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

What happened

Material Event Report (Decision to Redeem Own Convertible Bonds Before Maturity) 6.0 Satoshi Holdings Co., Ltd.

Material Event Report / Exchange Reporting Obligation To: Financial Services Commission / Korea Exchange August 25, 2026 Company name: Satoshi Holdings Co., Ltd. CEO: Hong Sang-hyuk, Yoo Byung-gil (Co-CEOs) Head office address: 5 Seolleung-ro 135-gil, Gangnam-gu, Seoul (Nonhyeon-dong) Phone: 02-3012-0033 Website: http://satoshi.holdings Preparer: (Title) CEO, (Name) Hong Sang-hyuk, (Phone) 070-4211-0750

Decision to Redeem Own Convertible Bonds Before Maturity

1. Type of bonds Series: 11 Type: Unregistered, interest-bearing, unsecured, privately placed convertible bonds

2. Bond issuance date: December 23, 2025 3. Bond issuance method: Private placement 4. Bond maturity date: December 23, 2028 5. Total face (electronically registered) amount of the bonds (KRW): 3,000,000,000 6. Face (electronically registered) amount of bonds to be acquired (KRW): 1,000,000,000 7. Acquisition decision date: August 25, 2026 8. Acquisition amount Amount (KRW): 1,027,693,114 Basis: Payment of principal and interest (Expected) payment date: August 25, 2026 Source of acquisition funds: Own funds 9. Method of acquiring the bonds: Off-exchange purchase 10. Reason for acquisition before maturity: Decision to acquire the bonds before maturity by agreement with the bondholders 11. Future treatment plan: To be retired 12. Conversion details Conversion ratio (%): 100 Conversion price as of the reporting date (KRW/share): 10,385 Type of shares to be issued upon conversion: Satoshi Holdings Co., Ltd. registered common stock Number of shares: 96,292 Ratio to total shares outstanding (%): 1.82 Conversion request period: Start date December 23, 2026; End date November 23, 2028 13. Face (electronically registered) balance of the bonds after acquisition (KRW): 2,000,000,000 14. Whether subject to Fair Trade Commission filing: Not applicable 15. Other matters material to investment decisions - The above bond acquisition amount includes both principal and interest. - The above acquisition decision date is the board resolution date; the (expected) payment date is the actual bond acquisition date. - The ratio of shares to be issued upon conversion to total shares outstanding above is the number of shares to be issued, and the corresponding ratio, if the convertible bonds acquired this time are converted.

[Seller information] Seller name: Sangsangin Savings Bank Co., Ltd.; Relationship with the company or largest shareholder: none; Basis for selection: bondholder of this bond (Series 13 CB underwriter); Face amount of bonds sold (KRW): 1,000,000,000