---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-26-030026"
form_type: "8-K"
ticker: "SLNH"
cik: "0000064463"
company_name: "Soluna Holdings, Inc"
filed_at: "2026-06-25T11:30:44+00:00"
generated_at: "2026-06-25T11:35:40.806718+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Soluna Holdings withdraws Series B Preferred Stock designation after full conversion

## Summary
- 62,500 shares of Series B Convertible Preferred converted to 6,510,416 common shares in 2026.
- Accrued dividends of $2.1 million were paid upon full conversion of the preferred shares.
- Withdrawal of Designation filed June 23, 2026, eliminating the series from the charter.
- No shares of Series B Preferred Stock remain outstanding after the conversion.

## SEC filing metadata
- accession: 0001493152-26-030026
- form_type: 8-K
- ticker: SLNH
- cik: 0000064463
- company_name: Soluna Holdings, Inc
- filed_at: 2026-06-25T11:30:44+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/64463/000149315226030026/0001493152-26-030026-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/64463/000149315226030026/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-26-030026
- JSON: https://secwatch.observer/filing/0001493152-26-030026.json
- Plain text: https://secwatch.observer/filing/0001493152-26-030026.txt

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