The post under the link below discusses a new decision by the Arizona Supreme Court concerning the common law fiduciary duties of LLC managers.  While the decision is based on the Arizona LLC act, it may also be significant in other jurisdictions as well.

Here’s the link:

https://www.stinson.com/newsroom-publications-Members-and-Managers-of-Arizona-LLCs-Owe-Common-Law-Fiduciary-Duties-to-the-Company