Rights Offering: First Issue Price Confirmed at KRW 4,125 per Share

Securities Registration Statement (Equity Securities) 6.1 LB Semicon Co., Ltd. - Confirmation of Securities Issuance Terms To: Financial Services Commission Date: June 17, 2026 Company Name: LB Semicon Co., Ltd. CEO: Lee Dae-gyo Head Office: 138 Cheongbuksandan-ro, Cheongbuk-eup, Pyeongtaek-si Phone: 031-680-1600 Website: http://www.lbsemicon.com Responsible Officer: Kim Jung-gyu, Head of Management Division 1. Initial filing date of the registration statement subject to amendment: May 15, 2026 [Registration Statement Filing and Amendment History] - May 15, 2026: Securities Registration Statement (Equity) - Initial filing - June 1, 2026: [Amendment] Securities Registration Statement - 1st amendment (bold blue) - June 15, 2026: [Amendment] Securities Registration Statement - 2nd amendment (bold green) - June 17, 2026: [Issuance Terms Confirmed] Securities Registration Statement - 1st issue price confirmation (bold orange) 2. Type and quantity of securities offered: 12,000,000 registered common shares 3. Offering amount: KRW 49,500,000,000 (based on the 1st issue price) 4. Reason for amendment: Amendment due to confirmation of the 1st issue price 5. Amended Items Common items: - Before: Per-share offering price KRW 4,150 / Total offering KRW 49,800,000,000 - After: Per-share offering price KRW 4,125 / Total offering KRW 49,500,000,000 [Note 1 - After amendment] (Unit: KRW, shares) - Type of securities: Common stock - Quantity: 12,000,000 - Par value: 500 - Offering price: 4,125 - Total offering: 49,500,000,000 - Offering method: Rights offering with public subscription of unsubscribed shares Underwriting: Yes / Listing offering: No / N/A Lead underwriter: KB Securities - 12,000,000 common shares, KRW 49,500,000,000 Underwriting fee: 0.8% of total offering; Failure fee: 10.0% of unsubscribed underwriting amount; Method: Firm-commitment Schedule: - Subscription period (existing shareholders): July 29-30, 2026 - Payment due: August 6, 2026 - Subscription notice: July 31, 2026 - Allocation notice: August 6, 2026 - Record date: June 19, 2026 - Short-sale restriction period prohibiting subscription: May 18, 2026 to July 24, 2026 Use of Proceeds: - Facility investment: KRW 30,000,000,000 - Operating capital: KRW 19,500,000,000 (printed as 19,500,00,000 in original) - Issuance costs: KRW 494,200,000 Warrant matters: None Selling shareholder matters: None General subscriber put-back rights: None [Material Facts Report] Material Facts Report (Capital Increase Decision) - June 17, 2026 [Other] 1) The lead underwriter for LB Semicon's rights offering with public subscription of unsubscribed shares is KB Securities Co., Ltd. 2) This capital increase is by firm-commitment underwriting. The lead underwriter will firm-commit any final unsubscribed shares following rights and public offering. See 'Part 1 I. 5. Matters related to underwriting' for details. 3) The above offering price and issuance costs are calculated based on the 1st issue price and may change. The final issue price will be determined three business days before the subscription date. 4) The above subscription period applies to existing shareholders; general public subscription is on August 3 and 4, 2026 (2 days). 5) Pursuant to Article 9(2) of the Securities Underwriting Business Regulations, if shares to be allocated to high-yield/high-risk investment trusts, venture investment trusts, and general subscribers are 50,000 shares or less (par value KRW 500 basis), or if the public offering amount of shares to be allocated is KRW 100 million or less, allocation to subscribers may not occur. 6) The schedule in this registration statement may change due to amendments arising from material changes during the Financial Supervisory Service's review. 7) The effectiveness of the registration statement does not constitute a government endorsement or guarantee of the truth, accuracy, or value of the securities; investment is entirely at the discretion and risk of shareholders and investors. [Translation truncated]