Socar Amends Stock Option Grant Disclosure (Reduction in Total Granted Shares)

Reason for correction: Total stock options decreased by 106,500 shares from 1,616,000 to 1,509,500 due to a grantee's resignation
Exercise price: 17,840 won (with premium, based on arithmetic average of benchmark prices)
Exercise period: March 28, 2026 to March 28, 2029 (2 to 5 years from grant date)
Vesting conditions: Gradual exercise allowed (50% after 2 years, 100% after 3 years, etc.)
Fair value: Binomial model applied, risk-free rate 3.29%~3.34%, expected volatility 57.20%
Other: Settlement by new share issuance or cash difference; exercise price and quantity subject to adjustment