Littelfuse Inc. (Chicago): David Heinzmann was promoted to COO from his previous role as V.P. of global operations. All of the Littelfuse business unit VPs will report directly to Heinzmann. In addition, Heinzmann will retain responsibility for the global operations of Littelfuse. He began his career at the company in 1985. Littelfuse also announced that two of its existing senior executive officers, Philip Franklin and Ryan Stafford, have been promoted to senior V.P. and CFO and senior V.P. and chief legal and human resources officer, respectively.