National Pension Service Raises Stake to 9.09% via Net Purchase of 102,439 Shares — Korea Circuit

Summary

Korea's National Pension Service (NPS) filed a change-of-ownership report disclosing it increased its stake in Korea Circuit from 8.72% to 9.09%, a net addition of 102,439 shares. The accumulation occurred over six trading days between June 22 and June 30, 2026, through a series of paired on-market buys and sells that resulted in a consistent net-long bias. Average transaction prices declined steadily from roughly ₩140,000 on June 22 to approximately ₩91,000 on June 30, suggesting NPS was actively averaging down as the share price fell. NPS now holds 2,521,629 shares of the 27,731,009 total shares outstanding. The crossing of the 9% threshold is notable as it moves NPS closer to the 10% major-shareholder reporting boundary.

Historical Impact

2 past Insider Ownership Change · ≈ Form 4 events at Korea Circuit

Median +5d

-5.25%

Range

-9.17% to -1.34%

Positive outcomes

0/2

Filed	P₀	P₊₅	+5d
Jun 23, 2026	₩101,400	₩92,100	-9.17%
Mar 5, 2026	₩52,400	₩51,700	-1.34%

Full Translation

Report on Ownership Status of Specific Securities by Executives and Major Shareholders Report Version: 6.1 Company: Korea Circuit Co., Ltd. (주식회사 코리아써키트) Filing Date: June 22, 2026 Report on Ownership Status of Specific Securities by Executives and Major Shareholders To: Korea Financial Investment Commission To: Korea Exchange Obligation Trigger Date: June 22, 2026 Report Preparation Base Date: June 30, 2026 ※ The reporting party confirms that the ownership status of specific securities as of the report preparation base date has been accurately recorded in accordance with applicable regulations and filing guidelines, and that there are no material misstatements or omissions. Reporting Party: National Pension Service (국민연금공단) 1. Information on the Issuing Company - Company Name: Korea Circuit Co., Ltd. (주식회사 코리아써키트) - Corporate Classification: KOSPI-listed corporation - Company Code: 007810 - Total Shares Issued: 27,731,009 2. Information on the Reporting Party - Report Type: Change - Reporter Classification: Pension Fund / Qualified Professional Investor - Name (Korean): 국민연금공단 - Name (Chinese/English): 國民年金公團 / National Pension Service - Business Registration Number: 219-82-01593 - Address (up to dong/eup/myeon): 180 Giji-ro, Deokjin-gu, Jeonju-si, Jeonbuk Special Self-Governing Province (Manseong-dong) - Relationship to Issuing Company: - Executive (registered): N/A / Position: N/A / Appointed: N/A / Resigned: N/A - Major Shareholder (≥10%): N/A - Business Contact and Officer in Charge: - Affiliated Company: National Pension Service - Department: Securities Asset Management Division - Title: Section Chief - Phone: 063-71-****** - Name: Kim Hyeon-seo - Fax: 063-90-****** - Email: ******nps.or.kr 3. Ownership Status of Specific Securities A. Number of Specific Securities Held and Ownership Ratio | | Base Date | Specific Securities (shares) | Ratio (%) | Common Shares (shares) | Ratio (%) | |---|---|---|---|---|---| | Previous Report | June 19, 2026 | 2,419,190 | 8.72 | 2,419,190 | 8.72 | | Current Report | June 30, 2026 | 2,521,629 | 9.09 | 2,521,629 | 9.09 | | Change | | +102,439 | +0.37 | +102,439 | +0.37 | B. Breakdown by Type of Specific Securities | Common Shares | Preemptive Right Certificates | Convertible Bonds | Bonds with Warrants | Participating Bonds | Exchangeable Bonds | Depositary Receipts | Other | Total | |---|---|---|---|---|---|---|---|---| | 2,521,629 | - | - | - | - | - | - | - | 2,521,629 | | (9.09%) | | | | | | | | (9.09%) | - Total Shares Issued (J): 27,731,009 - Non-share Specific Securities: 0 - Ownership Ratio (specific securities): 9.09% - Ownership Ratio (common shares only): 9.09% ※ Exchangeable bonds where the underlying asset is shares, and depositary receipts or derivative-linked securities with shares as the underlying asset, are excluded from the denominator when calculating the ownership ratio. C. Detailed Transaction History | Reason | Transaction Date* | Security Type | Shares Before | Change | Shares After | Acquisition/Disposal Price (KRW)** | Note | Planned Trade Report Date | |---|---|---|---|---|---|---|---|---| | On-market Purchase (+) | June 22, 2026 | Common | 2,419,190 | +35,124 | 2,454,314 | 140,132 | - | - | | On-market Sale (−) | June 22, 2026 | Common | 2,454,314 | −17,563 | 2,436,751 | 140,162 | - | - | | On-market Purchase (+) | June 23, 2026 | Common | 2,436,751 | +39,668 | 2,476,419 | 121,946 | - | - | | On-market Sale (−) | June 23, 2026 | Common | 2,476,419 | −15,347 | 2,461,072 | 119,913 | - | - | | On-market Purchase (+) | June 24, 2026 | Common | 2,461,072 | +47,840 | 2,508,912 | 116,516 | - | - | | On-market Sale (−) | June 24, 2026 | Common | 2,508,912 | −12,877 | 2,496,035 | 115,948 | - | - | | On-market Purchase (+) | June 25, 2026 | Common | 2,496,035 | +2,797 | 2,498,832 | 104,743 | - | - | | On-market Sale (−) | June 25, 2026 | Common | 2,498,832 | −7,401 | 2,491,431 | 105,252 | - | - | | On-market Purchase (+) | June 26, 2026 | Common | 2,491,431 | +53,872 | 2,545,303 | 98,121 | - | - | | On-market Sale (−) | June 26, 2026 | Common | 2,545,303 | −4,257 | 2,541,046 | 97,417 | - | - | | On-market Sale (−) | June 29, 2026 | Common | 2,541,046 | −23,980 | 2,517,066 | 94,772 | - | - | | On-market Purchase (+) | June 30, 2026 | Common | 2,517,066 | +4,563 | 2,521,629 | 90,985 | - | - | | Total | | | 2,419,190 | +102,439 | 2,521,629 | - | - | - | * For exchange-traded transactions, the settlement date of the contract is recorded. ** For non-share securities, this refers to the exercise (conversion/exchange) price, or the per-share price of shares acquired/disposed through rights exercise; amounts in parentheses indicate the transaction price of the security itself.