VP Jung Eui Hoon sells entire 2,419-share stake at KRW 61,315 — KCTech

Summary

Vice President Jung Eui Hoon, a non-registered executive, disposed of his entire holding of 2,419 common shares of the company on June 5, 2026 via on-market sale at KRW 61,315 per share. This reduced his ownership from 0.01% to 0% of the 19,798,661 outstanding shares. The transaction value is approximately KRW 148 million, a small absolute amount but notable as the executive now holds zero shares. Insider sell-downs to zero can be read as a mildly negative signal, though the stake size is immaterial relative to the float.

Historical Impact

4 past Insider Ownership Change · ≈ Form 4 events at KCTech

Median +5d

-5.64%

Range

-7.63% to -4.62%

Positive outcomes

0/4

Filed	P₀	P₊₅	+5d
Mar 25, 2026	₩49,750	₩47,450	-4.62%
Mar 25, 2026	₩49,750	₩47,450	-4.62%

Full Translation

Report on Ownership of Specific Securities by Executives and Major Shareholders Form 6.1 KCTech Co., Ltd. 2026-06-05 Report on Ownership of Specific Securities by Executives and Major Shareholders To: Securities and Futures Commission To: Korea Exchange Date of reporting obligation: 2026.06.05 Report preparation reference date: 2026.06.05 * The reporting party hereby confirms that the ownership status of specific securities as of the reference date has been accurately prepared in accordance with relevant laws and instructions, and that there is no false statement or omission of material facts. Reporter: Jung Eui Hoon 1. Issuer Information - Company Name: KCTech Co., Ltd. - Corporation Type: KOSPI-listed company - Company Code: 281820 - Total Issued Shares: 19,798,661 2. Reporter Information - Report Category: Change - Reporter Category: Individual (Domestic) - Name (Korean): 정의훈 - Name (Hanja/English): 鄭義勳 (Jung Eui Hoon) - Date of Birth: 1964.01.15 - Address: Mangpo-dong, Yeongtong-gu, Suwon-si, Gyeonggi-do - Relationship with Issuer: Executive (Non-registered) - Position: Vice President - Appointment Date: 2017.11.01 - Retirement Date: - - Major Shareholder: - - Business Contact: KCTech Co., Ltd., Management Planning Team, Senior (Park No-won) 3. Ownership Status of Specific Securities A. Number and Ratio of Specific Securities Owned - Previous Report (2017.12.05): 2,419 shares (0.01%) - Current Report (2026.06.05): 0 shares (0%) - Change: -2,419 shares (-0.01%) B. Holdings by Type of Specific Securities - Common Stock: 0 shares - Warrants, CBs, BWs, Profit-sharing bonds, EBs, DRs, Other: - - Total: 0 shares (0%) - Total Issued Shares (J): 19,798,661 C. Detailed Change History - Reason: On-market sale (-) - Change Date: 2026.06.05 - Security Type: Common Stock - Before: 2,419 shares - Change: -2,419 shares - After: 0 shares - Acquisition/Disposal Unit Price: KRW 61,315 - Total: 2,419 → 0 shares at KRW 61,315