Brian Lamb (Tracy A. Woodward/THE WASHINGTON POST)

Brian Lamb, who has served as CEO of the Washington-based public affairs cable channel since it was founded in 1978, will step down to become the new executive chairman of the C-SPAN board.Taking his place will be both Rob Kennedy and Susan Swain, longtime C-SPAN staffers and current co-presidents, who will become co-CEOs.

Though Kennedy and Swain will be in charge of day-to-day operations, Lamb will still have a role in the C-SPAN’s overall direction, according to the network’s announcement, and he will continue to host his weekly show “Q and A.”

All changes are effective April 1.