Change of largest shareholder

What happened

Change of largest shareholder

1. Change details Largest shareholder before change: Hahn & Company Auto Services Holdings LLC and 1 other Shares held before change (shares): 35,255,670 Ownership ratio before change (%): 72.21 Largest shareholder after change: KG Steel Co., Ltd. and 1 other Shares held after change (shares): 25,642,810 Ownership ratio after change (%): 52.52

2. Reason for change: change of largest shareholder through a stock purchase agreement

3. Purpose of the equity acquisition: management participation - Method of funding the acquisition: - - Plans for appointment/dismissal of officers after the acquisition: following resolutions at the Company's 10th extraordinary general shareholders' meeting (2026-07-07, 2026-08-14), the officers to be appointed and those resigning are as follows. Appointments (7 persons): - In-house directors (2): Jeong In-guk, Woo Chi-gu - Other non-executive directors (2): Kwon Gyo-won, Lee Jun-ho - Independent directors serving as audit committee members (3): Nam Kyung-pil, An Si-hyeong, Han Hyo-seok Resignations (8 persons): - Executive officers (2): Jeong In-guk, Bae Mu-geun - Other non-executive directors (3): Yoon Yeo-eul, Kim Seong-ju, Jeong Jun-young - Independent directors serving as audit committee members (3): Han Chan-hui, Min Won-pyo, Kim Yeong-gon

4. Change date: 2026-08-31

5. Date of confirmation of the change: 2026-08-31

6. Other matters material to investment decisions The Company's largest shareholder, Hahn & Company Auto Services Holdings LLC, entered into a stock purchase agreement (the "Stock Purchase Agreement") on March 31, 2026 to sell its 35,245,670 common shares in the Company to KG Steel Co., Ltd., and on April 21, 2026 entered into an amendment agreement transferring part of KG Steel Co., Ltd.'s status and rights and obligations as buyer under the Stock Purchase Agreement to Cactus Private Equity Co., Ltd., as designated by the buyer. Cactus Private Equity Co., Ltd. transferred its status as buyer and the related rights and obligations on June 25, 2026 to K Mobility Value-Up Co., Ltd., an investment purpose company under the Financial Investment Services and Capital Markets Act, and Hahn & Company Auto Services Holdings LLC received notice of this transfer on June 29, 2026. The largest shareholder changed on the transaction closing date of the Stock Purchase Agreement, August 31, 2026. - The ownership ratio in "1. Change details" above is the percentage of total issued shares. - The "date of confirmation of the change" in "5." above is the date on which the largest shareholder confirmed the fact that it had transferred the shares (the settlement date). - Financial condition of the largest shareholder after the change: * KG Steel Co., Ltd. (based on 2025 consolidated financial statements) Capital stock: KRW 555,311 million Total assets: KRW 3,100,740 million Total liabilities: KRW 1,045,253 million Total equity: KRW 2,055,487 million Operating income: KRW 150,747 million Net income: KRW 135,541 million

Related disclosures: 2026-08-27 Material matter relevant to investment decisions

Detailed change breakdown Name (entity) - Relationship - Before: shares/ownership ratio - After: shares/ownership ratio - Remarks Hahn & Company Auto Services Holdings LLC - largest shareholder before change - 35,245,670 / 72.19% - 0 / 0% - - Jeong In-guk - related party of the largest shareholder before change - 10,000 / 0.02% - 10,000 / 0.02% - related party of the largest shareholder before and after the change (representative director) KG Steel Co., Ltd. - largest shareholder after change - 0 / 0% - 25,632,810 / 52.50% - -