Q1 2026 Quarterly Report (20th Fiscal Year) — Cheonbo

Summary

Cheonbo filed its Q1 2026 quarterly report covering January 1 to March 31, 2026, the company's 20th fiscal year. The report confirms three unlisted consolidated subsidiaries with no changes during the period, and reaffirms the company's classification as a mid-sized enterprise. A credit rating of BB+ was assigned by Korea Enterprise Data on April 1, 2026, indicating debt repayment capability remains adequate but with speculative elements under changing market conditions. The disclosure also recaps the corporate history, including the 2017 spin-off of Cheonbo Shinsozai, the 2019 KOSDAQ listing, and recent capital injections into subsidiaries Cheonbo Shinsozai and Cheonbo BLS. No major business restructuring, M&A, or management changes are reported in this filing excerpt.

Historical Impact

2 past Quarterly Report · ≈ 10-Q events at Cheonbo

Median +5d

-12.13%

Range

-19.10% to -5.15%

Positive outcomes

0/2

Filed	P₀	P₊₅	+5d
Nov 13, 2025	₩69,100	₩55,900	-19.10%
May 14, 2025	₩34,950	₩33,150	-5.15%

Full Translation

Quarterly Report 6.5 Cheonbo Co., Ltd. 1 Y 151111-0031157 QUARTERLY REPORT (20th Fiscal Year) Fiscal Year: From January 1, 2026 to March 31, 2026 To: Financial Services Commission / Korea Exchange Date of Submission: May 15, 2026 Type of Submitting Entity: Listed Stock Corporation Exemption Reason: None Company Name: Cheonbo Co., Ltd. Representative Director: Lee Sang-yul Head Office Address: 312 Jungwon Sanup-ro, Judeok-eup, Chungju-si, Chungcheongbuk-do Phone: 070-4865-2525 Website: http://www.chunbochem.com Responsible Preparer: (Title) Executive Director (Name) Lee Dong-ho Phone: 070-4865-2525 TABLE OF CONTENTS [Confirmation by CEO, etc.] CEO Confirmation Letter I. COMPANY OVERVIEW 1. Company Overview 1. Overview of Consolidated Subsidiaries (Applicable only when listed corporations preparing consolidated financial statements submit business reports or quarterly/semi-annual reports) a. Status of Consolidated Subsidiaries (Summary) (Unit: companies) - Listed: Beginning 0, Increase 0, Decrease 0, Ending 0, Major subsidiaries 0 - Unlisted: Beginning 3, Increase 0, Decrease 0, Ending 3, Major subsidiaries 2 - Total: Beginning 3, Increase 0, Decrease 0, Ending 3, Major subsidiaries 2 * Refer to 'Detailed Table-1. Status of Consolidated Subsidiaries (Details)' for details. b. Changes in Consolidated Subsidiaries: None (no new consolidations or exclusions) c. SME Classification: - SME: Not applicable - Venture Company: Not applicable - Mid-sized Enterprise: Applicable d. Legal and Commercial Names: The company's name is 'Cheonbo Co., Ltd.', written in English as 'Chunbo Co., Ltd.' The abbreviated form is '(Chu) Cheonbo' or 'chunbo'. e. Date of Establishment and Duration: The company was established on October 8, 2007, and listed on the KOSDAQ market on February 11, 2019. f. Head Office Address, Phone, Website: - Address: 312 Jungwon Sanup-ro, Judeok-eup, Chungju-si, Chungcheongbuk-do - Phone: 070-4865-2525 - Website: www.chunbochem.com g. Main Business: The company's main businesses are the development, manufacturing, and sale of electronic materials and secondary battery (lithium-ion) electrolytes. For further details, refer to 'II. Business Content.' h. Business Purposes: (1) Manufacturing and sale of EMC (Epoxy Molding Compounds) resin raw materials (2) Manufacturing and sale of fine chemical compounds (3) Manufacturing and sale of foods and food additives (4) Manufacturing and sale of additives for LCD, LED, semiconductors, etc. (5) Manufacturing and sale of pharmaceutical raw materials and intermediates (6) Manufacturing and sale of pharmaceuticals and quasi-drugs (7) Manufacturing and sale of secondary battery electrolyte additives and electrolytes (8) Goods processing, consignment, manufacturing equipment or apparatus leasing (9) Research services, know-how or technology sales and leasing (10) Issuance of goods sale undertaking certificates (11) Goods storage, warehousing, transportation (12) Wastewater or waste treatment and recycling (13) Import/export, trade brokerage, trade services, wholesale and retail related to the above (14) Real estate trading and leasing (15) All incidental businesses and investments related to the above i. Affiliated Companies: Refer to 'IX. Matters Relating to Affiliates'. j. Stock Listing/Registration and Special Listing Information: - Listing Status: KOSDAQ - Listing Date: February 11, 2019 - Special Listing Type: Not applicable k. Credit Rating Information: 1) Rating Date: April 1, 2026 2) Rating Agency: Korea Enterprise Data 3) Credit Rating: BB+ 4) Definition of Credit Ratings: - AAA: Highest level of debt repayment capability - AA: Very strong debt repayment capability, though slightly inferior to AAA - A: Strong debt repayment capability, but more susceptible to recession and environmental change than higher ratings - BBB: Good debt repayment capability, but potential for decline depending on future recession and environmental changes - BB: No issues with debt repayment capability, but contains speculative elements regarding stability depending on economic conditions and market environment changes - B: Has debt repayment capability, but potential for default in future economic deterioration; speculative in terms of stability - CCC: Potential for default at present, highly speculative - CC: High potential for default - C: Very high potential for default - D: Currently in default * '+' or '-' attached for relative ranking within 'AA' through 'CCC' grades 2. Company History a. Major Milestones: - 2007.10: Cheonbo Co., Ltd. established (capital 200 million KRW) - 2008.02: Plant No. 1 completed - 2008.09: Potassium and acetate compound plant completed - 2009.03: Started production of pharmaceutical raw materials - 2010.01: Certified as corporate-affiliated research institute - 2010.06: LCD Etchant (5-ATZ) plant completed - 2011.06: Korea System Certification <Quality Management System> certification [ISO9001:2008] - 2011.12: Semiconductor material synthesis plant and sublimation purification plant completed - 2012.02: Secondary battery electrolyte additive plant (Plant No. 2) completed - 2012.04: Small and Medium Business Promotion Corporation <Venture Company Confirmation> - 2013.12: Technical Research Institute research building completed - 2014.02: Core secondary battery electrolyte additive plant completed - 2014.02: KOSHA <Occupational Safety and Health Management KOSHA18001> certification - 2014.10: Chungcheongbuk-do <Employment Excellence Company> certification - 2014.12: Samsung SDI <Excellent Partner Award> - 2015.02: Pharmaceutical raw materials plant and Pilot plant completed - 2015.05: SMBA certification - 2015.10: Ministry of Environment <Safety Management Community Excellence Case Contest> Encouragement Award - 2015.11: Chungcheongbuk-do <Quality Management Excellence Company> designation - 2015.12: SMBA <Industry-Academy-Research Cooperation Technology Development> commendation - 2016.04: Ministry of Employment and Labor <Youth-Friendly SME> selection - 2016.09: LiFSI electrolyte plant completed - 2017.04: SMBA selection - 2017.05: Subsidiary Cheonbo Shinsozai established (physical division) - 2017.06: Ministry of Environment <Environmental Conservation> commendation - 2017.11: Chinese subsidiary Changzhou Chunbao established - 2017.12: Annual exports reached USD 30 million - 2018.03: LiPO2F2 electrolyte plant No. 1 completed - 2019.02: KOSDAQ listing - 2019.05: Cheonbo Shinsozai paid-in capital increase (20 billion KRW) - 2019.09: LiPO2F2 electrolyte plant No. 2 completed - 2020.03: Ministry of Trade, Industry and Energy <Materials and Parts Specialized Enterprise> selection - 2020.04: Cheonbo Shinsozai paid-in capital increase (15 billion KRW) - 2020.06: LiFSI electrolyte plant No. 2 completed; LiPO2F2 electrolyte additional expansion - 2020.07: Cheonbo Shinsozai paid-in capital increase (20 billion KRW) - 2021.02: Cheonbo Shinsozai paid-in capital increase (20 billion KRW) - 2021.02: Cheonbo Investment established - 2021.06: LiBOB electrolyte Yeongpyeong plant completed; LiPO2F2 electrolyte Yeongpyeong plant completed - 2021.06: Cheonbo BLS established - 2021.09: Cheonbo BLS paid-in capital increase (5 billion KRW) - 2022.01: Ministry of Trade, Industry and Energy <Materials/Parts/Equipment Champion Company> selection - 2022.02: Cheonbo BLS paid-in capital increase (275 billion KRW) - 2022.03: Gold Tower Industrial Service Medal awarded - 2023.05: Cheonbo BLS paid-in capital increase (100 billion KRW) - 2024.12: Selected as Supply Chain Stabilization Leading Enterprise (Cheonbo Shinsozai) - On August 29, 2022, the company name was changed from Jungwon Shinsozai Co., Ltd. to Cheonbo Shinsozai Co., Ltd. - On February 27, 2025, the company name was changed from Solric Investment Co., Ltd. to Cheonbo Investment Co., Ltd. b. Head Office Location and Changes: The head office is located at 312 Jungwon Sanup-ro, Judeok-eup, Chungju-si, Chungcheongbuk-do. No changes since initial establishment. c. Mergers, Spin-offs, Comprehensive Stock Exchange/Transfer, Significant Business Transfers/Acquisitions: - May 2017: Physical division of secondary battery business and establishment of new entity (Cheonbo Shinsozai) d. Significant Changes in Management: [Translation truncated]