Cost reimbursement framework for Barber Lake Facility ($359.3M cost cap)
Company: Cipher Mining - Project: Barber Lake Facility
The claim, verbatim
Company, Fluidstack, and leading AI lab established cost reimbursement framework where Company bears first $359.3 million of costs in excess of initial budget, with tenants reimbursing 50% of any costs above that amount over 20-year aggregate term
Source (primary)
Cipher Mining 8-K filed 2026-09-25 (SEC EDGAR, sec_filing)
View cached copy (2026-09-26)Live source ↗
Quote: “the Company, Fluidstack and the leading AI lab established a cost reimbursement framework, pursuant to which the Company will bear the first $359.3 million of costs in excess of the initial budgeted amount under the Barber Lake Lease. The tenant will reimburse the Company over the aggregate twenty-year term for 50% of any such costs above that amount”
How we checked this
Checked on September 28, 2026. The cited source supports part of this claim, but not all of it.
The filing confirms the framework, the $359.3 million first-loss amount and the 50% reimbursement over twenty years. However, it attributes the reimbursement to 'the tenant', singular, and does not say that both tenants will reimburse.
Confirmed in the source:
- The Company, Fluidstack and the leading AI lab established a cost reimbursement framework
- The Company will bear the first $359.3 million of costs in excess of the initial budgeted amount under the Barber Lake Lease
- 50% of costs above that amount will be reimbursed to the Company over the aggregate twenty-year term
We could not confirm this from the cited source:
- That multiple tenants (both Fluidstack and the AI lab) will make the 50% reimbursement; the filing refers only to 'the tenant', singular, without naming which one
That does not mean it is false — only that this source does not establish it, as of the date above. If we find a source that settles it, we will re-check and update this page.
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1819989/000181998926000043/cifr-20260924.htm) in full (9,819 characters, retrieved September 26, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Cipher Mining 8-K filed 2026-09-25
Quote: “the Company, Fluidstack and the leading AI lab established a cost reimbursement framework, pursuant to which the Company will bear the first $359.3 million of costs in excess of the initial budgeted amount under the Barber Lake Lease. The tenant will reimburse the Company over the aggregate twenty-year term for 50% of any such costs above that amount”