Denise Petski Senior Managing EditorEXCLUSIVE: After a successful West Coast/East Coast partnership over the past three years, Platform PR and Serge PR are becoming one — officially partnering under the Platform banner.Scott Boute (Serge PR CEO) will join Siri Garber (Platform PR CEO) and Angela Mach (Platform PR Vice President) to head up the West Coast office in Los Angeles, with industry veteran Darren Olcsvary remaining head of New York operations.