---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-25-012844"
form_type: "8-K"
ticker: "SLNH"
cik: "0000064463"
company_name: "Soluna Holdings, Inc"
filed_at: "2025-09-09T23:59:59+00:00"
generated_at: "2026-05-17T07:25:11.131763+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Soluna surpasses 1 GW milestone; starts construction on Project Kati 1; Galaxy expands to 48 MW

## Summary
- Surpassed 1 GW of renewable-powered computing with addition of Project Gladys (150 MW wind) and Project Fei (100 MW solar).
- Galaxy Digital expands to 48 MW at Project Kati 1, total site 83 MW; civil construction started, energization expected December 2025.
- Q2'25 steady gross margin; three-month Adjusted EBITDA up +$2.3M since Q3 2024; Dorothy 2 Phase 2 (32 MW) operational.
- David Michaels appointed interim CFO (board member, previously interim CFO in 2023).
- Project Kati 1 tax abatement approved; prepurchased equipment delivered; next phase substation upgrade to start October.

## SEC filing metadata
- accession: 0001493152-25-012844
- form_type: 8-K
- ticker: SLNH
- cik: 0000064463
- company_name: Soluna Holdings, Inc
- filed_at: 2025-09-09T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/64463/000149315225012844/0001493152-25-012844-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/64463/000149315225012844/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-25-012844
- JSON: https://secwatch.observer/filing/0001493152-25-012844.json
- Plain text: https://secwatch.observer/filing/0001493152-25-012844.txt

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