BMO Harris Bank’s Sponsor Finance group, a provider of middle-market leveraged finance solutions, announced it was joint lead arranger, joint bookrunner and administrative agent for $240 million in senior credit facilities to support Madison Dearborn Partners’ equity investment in Aderant Holdings.

Existing investors Vista Equity Partners and the Aderant management team, led by CEO Chris Giglio, will retain significant ownership positions.

Aderant is an independent legal software company providing comprehensive business management software for law and professional services firms of all sizes worldwide.