Rosenman, unlike Katten Muchin, did not have a two-tier partnership. In anticipation of the merger, about one-third of Rosenman’s partners were reclassified as income rather than equity partners, which equalized the firms’ profitability.

ROSENMAN & Colin has announced that it has signed a merger agreement with the Chicago law firm Katten Muchin Zavis, creating a law firm of roughly 675 lawyers to be known as KMZ Rosenman.