The 28-year-old Gostisbehere recorded 9-11-20 and six penalty minutes (PIM) in 41 games with Philadelphia in 2020-21. He also scored five power-play goals and nine power-play points this season.
"We are very pleased to acquire Shayne," said Armstrong. "He is a very good offensive defenseman and an excellent skater. He will be a solid addition to our blueline this season and will be a key power play player for us."
The 5-foot-11, 180-pound defenseman posted 17-29-46 with 22 power-play points in 64 games as a rookie in 2015-16. Gostisbehere was named as a finalist and finished second in the voting for the Calder Memorial Trophy, which is awarded to the top rookie in the NHL. He also was selected to the 2016 NHL All-Rookie Team that season.
The Pembroke, Pines, FL native recorded a career-high 13-52-65 in 78 games in 2017-18 and has totaled 60-159-219 and 129 PIM in 381 career NHL games.
Gostisbehere was originally drafted by the Flyers in the third round (78th overall) in the 2012 NHL Entry Draft.
