Martin Reidy, CEO and president of interactive agency R/GA, is leaving the company to take the post of president at Digitas West in San Francisco. R/GA chairman and chief creative officer Bob Greenberg will assume the title of CEO. ... Charlex creative director Colin McGreal is expanding his role as a commercials director at the company. In addition to helming CG work, he will now be available to direct live action projects via Charlex. ... Swedish director Filip Nilsson has signed with L.A. production company Protean Image Group/P.I.G. for repesentation in the U.S. and Asia. ... AlyssA Greening, Gretchen Nielsen, Jason Inskeep and Teri Bennett, all formerly of Minneapolis marketing and design boutique Mco, have launched Adsoka, Inc., a new agency based in Minneapolis. ... Laura Walker, formerly of the Protocol Marketing Group in Virginia Beach, Va., has joined Virginia Beach agency BCF&M as production manager. ... Sean Sullivan of Chicago's Sullivan Creative Management has been named midwest rep for the commercials and video division of L.A. effects company The Orphanage.