Outside Director Reports New Ownership via Stock Option Exercise (1,000 shares)

Report on Ownership of Specified Securities by Executives and Major Shareholders 6.1 Park Systems Corporation 2026-04-30 Report on Ownership of Specified Securities by Executives and Major Shareholders To: Securities and Futures Commission To: Korea Exchange Date reporting obligation arose: April 30, 2026 Report preparation reference date: May 11, 2026 * The reporter hereby confirms that, as of the report preparation reference date, the ownership status of the reporter's specified securities has been accurately prepared in accordance with relevant laws and reporting precautions, and that there are no false statements or omissions regarding material matters. Reporter: Park Ki-jun 1. Information on the Issuing Company - Company name: Park Systems Corporation - Corporate classification: KOSDAQ-listed corporation - Company code: 140860 - Total shares issued: 6,997,557 2. Information on the Reporter - Report type: New - Reporter classification: Individual (domestic) - Name (Korean): Park Ki-jun - Name (Hanja/English): 朴基俊 - Date of birth or business registration number: 650301 - Address (to eup/myeon/dong level): Gaepo-dong, Gangnam-gu, Seoul - Relationship to issuer: Executive (registered) - Position: Outside Director - Appointment date: March 28, 2024 - Term end date: March 27, 2027 - Major shareholder: - Business contact / person in charge: - Affiliated company: Park Systems Corp. - Department: Finance Department - Position: Assistant Manager - Phone: 02-2******* - Name: Hong Mun-pyo - Fax: 02-2******* - Email: ******parksystems.com 3. Ownership of Specified Securities A. Number and ratio of specified securities owned - Previous report: - / - / - / - - This report (May 11, 2026): 1,000 specified securities (0.01%); 1,000 shares (0.01%) - Change: +1,000 specified securities (0.01%); +1,000 shares (0.01%) B. Ownership by type of specified securities - Common shares (A): 1,000 - Warrants (B): - - Convertible bonds (C): - - Bonds with warrants (D): - - Profit-participating bonds (E): - - Exchangeable bonds (F): - - Depositary receipts (G): - - Other (H): - - Total (I): 1,000 (0.01%) Total shares issued (J): 6,997,557 Number of non-stock specified securities (B+C+D+E+F+G+H=I): - Ownership ratio: 0.01% Specified securities ownership ratio [(A+I) / (J+I-(F+G+H))] × 100 Common share ownership ratio (A / J) × 100: 0.01% * For exchangeable bonds whose exchange target is stock, and for depositary receipts and derivative-linked securities whose underlying asset is stock, the underlying is excluded from the denominator when calculating the ownership ratio. C. Detailed change history - Reason for change: Stock option (+) - Change date: April 30, 2026 - Type of specified securities: Common shares - Shares owned before change: - - Change: 1,000 - Shares owned after change: 1,000 - Acquisition/disposition unit price (KRW): 163,040 - Note: Exercise of stock option *** - Transaction plan report date: - - Total: - / 1,000 / 1,000 / 163,040 * For trades on the securities market, the contract settlement date applies. ** For non-stock securities, this refers to the exercise (conversion/exchange) price of the relevant security, or the trading unit price of the shares acquired/disposed through exercise of rights attached to the security; amounts in parentheses indicate the trading unit price of the relevant security. *** The stock option has currently only had share payment completed, with listing procedures still in progress.