A trust company, its officers and employees, shall not disclose any information to any person concerning the existence, condition, management, and administration of any private trust confided to it, except:

1. (a) Where such disclosure is specifically authorized by the terms of the trust.
2. (b) Where such disclosure is determined by an officer of the trust company to be necessary in the administration of such trust.
3. (c) Where such disclosure is required by a court of competent jurisdiction or by a subpoena issued by an attorney pursuant to Section 1985 of the Code of Civil Procedure.
4. (d) Where such disclosure is made to, or upon the instructions of, any party executing the trust instrument.
5. (e) Where such disclosure refers to an irrevocable trust, to, or upon the instructions of, any beneficiary thereunder whether or not presently entitled to receive benefits therefrom.
6. (f) Where such disclosure is made to the commissioner in the course of an examination.