Hinostroza, who scored seven goals and dished out 18 assists in 50 games for the Blackhawks last season, agreed to a two-year pact with the team, the Blackhawks announced on Friday.
The contract will pay Hinostroza $1.5 million per season for the next two years, according to The Athletic's Scott Powers.
The Blackhawks also agreed to terms on a new two-year contract with forward John Hayden on Friday morning. Earlier in the week, defenseman Henri Jokiharju, the team's first round pick in the 2017 NHL Draft, agreed to a three-year entry level contract.
With the contracts signed, the Blackhawks have a handful of restricted free agents left to sign. Forwards Anthony Duclair and Tomas Jurco still need new contracts, as does defenseman Adam Clendening.