The deal carries an average annual value of $2.1 million.
Sheahan, 26, enjoyed one of his best regular seasons after arriving to Pittsburgh on Oct. 21, 2017 in a deal that sent Scott Wilson to the Detroit Red Wings. In 73 games with the Penguins, Sheahan produced 11 goals, 21 assists and 32 points. His assist and point totals were the second-highest of his career. Sheahan also played in eight games with the Wings before the trade.
The 6-foot-3, 214-pound Sheahan played his best hockey of the season beginning in January, which coincided with the Penguins' best stretch. Between January 2 and the end of the regular season, Sheahan tallied eight goals, 13 assists and 21 points in 42 games.
Sheahan, a native of St. Catharines, Ontario, was a strong two-way presence for the Penguins, leading the club in faceoff winning percentage (54.4%) and ranking first on the team in shorthanded minutes per game (2:41). His 46 blocked shots ranked third among team forwards.
Prior to joining the Penguins, Sheahan spent four full seasons, and parts of three others, with the Red Wings. He enjoyed a career year with the Wings in 2014-15, setting personal bests with 23 assists and 36 points in 79 games.
Originally a first-round (21st overall) draft pick by Detroit in the 2010 NHL Draft, Sheahan has played in 365 career regular-season games with the Penguins and Red Wings, tallying 49 goals, 81 assists and 130 points. He has added seven points (3G-4A) in 29 career postseason appearances, including three points (1G-2A) in 12 games with the Pens in the 2018 playoffs.