[Amended] Material event report (business acquisition)

A later amendment corrects this filing, so the terms on this page may be out of date. See the latest version (2026-10-16) →

What happened

Amendment report (notice) September 29, 2026 1. Disclosure document being amended: Material event report (business acquisition decision) 2. Original filing date of the disclosure document being amended: August 6, 2026 3. Amended items Item: "6. Expected acquisition date - acquisition reference date", reason: change of acquisition reference date - Before: Acquisition reference date: September 30, 2026 - After: Acquisition reference date: October 16, 2026 Item: "8. Payment of the acquisition price", reason: change of acquisition reference date and first-balance payment timing - Before: First balance KRW 3,000,000,000, payment timing 2026-09-30 (acquisition reference date, transaction closing date); note that this date is an expected date and may change. - After: First balance KRW 3,000,000,000, payment timing 2026-10-16 (acquisition reference date, transaction closing date); note that this date is an expected date and may change.

Material event report / Matters subject to KRX reporting obligation To the Financial Services Commission / Korea Exchange August 6, 2026 Company name: STraffic Co., Ltd. CEO: Mun Chan-jong Head office address: C-dong, 56 Geumto-ro 80beon-gil, Sujeong-gu, Seongnam-si, Gyeonggi-do (Geumto-dong, Widen Tower) (Phone) 031-739-9500 (Website) http://www.straffic.co.kr/ Preparer: (Title) Executive Vice President (Name) Lee Jang-han (Phone) 031-739-9533

Decision on business acquisition

1. Business being acquired: The railway signaling business division of LS Electric Co., Ltd. 2. Main content of the business being acquired: The entire railway signaling business division of LS Electric Co., Ltd. 3. Acquisition price (KRW): 74,536,000,000 - Whether the entire business is being acquired: No - Financial details (KRW): acquired business segment (A), assets 69,869,266,914, revenue 78,446,977,233, liabilities 29,366,644,194; the Company as a whole (B), assets 172,855,230,596, revenue 168,238,551,225, liabilities 70,616,576,429; ratio (A/B): assets 40.42%, revenue 46.63%, liabilities 41.59% 4. Purpose of acquisition: Synergy with the Company's existing railway signaling business and enhancement of corporate value 5. Effect of the acquisition: Expansion of business scope and increased revenue and profit through synergy from this business acquisition 6. Expected acquisition date: contract execution date August 6, 2026; acquisition reference date October 16, 2026 7. Counterparty: company name LS Electric Co., Ltd.; capital stock (KRW) 150,000,000,000; main business: manufacture of electrical circuit switching and protection devices; head office address: LS Tower, 127 LS-ro, Dongan-gu, Anyang-si, Gyeonggi-do; relationship with the Company: - 8. Payment of the acquisition price 1. Total acquisition price: KRW 74,536,000,000 2. Payment form: cash payment 3. Amount and timing of payment: a. Down payment KRW 1,000,000,000 (2026-08-06, execution of the main agreement); b. First balance KRW 3,000,000,000 (2026-10-16, acquisition reference date, transaction closing date); c. Second balance KRW 70,536,000,000, to be paid in installments after the closing date as a settlement amount based on the net asset value of the acquired assets 4. Funding method: cash on hand and proceeds from collection of receivables among the acquired assets The balance, excluding the down payment, is expected to be paid after the relevant agenda item passes at the extraordinary shareholders' meeting scheduled for September 16, 2026; if rejected, this agreement may be terminated and the acquisition price will not be paid. The total acquisition price is calculated based on the net asset value as of the transaction closing date, taking into account the net cash inflow arising from the transferred contracts; the figure above assumes a closing date of June 30, 2026, and the actual amount will depend on the net asset value as of the actual closing date and future cash flows under the transferred contracts. The acquisition reference date of October 16, 2026 and the above schedule and payment timing are expected and may change as the process proceeds. 9. Matters concerning external valuation - Whether an external valuation was conducted: Yes - Basis and reason: appropriateness assessment under Article 165-4, Paragraph 1, Item 2 of the FSCMA and Article 176-6, Paragraph 3 of its Enforcement Decree - Name of the external valuation institution: Hanul Accounting Corp. - External valuation period: July 29, 2026 to August 6, 2026 - External valuation opinion: The Appraiser applied the discounted cash flow (DCF) method to value the Target Business. As of the valuation date, the value of the Target Business is calculated to be in the range of KRW 71,131 million to KRW 78,548 million. Accordingly, the expected transfer price of KRW 74,536 million agreed between the Company and the transferor is judged to be appropriate when considered against this valuation range. 10. Whether a special resolution of the shareholders' meeting is required: Yes - Expected shareholders' meeting date: September 16, 2026 - Matters concerning appraisal rights - Requirements for exercise: Under Article 374-2 of the Commercial Act and Article 165-5 of the FSCMA, a shareholder recorded in the Company's shareholder registry as of the record date who notifies the Company in writing of dissent to the resolution by the day before the shareholders' meeting may, within 20 days of the resolution date, demand in writing, stating the type and number of shares, that the Company purchase the shares it owns (limited to shares continuously held from the record date through the exercise date), and may request purchase of only part of the shares held. Shares sold and reacquired during that period lose eligibility, and once exercised, appraisal rights cannot be withdrawn. A shareholder who gave advance written notice of dissent but then votes in favor at the shareholders' meeting may not exercise appraisal rights. Because the Company is listed on KOSDAQ, it must purchase the shares within one month from the end of the exercise period. - Expected purchase price: KRW 2,759 - Procedure, method, period, place for exercise: notice of dissent through the custodian securities company or directly to the Company before the shareholders' meeting; purchase request within 20 days of the resolution date, following the same mechanics described for other filings in this chunk. (3) Exercise period: record date for determining shareholders August 21, 2026; receipt of notices of dissent to the business acquisition September 1, 2026 to September 15, 2026; expected shareholders' meeting date September 16, 2026; appraisal-right exercise period September 16, 2026 to October 6, 2026 (4) Place of exercise: beneficial shareholders, the relevant securities company - Expected timing and method of payment: within one month from the end of the exercise period; payment by cash or account transfer as applicable. - Matters on restriction of appraisal rights: limited to shares continuously held from the record date through the exercise date; a shareholder who voted in favor at the shareholders' meeting after giving advance notice of dissent may not exercise appraisal rights. - Effect on the contract: If the Company's shareholders' meeting approval is not obtained, the buyer may terminate this agreement by written notice to the seller. Also, if the total purchase price payable under appraisal rights exercised by the Acquirer's dissenting shareholders exceeds KRW 5 billion, the buyer may terminate this agreement by written notice to the seller. 11. Board resolution date (decision date): August 6, 2026 - Attendance of independent (outside) directors: present 1; absent - - Attendance of auditor (audit committee member who is not an independent/outside director): present 12. Whether this constitutes a backdoor listing: No - Plans for a third-party-allotted capital increase, etc. within the next 6 months: No 13. Whether the other company meets backdoor-listing requirements: Not applicable 14. Whether subject to Fair Trade Commission reporting: Yes 15. Whether a put-option or similar agreement was executed: No; contract details: - * An independent director applies to listed companies and an outside director to unlisted companies. 16. Plans for future corporate restructuring: The business will be incorporated into an existing division of the acquiring company without establishing a separate corporate entity. 17. Other important matters for investment decisions (1) The "acquired business segment (A)" assets and liabilities in "3." above are as of December 31, 2025, and revenue covers January 1, 2025 through December 31, 2025. The "Company as a whole (B)" financial details are based on the 13th fiscal period's (January 1, 2025 - December 31, 2025) consolidated financial statements prepared under K-IFRS. (2) In "6." above, "contract execution date" is the date of the Company's board resolution and the date both parties signed the contract; "acquisition reference date" is the date on which the transferor transfers the business-transfer assets to the Acquirer (the effective date), and the asset succession process is completed on the business-transfer closing date, which may change depending on the terms of the acquisition agreement and filing schedule with relevant authorities. (3) The "capital stock (KRW)" of "7." above is based on the consolidated financial statements in the audit report as of the end of 2025. (4) Expected share purchase price for appraisal rights: ① Company's proposed price for consultation: calculated under Article 176-7, Paragraph 3, Item 1 of the Enforcement Decree of the FSCMA as the arithmetic average of the volume-weighted average daily closing prices on the securities market over the past 2 months, past 1 month, and past 1 week counted back from the day before the board resolution date, weighted by trading volume. [Method of calculating the expected share purchase price (Article 176-7, Paragraph 3 of the Enforcement Decree of the FSCMA)] - Most recent 2-month volume-weighted average price: KRW 2,823 (June 6, 2026 to August 5, 2026) - Most recent 1-month volume-weighted average price: KRW 2,776 (July 6, 2026 to August 5, 2026) - Most recent 1-week volume-weighted average price: KRW 2,678 (July 30, 2026 to August 5, 2026) - Base purchase price [(sum)/3]: KRW 2,759 [Calculation detail] (Unit: KRW; shares; KRW) - Date, Closing price, Trading volume, Closing price x Trading volume: 2026-08-05: 2,725; 74,925; 204,170,625 2026-08-04: 2,690; 50,508; 135,866,520 2026-08-03: 2,645; 68,556; 181,330,620 2026-07-31: 2,715; 70,307; 190,883,505 2026-07-30: 2,605; 59,400; 154,737,000 2026-07-29: 2,630; 141,465; 372,052,950 2026-07-28: 2,810; 63,005; 177,044,050 2026-07-27: 2,885; 32,799; 94,625,115 2026-07-24: 2,895; 29,321; 84,884,295 2026-07-23: 2,920; 21,111; 61,644,120 2026-07-22: 2,900; 29,058; 84,268,200 2026-07-21: 2,860; 22,437; 64,169,820 2026-07-20: 2,860; 62,242; 178,012,120 2026-07-16: 2,905; 60,962; 177,094,610 2026-07-15: 2,970; 94,083; 279,426,510 2026-07-14: 2,750; 139,177; 382,736,750 2026-07-13: 2,750; 63,474; 174,553,500 2026-07-10: 2,840; 52,847; 150,085,480 2026-07-09: 2,780; 47,455; 131,924,900 2026-07-08: 2,790; 49,585; 138,342,150 2026-07-07: 2,810; 66,037; 185,563,970 2026-07-06: 2,805; 48,164; 135,100,020 2026-07-03: 2,845; 36,846; 104,826,870 2026-07-02: 2,845; 46,088; 131,120,360 2026-07-01: 2,915; 43,249; 126,070,835 2026-06-30: 2,865; 55,362; 158,612,130 2026-06-29: 2,875; 88,110; 253,316,250 2026-06-26: 2,730; 179,638; 490,411,740 2026-06-25: 2,785; 56,868; 158,377,380 2026-06-24: 2,840; 57,713; 163,904,920 2026-06-23: 2,780; 115,206; 320,272,680 2026-06-22: 2,910; 90,140; 262,307,400 2026-06-19: 3,000; 70,641; 211,923,000 2026-06-18: 3,005; 43,734; 131,420,670 2026-06-17: 3,040; 46,614; 141,706,560 2026-06-16: 3,020; 52,437; 158,359,740 2026-06-15: 3,005; 32,186; 96,718,930 2026-06-12: 2,950; 109,399; 322,727,050 2026-06-11: 2,885; 29,042; 83,786,170 2026-06-10: 2,885; 58,358; 168,362,830 2026-06-09: 2,860; 39,756; 113,702,160 2026-06-08: 2,800; 106,004; 296,811,200 Resulting averages: 2-month volume-weighted average closing price (2026-06-06 to 2026-08-05) KRW 2,823; 1-month volume-weighted average closing price (2026-07-06 to 2026-08-08) KRW 2,776; 1-week volume-weighted average closing price (2026-07-30 to 2026-08-05) KRW 2,678; arithmetic average KRW 2,759. ② Method of handling if agreement is not reached: under Article 165-5 of the FSCMA, the amount is calculated based on the trading price of the relevant shares on the securities market; a requesting shareholder who disagrees may petition the court to determine the purchase price. ③ Please note that the share purchase price and matters concerning exercise of appraisal rights may change during consultation with shareholders, if necessary. ④ The above business-acquisition schedule and other main terms are as of the time of this disclosure and may change through consultation and approval with relevant authorities, courts, the Fair Trade Commission and others. (5) Other reference matters: If the Company's shareholders' meeting approval is not obtained for this business acquisition, the buyer may terminate this agreement by written notice to the seller. Also, if the total purchase price payable under appraisal rights exercised by the Acquirer's dissenting shareholders exceeds KRW 5 billion, the buyer may terminate this agreement by written notice to the seller. The total acquisition price is calculated based on the net asset value as of the transaction closing date, taking into account the net cash inflow arising from the transferred contracts; the figure above assumes a closing date of June 30, 2026, and the actual amount will depend on the net asset value as of the actual closing date and future cash flows under the transferred contracts.