Credit research · historical deal-term analysis
A completion grace period is not an interest holiday
Two AI data-center note deals separate the principal clock from the interest clock. That gap is where construction finance meets credit risk.
Research as of · Target issue date
The phrase “no amortization before completion” can sound like a payment holiday. It is narrower. The filed summaries for two tenant-backed data-center note deals put principal amortization behind a construction milestone while separately setting calendar dates for interest. That distinction is worth underwriting: the principal clock may wait for a building; the stated interest clock starts on dates fixed at issuance.
| Filed structure | Interest calendar stated at issuance | Principal-amortization condition |
|---|---|---|
| TeraWulf Lake Mariner: $3.2 billion initial principal of 7.750% senior secured notes due 2030 | Semiannual interest scheduled for April 15 and October 15, beginning April 15, 2026. | No amortization attributable to a data-center building in the expansion is payable before that building's completion. |
| Cipher Barber Lake: $1.4 billion initial principal of 7.125% senior secured notes due 2030 | Semiannual interest scheduled for May 15 and November 15, beginning May 15, 2026. | No principal amortization is payable before the facility's completion. |
The two completion triggers are not interchangeable. One is expressed building by building; the other refers to the facility. Neither sentence says that interest is deferred until completion. Conversely, the existence of a stated interest date does not tell us whether the project was complete by then, what cash funded any payment, or whether a payment was actually made. Those questions need dated project evidence and the operative cash-control and reserve provisions, not an inference from the issuance summary.
This matters differently to Spotwire's readers. A credit underwriter needs to model the cash source and controls in the construction period, including any reserve, sponsor contribution, lease cash, or support payment that actually applies. A developer needs to know which completion definition releases principal amortization and whether its critical path matches tenant acceptance and rent commencement. A reporter or trader should not turn “amortization begins after completion” into “the debt costs nothing before opening,” or treat a named counterparty as an automatic guarantor of the notes.
The TeraWulf indenture and Cipher indenture name Fluidstack leases and Google Financial Support Agreements. That establishes named components of the documented structures, not an unconditional Google guarantee of note principal or interest. The next underwriting step is to identify the operative support obligation, its triggers, and where proceeds enter the waterfall; this draft does not purport to have resolved them.
What must be checked before release
- — Re-read the cited 8-K and indenture passages against the archived copies, then check subsequent filings for amendments, additional notes, payment disclosures, construction milestones, and current outstanding amounts. Do not describe a scheduled 2026 date as an observed payment.
- — Trace the source of interest cash before completion through the indenture's reserve, account, cash-management and permitted-payment provisions. Mark inaccessible or redacted operative agreements as unknown, not zero.
- — Check the actual completion definition for each structure and whether building-level versus facility-wide language changes timing under partial delivery. Do not assert a completion date from the original issuance terms.
- — Run the seven-calendar-day discovery screen ending October 1 before labeling any item “New and Updated Deals.” If no qualifying new agreement is verified, leave that section empty and keep this feature explicitly historical.
Source and scope
This working draft uses four SEC documents archived in Spotwire's internal partial-fact register. The dates, coupons, initial principal and principal-amortization conditions are source-backed observations; the register is not a full covenant or current-status review. Spotwire's collection indices are separate from this editorial research. Corrections or source challenges: [email protected].