After the group disbanded, he founded and became the executive producer and chairman of YG Entertainment, the fourth-largest record company in South Korea.

[citation needed] The group received criticism for some of their albums, most notably for the song, "Shidaeyugam" (Korean: 시대유감, "Regret of the Times"), to which fan backlash led to the abolition of the Pre-censorship law in 1996.

[citation needed] Yang Hyun-Suk has produced hugely successful artists through his company, most notably Jinusean, 1TYM, Wheesung, Gummy, Seven, Big Bang, 2NE1, Winner, iKon, Tablo, Epik High, Lee Hi, Blackpink, Treasure, BabyMonster, and Psy.

On November 8, 2023, his aquittal for threatening the informant was overturned by the Seoul High Court, finding that he had abused his status at the company to coerce trainees into reversing police testimonies.

[7] In December 2023, Yang discussed his "deep involvement in every aspect of BABYMONSTER's production", and how the youth of the members resonated with him because he had a similarly-aged daughter.