Lindberg was traded to Toronto as part of the February 2016 trade that sent defenceman Dion Phaneuf to the Senators. He appeared in six games with the Maple Leafs in 2015-16, contributing two assists.
Erkamps, a 23-year-old defenceman from Delta, B.C., has a goal and five assists in 21 games with the ECHL’s Brampton Beast this season.
Sexton, 27, has nine points in 17 games with Belleville this campaign. The Ottawa native appeared in two games with the NHL Senators last season.
Belleville announced the completion of a transaction with Wilkes-Barre/Scranton, which has seen the Penguins acquire forward Ryan Scarfo from Belleville in exchange for future considerations.