Michael Russell left Goodwin Procter to rejoin Wilson Sonsini Goodrich & Rosati, where he worked for 18 years earlier in his career. He will co-lead the firm’s mergers and acquisitions practice as a partner focused on complex corporate transactions. Russell will split his time between Wilson Sonsini’s Palo Alto and San Francisco offices.

Judicate West added Thomas G. Oesterreich as a neutral in its Orange County office. He will mediate and arbitrate cases involving personal injury, business/contractual law, employment matters, lemon laws and professional negligence. Prior to the move, Oesterreich was a partner at Lewis Brisbois Bisgaard & Smith.