---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-052766"
form_type: "8-K"
ticker: "CLSK"
cik: "0000827876"
company_name: "CLEANSPARK, INC."
filed_at: "2023-10-11T23:59:59+00:00"
generated_at: "2026-06-10T01:54:14.381453+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# CleanSpark purchases 4.4 EH/s of Antminer S21 bitcoin miners; deliveries begin Jan 2024

## Summary
- Acquires 4.4 EH/s of new Antminer S21 miners with efficiency 17.5 J/TH from Bitmain.
- 20% of purchase price ($12.35 million) seller-financed, due 365 days after delivery.
- Expected to achieve total hashrate over 20 EH/s; fleet efficiency targeting 23.5 J/TH.
- Funding primarily through operating cash flows; CEO cites margin improvement.

## SEC filing metadata
- accession: 0000950170-23-052766
- form_type: 8-K
- ticker: CLSK
- cik: 0000827876
- company_name: CLEANSPARK, INC.
- filed_at: 2023-10-11T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01, 2.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/827876/000095017023052766/0000950170-23-052766-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/827876/000095017023052766/clsk-20231006.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-052766
- JSON: https://secwatch.observer/filing/0000950170-23-052766.json
- Plain text: https://secwatch.observer/filing/0000950170-23-052766.txt

## Key facts
- Material Agreements
  CLEANSPARK, INC. entered into Sales and Purchase Agreement with BITMAIN TECHNOLOGIES DELAWARE LIMITED (effective 2023-10-06).
  - Action: entry
  - Agreement: supply
  - Counterparty: BITMAIN TECHNOLOGIES DELAWARE LIMITED
  - Effective: 2023-10-06
  source text: On October 6, 2023, CleanSpark, Inc., a Nevada corporation (the "Company"), executed an agreement to purchase 4.4 exahashes per second (EH/s) of the recently announced Antminer S21 bitcoin mining machines
  evidence_url: https://www.sec.gov/Archives/edgar/data/827876/000095017023052766/0000950170-23-052766-index.htm

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