---
schema_version: "secwatch.filing_event.v1"
accession: "0001641172-25-022807"
form_type: "8-K"
ticker: "SLNH"
cik: "0000064463"
company_name: "Soluna Holdings, Inc"
filed_at: "2025-08-08T23:59:59+00:00"
generated_at: "2026-05-17T16:52:55.271065+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Soluna Holdings CFO John Tunison resigns; board member David Michaels named interim CFO

## Summary
- CFO John Tunison resigns effective Aug 21, 2025; departure not due to any disagreement with company.
- Board member David Michaels named interim CFO and Treasurer; 4-month consulting agreement at $30,000 per month.
- Company has commenced search for a permanent CFO.
- Tunison departing to accept similar CFO role at a privately held company.

## SEC filing metadata
- accession: 0001641172-25-022807
- form_type: 8-K
- ticker: SLNH
- cik: 0000064463
- company_name: Soluna Holdings, Inc
- filed_at: 2025-08-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/64463/000164117225022807/0001641172-25-022807-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/64463/000164117225022807/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001641172-25-022807
- JSON: https://secwatch.observer/filing/0001641172-25-022807.json
- Plain text: https://secwatch.observer/filing/0001641172-25-022807.txt

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