Phil Appenzeller, chief executive officer of Munsch Hardt Kopf & Harr since 2014, will step down and return to his litigation practice after shareholders select a new CEO amid a number of senior management changes.

Houston shareholder Michael Harvey has succeeded firm co-founder Steve Harr as the firm’s general counsel, who will serve as assistant general counsel during a transition until the end of the year. Dallas shareholder Dennis Roossien also was elected interim chief operating officer to serve during the transition period.