Samsung Asset Management Raises Stake to 6.32% (Passive) — ISC

Summary

Samsung Asset Management disclosed an increased holding in ISC from 5.08% (1,077,810 shares) to 6.32% (1,340,264 shares), a net gain of 262,454 shares since the prior report dated February 9, 2026. The filing is a simplified (abbreviated) 5% report under the Financial Investment Services and Capital Markets Act, indicating the purpose is simple investment, not management influence. The shares are held primarily through customer accounts (집합투자 / discretionary mandates), and changes reflect routine market buying/selling plus ETF creation/redemption activity. As a passive institutional accumulation rather than activist positioning, the disclosure signals continued institutional confidence but carries limited direct catalyst weight.

Historical Impact

10 past Large Holding Report (5%+) · ≈ Schedule 13D/G events at ISC

Median +5d

-3.24%

Range

-16.52% to +28.13%

Positive outcomes

3/10

Filed	P₀	P₊₅	+5d
Jul 1, 2026	₩170,700	₩142,500	-16.52%
Apr 15, 2026	₩224,500	₩239,500	+6.68%

Full Translation

Report on Mass Holdings of Stocks, etc. (Abbreviated Form) (Abbreviated form: where the report under Article 147 of the Financial Investment Services and Capital Markets Act is NOT for the purpose of influencing management control, or where the reporter is a professional investor under the latter part of Paragraph 1 of the same Article) To: Financial Services Commission Date of Reporting Obligation: May 12, 2026 To: Korea Exchange Report Preparation Reference Date: June 1, 2026 Reporter: Samsung Asset Management --- SUMMARY --- Professional investor classification (special exemption): - Issuer: ISC Relationship with Issuer: Shareholder Report Category: Change Shares Held and Holding Ratio: - Previous report: 1,077,810 shares (5.08%) - This report: 1,340,264 shares (6.32%) Voting Rights: Not applicable (-/-) Reason for Report: Change reporting obligation arising from trading Purpose of Holding: Simple investment The reporter certifies that, as of the report reference date, the holdings of the reporter and special related persons have been accurately stated in accordance with applicable laws and disclosure requirements, with no material misstatement or omission. Confirmation Statement (Simple Investment Purpose): image1.jpg — "No Management Participation Purpose — Samsung" --- PART 1: REPORT OVERVIEW --- 1. Issuer Information - Company Name: ISC - Company Code: 095340 - Corporate Classification: KOSDAQ-listed company - Total Voting Shares Outstanding: 21,197,058 2. Mass Holder Information A. Reporter (1) Reporter Overview - Report Category: Change / Individual - Reporter Type: Financial Institution - Nationality: Republic of Korea - Name (Korean): Samsung Asset Management - Name (English): SAMSUNG ASSET MANAGEMENT - Address: Seocho-daero 74-gil, Seocho-gu, Seoul - Business Registration Number: 501-81-23179 - Business: Collective Investment Business, etc. - Relationship with Issuer: Shareholder - Contact: Fund Accounting Team 1, Senior Manager Park Myeong-gu, 3774-7*** (2) Reporter Details (as of end of March 2026) - Legal Form: Stock Corporation - Total Assets (AUM): KRW 1,191,074,278,004 - Total Liabilities: KRW 141,792,856,335 - Total Equity: KRW 1,049,281,421,669 - Capital Stock: KRW 93,430,000,000 - Representative: CEO Kim Woo-seok - Decision-Making Body: Investment Committee - Largest Shareholder: Samsung Life Insurance (100%) B. Special Related Persons: None (all fields marked '-') C. Collective Investment Manager (1) Overview - Name: Samsung Asset Management - Business Reg. No.: 501-81-23179 - Target Collective Investment Vehicles: Collective investment vehicles and discretionary mandates - Nationality: Republic of Korea - Address: 11 Seocho-daero 74-gil, Seocho-gu, Seoul (2) Details - Legal Form: Stock Corporation - Capital Stock: KRW 93,430,000,000 - Total AUM: KRW 465.9 trillion - Representative: CEO Kim Woo-seok - Decision-Making Body: Investment Committee - Largest Shareholder: Samsung Life Insurance (representative: Hong Won-hak), 100% 3. Shares Held and Holding Ratio - Previous Report (Feb 9, 2026): 1,077,810 shares / 5.08% - This Report (Jun 1, 2026): 1,340,264 shares / 6.32% - Change: +262,454 shares / +1.24%p - Total Voting Shares Outstanding: 21,197,058 4. Reason for Change - Method: Purchase / Sale - Reason: Simple additional acquisition / disposition --- PART 2: MASS HOLDING DETAILS --- 1. Holdings by Security Type - Reporter (Samsung Asset Management): 1,340,264 common shares (6.32%) - Special Related Persons: None - Potential shares (convertibles, warrants, etc.): None - Stock holding ratio (A/I): 6.32% 2. Proprietary Account vs. Customer Account Holdings (Financial Institutions Only) - Samsung Asset Management — Proprietary Account: - - Customer Account: 1,340,264 shares (6.32%) - Total: 1,340,264 shares (6.32%) --- PART 3: DETAILED CHANGES SINCE PRIOR REPORT --- 1. Summary of Changes - Reporter (Samsung Asset Management): +262,454 common shares (+1.24%p) - Special Related Persons: None 2. Detailed Change History (Unit: shares, KRW) - 2026.02.10 — On-market buy: +49 shares (price 170,019); balance 1,077,859 - 2026.02.10 — Other (+): +11,891 shares (ETF creation, price 163,500); balance 1,089,750 - 2026.02.10 — Other (-): -7,856 shares (ETF redemption, price 163,500); balance 1,081,894 - 2026.02.10 — On-market sell: -827 shares (price 168,954); balance 1,081,067 - 2026.02.11 — On-market buy: +32 shares (price 169,203); balance 1,081,099 - Samsung Asset Management, 5... [Translation truncated]