Never Trump is a project of and paid for by Never Means Never PAC. Not authorized by any candidate or candidate’s committee. NeverTrump.com
http://www.fec.gov/fecviewer/CandidateCommitteeDetail.do?candidateCommitteeId=C00610907&tabIndex=3
Dig through here and see what you can find.
Two large funders in this instance seem to be Pierre Omidyar, billionaire founder of Ebay. He has donated to Pelosi, Reid, and Feinstein. Associated with Glenn Greenwald, the Snowden confidante. Produced a movie pushing the Global Warming agenda. Rarely gives to republicans, but donated to G.W. Bush.
Another large funder is Keith Rabois, formerly of Paypal, who apparently
resigned from another company due to same-sex sexual harassment allegations. Rabois claimed the sexual relationship was consensual.
http://www.huffingtonpost.com/2013/01/26/keith-rabois-square-resigns_n_2559017.html
See also “These Are the People Putting Up Money to Stop Donalt Trump”
http://www.huffingtonpost.com/entry/nevertrump-pac-donations_us_571fc5e2e4b0f309baeef7c2