CAMBRIDGE, Mass.--(BUSINESS WIRE)--Helicos BioSciences Corporation (NASDAQ: HLCS) announced today that Louise Mawhinney, the company’s Senior Vice President and Chief Financial Officer, will be leaving the company to pursue other interests. Ms. Mawhinney has agreed to continue in her position through March 19, 2008 at which time her resignation will become effective. Steve Lombardi, the company’s President and Chief Operating Officer, will become the company’s interim principal financial officer and Kevin Lafond, the company’s controller, will become the company’s interim principal accounting officer as of her departure. Mr. Lafond joined the company in 2007 as the company’s controller. Prior to joining the company, he served as company controller at Pegasystems Inc.