Chang-Woo Yoo

Cosmo Turnaround Ltd. operates as a special purpose company. It engages in the investment and management of firms. The company is headquartered in Seoul, South Korea.

Keistone Partners Co. Ltd.(Keistone Partners) is a private equity firm founded in 2007 by Hyun-Kap Yoo. The firm is headquartered in South Korea.

Korea Teachers' Credit Union (KTCU) is the Korean government-sponsored pension fund management institution which was founded in 1971 to promote stability in the lives of all teachers in the nation with enhanced welfare and benefits. Headquartered in Seoul, KTCU offers a variety of financial products, which includes long-term savings benefit products, retirement savings benefit products, low interest loans for living expenses, interest-free loans (for health and medical care or to rebuild a house after a disaster) and teacher welfare loans. The firm also runs recreational facilities such as hotels and condominiums and offers various services to promote a stable life after retirement for members.