| DATE | PLAYER | DESCRIPTION |
| 05/22/2012 | Blake Wood | Transferred to 60-day disabled list |
|
05/22/2012 | Will Smith | Contract purchased from Omaha (AAA) |
|
05/22/2012 | Chris Getz | Placed on 15-day disabled list |
|
05/19/2012 | Nate Adcock | Recalled from Omaha (AAA) |
|
05/19/2012 | Everett Teaford | Placed on 15-day disabled list |
|
05/17/2012 | Louis Coleman | Recalled from Omaha (AAA) |
|
05/17/2012 | Everett Teaford | Recalled from Omaha (AAA) |
|
05/17/2012 | Vin Mazzaro | Optioned to Omaha (AAA) |
|
05/17/2012 | Nate Adcock | Optioned to Omaha (AAA) |
|
05/14/2012 | Danny Duffy | Placed on 15-day disabled list |
|
05/14/2012 | Nate Adcock | Recalled from Omaha (AAA) |
|
05/12/2012 | Greg Holland | Activated from 15-day disabled list |
|
05/12/2012 | Nate Adcock | Optioned to Omaha (AAA) |
|
05/09/2012 | Johnny Giavotella | Recalled from Omaha (AAA) |
|
05/09/2012 | Jonathan Sanchez | Placed on 15-day disabled list |
|
05/08/2012 | Vin Mazzaro | Recalled from Omaha (AAA) |
|
05/08/2012 | Tommy Hottovy | Optioned to Omaha (AAA) |
|
05/05/2012 | Louis Coleman | Optioned to Omaha (AAA) |
|
05/05/2012 | Felipe Paulino | Activated from 15-day disabled list |
|
05/03/2012 | Yuniesky Betancourt | Placed on 15-day disabled list |
|
05/03/2012 | Joakim Soria | Transferred to 60-day disabled list |
|
05/03/2012 | Irving Falu | Contract purchased from Omaha (AAA) |