B1A4 is a South Korean group under WM Entertainment. Formed by CNU, Jinyoung, Baro, Sandeul and Gongchan in 2011, they debuted with "O.K" from their first mini-album Let's Fly. On June 30, 2018, WM Entertainment confirmed that Jinyoung and Baro had left the agency following the end of their contracts. On November 16, it was announced that they will not promote with the group for the time being, though their activities with the group remain in discussion. In December 2025, B1A4 depart WM Entertainment after 14 years with the agency. It was also announced that the group established their own company, called B1A4 Company, with the members registered as its executive directors. <a href="https://www.last.fm/music/B1A4">Read more on Last.fm</a>. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.