 SUNNYVALE, Calif.--BUSINESS WIRE--Ooma, Inc. NYSE: OOMA, a smart communications platform for businesses and consumers, today announced the appointment of Shig Hamamatsu as Vice President, Chief Financial Officer and Treasurer, effective September 7, 2021. Hamamatsu most recently served as CFO of Accuray, a publicly traded provider of medical devices, where he made significant contributions to improving capital structure and profitability as well as executing business joint ventures to drive 