The Carlyle Group's three founders each collected roughly $100 million in dividends and other compensation in 2015, but the private equity firm stopped reporting returns on their investments in and alongside its funds.

David Rubenstein brought in $102.3 million in dividends, salary and other compensation, while William Conway and Daniel D'Aniello each took in $96.8 million, according to a Wednesday securities filing. Messrs Rubenstein and Conway serve as Carlyle's co-chief executives, while D'Aniello is the firm's chairman.