Completion report on merger, etc. (asset transfer)

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Completion Report on Merger, etc. 6.0

Ryuk-Il C&S Co., Ltd. Completion Report on Merger, etc. (Asset Transfer) To the Governor of the Financial Supervisory Service July 23, 2026

Company name: Ryuk-Il C&S Co., Ltd. CEO: Koo Ja-ok / Kim Dong-hoon Head office address: 2001-C, Ace High-Tech City Bldg. 2, 775 Gyeongin-ro, Yeongdeungpo-gu, Seoul Phone: 02-2659-1116; Website: http://www.61cns.co.kr Preparer: (Title) Managing Director (Name) Park Tae-ho; Phone: 02-2136-5710

I. Schedule This report is the completion report for the material event report (decision to transfer shares and equity securities of another company) filed on July 9, 2026; as of the report date, payment has been completed and the transaction is effectively concluded.

1. Transfer details Issuing company: CNA Co., Ltd.; Number of shares transferred: 160,000; Transfer price: KRW 14,500,000,000; Transferor: Ryuk-Il C&S Co., Ltd.; Transferee: J&Peach Co., Ltd.; Payment method: cash

2. Progress and schedule Outside appraisal period: June 20, 2026 to July 3, 2026 (Dongsung Accounting Corporation) Contract execution date: July 9, 2026 Board resolution date: July 9, 2026 Material event report filing date: July 9, 2026 Transaction closing date: July 23, 2026 (full balance received)

II. Changes in the holdings of the largest shareholder, etc.: not applicable III. Exercise of appraisal rights: not applicable IV. Creditor protection matters: not applicable V. Status of related litigation: not applicable VI. Matters relating to new share allotment, etc.: not applicable

VII. Summary pre- and post-transaction financial information (unit: KRW) Category, Before the asset transfer / Increase (decrease) / After the asset transfer: Current assets: 27,011,841,841 / (11,662,709,027) / 15,349,132,814 Non-current assets: 31,778,053,650 / (7,459,733,792) / 24,318,319,858 Total assets: 58,789,895,491 / (19,122,442,819) / 39,667,452,672 Current liabilities: 29,740,136,261 / (8,246,359,793) / 21,493,776,468 Non-current liabilities: 4,605,805,070 / (1,137,158,874) / 3,468,646,196 Total liabilities: 34,345,941,331 / (9,383,518,667) / 24,962,422,664 Capital stock: 6,678,850,500 / (800,000,000) / 5,878,850,500 Other paid-in capital: 6,626,241,284 / - / 6,626,241,284 Accumulated other comprehensive income: (449,813,751) / - / (449,813,751) Retained earnings (accumulated deficit): 11,444,178,562 / (8,938,924,152) / 2,505,254,410 Non-controlling interests: 144,497,565 / - / 144,497,565 Total equity: 24,443,954,160 / (9,738,924,152) / 14,705,030,008 Total equity and liabilities: 58,789,895,491 / (19,122,442,819) / 39,667,452,672

(*) The above summary financial information is based on the consolidated financial statements in the Q1 2026 report (as of March 31, 2026). (**) The post-transaction financial information above reflects only a simple addition/subtraction of amounts related to this asset transfer; the actual figures may differ once reviewed or audited by the external auditor.