Jordan Thomas, who helped to craft the whistleblower program before leaving the SEC in July, said the quality of the submissions has been high. "Some relate to senior people at large financial firms and other corporations, typically hard targets for the SEC to successfully bring enforcement actions against," said Mr. Thomas, now acting on behalf of whistleblowers as a partner at law firm Labaton Sucharow LLP. He has no involvement in the BNY Mellon and State Street cases.