Cal. Bus. & Prof. Code § 18897.3

If an athlete agent or athlete agent’s representative or employee provides financial services to a professional athlete or student athlete or advises the athlete concerning investment of funds, the athlete agent shall disclose to the athlete any ownership interest the athlete agent, representative or employee has in any entity regarding which the athlete agent, representative or employee is providing financial services or giving advice, and any commission the athlete agent, representative or employee will receive from the athlete’s investment.