Material event report (decision to redeem own convertible bonds early)

What happened

Material Event Report / Korea Exchange Notification Matter To: Financial Services Commission / Korea Exchange Date: August 26, 2026 Company Name: Satoshi Holdings Co., Ltd. Representative Directors: Hong Sang-hyuk, Yoo Byung-gil (Co-Representative Directors) Head Office Address: 5 Seolleung-ro 135-gil, Gangnam-gu, Seoul (Nonhyeon-dong) Telephone: 02-3012-0033 Website: http://satoshi.holdings Preparer: Title, Representative Director; Name, Hong Sang-hyuk; Telephone: 070-4211-0750

Decision to acquire own convertible bonds before maturity

1. Type of bond Series: 10 Type: Unregistered, interest-bearing, unsecured, privately placed convertible bonds

2. Bond issue date: 2025-07-21 3. Bond issuance method: Private placement 4. Bond maturity date: 2028-07-21 5. Total face (electronically registered) amount of the bond (KRW): 7,500,000,000 6. Face (electronically registered) amount of the bond to be acquired (KRW): 6,800,000,000 7. Acquisition decision date: 2026-08-26 8. Acquisition amount Amount (KRW): 6,709,199,648 Basis of calculation: External appraisal (Expected) payment date: 2026-08-26 Source of acquisition funds: In-kind payment from shares held 9. Method of acquisition: Over-the-counter purchase 10. Reason for acquisition before maturity: Stock transfer agreement - offset of payment 11. Future handling plan: Expected cancellation of the registered bond at the Korea Securities Depository 12. Matters concerning conversion Conversion ratio (%): 100 Conversion price as of the report date (KRW/share): 14,785 Type of shares to be issued upon conversion: Registered common shares Number of shares: - As % of total shares: - Conversion request period: start 2026-07-21, end 2028-06-21 13. Face (electronically registered) balance of the bond after acquisition (KRW): 700,000,000 14. Subject to Fair Trade Commission reporting: Not applicable 15. Other matters for investment reference - The bond acquisition amount above is the amount calculated by external appraisal for the stock transfer. - The acquisition decision date above is the board resolution date, and the (expected) payment date is the expected date of delivery of the shares and bond.

[Matters concerning the seller] Seller name: Nakamoto Investment Association Relationship with the Company or largest shareholder: Related party of the largest shareholder Selection process: Bondholder of this bond Transaction details and plans within 6 months before/after the acquisition decision: - Face amount of bonds sold (KRW): 6,800,000,000 Remarks: -

[Where the seller includes the Company's largest shareholder or its related party] Seller name: Nakamoto Investment Association Relationship with largest shareholder: Related party Shares held at the time of CB issuance: quantity -, ratio (%) - Shares to be issued upon conversion: quantity -, ratio (%) - Remarks: -

[Where the seller includes a corporation or organization] (1) Basic information on the corporation or organization Name: Nakamoto Investment Association Number of investors (persons): 1 Representative director (representative partner): Lee Hee-seup, - Managing member (managing partner): - Largest shareholder (largest investor): Kim Byeong-jin, 100% (2) Key financial matters for the most recent settlement period (unit: KRW million) Fiscal year: 2025, settlement month: 12 Total assets: 11,831 Revenue: 0 Total liabilities: 30 Net income (loss): -830 Total equity: 11,801 External auditor: Dongsung Accounting Corporation Capital: 11,802 Audit opinion: Unqualified