N.J. Admin. Code § 13:46-23.6
No person, partnership, firm, corporation or association licensed by the Office of the State Athletic Commissioner to hold or conduct boxing bouts, wrestling exhibitions or sparring exhibitions pursuant to 13:46-4.1, nor any person or entity holding an interest in said licensee of the nature described in 13:46-23.2, nor the spouse, child, parent or sibling of any such individual, shall have any direct or indirect financial interest in any boxer or wrestler competing on premises owned or leased by said person or entity unless said interest is disclosed in writing and sent by regular or certified mail or hand delivered to the Office of the State Athletic Commissioner, Richard J. Hughes Justice Complex, Trenton, New Jersey, at least 10 days prior to the authorized event.
N.J. Admin. Code § 13:46-23.6