---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-072828"
form_type: "8-K"
ticker: "HZEN"
cik: "0001748945"
company_name: "Grayscale Horizen Trust (ZEN)"
filed_at: "2023-12-26T23:59:59+00:00"
generated_at: "2026-06-07T07:25:43.093165+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Grayscale Horizen Trust sponsor board reshuffles: Silbert, Murphy out; Shifke as Chairman

## Summary
- Barry Silbert and Mark Murphy resign from Grayscale Investments board effective Jan 1, 2024.
- Mark Shifke appointed Chairman; Matthew Kummell and Edward McGee join board same date.
- Shifke is DCG CFO; Kummell is DCG SVP Operations; McGee is Sponsor CFO.
- New board consists of Shifke, Kummell, McGee, and Michael Sonnenshein.

## SEC filing metadata
- accession: 0000950170-23-072828
- form_type: 8-K
- ticker: HZEN
- cik: 0001748945
- company_name: Grayscale Horizen Trust (ZEN)
- filed_at: 2023-12-26T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1748945/000095017023072828/0000950170-23-072828-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1748945/000095017023072828/hzen-20231226.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-072828
- JSON: https://secwatch.observer/filing/0000950170-23-072828.json
- Plain text: https://secwatch.observer/filing/0000950170-23-072828.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.