ST. PETERSBURG — PSCU has a new CEO.The St. Petersburg-based organization, which provides financial services to credit unions, announced Friday that former executive Chuck Fagan will take the reins April 27. The new CEO spent 16 years with PSCU before departing for the international Credit Union Executive Society, where he served as president.The announcement comes about a month after PSCU's previous CEO, Mike Kelly, was abruptly ousted. "Mike Kelly's employment at PSCU was ended effective immediately," a company statement said then. The credit union group released no further details. After Fagan's return, acting CEO Tom Gandre will resume his role as executive vice president and chief operating officer.