Shareholder IR Meeting — Subsidiary (Duksan Electera) Listing & Shareholder Protection — DUKSAN Tehera

Summary

An in-person investor relations meeting is scheduled for September 18, 2026 at NH Investment & Securities headquarters in Seoul, running from 14:00 to 16:00. The primary agenda is to solicit shareholder input on the planned IPO of the company's wholly-owned subsidiary, Duksan Electera Co., Ltd. Management will present a shareholder impact assessment and detail shareholder protection measures related to the subsidiary listing. Attendance is restricted to current shareholders, who must register online by September 17 at 18:00 or present ID and account balance proof for on-site entry. Supporting IR materials will be published on September 10 via the KRX KIND system and the company's official website.

Filed	P₀	P₊₅	+5d
Sep 7, 2026	₩11,980	₩12,610	+5.26%

Filed

P₀

P₊₅

+5d

Sep 7, 2026

₩11,980

₩12,610

+5.26%

Full Translation

Duksan Tehera / IR (Investor Relations) Meeting Notice / (2026.09.07) Investor Relations (IR) Meeting 1. Date & Time Event Date: September 18, 2026 Time (local): 14:00 – 16:00 2. Venue 4F Grand Hall 2, NH Investment & Securities Headquarters, Seoul 3. Eligible Attendees Shareholders of Duksan Tehera Co., Ltd. 4. Purpose To strengthen shareholder communication through a shareholder forum and to gather opinions regarding the IPO listing of the subsidiary, Duksan Electera Co., Ltd. 5. Registration Method <Advance Registration and On-Site Check-In> 1. Advance Registration – To attend the shareholder forum, apply via the Shareholder Inquiry Board on the company website (Deadline: Thursday, September 17 at 18:00) (https://www.dstp.co.kr/ir/shareholder-Inquiries.php?cate=3#Tab) 2. On-Site Check-In – Limited to shareholders of record as of the date of the shareholder forum; attendees must bring proof of identity (government-issued ID) and proof of shareholding for on-site verification. * Acceptable proof of shareholding examples: – Stock balance certificate – Screenshot from HTS/MTS showing held securities and quantities * Please note that on-site registration may be difficult due to venue capacity constraints and the need for smooth event operations. Your understanding is appreciated. 6. Key Agenda Items – Shareholder impact assessment and shareholder protection measures related to the IPO listing of the subsidiary, Duksan Electera Co., Ltd. 7. Sponsoring Institution NH Investment & Securities 8. Event Confirmation Date September 7, 2026 9. Contact Department (Contact Person): IR / Disclosure Department (Deputy General Manager Jung Eon-jin) Phone (Fax): 041-903-9656 (041-903-9699) 10. IR Material Publication Publication Date: September 10, 2026 Publication Channels: 1. Korea Exchange KIND System (http://kind.krx.co.kr) 2. Duksan Tehera Official Website (http://www.dstp.co.kr)