| Date | Transaction |
|---|---|
| 08/25/12 | Redal, Curran placed on disabled list (minimum 7 days) |
| 08/22/12 | Costello, Matt suspended |
| 08/15/12 | Amerson, Cory released |
| 08/08/12 | Wetzel, Erik released |
| 08/07/12 | Cunniff, Brandon traded to Southern Illinois Miners for Albert Ayala and ptbnl |
| 08/03/12 | Ayala, Albert acquired in trade from Southern Illinois Miners |
| 07/31/12 | OBrien, Blaine released |
| 07/26/12 | Kaup, Ryan traded to Road Warriors for future considerations |
| 07/26/12 | Rusch, Max traded to Road Warriors for future considerations |
| 07/25/12 | Costello, Matt acquired in trade from Windy City ThunderBolts |
| 07/25/12 | Haselden, David sold to Chicago White Sox |
| 07/21/12 | Schreiber, Nick released |
| 07/20/12 | Burk, Bobby released |
| 07/19/12 | King, Aaron released |
| 07/06/12 | Avila, Gerardo traded to outside league Wichita Wingnuts |
| 07/06/12 | Worthington, Adam released |
| 07/06/12 | Umberger, Dustin sold to Chicago White Sox |
| 06/20/12 | Hewett, Ben acquired in trade from Joliet Slammers for a player to be named later |
| 06/20/12 | Barnard, Chandler released |
| 06/20/12 | Deutscher, Zach released |
| 06/16/12 | Sunderland, Alex signed |
| 06/15/12 | Whigham, David acquired in trade from Schaumburg Boomers for a player to be named later |
| 06/12/12 | Edwards, Justin suspended |
| 06/12/12 | Lazzaroni, Dan released |
| 06/03/12 | Barnard, Chandler acquired in trade from outside league ptbnl to finish Holdren deal |
| 05/30/12 | West, Jareck traded to Windy City ThunderBolts |