Third Wave Technologies has named its chief operating officer John Puisis to the additional post of president. Puisis, 43, will oversee management of the company’s operations and the firm’s transition into molecular diagnostics. He joined Third Wave in October 2001 as CFO. Additionally, David Nuti was appointed CFO, taking over the post once held by Puisis. Nuti, 44, joined Third Wave in April 2002 as corporate controller.