(Pablo Martinez Monsivais/Associated Press)

Susie Tompkins Buell, a San Francisco philanthropist and co-founder of the Esprit clothing line, and Steve and Amber Mostyn, Houston trial lawyers who helped bankroll a pro-Obama super PAC last year, are leading the fundraising efforts Ready for Hillary.

The pro-Clinton super PAC launched its National Finance Council on Tuesday and named Buell and the Mostyns founding members. Ready for Hillary, begun earlier this year by Clinton supporters, is urging the former secretary of state and first lady to run for president in 2016, and is trying to assemble a grassroots coalition on her behalf.