Mirae Asset Crosses 5% Ownership Threshold (Passive Stake)

Report on Bulk Holdings of Stocks, etc. (Simplified Form) Version 6.0 Korea Circuit Filed: 2026-06-09 Report on Bulk Holdings of Stocks, etc. (Simplified form: Filings under Article 147 of the Financial Investment Services and Capital Markets Act where the purpose is NOT to influence management control, and where the reporter is a professional investor under the latter part of Paragraph 1 of the same Article) To: Financial Services Commission Reporting obligation trigger date: June 9, 2026 To: Korea Exchange Report preparation reference date: June 9, 2026 Reporter: Mirae Asset Global Investments Co., Ltd. === SUMMARY INFORMATION === Professional investor classification (reporting exemption): - Issuer: Korea Circuit Co., Ltd. Relationship with issuer: Shareholder Report type: New filing Number and ratio of shares held: - Previous report: 1,188,811 shares / 4.96% - This report: 1,256,367 shares / 5.24% Voting rights: not applicable (-) Reason for filing: New (5% threshold crossed) Purpose of holding: Simple investment (passive) The reporter certifies that, as of the reference date, the holdings of the reporter and special-relationship parties have been accurately prepared in accordance with relevant regulations and reporting instructions, with no material misstatements or omissions. Certification (simple investment purpose): certification.jpg === PART 1: OVERVIEW OF THE REPORT === 1. Issuer Information - Company name: Korea Circuit Co., Ltd. - Company code: 007810 - Corporate classification: KOSPI-listed corporation - Total issued shares with voting rights: 23,982,620 2. Bulk Holder Information A. Reporter (1) Reporter overview - Report type: New / Individual - Reporter classification: Financial institution - Nationality: Republic of Korea - Name (Korean): Mirae Asset Global Investments Co., Ltd. - Name (English): Mirae Asset Global Investments - Address: 33 Jongno, Jongno-gu, Seoul - Business registration number: 211-86-23290 - Business: Financial services, real estate - Relationship with issuer: Shareholder - Contact: Stewardship Team, Senior Manager Seo Yeon-woo, 02-377-****, ****@miraeasset.com (2) Reporter details - Legal nature: Asset management company - Total assets (or AUM): KRW 199,395,368,880,570 - Liabilities: - - Equity: - - Paid-in capital: KRW 67,860,715,000 - Representatives: CEO Choi Chang-hoon, Lee Jun-yong - Decision-making body: Investment Strategy Committee - Largest shareholder: Park Hyeon-joo - Largest shareholder stake: 60.19% B. Special-Relationship Parties (1) Overview 1. Mirae Asset Discovery Securities Investment Company (Equity) — domestic corporation, managed fund, BRN 107-86-02109, Korea, 33 Jongno, Jongno-gu, Seoul, investment company, shareholder 2. Mirae Asset Dream Target Securities Investment Company (Equity) — domestic corporation, managed fund, BRN 107-86-39682, Korea, 33 Jongno, Jongno-gu, Seoul, investment company, shareholder (2) Details 1. Mirae Asset Discovery Securities Investment Company (Equity) - Legal nature: Stock corporation - Total assets / AUM: KRW 112,011,131,300 - Paid-in capital: KRW 119,365,773,605 - Representative: Mirae Asset Global Investments - Decision-making body: General shareholders' meeting (Board) - Largest shareholder: Mirae Asset Global Investments 2. Mirae Asset Dream Target Securities Investment Company (Equity) - Legal nature: Stock corporation - Total assets / AUM: KRW 32,017,860,437 - Paid-in capital: KRW 10,793,040,469 - Representative: Mirae Asset Global Investments - Decision-making body: General shareholders' meeting (Board) - Largest shareholder: Mirae Asset Global Investments C. Collective Investment Manager: Not applicable 3. Number and Ratio of Shares Held - Previous report (2026-06-08): Mirae Asset Global Investments + 2 SRPs, 1,188,811 shares (4.96%); voting-right shares 1,188,811 (4.96%); total voting shares outstanding 23,982,620 - This report (2026-06-09): 1,256,367 shares (5.24%); voting-right shares 1,256,367 (5.24%); total voting shares outstanding 23,982,620 - Change: +67,556 shares (+0.28%p); voting-right shares +67,556 (+0.28%p); outstanding shares: 0 change 4. Reason for Change - Method: On-market (and off-market) buy/sell - Reason: As an asset management company, the reporter executes purchases, sales, and ETF creations/redemptions of the subject shares based on internal investment decisions, resulting in changes to the number of shares held. - Reason for amendment: - 5. Purpose of Holding: Simple investment (passive) === PART 2: BULK HOLDING DETAILS === 1. Holdings by Type of Securities - Reporter (Mirae Asset Global Investments, BRN 211-86-23290): Common stock 1,230,563 / Total 1,230,563 / 5.13% - SRP (Mirae Asset Discovery, BRN 107-86-02109): Common stock 22,303 / 0.09% - SRP (Mirae Asset Dream Target, BRN 107-86-39682): Common stock 3,501 / 0.02% * Reporter's holdings include 379,143 shares (1.58%) held under discretionary investment management contracts. - Total voting shares outstanding (I): 23,982,620 - Potential shares held: - - Holding ratio: 5.24% - Common stock holding ratio (A / I): 5.24% 2. Proprietary vs. Customer Account Holdings (for financial institutions) - Mirae Asset Global Investments (self): Proprietary 0 / Customer 1,230,563 (5.13%) / Total 1,230,563 (5.13%) - Mirae Asset Discovery (SRP): Customer 22,303 (0.09%) / Total 22,303 (0.09%) - Mirae Asset Dream Target (SRP): Customer 3,501 (0.02%) / Total 3,501 (0.02%) - Combined total: 1,256,367 (5.24%) === PART 3: CHANGES SINCE PREVIOUS REPORT === 1. Summary of Changes A. Changes in shares held - Reporter (Mirae Asset Global Investments, BRN 211-86-23290): Common stock 1,230,563 / Total 1,230,563 / 5.13% - SRP (Mirae Asset Discovery, BRN 107-86-02109): Common stock 22,303 / Total 22,303 / 0.09% - SRP (Mirae Asset Dream Target, BRN 107-8... [Translation truncated]