Verastem Inc. (VSTM), operating under the name Verastem Oncology, revealed on Wednesday that Matthew Ros has been appointed as the new Chief Operating Officer. Ros previously held the positions of Chief Executive Officer and Board Director at FORE Biotherapeutics, a company specializing in oncology. In pre-market trading, shares of Verastem are rising by 4.13%, reaching $5.25 on the Nasdaq.