[Amended] Material event report (equity acquisition)

What happened

Material Event Report (Decision to Acquire Equity and Equity Securities of Another Company), Form 6.1 Genesystem Co., Ltd., Amendment Report July 31, 2026

1. Disclosure document being amended: Material Event Report (Decision to Acquire Equity and Equity Securities of Another Company) 2. Original filing date of the disclosure document being amended: 2026-07-30 3. Amendment details Item 14 (Future plans for corporate restructuring): Reason for amendment - amendment due to a partial change in the stated content Before amendment: "The company plans a small-scale merger with the investee company. Related matters will proceed through disclosure as they arise. Merger method: Genesystem Co., Ltd. will absorb-merge Gyeongbo Electric Co., Ltd. Purpose of merger: by having the surviving company, Genesystem Co., Ltd., absorb-merge the merged company, Gyeongbo Electric Co., Ltd., the company aims to integrate business capabilities, improve management efficiency, and secure medium- to long-term growth drivers." After amendment: "The company plans to stabilize the investee company's business operations and integrate its organization and operations, and is reviewing a merger of the two companies depending on progress. The specific merger method and schedule have not yet been finalized, and related matters will be disclosed in accordance with applicable laws once determined."

Material Event Report / Exchange Reporting Obligation To: Financial Services Commission / Korea Exchange July 31, 2027 (as stated in the filing) Company name: Genesystem Co., Ltd. Representative Directors: Seo Yu-jin, Park Seong-yeong Head office address: 200-9 Techno 2-ro, Yuseong-gu, Daejeon (Yongsan-dong) Phone: 042-863-8551 Website: http://http://www.genesystem.co.kr (as stated in the filing) Preparer: (Title) Director; (Name) Kang Hyun-su; (Phone) 042-863-8551

Decision to Acquire Equity and Equity Securities of Another Company 1. Issuing company: Company name Gyeongbo Electric Co., Ltd.; Nationality Republic of Korea; Representative Kim Jae-jung; Capital stock (KRW) 150,000,000; Relationship with the company -; Total shares issued 15,000; Main business: manufacture and sale of meters, protective relays, and instrument transformers (CT/PT) for switchgear; New shares acquired via third-party allotment within the last 6 months: No 2. Acquisition details: Shares acquired 15,000; Acquisition amount (KRW)(A) 10,500,000,000; Total assets (KRW)(B) 14,395,506,156; Ratio to total assets (A/B) 72.94%; Equity capital (KRW)(C) 14,056,677,836; Ratio to equity capital (A/C) 74.70% 3. Shares held and equity ratio after acquisition: Shares held 15,000; Equity ratio 100% 4. Purpose of acquisition: business diversification and securing future growth drivers 5. Scheduled acquisition date: 2026-07-30 6. Counterparty: Company name (name) Kim Jae-jung and 4 others; Capital stock -; Main business -; Head office address -; Relationship with the company - 7. Payment of transaction price: 1) Payment method: cash payment; 2) Schedule - down payment and balance: July 30, 2026; 3) Source of funds: own funds 8. Matters concerning external appraisal: External appraisal conducted: Yes. Basis and reason: 1) for use as an attachment to the material event report filed with the Financial Services Commission under Article 161 of the Financial Investment Services and Capital Markets Act and Article 171 of its Enforcement Decree; 2) to provide reference material for judging the appropriateness of the acquisition price and for use as an attachment to the material event report. Name of external appraisal institution: Changcheon Accounting Corporation; External appraisal period: 2026-06-16 to 2026-07-30; External appraisal opinion: based on the appraiser's analysis, the equity value of the asset to be acquired was estimated to range from KRW 9,858 million to KRW 11,399 million as of the valuation date, and no grounds were found to conclude that the actual scheduled acquisition price of KRW 10,500 million is inappropriate from a materiality perspective. 9. Board resolution date (decision date): 2026-07-30; Independent (outside) directors* present: 1; absent: 0; Attendance of auditor (audit committee member who is not an independent (outside) director*): present 10. Whether this constitutes a backdoor listing: Not applicable; Plan for third-party allotment capital increase, etc. within the next 6 months: Yes 11. Whether the issuing company (other company) meets backdoor-listing requirements: Not applicable 12. Subject to Fair Trade Commission reporting: Not applicable 13. Whether a put option or similar agreement has been concluded: No; Contract details - 14. Future plans for corporate restructuring: The company plans to stabilize the investee company's business operations and integrate its organization and operations, and is reviewing a merger of the two companies depending on progress. The specific merger method and schedule have not yet been finalized, and related matters will be disclosed in accordance with applicable laws once determined. 15. Other material matters for investment judgment 1) The issuing company's total shares issued are as of the filing date. 2) The company's total assets above are based on the consolidated financial statements as of the end of the most recent fiscal year (2025); equity capital is that figure adjusted for changes in capital stock and capital surplus up to the disclosure date. 3) The scheduled acquisition date above is the transaction closing date, the point at which the acquirer completes payment of the balance to the transferor, assuming all closing conditions are satisfied. 4) The counterparty, Kim Jae-jung, is the largest shareholder of the issuing company, Gyeongbo Electric Co., Ltd. 5) Please refer to the external appraisal institution's opinion for details of the acquired company. 6) The "not applicable" answer on backdoor listing applies currently, but the company has plans for a third-party allotment capital increase, etc. (shares, new share warrants, convertible bonds, bonds with warrants) within the next 6 months; the issuance date, allottees, etc. are not yet determined. 7) The above acquisition schedule and payment details may change through consultation with the counterparty.

[Issuing Company's Summary Financial Status] (unit: KRW million) Category: Total assets; Total liabilities; Total equity; Capital stock; Revenue; Net income; Audit opinion; External auditor Current year: 18,139; 3,563; 14,577; 150; 23,971; 384; Unqualified; Samduk Accounting Corporation Prior year: 18,630; 3,437; 15,193; 150; 25,482; 1,451; Unqualified; Samduk Accounting Corporation Year before that: 18,807; 4,065; 14,743; 150; 28,374; 1,240; Unqualified; Samduk Accounting Corporation Note: Financial information is based on general corporate accounting standard financial statements for current year 2025, prior year 2024, and the year before that 2023.

[Matters Concerning the Counterparty] 1. Personal information - basic details Name: Kim OO / Seo OO / Seo OO / Seo OO / Yoo OO Nationality: Republic of Korea / Republic of Korea / Republic of Korea / Republic of Korea / New Zealand Address (disclosed only down to town/district level): Sapyeong-daero, Seocho-gu, Seoul / Hakdong-ro, Gangnam-gu, Seoul / Simgok-ro, Sujeong-gu, Seongnam-si, Gyeonggi-do / Simgok-ro, Sujeong-gu, Seongnam-si, Gyeonggi-do / Castor Bay, Auckland, New Zealand Occupation: business executive, etc. Largest shareholder/representative director status (where counterparty is a corporation): Name -; Shares held -; Equity ratio -. Representative director: Name -; Shares held -; Equity ratio -. (unit: KRW) Most recent fiscal year -; fiscal year-end -; total assets -; capital stock -; total liabilities -; revenue -; total equity -; net income (loss) -; external auditor -; business suspended -; audit opinion -; business closed -. 2. Relationship with the relevant corporation or its largest shareholder/officers: none stated. 3. Transaction history over the last 3 years (excluding ordinary transactions): current year not applicable; prior year not applicable; year before that not applicable.