[S]ome tippees must assume an insider's duty to the shareholders . . . because it has been made available to them improperly. And, for Rule 10b-5 purposes, the insider's disclosure is improper only where it would violate his Cady, Roberts duty. Thus, a tippee assumes a fiduciary duty to the shareholders of a corporation not to trade on material nonpublic information only when the insider has breached his fiduciary duty to the shareholders by disclosing the information to the tippee and the tippee knows or should know that there has been a breach.
When one of the constituents of an organizational client communicates with the organization's lawyer in that person's organizational capacity, the communication is protected by Rule 1.6. . . . This does not mean, however, that constituents of an organizational client are the clients of the lawyer. The lawyer may not disclose to such constituents information relating to the representation except for disclosures explicitly or impliedly authorized by the organizational client in order to carry out the representation or as otherwise permitted by Rule 1.6.