Cramarossa, 26, had been playing for WBS on an AHL-only contract since midway through last season. He was originally acquired by the organization in a minor-league trade from the Stockton Heat on February 14, 2018 in exchange for Colin Smith.
The 6-foot, 192-pound Cramarossa has spent the entire season thus far with WBS, contributing nine points (2G-7A) and a team-high 85 penalty minutes in 35 games. He has served as an alternate captain for WBS. Cramarossa attended Pittsburgh's training camp this year, appearing in one NHL exhibition contest.
A Toronto, Ontario native, Cramarossa has previous NHL experience, splitting 59 games between the Anaheim Ducks and Vancouver Canucks in 2016-17. He scored four goals and 10 points with 60 penalty minutes in those appearances.
Cramarossa has appeared in 264 career AHL contests with WBS, Stockton, San Diego and Norfolk, producing 28 goals, 34 assists and 62 points. He has also notched four goals in 14 AHL playoff games.
Before turning pro, Cramarossa skated four seasons of junior hockey in the Ontario Hockey League with the Mississauga St. Michael's Majors and the Belleville Bulls. He played in the 2011 Memorial Cup with Mississauga.
Cramarossa was originally chosen by the Anaheim Ducks in the third round (65th overall) in the 2011 NHL Draft.