John Clendening has stepped down from his roles as president, CEO and board member of Irving, Texas-based Blucora Inc.

The departure stems from a difference in opinions over the scope of Clendening's authority as CEO, according to a news release.

Blucora expects to announce a new CEO by the end of January. The company also expects to complete the selection of a new CFO once a new CEO is in place, Blucora Chairman Georganne Proctor said in the news release.

The company established an interim office of the CEO comprising executive leadership team members Enrique Vasquez, Curtis Campbell, Todd Mackay and Ann Bruder.