Tim LeRoux and Darius Saib have joined the UBS collateralized loan obligation group. LeRoux joined as a director in CLO banking and structuring, and Saib as an associate director and CLO structurer, said Jim Stehli, global head of CDOs. The recruits report to Fred Engel in Stamford, Conn., and bring the global CDO group's headcount to 45. LeRoux and Saib both jumped from New York-based StoneCastle Partners, where they reported to Joshua Siegel, managing principal.