| Last updated: Fri, May 24, 2013, 19:06 EDT |
| Date | Player | Pos. | Transaction |
| 5/21 | Adam Eaton | CF | Recalled From Minors, Rehab Assignment |
| 5/20 | Mark Teahen | 3B | Released |
| 5/8 | Will Harris | P | Called Up from Minors |
| 5/8 | J.J. Putz | P | Placed on 15-Day DL, (Strained right elbow) |
| 5/4 | Alfredo Marte | LF | Sent to Minors |
| 5/4 | Didi Gregorius | SS | Removed from 7-Day DL, (Mild concussion) |
| 5/3 | Adam Eaton | CF | Sent to Minors, For Rehabilitation |
| 4/30 | Juan Rivera | LF | Signed to a Minor League Contract |
| 4/28 | Jason Kubel | RF | Removed From 15-Day DL, (Strained left quad) |
| 4/28 | Didi Gregorius | SS | Placed on 7-Day DL, (Mild concussion) |
| 4/16 | Aaron Hill | 2B | Placed on 15-Day DL, (Broken left hand) |
| 4/16 | Didi Gregorius | SS | Recalled From Minors, Rehab Assignment |
| 4/16 | Didi Gregorius | SS | Removed From 15-Day DL, (Right elbow strain) |
| 4/13 | Jason Kubel | RF | Placed on 15-Day DL, (Strained left quad) |
| 4/13 | Cody Ross | RF | Recalled From Minors, Rehab Assignment |
| 4/13 | Cody Ross | RF | Removed From 15-Day DL, (Left calf strain) |
| 4/8 | Didi Gregorius | SS | Sent to Minors, For Rehabilitation |
| 4/6 | Will Harris | P | Acquired Off Waivers From, Oakland |
| 4/6 | Will Harris | P | Sent to Minors |
| 4/4 | Cody Ross | RF | Sent to Minors, For Rehabilitation |
| 3/31 | Josh Wilson | 2B | Purchased From Minors |
| 3/31 | Cody Ross | RF | Placed on 15-Day DL, (Left calf strain) |
| 3/31 | Alfredo Marte | RF | Called Up from Minors |
| 3/31 | Didi Gregorius | SS | Placed on 15-Day DL, (Right elbow strain) |
| 3/31 | Adam Eaton | CF | Placed on 15-Day DL, (Left elbow strain) |
| 3/31 | Randall Delgado | P | Sent to Minors |
| 3/31 | Willie Bloomquist | SS | Placed on 15-Day DL, (Strained right intercostal) |
| 3/30 | Tony Campana | CF | Sent to Minors |
| 3/30 | Joe Paterson | P | Sent to Minors |
| 3/30 | Paul Goldschmidt | 1B | Signed, ( 2013-2018; Opt 2019)(five-year extension) |
| 3/30 | Nick Evans | 1B | Signed to a Minor League Contract |
| 3/25 | Rod Barajas | C | Released |
| 3/18 | Tyler Skaggs | P | Sent to Minors |
| 3/15 | Dan Cortes | P | Signed to a Minor League Contract |
| 2/18 | Daniel Hudson | P | Placed on 60-Day DL, (Recovery from right elbow surgery) |
| 2/18 | Tony Campana | CF | Traded From, Chi. Cubs (for RHPs Erick Leal & Jesus Castillo) |
| 2/8 | Aaron Hill | 2B | Signed, ( 2014-2016)(three-year extension) |
| 2/8 | Rod Barajas | C | Signed to a Minor League Contract |
| 2/5 | Gerardo Parra | CF | Signed, ( 2013)(avoids arbitration) |
| 1/31 | Martin Prado | LF | Signed, ( 2013-2016)(four-year contract) |
| 1/24 | Lars Anderson | 1B | Designated for Assignment |
| 1/24 | Randall Delgado | P | Traded From, Atlanta (for OF Justin Upton, seven-player deal) |
| 1/24 | Martin Prado | LF | Traded From, Atlanta (for OF Justin Upton, seven-player deal) |
| 1/22 | Cliff Pennington | SS | Signed, ( 2013-2014)(two-year contract, avoids arbitration) |
| 1/18 | Brad Ziegler | P | Signed, ( 2013)(avoids arbitration) |
| 1/18 | Ian Kennedy | P | Signed, ( 2013)(avoids arbitration) |
| 1/18 | Chris Johnson | 3B | Signed, ( 2013)(avoids arbitration) |
| 1/17 | Tony Sipp | P | Signed, ( 2013)(avoids arbitration) |
| 1/14 | J.J. Putz | P | Signed, ( 2014)(one-year extension) |
| 1/12 | Geoff Blum | 3B | Retired |
| 12/28 | Takashi Saito | P | Signed to Play in Japan, (Tohoku Rakuten Golden Eagles) |
| 12/22 | Cody Ross | RF | Signed as Free Agent, ( 2013-2015; Opt 2016)(three-year contract) |
| 12/21 | Gustavo Nunez | SS | Drafted Player Returned to Minors |
| 12/21 | Warner Madrigal | P | Signed to a Minor League Contract |
| 12/21 | Nelson Figueroa | P | Signed to a Minor League Contract |
| 12/16 | Steve Garrison | P | Signed to a Minor League Contract |
| 12/16 | Josh Wilson | 2B | Signed to a Minor League Contract |
| 12/11 | Lars Anderson | 1B | Traded From, Cleveland (Three-team trade) |
| 12/11 | Didi Gregorius | SS | Traded From, Cincinnati (Three-team trade) |
| 12/11 | Tony Sipp | P | Traded From, Cleveland (Three-team trade) |
| 12/11 | Brandon McCarthy | P | Signed as Free Agent, ( 2013-2014)(two-year contract) |
| 12/10 | Eric Chavez | 3B | Signed as Free Agent, ( 2013)(one-year contract) |
| 12/7 | Eric Hinske | 1B | Signed as Free Agent, ( 2013)(one-year contract) |
| 12/5 | Eric Chavez | 3B | Signed as Free Agent, ( 2013)(one-year contract) |
| 12/5 | Wil Nieves | C | Signed as Free Agent, ( 2013)(one-year contract) |
| 12/4 | Eric Hinske | 1B | Signed as Free Agent, ( 2013)(one-year contract) |
| 12/3 | Humberto Cota | C | Signed to a Minor League Contract |
| 11/30 | Brad Bergesen | P | Cleared Waivers and Became a Free Agent |
| 11/30 | Brad Bergesen | P | Signed to Play in Japan, (contract sold to Chunichi Dragons) |
| 11/30 | Wil Nieves | C | Not Offered Contract and Became Free Agent, (non-tendered) |
| 11/28 | Brad Bergesen | P | Released |
| 11/26 | Mark Teahen | 3B | Signed to a Minor League Contract |
| More Transactions |
