Kramer (undisclosed) was activated from injured reserve Saturday.
Kramer (undisclosed) was designated to return from injured reserve Monday, Kevin Fishbain of The Athletic reports.
The Bears placed Kramer (undisclosed) on injured reserve Thursday, Larry Mayer and Kevin Myers of the team's official site report.
Kramer was removed from Saturday's preseason contest against the Bills after suffering an undisclosed injury, according to Adam Hoge of AllCHGO.com.
Kramer (lower leg), who spent all of last year on IR, is back at Chicago's OTAs, Alyssa Barbieri of USA Today reports.