Labaton Sucharow, a leading plaintiffs-side securities litigation firm, has bulked up its U.S. Securities and Exchange Commission whistleblower practice, adding three new partners in Washington, D.C., and Chicago.

In a statement issued Tuesday, Labaton announced the arrival of former federal prosecutor Steven Durham and former SEC enforcement officials Timothy Warren and Robert Wilson. With the hires, Labaton will also open offices in Chicago—where Warren is based—and in D.C., where both Durham and Wilson will reside.