Bruck, Levin, Unger and Ferguson are "adjusting well" four years after their last conversion therapy treatments, according to Wolfe. "They have had time to get on with their lives," he said.
Their lawsuit should put all conversion therapists on notice that they can be held accountable, Wolfe said.
The SPLC has identified 70 conversion therapy providers across the United States. A California law signed by Gov. Jerry Brown last month made it illegal for licensed counselors to use the therapy with clients under 18.
"We really want to bring this lawsuit to bring attention to this practice that takes place in many parts of the country, preying on vulnerable young people," Wolfe said.