---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-216393"
form_type: "8-K"
ticker: "CIFR"
cik: "0001819989"
company_name: "Cipher Digital Inc."
filed_at: "2025-09-25T23:59:59+00:00"
generated_at: "2026-05-17T05:41:42.366447+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Cipher Mining proposes $800M 0.00% convertible notes due 2031, plus $120M option

## Summary
- Offering of $800M aggregate principal of 0.00% convertible senior notes due 2031; initial purchasers get 13-day option for additional $120M.
- Notes mature Oct 1, 2031; no regular interest; conversion conditions: prior to July 1, 2031 only upon certain triggers, thereafter anytime.
- Proceeds to fund Barber Lake data center construction, accelerate HPC strategy across 2.4 GW pipeline, expand development sites, and general purposes.
- Company expects to enter capped call transactions to reduce dilution on conversion, subject to obtaining stockholder approval to increase authorized shares.
- Private offering under Rule 144A; notes and underlying shares not registered under Securities Act.

## SEC filing metadata
- accession: 0001193125-25-216393
- form_type: 8-K
- ticker: CIFR
- cik: 0001819989
- company_name: Cipher Digital Inc.
- filed_at: 2025-09-25T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1819989/000119312525216393/0001193125-25-216393-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1819989/000119312525216393/d939411d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-216393
- JSON: https://secwatch.observer/filing/0001193125-25-216393.json
- Plain text: https://secwatch.observer/filing/0001193125-25-216393.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.