Hartman had 10 goals and 10 assists in 64 games with the Nashville Predators this season before being traded to Philadelphia on Feb. 25; the 24-year-old forward had six points (two goals, four assists) in 19 games for the Flyers.
Selected by the Chicago Blackhawks in the first round (No. 30) of the 2013 NHL Draft, Hartman, who has 89 points (42 goals, 47 assists) in 245 NHL games with the Blackhawks, Predators and Flyers, can become a restricted free agent July 1.
RELATED: [2019-20 NHL Trade Tracker]
Pitlick had eight goals and four assists in 47 games with the Stars this season. The 27-year-old forward has 53 points (33 goals, 20 assists) in 185 NHL games with the Edmonton Oilers and Stars. He was a second-round pick (No. 31) by the Oilers in 2010.
Pitlick has one season remaining on a three-year, $3 million contract and can become an unrestricted free agent July 1, 2020.
