SADDLE RIVER, N.J.--(BUSINESS WIRE)--PDI, Inc. (NASDAQ:PDII), a provider of commercialization services to the biopharmaceutical industry, today announced that Steven K. Budd has resigned his position as president of the sales services segment, effective April 6, 2007. Mr. Budd has been with PDI since 1996. PDI is initiating a process to identify Mr. Budd’s successor and until a successor has been named, senior management of this unit will report directly to Michael Marquard, PDI’s chief executive officer.