---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-118459"
form_type: "8-K"
ticker: "SBXD"
cik: "0002015947"
company_name: "SilverBox Corp IV"
filed_at: "2025-12-04T23:59:59+00:00"
generated_at: "2026-05-16T14:56:30.424297+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Parataxis Holdings to acquire control of Sinsiway (KOSDAQ:290560) for up to KRW 35B; creates Ethereum treasury company

## Summary
- Definitive agreement: Parataxis Holdings acquires controlling interest in Sinsiway Co. Ltd. for up to KRW 35 billion.
- Sinsiway to rename to Parataxis ETH, Inc., remain listed on KOSDAQ as South Korea's first Ethereum-based treasury platform.
- Edward Chin (Parataxis Capital) joins board; Michael Myunghoon Lee appointed CEO of the combined company.
- Transaction closing expected after shareholder meeting in January 2026; subject to conditions.
- Parataxis already launched a Bitcoin treasury platform (Parataxis Korea); this adds separate Ethereum-focused structure.

## SEC filing metadata
- accession: 0001104659-25-118459
- form_type: 8-K
- ticker: SBXD
- cik: 0002015947
- company_name: SilverBox Corp IV
- filed_at: 2025-12-04T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2015947/000110465925118459/0001104659-25-118459-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2015947/000110465925118459/tm2524487d14_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-118459
- JSON: https://secwatch.observer/filing/0001104659-25-118459.json
- Plain text: https://secwatch.observer/filing/0001104659-25-118459.txt

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