Trotman, 29, has skated in eight games for WBS this season where he has tallied five points (2G-3A) and a plus-3.
A 6-foot-3, 217-pound native of Carmel, Indiana, Trotman played in 13 games for Pittsburgh in 2018-19, recording an assist.
Between Pittsburgh and the Boston Bruins, Trotman has totaled 13 points (3G-10A) in 83 career NHL games and a plus-2.
At the AHL level split with the Providence Bruins, Ontario Reign, and WBS, Trotman has played in 240 games, accumulating 85 points (23G-62A).
Pittsburgh completes a home-and-home series with the New York Islanders tonight at 7:00 PM at the Barclays Center. On Friday, November 22 at 7:00 PM, the Penguins host the New Jersey Devils at PPG Paints Arena.