REDWOOD CITY, Calif.--(BUSINESS WIRE)--A.P. Pharma, Inc. (Nasdaq:APPA), a specialty pharmaceutical company, today announced that beginning April 1, 2011 its common stock will be transferred from The NASDAQ Stock Market (NASDAQ) to the OTCQB, which is operated by OTC Markets, Inc. OTCQB is a market tier of OTC Markets for U.S. companies registered with and reporting to the Securities and Exchange Commission (SEC).