Blackhawks acquire defenseman Olli Maatta from the Penguins for Dominik Kahun

The Blackhawks added to their blue line Saturday, acquiring Finnish defenseman Olli Maatta from the Penguins for promising forward Dominik Kahun and a fifth-round pick in next week’s draft.

Maatta, 24, won two Stanley Cups in six seasons with the Penguins while scoring 107 points (25 goals, 82 assists) in 362 games. He’s signed through the 2021-22 season and carries a cap hit of $4.083 million.

Maatta isn’t flashy but gives the Hawks a dependable defenseman as they seek to rebound after allowing 292 goals last season, the second-most in the league. He was third on the Penguins with 116 blocked shots last season despite playing in only 60 games. He missed 21 games with a separated shoulder before returning for the final five games.

Kahun, 23, tallied 13 goals and 24 assists in his first season with the Hawks after signing as a free agent last summer.

The addition of Maatta, a left-handed shot, gives the Hawks five defensemen — Duncan Keith, Brent Seabrook, Connor Murphy and Erik Gustafsson are the others — who at this moment are likely be in the starting lineup on opening night against the Flyers in Prague.

Other blue-liners under contract include Henri Jokiharju, Slater Koekkoek and Carl Dahlstrom. Gustav Forsling is a restricted free agent and might not be re-signed.

The Hawks may not be done moving around their defensive pieces. Keith and Seabrook have no-movement clauses and aren’t likely to waive them. Gustafsson, who had a breakout season with 60 points, is entering the final year of his contract. Murphy, who does not have a no-movement clause, has three years remaining on his deal with a cap hit of $3.85 million.

Kahun had a promising rookie year, but the signing of Czech forward Dominik Kubalik, whose rights were obtained earlier this year in a trade with the Kings, made him expendable. The Hawks also have money to spend on the free-agent market next month and will look to add some forward depth.

jgreenfield@chicagotribune.com

Twitter @jcgreenx

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