Annual Large Business Group Status Disclosure (Individual Company)

Business Group Status Disclosure (Annual - Individual Company) LX Semicon Status Disclosure for Member Company of Large Business Group - Business Group Name: LX - Group Controlling Person: Koo Bon-joon - Group Representative Company: LX Holdings Corp. - Filing Company: LX Semicon Co., Ltd. - Contact: Park Jin-soo (Manager), Tel: 02-6924-3114 <Reference> The representative company of the LX group status disclosure is LX Holdings Corp. The overall status of the LX group is the same as the disclosure filed by LX Holdings, so please refer to the LX group status disclosure filed by LX Holdings. 1. General Status (1) Company Overview (as of 2026.05.01, unit: persons) - Non-financial company: LX Semicon Co., Ltd. - CEO: Lee Yoon-tae - Established: 1999.11.11 - Date of affiliation: 2021.05.03 - Industry: (C2612) Manufacture of diodes, transistors and similar semiconductor devices - Employees: 1,443 - Listing status: Listed - Fiscal year-end: 2025.12.31 (1-1) Business Lines (as of 2026.05.01) - C2612 (Manufacture of diodes, transistors and similar semiconductor devices) — Driver IC - C2622 (Manufacture of printed circuit boards and electronic component mounting boards) — Heat-dissipation substrates - L6811 (Real estate leasing) — Real estate leasing - N7639 (Leasing of other industrial machinery and equipment) — Semiconductor process equipment leasing (2) Financial Position (Separate Balance Sheet, as of 2025.12.31, unit: KRW millions, %) - Current assets: 1,052,637 - of which Cash & cash equivalents: 170,216 - Non-current assets: 333,635 - Total assets: 1,386,272 - Current liabilities: 239,743 - Non-current liabilities: 32,373 - Total liabilities: 272,116 - of which Borrowings: - - Capital stock: 8,132 - Total equity: 1,114,156 - Debt-to-equity ratio: 24.42% (3) Income Statement (Separate, as of 2025.12.31, unit: KRW millions) - Revenue: 1,639,071 - Operating profit: 105,577 - Other income, etc.: 54,354 - Other expenses, etc.: 53,897 - of which Interest expense: 3,029 - Net income: 82,499 (4) Overseas Affiliates (where a domestic affiliate is the largest shareholder, as of 2026.05.01) - LX Semicon U.S.A., Inc — Semiconductor sales support — 100% internal ownership — USA — FY-end 2025.12.31 — Largest shareholder: LX Semicon (100%) - LX Semicon China Co., Ltd. — Technical consulting & service — 100% — China — 2025.12.31 — LX Semicon (100%) - LX Semicon Japan Co., Ltd. — R&D and service — 100% — Japan — 2025.12.31 — LX Semicon (100%) - LX Semicon Taiwan Co., Ltd. — Semiconductor sales support — 100% — Taiwan — 2025.12.31 — LX Semicon (100%) (5) Changes in Affiliate Composition (additions/removals, domestic and overseas): None. 2. Status of Executives, Board of Directors, etc. [ESG] (1) Executive Status [ESG] — Registered Directors (as of 2026.05.01) - Lee Yoon-tae — CEO (Chair of the Board, Chair of Finance Committee) — Appointed 2024.03.21, Registered 2024.03.25, Term ending 2027.03.20 — Former CEO of Samsung Electro-Mechanics — New appointment - Lee Yoon-tae — Inside Director (Chair of the Board, Chair of Finance Committee) — same dates — New appointment - Lee Hyuk-joo — Inside Director — Appointed 2026.03.26, Registered 2026.04.01, Term ending 2029.03.25 — Concurrent post: Advanced Power Device Technology Co., Ltd. — Former Finance Team Manager at LG Corp.; Former Head of Finance Office at LX Semicon; Currently Head of Management Support Division at LX Semicon — New appointment - Noh Jin-seo — Other Non-executive Director — Appointed 2021.03.18, Registered 2021.03.24, Term ending 2027.03.20 — Concurrent posts at LX Hausys, LX MMA, LX Holdings, LX MDI, LX Glas, LX Ventures (all affiliates) — Former LG Corp. Strategy Head; Former LG Electronics Robot Business Center Head; Former LX Holdings CSO; Currently CEO of LX Holdings — Reappointed - Jeong Seong-wook — Outside Director (Chair of ESG Committee) — Appointed 2023.03.23, Registered 2023.04.05, Term ending 2029.03.25 — Concurrent post: Articron Co., Ltd. — Currently Professor of Electrical & Electronic Engineering, Yonsei University — Reappointed - Jeong Seong-wook — Audit Committee Member (Chair of ESG Committee) — same — Reappointed - Kim Nam-soo — Outside Director — Appointed 2024.03.21, Term ending 2027.03.20 — Currently Professor of Electrical & Information Engineering, Seoul National University — New - Kim Nam-soo — Audit Committee Member — same — New - Han Sang-beom — Outside Director — Appointed 2024.03.21, Term ending 2027.03.20 — Former CEO of LG Display — New - Kim Beom — Outside Director (Chair of Audit Committee) — Appointed 2025.03.20, Term ending 2028.03.19 — Currently Professor of Finance, Soongsil University — New - Kim Beom — Audit Committee Member (Chair of Audit Committee) — same — New (2) Board of Directors, Board Committees, General Shareholders' Meeting System, Exercise of Minority Shareholder Rights [ESG] A. Board of Directors Operation (period 2025.05.02 — 2026.05.01) Board members: Lee Yoon-tae (Chair), Kim Hoon, Noh Jin-seo, Kim Beom, Jeong Seong-wook, Kim Nam-soo, Han Sang-beom - 2025.07.24: (1) Appointment of compliance officer; (2) Approval of capex limit for facility expansion of heat-dissipation substrate business — Approved as proposed, 4 outside directors attended - 2025.09.18: Approval of self-dealing transactions with affiliates — Approved as proposed, 4 outside directors attended (Large internal transaction disclosure date: 2025.09.18) - 2025.11.04: (1) Approval of self-dealing transactions with major shareholders, etc.; (2) Approval of LX trademark use agreement; (3) Approval of executive officer personnel — Approved as proposed - 2026.02.05: (1) Approval of 2026 business plan; (2) Approval of 27th-term financial statements & business report; (3) Approval of dividend record date; (4) Approval of industrial safety and health plan — Approved as proposed - 2026.02.24: Approval of convocation and agenda of 27th Annual General Meeting — Approved as proposed Board members (from 2026.03.26): Lee Yoon-tae (Chair), Lee Hyuk-joo, Noh Jin-seo, Kim Beom, Jeong Seong-wook, Kim Nam-soo, Han Sang-beom - 2026.03.26: (1) Appointment of ESG Committee members; (2) Extension of credit-line agreement with financial institutions; (3) Approval of performance incentive payment for executive officers; (4) Approval of director remuneration execution — Approved as proposed - 2026.04.30: (1) Approval of amendments to Board, Audit Committee, and ESG Committee regulations; (2) Approval of amendment to executive-officer HR management regulations — Approved as proposed B. Board Committees (period 2025.05.02 — 2026.05.01) Audit Committee — Members: Kim Beom, Jeong Seong-wook, Kim Nam-soo - 2025.07.24: (no agenda) - 2025.11.04: (no agenda) - 2025.12.11: Selection of external auditor — Approved as proposed - 2026.02.05: (no agenda) - 2026.02.24: (1) Approval of Audit Committee's evaluation report on internal accounting control system; (2) Approval of Audit Committee's evaluation opinion on internal monitoring mechanism; (3) Approval of Audit Committee's audit report on financial statements and business report — Approved as proposed - 2026.04.30: Confirmation of 2025 external auditor's audit activities — Approved as proposed [Translation truncated]