Crowell & Moring is building up its litigation and white-collar and regulatory enforcement groups in San Francisco with the addition of a partner from Orrick, Herrington & Sutcliffe.

Warrington Parker is Orrick's fourth white-collar partner to depart this week. On Wednesday morning, Paul, Weiss, Rifkind, Wharton & Garrison announced that Orrick's Melinda Haag, Walter Brown and Randy Luskey would be joining the firm and developing a Northern California office.