secwatch.observer — SEC 8-K summary
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Issuer:     Grayscale Horizen Trust (ZEN) (HZEN)
CIK:        0001748945
Form:       8-K
Filed at:   2025-10-14T23:59:59+00:00
Accession:  0001193125-25-239051
Event type: leadership
Sentiment:  neutral
Materiality: 0.30
Item codes: 5.02
LLM model:  deepseek-v4-flash:cloud@v2

Grayscale parent GSOIH: Matthew Kummell resigns, Simon Koster appointed director
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- Matthew Kummell stepped down as director of GSOIH, the sole managing member of Grayscale Operating, effective Oct 13, 2025.
- Simon Koster appointed director of GSOIH; he is CSO of Digital Currency Group, managing a portfolio of 250+ early-stage firms.
- Koster also serves on boards of Foundry, Luno (since 2023), Fortitude (2024), and Yuma (2025), all Grayscale affiliates.
- No reason given for Kummell's departure; Koster's appointment approved by GSOIH on the same date.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1748945/000119312525239051/0001193125-25-239051-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1748945/000119312525239051/hzen-20251013.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-239051

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer