Celestica Inc., the $8.5 billion Toronto-based provider of innovative electronics manufacturing services, based in Toronto, has named Paul Nicoletti interim CFO. Nicoletti, 39, the senior vice president of finance, replaces Anthony Puppi, who retired in April. The company is conducting a search for a permanent replacement.

Aspen Insurance Holdings Ltd. appointed Richard Houghton CFO of the $1.9 billion insurer, which has headquarters in Hamilton, Bermuda. Houghton, 41, succeeds Julian Cusack, who has been named CEO and chairman of an Aspen Insurance Holdings Ltd. subsidiary. Houghton is making the transition from Royal Bank of Scotland where he served as CFO. Prior to that he was group finance director at RBS Insurance

La-Z-Boy Inc., the $1.9 billion residential furniture producer, with headquarters in Monroe, Mich., has announced that Mark Stegman, the company's corporate vice president and treasurer, has resigned after accepting a financial position with Brown- Forman Corp. A search for a new treasurer has begun. Until a replacement is chosen, the company has a treasury team that will take over Stegman's duties.