Van Riemsdyk, who thrived in last season's NHL playoffs, was set to become a free agent after the coming season but the Flyers locked in the 22-year-old with a contract worth $25.5 million, according to local media.
"We still have some great players and we also brought in some great players," Van Riemsdyk told NHL.com. "We have a good leadership core in the locker room but, saying that, there was a little bit of a turnover from last year's team to this year's."
Van Riemsdyk recorded 21 goals and 19 assists last year during his second season in the league, then caught fire in the post-season where he scored seven times in 11 games.
The Flyers are hoping his development can help the franchise end a Stanley Cup drought dating back to 1975.
(Writing by Jahmal Corner in Los Angeles; Editing by Ian Ransom)