Material event report (rights offering) (subsidiary)

What happened

Material event report / Korea Exchange disclosure obligation: material management matter report of subsidiary Taeyoung Construction Co., Ltd. To: Financial Services Commission / Korea Exchange Date: August 27, 2026 Company name: Taeyoung Construction Co., Ltd. Representative director: Lee Kang-seok Head office: 20 Singi-ro, Gwangmyeong-si, Gyeonggi-do (Tel) 02-2090-2200 (Website) http://www.taeyoung.com Preparer: (Title) Head of Management Division (Name) Hwang Seon-ho (Tel) 02-2090-2200

Rights offering decision

1. Type and number of new shares: common shares 21,863,059; other-class shares - 2. Par value per share (KRW): 500 3. Total shares outstanding before offering: common shares 297,590,078; other-class shares 649,974 4. Purpose of capital raise: facility funds -; business-acquisition funds -; working capital -; debt repayment funds -; funds to acquire securities of another company -; other funds (KRW) 50,503,666,290 5. Method of offering: third-party allotment (other-class share matters not applicable) 6. New share issue price: common shares KRW 2,310; other-class shares - 7. Reference share price: common shares KRW 2,310; other-class shares - 7-1. Method of determining reference price: appraised value, as no market price has formed for the stock 7-2. Discount/premium rate: - 7-3. Basis for discount/premium: - 8. Articles-of-incorporation basis for third-party allotment: Article 10 ("Issuance and Allotment of Shares"), Paragraph 1, Item 2 9. Payment date: September 4, 2026 10. Dividend start date for new shares: January 1, 2026 11. Expected delivery date of new share certificates: - 12. Expected listing date of new shares: September 21, 2026 13. Backdoor listing via in-kind contribution: No; no in-kind contribution; not applicable whether unlisted-company shares are included; in-kind contribution value -, ratio to total assets -, shares to be paid in - 14. Meets backdoor-listing requirements: not applicable 15. Board resolution date: August 27, 2026 (independent/outside directors present: 3, absent: -; audit committee attendance: -) 16. Subject to securities registration statement: No 17. Reason for exemption: exempted (one-year lock-up with the Korea Securities Depository) 18. Subject to a period during which short-selling subscriptions are prohibited: No; start -, end - 19. Subject to Fair Trade Commission reporting: not applicable 20. Other material matters relevant to investment decisions (1) This rights offering is a debt-to-equity conversion of unsecured financial claims, carried out as a third-party-allotment rights offering (debt-to-equity conversion) under the Corporate Restructuring Promotion Act, pursuant to the third Financial Creditors' Council resolution (April 30, 2024), the bondholders' meeting resolution for the 68th public bond (June 11, 2024), and the company's board resolution (August 27, 2026). (2) Under Article 5-18, Paragraph 1 of the "Regulation on Issuance and Disclosure of Securities," the issue price would ordinarily apply a discount to the weighted-average price for the 3rd-5th trading days before subscription; however, since the company is in a workout under a financial-institution agreement for restructuring, the final price reflects 1) Article 5-18, Paragraph 3 of the Regulation and 2) the price set by the third Financial Creditors' Council resolution (April 30, 2024): the closing price on the trading-suspension date of KRW 2,310 per share. (3) The effective date of this offering is September 5, 2026, the day after the payment date. (4) All new shares issued will be deposited with the Korea Securities Depository immediately after issuance and locked up for one year from the deposit date (September 21, 2026 - September 20, 2027); the securities registration statement filing is exempted under Article 2-2 of the Regulation. (5) The purpose in Section 4 above is to achieve the company's management objective (capital enhancement) through improving its financial structure via debt-to-equity conversion. (6) The subscription deposit and payment will be made by offsetting the underwriters' payment obligation against their financial claims against the company; the payment date is the debt-to-equity-conversion date. (7) Authority over contract preparation/execution, required documents, detail adjustments and other incidental administrative procedures is delegated to the representative director. (8) The schedule may change through discussions with relevant institutions; changes will be announced via an amended disclosure.

[Where no market price has formed] Trading-suspension information: reference-price method -; change ratio vs. closing price (B-A)/A x100 -; external appraisal -; suspension date -; last closing price before suspension (A) -; appraisal method -; appraised amount (B) -; appraiser name - * As the company is in a workout under a financial-institution agreement for restructuring, pursuant to the exception in Article 5-18, Paragraph 4, Item 2 of the Regulation (no discount applies where a financial creditor converts loans etc. to equity as debt restructuring), the final issue price was set at the closing price on the trading-suspension date by agreement between the company and its financial creditors.

[Basis and purpose of third-party allotment] Articles-of-incorporation basis: Article 10 ("Issuance and Allotment of Shares"): ① when the company issues new shares by board resolution, it does so by: 1. offering shareholders the chance to subscribe pro-rata to their holdings; 2. where necessary for a management objective such as introducing new technology or improving financial structure, offering the chance to subscribe to specific persons (including the company's shareholders) other than under Item 1; 3. offering the chance to subscribe to an unspecified number of persons (including shareholders) other than under Item 1 and allotting accordingly. Purpose of the third-party allotment: to achieve the company's management objective, including improving the financial structure through debt-to-equity conversion.

* Other reference matter (lock-up): all new shares issued are locked up for one year under Article 2-2, Paragraph 2, Item 1 of the Regulation (resale-restriction measure). Lock-up period: September 21, 2026 - September 20, 2027 (one year).

[Specific use of funds raised via third-party allotment] (for working capital/other funds; unit: KRW) Use of funds: other funds - offsetting debt-to-equity-conversion claims against the new-share subscription payment Planned use by year: 2026: 50,503,666,290; 2027: -; 2028 and after: -; Total: 50,503,666,290 Note: because this offering is carried out by issuing common shares as new shares and offsetting them against the claims subject to debt-to-equity conversion, there is no separate cash inflow.

[Selection process, transaction history and allotment for each third-party allottee] Allottee: Hidream 2nd Co. - Relationship: financial creditor institution - Selection process: debt-to-equity-conversion creditor under Chapter 2, Article 5 of the MOU on implementation of the corporate rehabilitation plan executed May 30, 2024 - Transactions within 6 months before/after the decision: none - Allotted shares: 7,008,418 - Note: one-year lock-up Allottee: Korea Securities Finance Corporation - Relationship: financial creditor institution - Selection process: same MOU basis - Transactions: none - Allotted shares: 8,584,593 - Note: one-year lock-up Allottee: KB Securities - Relationship: financial creditor institution - Selection process: same MOU basis - Transactions: none - Allotted shares: 6,256,313 - Note: one-year lock-up Allottee: 19 holders of the 68th public corporate bond - Relationship: - - Selection process: same MOU basis - Transactions: none - Allotted shares: 13,735 - Note: one-year lock-up