It's the first NHL contract for Highmore, who recently turned 21. He has attended rookie camps with the Montreal Canadiens and Florida Panthers in the past.
Highmore is currently seventh in Quebec Major Junior Hockey League scoring with 82 points in 58 games. He has already surpassed his career high in both points and goals (32). He currently leads the Sea Dogs in assists with 50.
Highmore joins Nathan Noel as Blackhawks prospects on the Sea Dogs. Meanwhile, former Dog Tomas Jurco was recently traded to Chicago from the Detroit Red Wings.
Former Sea Dogs scout Peter Nevin is currently a part of the Blackhawks organization.
The Halifax native will remain with the Sea Dogs for the rest of the season before turning professional in 2017-18.