Jim Walden, who co-led the white-collar defense and investigations practice at Gibson Dunn & Crutcher for the last seven years, is starting a boutique with two other former prosecutors, solo practitioner Timothy Macht and Sean Haran from Nixon Peabody.

The six-attorney firm, Walden Macht & Haran, will focus on white -collar criminal defense, civil litigation and investigations. Its three associates are Brian Mogck from Gibson Dunn; Yeeta Yeger from the Brooklyn District Attorney’s office; and Devon Little from Nixon Peabody.