{"schema_version":"secwatch.filing_event.v1","accession":"0000950103-24-006874","form_type":"8-K","ticker":"HZEN","cik":"0001748945","company_name":"Grayscale Horizen Trust (ZEN)","filed_at":"2024-05-20T23:59:59+00:00","discovered_at":"2026-05-14T18:03:19.877837+00:00","generated_at":"2026-06-01T13:08:39.748113+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Grayscale Horizen Trust sponsor CEO transition: Peter Mintzberg to succeed Sonnenshein","bullets":["Peter Mintzberg appointed CEO of Grayscale Investments, effective August 15, 2024; Michael Sonnenshein steps down immediately.","Edward McGee, CFO, will serve as interim principal executive officer until Mintzberg's start date.","Mintzberg joins from Goldman Sachs (Global Head of Strategy, Asset & Wealth Management); prior roles at BlackRock, Invesco.","Sonnenshein grew AUM from $60M to ~$30B and led court victory enabling first spot Bitcoin ETF uplisting."],"urls":{"canonical":"https://secwatch.observer/filing/0000950103-24-006874","json":"https://secwatch.observer/filing/0000950103-24-006874.json","markdown":"https://secwatch.observer/filing/0000950103-24-006874.md","text":"https://secwatch.observer/filing/0000950103-24-006874.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1748945/000095010324006874/0000950103-24-006874-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1748945/000095010324006874/dp211409_8k-hzen.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-01T13:08:39.748113+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":"a3e8ae28b5","claim":"Peter Mintzberg was appointed as Chief Executive Officer at Grayscale Horizen Trust (ZEN).","evidence_excerpt":"On May 20, 2024, Grayscale Investments, LLC (“Grayscale”), the sponsor of Grayscale Horizen Trust (ZEN) (the “Company”), announced that it has approved the appointment of Peter Mintzberg to serve as Grayscale’s new Chief Executive Officer and the principal executive officer of the Company, and a member of the Board of Directors of Grayscale, effective August 15, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1748945/000095010324006874/0000950103-24-006874-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":"e8acad5bbf","claim":"Edward McGee changed role as interim principal executive officer at Grayscale Horizen Trust (ZEN).","evidence_excerpt":"Mr. Edward McGee, the Chief Financial Officer of Grayscale and principal financial officer of the Company, will serve as principal executive officer on an interim basis until Mr. Mintzberg’s commencement date.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1748945/000095010324006874/0000950103-24-006874-index.htm","confidence":0.9,"family_label":"Executive change","details":[{"label":"Action","value":"serving as interim"},{"label":"Role","value":"interim principal executive officer"}],"fact_type":"executive_change"},{"claim_id":"ecc90d8b46","claim":"Michael Sonnenshein departed as Chief Executive Officer at Grayscale Horizen Trust (ZEN).","evidence_excerpt":"Mr. Mintzberg will succeed Michael Sonnenshein, the current Chief Executive Officer of Grayscale and the principal executive officer of the Company, who has decided to step down from his position, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1748945/000095010324006874/0000950103-24-006874-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"stepped down"},{"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"}