SINGAPORE--(BUSINESS WIRE)--Flashlight Capital Partners Pte. Ltd. ("Flashlight Capitalâ€), a shareholder of S-1 Corporation (KRX: 012750) ("S-1†or the "Companyâ€), today released a letter to the Board of Directors and fellow shareholders outlining a five-point plan to improve corporate governance and unlock shareholder value at Korea's largest security services company. According to Flashlight Capital, S-1 trades at approximately 3.3x EV/EBITDA, compared to 12.0x for SK Shieldus, Korea's second-. ...