step-by-step During a session with her doctor, Billy Mooney, Maggie Mason...

During a session with her doctor, Billy Mooney, Maggie Mason mentioned in confidence the imminent merger of Walgreens with Rite-Aid. Mason\'s ex-husband, Gus Mason, was on the board of directors at Walgreens. Mooney communicated the information to a securities broker, Olive Green, who immediately made trades in Walgreen\'s securities for her own account and for her customers\' accounts.

• Did Mooney, Maggie Mason, Gus Mason, or Olive Green engage in illegal insider trading? Explain the potential culpability of each party. Include possible civil or criminal penalties for each party.
• Was the conduct of the parties ethical?