10%+ Shareholder LAPIS Plans to Sell 1.55M Rights Offering Warrants

Report on Trading Plans for Specified Securities by Executives and Major Shareholders (v6.0) Filer: LB Semicon Co., Ltd. Submitted to: Securities and Futures Commission / Korea Exchange Trading start date (settlement): July 20, 2026 Reporting obligation date: June 19, 2026 Report preparation reference date: June 19, 2026 The filer confirms that this trading plan has been accurately prepared in accordance with relevant laws, with no material misstatements or omissions. Filer: LAPIS Semiconductor Co., Ltd. 1. Issuing Company - Company name: LB Semicon Co., Ltd. - Classification: KOSDAQ-listed corporation - Company code: 061970 - Total issued shares: 58,083,006 2. Filer - Classification: Foreign corporation - Name (Korean): 라피스 세미컨덕터 - Name (English): LAPIS Semiconductor Co., Ltd. - Business registration number: 49561 - Address: 2-chome, Shin-Yokohama, Kohoku-ku, Yokohama, Japan - Relationship to issuer: Major shareholder, holding 10% or more - Executive position: None - Business contact: Planning Team, LB Semicon Co., Ltd. (Manager: Han Sun-kwang) 3. Holdings and Trading Plan A. Holdings at time of filing - Common shares (A): 7,489,645 - Subscription rights certificates (B): 1,547,367 - Total: 9,037,012 (15.16%) - Common stock ownership ratio: 12.89% - Specified securities ownership ratio: 15.16% B. Detailed trading history during the 6 months preceding the trading start date: None. C. Trading Plan (1) Purpose: Filer's sale of subscription rights certificates (Warrants/Pre-emptive Rights Certificates). (2) Quantity and amount: - Trading start date (settlement): July 20, 2026 - Trading end date (settlement): July 23, 2026 - Trading period: 4 days - Method: Off-market sale (disposal) - Security type: Subscription rights certificates - Quantity: 1,547,367 - Disposal price per unit: KRW 4,125 - Transaction amount: KRW 6,382,888,875 Note: The disposal unit price is stated as the 1st issue price of the rights offering with general public subscription for forfeited shares, in accordance with the disclosure format. The final issue price will be confirmed three trading days prior to the existing shareholder subscription start date. The actual disposal price will be determined as the arithmetic mean of the closing prices over 5 business days during the warrant listing period (July 10-16, 2026), and may differ from the price stated herein. * The indicative disposal price of KRW 4,125 and approximate transaction value of KRW 6.4 billion are formal figures applying the 1st issue price of the rights offering per disclosure format requirements. Per Article 173-3(3) of the law, actual transactions may occur within 70-130% of the planned transaction amount; therefore, the actual price and quantity may differ. The subscription rights certificates are scheduled to be issued on July 3, 2026 (the planned new share allocation notification date). If the schedule of the ongoing rights offering changes, the trading dates may also change accordingly. (3) Basis for unit price: As described in Section (2) — based on the 1st issue price of the rights offering, with the final price to be determined as the 5-day arithmetic mean of closing prices during the warrant listing period (July 10-16, 2026). (4) Contracts related to the planned transaction: None. D. Transaction Scale Assessment - Quantity: 1,547,367 - Unit price: KRW 4,125 - Transaction amount: KRW 6,382,888,875 - Trading ratio (P / J+P): 2.59% E. Expected holdings after completion - Common shares: 7,489,645 - Subscription rights certificates: 0 - Total: 7,489,645 (12.89%) - Common stock ownership ratio: 12.89% - Specified securities ownership ratio: 12.89%