Samsung Asset Management Reduces Stake Below 6% Threshold — Wonik IPS

Summary

Samsung Asset Management filed an abbreviated large-shareholding report disclosing that its stake fell from 7.16% to 5.92% as of June 1, 2026, a decrease of 610,707 shares (-1.24 percentage points). The reduction was driven by simple buying and selling activity during March 2026, including on-market sales and ETF-related adjustments, with the holdings classified as simple investment (no management influence intent). The reported figure includes 1,581 shares delegated to Samsung Active Asset Management. With the stake now near the 5% disclosure threshold, further selling could trigger an exit from mandatory reporting, signaling continued institutional outflow.

Historical Impact

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

Median +5d

+5.54%

Range

-37.14% to +27.39%

Positive outcomes

8/10

Filed	P₀	P₊₅	+5d
Jul 1, 2026	₩165,600	₩104,100	-37.14%
May 15, 2026	₩114,700	₩124,000

Full Translation

Report on Large-Volume Holdings of Stocks, etc. (Abbreviated Form) Version 6.0 Issuer: Wonik IPS Filing Date: 2026-05-12 Report on Large-Volume Holdings of Stocks, etc. (Abbreviated form: Applicable when reporting under Article 147 of the Financial Investment Services and Capital Markets Act for cases NOT aimed at influencing management control, or when the filer is a professional investor under Article 147(1) latter clause) To: Financial Services Commission Reporting Obligation Date: May 12, 2026 To: Korea Exchange Report Preparation Reference Date: June 1, 2026 Filer: Samsung Asset Management — SUMMARY — Special Professional Investor Classification: - Issuer Name: Wonik IPS Relationship to Issuer: Shareholder Report Type: Change Number and Ratio of Holdings: - Previous report: 3,514,941 shares (7.16%) - Current report: 2,904,234 shares (5.92%) Voting Rights: - Previous: - / Current: - Reason for Report: Change reporting obligation triggered by trading (including portion delegated to Samsung Active Asset Management for management) Holding Purpose: Simple Investment The filer confirms that the holdings status of itself and special-related parties as of the report reference date has been prepared accurately in accordance with relevant laws and preparation instructions, with no material misstatements or omissions. Confirmation Statement (Simple Investment Purpose) No Management Participation Purpose — Samsung === PART 1: REPORT OVERVIEW === 1. Issuer Information - Company Name: Wonik IPS - Company Code: 240810 - Legal Classification: KOSDAQ-listed corporation - Total Voting Shares Outstanding: 49,083,901 shares 2. Large-Volume Holder Information A. Filer (1) Filer Overview - Report Type: Change / Individual - Filer Classification: Financial institution - Nationality: Republic of Korea - Name (Korean): Samsung Asset Management (삼성자산운용) - Name (English): SAMSUNG ASSET MANAGEMENT - Address: Seocho-daero 74-gil, Seocho-gu, Seoul - Business Registration No.: 501-81-23179 - Business: Collective Investment Business, etc. - Relationship to Issuer: Shareholder - Contact: Fund Accounting Team 1, Senior Manager Park Myeong-gu (2) Filer Specifics (as of end of March 2026) - Legal Nature: Stock Corporation - Total Assets (or 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 - Largest Shareholder Stake: 100% B. Special-Related Parties None reported. C. Collective Investment Manager (1) Overview - Name: Samsung Asset Management - Business Registration No.: 501-81-23179 - Target Funds: Collective investment vehicles and discretionary mandates - Nationality: Republic of Korea - Address: 11 Seocho-daero 74-gil, Seocho-gu, Seoul (2) Specifics - Legal Nature: 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 (Hong Won-hak) - Largest Shareholder Stake: 100% 3. Number and Ratio of Holdings - Previous Report (2026-03-03): Samsung Asset Management held 3,514,941 shares (7.16%) - Current Report (2026-06-01): Samsung Asset Management holds 2,904,234 shares (5.92%) - Change: -610,707 shares (-1.24 percentage points) - Total Voting Shares Outstanding: 49,083,901 4. Reason for Change - Method of Change: Purchase / Sale - Reason for Change: Simple additional acquisition / disposal === PART 2: LARGE-VOLUME HOLDING DETAILS === 1. Holdings by Type of Stock - Filer Samsung Asset Management: 2,904,234 common shares (5.92%) - Special-Related Parties: None - Total Voting Shares Outstanding (I): 49,083,901 - Holding Ratio of Stocks etc.: 5.92% - Holding Ratio of Common Shares: 5.92% * Filer's holdings include 1,581 shares (0.00%) delegated to Samsung Active Asset Management for management. 2. Holdings by Proprietary Account vs. Client Account (Financial Institutions Only) - Samsung Asset Management (Self): Proprietary 0 / Client 2,904,234 shares (5.92%) / Total 2,904,234 shares (5.92%) === PART 3: LARGE-VOLUME CHANGES SINCE PREVIOUS REPORT === 1. Summary Table of Changes - Filer Samsung Asset Management: Change of -610,707 shares (-1.24%) - Special-Related Parties: None 2. Detailed Changes (in shares, KRW) 2026-03-04 — On-Market Purchase (+): 3,514,941 → +12 → 3,514,953 @ KRW 107,500 2026-03-04 — Other (+): 3,514,953 → +65,587 → 3,580,540 @ KRW 125,600 — ETF Creation Other (+) 2026-03-04 — Other (-): 3,580,540 → -37,500 → 3,543,040 @ KRW 123,500 — General Fund OTC ETF Creation Other (-) 2026-03-04 — On-Market Sale (-): 3,543,040 → -19,461 → 3,523,579 @ KRW 109,518 — On-Market Sale (-) [Translation truncated]