| Date | Player | Position | Transaction |
|---|---|---|---|
| May 22 | Pedro Figueroa | RP | Sent to Minors by Oakland |
| May 22 | Graham Godfrey | SP | Called Up from Minors by Oakland |
| May 21 | Eric Sogard | 3B/SS/2B | Sent to Minors by Oakland |
| May 20 | Jim Miller | RP | Called Up from Minors by Oakland |
| May 17 | Adam Rosales | 3B/SS/1B/2B | Called Up from Minors by Oakland |
| May 16 | Andrew Carignan | RP | Sent to Minors by Oakland |
| May 15 | Travis Blackley | RP | Acquired Off Waivers from San Francisco to Oakland |
| May 15 | Joey Devine | RP | Transferred to 60-Day DL by Oakland (Right elbow surgery - out for season) |
| May 12 | Josh Donaldson | 3B/C/1B | Called Up from Minors by Oakland |
| May 11 | Jim Miller | RP | Sent to Minors by Oakland |
| May 11 | Michael Taylor | LF/RF | Sent to Minors by Oakland |
| May 11 | Collin Cowgill | LF/CF/RF | Called Up from Minors by Oakland |
| May 11 | Andrew Carignan | RP | Called Up from Minors by Oakland |
| May 4 | Michael Taylor | LF/RF | Called Up from Minors by Oakland |
| May 2 | Luke Hughes | 2B/1B/3B | Outrighted to Minors by Oakland |