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Data centers · Evidence brief

Cipher extends Barber Lake leases to 20 years, adding $5.2B

Cipher Digital + Fluidstack + unnamed leading AI lab

Primary sourceSEC summary2026-09-25
Deal structureLease amendment / follow-on 10-year AI-lab colocation commitment
GeographyBarber Lake data center, Colorado City, Texas
Infrastructure layersData centers + cloud capacity
Disclosed scaleBarber Lake contracted term extended from 10 years to 20 years; total contracted revenue raised from $3.8B to over $9B; additional 10-year AI-lab commitment expected to generate about $5.2B of incremental contracted revenue; first rent expected Q4 2026

Why it matters

The strategic read

Converts Cipher’s already-tracked Barber Lake AI conversion into a 20-year contracted stack with a second 10-year AI-lab lease after Fluidstack. The $5.2B / $9B figures are issuer contracted-revenue expectations, not cash received, and the follow-on tenant is unnamed.

Source-supported terms

What was disclosed

  1. 01

    Issuer-announced September 25, 2026 amendment and follow-on commitment, distinct from Cipher’s September 2025 original Fluidstack/Google Barber Lake hosting entry.

  2. 02

    Contracted duration moves from 10 years to 20 years. Total contracted revenue is described as rising from $3.8B to over $9B.

  3. 03

    About $5.2B is expected incremental contracted revenue from an unnamed leading AI lab’s additional 10-year lease after Fluidstack, not cash at announcement.

  4. 04

    Phased hall delivery is Q4 2026 through Q1 2027, with first rent expected Q4 2026.

  5. 05

    Cipher absorbs the first $359.3 million of budget overruns; 50% of amounts above that are reimbursed as additional rent over 20 years.

  6. 06

    The AI-lab identity, MW restatement, Google backstop status, and full lease documents are not in this exhibit.

Disclosure boundary

What is known—and what is not

Primary SEC-filed issuer release. The Fluidstack amendment is executed and the AI-lab follow-on is described as a binding commitment for a separate lease. $5.2B / $9B are contracted-revenue figures, not recognized revenue or cash. Tenant name, critical-IT MW, and complete lease documents are undisclosed. This is additive to, not a restatement of, the 2025 Barber Lake Fluidstack entry.