Chicago promoted forwards Phillip Danault and Ryan Hartman and defensemen Ville Pokka and Victor Svedberg.
Danault had 10 points in 14 games at Rockford earlier this season.
Patrick Sharp will be out awhile with a lower-body injury.
As veterans price themselves out of the pictures, some youngsters will have to step up for the Hawks.
The Blackhawks have assigned forward Phillip Danault to the AHL’s Rockford IceHogs.
The Blackhawks have signed 2011 first-round draft picks Mark McNeill and Phillip Danualt to three-year, entry-level contracts.
After being traded by the Blackhawks during last month’s NHL Draft, forward Troy Brouwer signed a two-year contract with the Capitals on Wednesday.