Cipher Digital seeks $850m in zero-coupon convertible notes for HPC push

The NASDAQ-listed data centre operator is raising up to $1bn via convertible notes due 2032 to fund HPC build-out and its Barber Lake

A large construction site features multiple multi-story buildings with concrete lower levels and exposed steel frames, surrounded by concrete foundations and excavators under a clear blue sky.

Cipher Digital (NASDAQ: CIFR), which develops and operates industrial-scale data centres purpose-built for high-performance computing, has announced a proposed private offering of $850 million in 0.00% convertible senior notes maturing 1 November 2032. The offering is restricted to qualified institutional buyers under Rule 144A and is subject to market conditions. Initial purchasers have been granted a 13-day option to acquire up to a further $150 million in notes, bringing the potential total raise to $1 billion.

The notes carry no regular coupon and will not accrete in principal value. Conversion terms, including the initial conversion rate, will be fixed at pricing. Cipher has the option to settle conversions in cash, common stock, or a combination of the two. The notes become redeemable at Cipher's discretion on or after 5 November 2029, provided the company's share price exceeds 130% of the conversion price for a specified period. Noteholders also hold a put right on 1 November 2030, allowing them to require repurchase at par.

Use of proceeds

Cipher says it intends to use the bulk of the net proceeds to fund additional equity investment in its Barber Lake development project, support HPC infrastructure build-out across its near-term pipeline, and extend its land and site development activity. A portion of the proceeds will finance capped call transactions designed to reduce potential dilution to existing shareholders upon conversion.

Concurrently, Cipher expects to enter privately negotiated exchange agreements with a limited number of holders of its existing 1.75% Convertible Senior Notes due 2030, swapping a portion of those outstanding notes for common stock. The company acknowledged that hedging activity by note counterparties around pricing could exert upward or downward pressure on its share price in the near term.

Market context

The move reflects a broader pattern among specialist data centre operators seeking capital markets financing to accelerate capacity ahead of hyperscale demand. HPC-focused co-location and build-to-suit operators have faced intense competition for power-connected land, construction contractors and engineering talent, all of which have become constrained as cloud providers and AI infrastructure operators compete for the same assets.

Zero-coupon convertible structures have gained renewed favour in capital markets during periods of elevated interest rates, allowing issuers to raise debt without cash interest burden while offering investors equity upside. Cipher's choice of a 2032 maturity and a 2030 put date reflects a structure that aligns repayment milestones with the anticipated ramp of its HPC tenancy pipeline.

Regulatory and dilution considerations

As an unregistered private placement under Rule 144A, the offering does not require SEC registration and is not open to retail investors. Cipher's boilerplate confirms the notes and any shares issuable on conversion have not been registered under the Securities Act. The company has not disclosed which institutional investors are participating or revealed the conversion premium at this stage.

Cipher named J. Wood Capital Advisors as financial adviser to the transaction. The company did not announce a named anchor tenant for the Barber Lake project or provide a timeline for when the first HPC facilities from the new capital deployment are expected to go live. Investors and analysts will be watching for tenancy announcements and construction milestones as the key near-term indicators of whether this capital raise translates into contracted revenue.