The Sharks' roster reconstruction continued Tuesday.
"Dalton is a very smart defenseman who has shown he can move the puck cleanly under pressure and keep his turnover rates low," Sharks general manager Doug Wilson said. "We believe his ability to hold the defensive zone blue line is underrated and that he is one of the best at limiting net-front rebounds by effectively using his size and stick. We're excited to add his responsible defensive play to our blue line."
Prout, 29, played in 20 games last season for the Calgary Flames. He scored two points on the year -- one goal and one assist. Prout's plus-minus of 1 was in the positive for the first time since the 2012-13 season.
Since being selected by the Blue Jackets in the sixth round of the 2010 NHL Draft, the defenseman has played for three different franchises: Columbus, New Jersey and Calgary.
Over his eight-year career, Prout has scored 33 points -- six goals and 27 assists.