The Bonner Group is a fundraising consulting firm that raises money for American Bridge and Ready PAC, which we know from FEC filings, and other groups like Media Matters, which was reported by The New York Times. Bonner solicits donations for these groups, who then pay Bonner a sizable cut — in the first six months of 2015, American Bridge super PAC paid Bonner $593,007.
So we have no idea how much of American Bridge, Media Matters or Ready PAC’s money comes through Bonner Group fundraising, but we do know that Bonner makes a lot of money off it, and that David Brock thinks he’s getting “the best fund-raising product for the lowest cost.” Media Matters’ 2013 990 form reported they paid $1.4 million for fundraising services.
The New York Times report on The Bonner group notes that Brock and Mary Pat Bonner, who runs the Bonner Group, share a house in the Hamptons.
https://sunlightfoundation.com/blog/2015/12/03/behind-the-clinton-campaign-dark-money-allies/