-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Executive Chairman of the Board"}],"fact_type":"executive_change"},{"claim_id":"932624b376","claim":"John Belizaire was appointed as Chief Executive Officer at Soluna Holdings, Inc.","evidence_excerpt":"The Company has appointed John Belizaire, the Chief Executive Officer of the Company’s Soluna Computing, Inc. subsidiary (“SCI’) and a current director of the Company, to serve as the Chief Executive Officer of the Company, effective as of May 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/64463/000149315223015785/0001493152-23-015785-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"},{"claim_id":"b970f10808","claim":"Michael Toporek resigned as Chief Executive Officer at Soluna Holdings, Inc.","evidence_excerpt":"Effective as of May 1, 2023, Michael Toporek resigned as Chief Executive Officer of Soluna Holdings, Inc. (the “Company”) in connection with the appointment of John Belizaire as Chief Executive Officer as part of the Company’s previously announced succession plan.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/64463/000149315223015785/0001493152-23-015785-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}