FNC娛樂
On June 28, 2016 it was reported that Jung is being under investigation for insider trading. He was reportedly being investigated for allegedly earning approximately $347,000 through buying stocks in FNC Entertainment after learning about their plans to sign a major celebrity. On June 30, Jung was cleared of suspicion and was found not guilty. On October 31, FNC Entertainment announced that they would take legal action against malicious rumors about the singer after being framed of insider trading.