Q1 2026 Quarterly Report (20th Fiscal Year) — Hana Materials

Summary

Hana Materials filed its 20th-period quarterly report covering January 1 to March 31, 2026. The company remains a mid-sized enterprise manufacturing silicon and silicon carbide (SiC) electrodes and rings used as consumable parts in semiconductor etching processes, with two non-listed consolidated subsidiaries unchanged from the prior period. The credit rating from eCredible was reaffirmed at BBB on March 24, 2026, holding steady since the 2024 downgrade from BBB+. At the March 23, 2026 AGM, Kang Dong-ho was newly appointed as an inside director and Choi Sun-jip as a new outside director, while inside director Choi Wang-ki was reappointed; inside director Kim Soon-young and outside director Jung Yong-joo retired upon term expiry. CEO Kim Hyun-joo continues to lead the board.

Historical Impact

2 past Quarterly Report · ≈ 10-Q events at Hana Materials

Median +5d

-16.18%

Range

-20.96% to -11.40%

Positive outcomes

0/2

Filed	P₀	P₊₅	+5d
Nov 13, 2025	₩46,500	₩41,200	-11.40%
May 15, 2025	₩31,250	₩24,700	-20.96%

Full Translation

QUARTERLY REPORT 6.5 Hana Materials Inc. 1 Y 161511-0086227 QUARTERLY REPORT (20th Fiscal Year) Fiscal period: January 1, 2026 to March 31, 2026 Submitted to: Financial Services Commission / Korea Exchange Date: May 14, 2026 Filer type: Listed corporation Exemption reason: None Company: Hana Materials Inc. CEO: Kim Hyun-joo Head office: 42, 3gongdan 3-ro, Seobuk-gu, Cheonan-si, Chungnam (Tel: 041-410-1015; Website: https://www.hanamts.com) Responsible preparer: Kang Dong-ho, Executive Managing Director (Tel: 041-410-1215) [Confirmation by CEO et al.] Confirmation signature of CEO et al. (image) I. Company Overview 1. Company Overview a. Summary of consolidated subsidiaries (Unit: companies) - Listed: 0 at start, 0 increase, 0 decrease, 0 at end - Unlisted: 2 at start, 0 increase, 0 decrease, 2 at end - Total: 2 at start, 2 at end * See 'Detailed Table-1. Status of Consolidated Subsidiaries (Detail)' for full details. Note 1) The company established Hana S&B Investment Co., Ltd. on January 5, 2023 to engage in the new technology venture capital business. Note 2) On May 14, 2024, the company invested KRW 3.0 billion (93.75%) as an LP in the 'Hana S&B Materials-Parts-Equipment No.1 New Technology Fund' organized by (GP) Hana S&B Investment Co., Ltd. 1-1. Changes in consolidated subsidiaries: None (no new consolidations, no removals). b. Legal and commercial name The company's name is 'Hana Materials Inc.' (English: Hana Materials Inc.). c. Date of establishment Established on January 23, 2007. On April 19, 2013, the company changed its name from Hana Silicon Inc. to Hana Materials Inc. d. Head office address, phone, website - Address: 42, 3gongdan 3-ro, Seobuk-gu, Cheonan-si, Chungnam - Phone: 041-410-1015 - Website: https://www.hanamts.com e. SME classification As of the report submission date, the company is not classified as a small or medium-sized enterprise under Article 2 of the Framework Act on SMEs, but is classified as a mid-sized enterprise under Article 2(1) of the Special Act on the Promotion of Growth and Strengthening of Competitiveness of Mid-Sized Enterprises. - SME: Not applicable - Venture: Not applicable - Mid-sized enterprise: Applicable f. Main business The company's main business is the manufacture and sale of electrodes and rings made of silicon and silicon carbide (SiC) materials, which are consumable parts used in the etching process — a core semiconductor manufacturing step. For further details, see 'II. Business Overview.' Business purposes stated in the Articles of Incorporation: 1. Manufacture and sale of parts and consumables for silicon wafer manufacturing processes 2. Manufacture and sale of parts and consumables for semiconductor manufacturing processes 3. Precision processing, cleaning, and sale of silicon materials 4. Manufacture and sale of ingots and wafers for solar cells 5. Waste treatment and recycling 6. Manufacture and sale of semiconductor raw materials 7. Sale and leasing of know-how technology 8. Real estate leasing and trading 9. Import/export and brokerage thereof 10. Development, manufacture, and sale of new materials 11. Manufacture, blending, and sale of ceramic products 12. Manufacture and sale of LED-related parts and materials 13. Import/export and manufacture/sale of non-metallic minerals and rare earths 14. Wholesale, retail, and consignment sales 15. Manufacture, modification, sale, leasing, and servicing of semiconductor and display manufacturing equipment 16. Manufacture, purification, charging, and sale of industrial gases for semiconductors and displays 17. Manufacture, purification, charging, and sale of other industrial gases 18. Import, manufacture, and sale of chemical products 19. Manufacture and sale of semiconductor ingots and wafers 20. Development, manufacture, and sale of secondary battery materials 21. Development, deployment, leasing, and sale of integrated system solutions 22. Manufacture and supply of factory automation, robot SI, electronic parts, computers, video, and communication equipment 23. Real estate development and sales 24. All ancillary businesses related to the above * At the 17th Annual General Meeting (March 25, 2024), the Articles of Incorporation were partially amended (added business purpose: real estate development and sales). g. Credit rating history (by eCredible, rating range AAA~D, all regular evaluations): - 2021.04.05: BB+ - 2021.09.09: BB+ - 2022.03.31: BBB+ - 2022.08.25: BBB+ - 2023.03.20: BBB+ - 2023.08.29: BBB+ - 2024.03.25: BBB - 2024.08.29: BBB - 2025.03.25: BBB - 2025.08.25: BBB - 2026.03.24: BBB Credit rating definitions (eCredible standard): - AAA: Highest debt repayment ability. - AA (AA+/AA/AA-): Very strong repayment ability, slightly below AAA. - A (A+/A/A-): Strong repayment ability, but more vulnerable to recession and environmental changes than higher grades. - BBB (BBB+/BBB/BBB-): Adequate repayment ability, but with potential for deterioration under recession or environmental change. - BB (BB+/BB/BB-): No current issue with repayment, but speculative aspects exist under economic/market changes. - B (B+/B/B-): Repayment possible, but speculative; default risk if conditions worsen. - CCC (CCC+/CCC/CCC-): Highly speculative; possibility of current default. - CC: High likelihood of default. - C: Very high likelihood of default. - D: Currently in default. - NCR: Rating cancelled, suspended, or changed due to confirmed false or falsified submissions. h. Listing status - Listing market: KOSDAQ - Listing date: April 28, 2017 - Special listing type: Not applicable 2. Corporate History a. Head office location and changes The head office is located at 42, 3gongdan 3-ro, Seobuk-gu, Cheonan-si, Chungnam, and has not been relocated since the company's establishment. b. Major changes in management and auditors As of the report submission date, the board is operated under CEO Kim Hyun-joo. Major changes in management during the disclosure period are as follows: - 2021.03.22 (AGM): Newly appointed inside director Kim Soon-young; reappointed inside director Oh Kyung-seok; term expiry — inside director Shin Dong-kook. - 2022.03.21 (AGM): Reappointed auditor Shin Moo. - 2023.03.24 (AGM): Newly appointed outside director Jung Yong-joo; reappointed inside director Choi Wang-ki; term expiry — outside director Kim Jin-hong. - 2024.03.25 (AGM): Newly appointed inside director Kim Hyun-joo; reappointed inside director Kim Soon-young; term expiry — inside director Oh Kyung-seok. - 2025.03.24 (AGM): Reappointed auditor Shin Moo. - 2026.03.23 (AGM): Newly appointed inside director Kang Dong-ho and outside director Choi Sun-jip; reappointed inside director Choi Wang-ki; term expiry — inside director Kim Soon-young and outside director Jung Yong-joo. Note 1) At the 17th AGM on March 25, 2024, inside director Oh Kyung-seok retired upon term expiry, inside director Kim Soon-young was reappointed, and Kim Hyun-joo was newly appointed as an inside director. Note 2) At the 18th AGM on March 24, 2025, auditor Shin Moo was reappointed. Note 3) At the 19th AGM on March 23, 2026... [Translation truncated]