---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-122616"
form_type: "8-K"
ticker: "WULF"
cik: "0001083301"
company_name: "TERAWULF INC."
filed_at: "2025-12-18T23:59:59+00:00"
generated_at: "2026-05-16T12:42:14.108717+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# TeraWulf subsidiary Flash Compute upsizes notes offering to $1.3B at 7.25%, due 2030

## Summary
- Flash Compute upsized its senior secured notes offering from $1.275B to $1.3B aggregate principal.
- Notes priced at 7.250% of face value, due 2030; private offering under Rule 144A and Regulation S.
- Closing expected December 29, 2025, subject to market and other conditions.
- Flash Compute is 50.1% owned by TeraWulf subsidiary Big Country Wulf LLC; 49.9% by Fluidstack CS I Inc.

## SEC filing metadata
- accession: 0001104659-25-122616
- form_type: 8-K
- ticker: WULF
- cik: 0001083301
- company_name: TERAWULF INC.
- filed_at: 2025-12-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1083301/000110465925122616/0001104659-25-122616-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1083301/000110465925122616/tm2533501d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-122616
- JSON: https://secwatch.observer/filing/0001104659-25-122616.json
- Plain text: https://secwatch.observer/filing/0001104659-25-122616.txt

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