---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-035634"
form_type: "8-K"
ticker: "HZEN"
cik: "0001748945"
company_name: "Grayscale Horizen Trust (ZEN)"
filed_at: "2024-03-25T23:59:59+00:00"
generated_at: "2026-06-04T08:33:28.462043+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Grayscale Horizen Trust amends definition of 'Business Day' in Trust Agreement

## Summary
- Amendment changes Business Day from bank closure to national securities exchange closure in NYC.
- Effective March 22, 2024; no financial impact or operational change.
- Modifies definition only; all other terms of Trust Agreement unchanged.

## SEC filing metadata
- accession: 0000950170-24-035634
- form_type: 8-K
- ticker: HZEN
- cik: 0001748945
- company_name: Grayscale Horizen Trust (ZEN)
- filed_at: 2024-03-25T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1748945/000095017024035634/0000950170-24-035634-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1748945/000095017024035634/hzen-20240322.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-035634
- JSON: https://secwatch.observer/filing/0000950170-24-035634.json
- Plain text: https://secwatch.observer/filing/0000950170-24-035634.txt

## Key facts
- Material Agreements
  Grayscale Horizen Trust (ZEN) amended Amendment No. 3 with Delaware Trust Company (effective 2024-03-22).
  - Action: amendment
  - Counterparty: Delaware Trust Company
  - Effective: 2024-03-22
  source text: On March 22, 2024, Grayscale Investments, LLC, the sponsor (the “Sponsor”) of Grayscale Horizen Trust (ZEN) (the “Trust”) and the Delaware Trust Company, the trustee (the “Trustee”) of the Trust entered into Amendment No. 3 (the “Amendment No. 3”) to the Trust’s Amended and Restated Declaration of Trust and Trust Agreement (the “Trust Agreement”)
  evidence_url: https://www.sec.gov/Archives/edgar/data/1748945/000095017024035634/0000950170-24-035634-index.htm

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