"We're excited to keep Tomas in the fold and are appreciative of all of his work to help get this deal done," said Wilson. "He is an extremely important piece of our team, which was magnified with his absence during much of the Stanley Cup Final. He has shown steady improvement each season and deserves a lot of credit for his commitment into what we are building here. We're looking forward to having him back to start the 2016-17 season."
Hertl, 22, posted career-highs in nearly every major statistical category last season, recording 46 points (21 goals, 25 assists), 26 penalty minutes, 202 shots on goal and a plus-16 plus/minus rating (all career highs) in 81 games with the Sharks.