Key Highlights

● New Lease: Cipher Digital signed a 10-year Lease with an unnamed “leading AI laboratory” at its Barber Lake Data Center campus in Colorado City, Texas.

● Revenue Impact: The new commitment adds roughly $5.2 billion in incremental contracted revenue, taking the site's total contracted Revenue above $9 billion.

● Combined Term: Layered onto the existing Fluidstack USA II Inc. lease, the site's combined contracted term now stretches to 20 years.

● Cost Sharing: Cipher will absorb the first $359.3 million of construction cost overruns, after which the tenant reimburses 50% of additional costs through higher rent.

Cipher Digital Inc. (NASDAQ:CIFR) told investors in an 8-K filed September 25 that it has amended its lease for the Barber Lake data center campus in Colorado City, Texas, and locked in a new 10-year lease commitment from an unnamed “leading AI laboratory.” Layered onto the existing lease with Fluidstack USA II Inc., the new commitment stretches the property's combined contracted term to 20 years and adds roughly $5.2 billion of incremental contracted revenue, according to the filing.

What the Filing Discloses

Cipher reported the news under Item 7.01, Regulation FD Disclosure, and Item 8.01, Other Events, meaning the company is sharing information it considers material but that does not fit a more specific 8-K category such as a new material contract. The underlying documents are an amendment to the existing Barber Lake Lease with Fluidstack, the company's current large tenant at the site, plus a new binding lease agreement with the unnamed AI laboratory that begins once Fluidstack's initial term ends.

Cipher, which designs, owns and operates industrial-scale data centers built for high-performance computing workloads, said the amendment revises the facility's design and updates its delivery schedule. Individual data halls at Barber Lake are now expected to be delivered in phases between the fourth quarter of 2026 and the first quarter of 2027, with rent on each hall starting as it is handed over, rather than all at once when the whole campus is complete.

The Economics of the New Lease

According to the accompanying press release, the original Barber Lake lease was valued at about $3.8 billion in contracted revenue over its term. The new 10-year commitment from the AI laboratory takes total contracted revenue at the site to more than $9 billion, an increase the company attributes almost entirely to the roughly $5.2 billion the new lease is projected to add. Cipher said the terms of the new lease “are substantially consistent with the Barber Lake Lease,” suggesting a similar rent and reimbursement structure rather than a fresh negotiation from scratch.

The filing also lays out how construction cost overruns will be shared. Cipher has agreed to absorb the first $359.3 million of any cost overruns itself. Beyond that threshold, the tenant will reimburse 50% of additional costs through higher rent, a mechanism the company says preserves a contracted rate of return even if construction costs run higher than budgeted. The filing does not specify a cap on tenant reimbursement above the threshold, nor does it name the AI laboratory or quantify the size, in megawatts, of the capacity leased.

Reading the Disclosure

Because the counterparty is described only as “a leading AI laboratory,” outside readers cannot independently verify which company has signed on, and the filing gives no revenue-recognition timeline beyond noting that rent begins hall by hall as each one is delivered. The $5.2 billion figure is described as an estimate of contracted revenue over the full 10-year term, not a near-term cash figure, and the filing does not break out how much is fixed versus contingent on usage or expansion options. Chief executive Tyler Page was quoted saying “Barber Lake was designed as a long-lived, mission-critical asset,” a description consistent with the extended 20-year combined term but not further quantified with reliability or uptime metrics.

Key Dates Ahead for Barber Lake

Investors should watch for delivery of the first Barber Lake data halls, expected in the fourth quarter of 2026, when rent under the amended Fluidstack lease begins accruing hall by hall. The AI laboratory's 10-year term follows directly after Fluidstack's term ends, so its start date depends on how the phased delivery through the first quarter of 2027 plays out. Cipher has not disclosed the AI laboratory's identity, a further cost update against the $359.3 million threshold, or additional financing details, any of which would likely require a subsequent filing.