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Companies · CLSK · Finance Services · New debt · Sep 17, 2026

CleanSpark proposes $2.227B Sandersville debt, funding lease-backed buildout but adding risk

$2.227B senior secured notespartly known
$2.227B principal amount, due 2031
CLEANSPARK, INC. (CLSK) — what happened, in plain English, and what it means versus what the market expected.

CleanSpark is transitioning from a Bitcoin-mining-led infrastructure business toward building and leasing large-scale AI/HPC data centers. Sandersville is the first major contracted project in that strategy: the company previously announced a 20-year lease with $6.6 billion of expected contracted revenue, while its latest quarterly update said the anticipated equity contribution had been fully funded.

The financing advances the Sandersville buildout, but it is not yet funding in hand. The subsidiary intends to issue $2.227 billion of senior secured notes due 2031, with proceeds earmarked for remaining construction costs, reimbursement of prior equity contributions, and debt-service reserves. 〔0〕 The July lease made a large project-finance transaction the logical next step; the new information is the proposed size and secured structure, not the basic need to finance Sandersville.

Filing figureDetail
Proposed principal$2.227 billion
Maturity2031
SecurityFirst-priority liens on substantially all issuer and project-company assets, excluding certain property
GuaranteeCleanSpark completion guarantee if note proceeds are insufficient
Intended useRemaining Sandersville buildout, reimbursement of prior equity contributions, debt-service reserves

The structure shifts construction funding toward project-level debt, while leaving CleanSpark exposed to overruns. The notes would be secured by the project assets and guaranteed by the direct project subsidiary, but CleanSpark separately promises to fund the issuer as needed to complete the facility if the bond proceeds fall short. 〔1〕 That helps support completion of a lease-backed asset, but the filing gives no coupon, covenants, financing cost, or final proceeds, so the economic burden remains unclear.

The immediate signal is therefore execution progress with meaningful financing uncertainty. The proposed debt gives CleanSpark a path to convert the Sandersville lease into an operating data center, but the offering remains conditional and may not close on the announced terms. 〔2〕

Bottom line: This is an important funding step for CleanSpark’s shift into contracted AI/HPC infrastructure, but it is a proposed, highly secured financing—not a completed capital raise. Its business impact will depend on whether the notes close and whether construction stays within the funded amount. I

Read the original 8-K on SEC EDGAR ↗
More from CLEANSPARK, INC. (CLSK)
Sep 25, 2026CleanSpark closes $2.276B Sandersville debt, funding AI data-center buildoutSep 18, 2026CleanSpark prices $2.276B Sandersville debt, funding buildout but adding parent riskAug 6, 2026Revenue and EPS missed badly; Sandersville funding limits the strategic damageAll CLSK filings, decoded →
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