Complex sentence: On February 2014, K-Plus has signed a contract for strategic partnership and share investment with talent agency YG Entertainment and finalized the merger with a new name called "YG KPLUS" in September 2014.
Split into simpler sentences: On February 2014, K-Plus has signed a contract for strategic partnership and share investment with talent agency YG Entertainment. They finalized the merger with a new name called "YG KPLUS" in September 2014.