Cipher prices $1.4B notes to fund Barber Lake data center

Cipher Mining priced a $1.4 billion debt offering to fund part of a new data center construction.

• Main announcement: Cipher Mining’s wholly-owned subsidiary Cipher Compute LLChas priced a $1.4 billion offering of 7.125% senior secured notes due 2030, priced at par, to finance a portion of the construction cost of the Barber Lake Facility, a high-performance computing data center near Colorado City, Texas; the Offering is expected to close on November 13, 2025, subject to market and other conditions.
• Background and deal structure: The Notes will be sold in a Rule 144A private placement to qualified institutional buyers, will be fully and unconditionally guaranteed by Cipher Barber Lake LLC, and secured by first-priority liens on substantially all Issuer and Guarantor assets, equity interests held by Cipher Songbird LLC, a potential lockbox account of Fluidstack USA II Inc., and (prior to facility completion) a pledge by Google LLC of warrants to purchase Cipher common stock; Cipher will provide a completion guarantee to fund the Issuer if proceeds are insufficient.