Colorado Rockies
| Date | Transaction |
| 06/27/2012 | Zach Putnam Sent to Minors |
| 06/27/2012 | Edwar Cabrera Called Up from Minors |
| 06/25/2012 | Alex White Sent to Minors |
| 06/25/2012 | Zach Putnam Called Up from Minors |
| 06/22/2012 | Jonathan Herrera Recalled From Minors Rehab |
| 06/22/2012 | DJ LeMahieu Sent to Minors |
| 06/21/2012 | Hector Gomez Sent to Minors for Rehabilitation |
| 06/19/2012 | Jason Bergmann Signed to a Minor League Contract |
| 06/14/2012 | Troy Tulowitzki Recalled From Minors Rehab |
| 06/13/2012 | Troy Tulowitzki Sent to Minors for Rehabilitation |
| 06/12/2012 | Omir Santos Signed to a Minor League Contract |
| 06/12/2012 | Esmil Rogers Traded to Cleveland Indians; for cash considerations |
| 06/09/2012 | Jeff Francis Signed as Free Agent; one-year contract |
| 06/09/2012 | Esmil Rogers Designated for Assignment |
| 06/07/2012 | Jeff Francis Signed to a Minor League Contract |
| 06/06/2012 | Eliezer Alfonzo Released |
| 06/06/2012 | Jonathan Herrera Sent to Minors for Rehabilitation |
| 06/03/2012 | Jamie Moyer Cleared Waivers and Became a Free Agent |
| 06/03/2012 | Guillermo Moscoso Called Up from Minors |
| 06/02/2012 | Jorge De La Rosa Recalled From Minors Rehab |
| 06/02/2012 | Rex Brothers Called Up from Minors |
| 06/01/2012 | Jamie Moyer Released |
| 06/01/2012 | Carlos Torres Sent to Minors |
| 05/31/2012 | Chris Nelson Recalled From Minors Rehab |
| 05/30/2012 | Jamie Moyer Designated for Assignment |
| 05/30/2012 | Carlos Torres Called Up from Minors |
| 05/28/2012 | Carlos Torres Called Up from Minors; recalled as 26th roster player |
| 05/28/2012 | Carlos Torres Sent to Minors |
| 05/27/2012 | Jorge De La Rosa Sent to Minors for Rehabilitation |
| 05/25/2012 | Wil Nieves Purchased From Minors |
| 05/25/2012 | Hector Gomez Transferred to 60-Day DL; Strained right groin |
| 05/23/2012 | DJ LeMahieu Called Up from Minors |
| 05/21/2012 | Chris Nelson Sent to Minors for Rehabilitation |
| 05/20/2012 | Adam Ottavino Called Up from Minors |
| 05/20/2012 | Rex Brothers Sent to Minors |
| 05/18/2012 | Jorge De La Rosa Recalled From Minors Rehab |
| 05/16/2012 | Eric Young Reinstated From Restricted List |
| 05/15/2012 | Jeremy Guthrie Recalled From Minors Rehab |
| 05/15/2012 | Carlos Torres Sent to Minors |
| 05/13/2012 | Tyler Johnson Signed to a Minor League Contract |
| 05/12/2012 | Eric Young Placed on Restricted List |
| 05/12/2012 | Eric Young Reinstated from Bereavement/Family Medical Emergency List |
| 05/11/2012 | Josh Outman Recalled From Minors Rehab |
| 05/11/2012 | Drew Pomeranz Sent to Minors |
| 05/10/2012 | Jeremy Guthrie Sent to Minors for Rehabilitation |
| 05/09/2012 | Eliezer Alfonzo Outrighted to Minors |
| 05/09/2012 | Christian Friedrich Called Up from Minors |
| 05/09/2012 | Adam Ottavino Sent to Minors |
| 05/08/2012 | Casey Blake Retired |
| 05/08/2012 | Edgmer Escalona Sent to Minors |
| 05/08/2012 | Alex White Called Up from Minors |
| 05/07/2012 | Eliezer Alfonzo Designated for Assignment |
| 05/07/2012 | Eliezer Alfonzo Reinstated from Illegal Substance Suspension; suspension dropped on appeal |
| 05/05/2012 | Eric Young Placed on Bereavement/Family Medical Emergency List |
| 05/05/2012 | Adam Ottavino Called Up from Minors |
| 05/05/2012 | Jordan Pacheco Called Up from Minors |
| 05/04/2012 | Guillermo Moscoso Sent to Minors |
| 05/04/2012 | Carlos Torres Purchased From Minors |
| 05/02/2012 | Jorge De La Rosa Sent to Minors for Rehabilitation |
| 05/02/2012 | Jhoulys Chacin Sent to Minors |
| 05/02/2012 | Jhoulys Chacin Voided Option; voided by MLB per injury settlement |
| 04/28/2012 | Josh Outman Sent to Minors for Rehabilitation |
| 04/28/2012 | Guillermo Moscoso Called Up from Minors |
| 04/25/2012 | Zach Putnam Called Up from Minors; recalled as 26th roster player |
| 04/25/2012 | Zach Putnam Sent to Minors |
| 04/17/2012 | Edgmer Escalona Called Up from Minors |
| 04/17/2012 | Tyler Chatwood Sent to Minors |
| 04/15/2012 | Jordan Pacheco Sent to Minors |
| 04/15/2012 | Drew Pomeranz Called Up from Minors |
| 04/14/2012 | Charlie Blackmon Recalled From Minors Rehab |
| 04/14/2012 | Charlie Blackmon Sent to Minors |
| 04/13/2012 | Charlie Blackmon Sent to Minors for Rehabilitation |
| 04/11/2012 | Brian Anderson Signed to a Minor League Contract |
| 04/07/2012 | Edgar Gonzalez Signed to a Minor League Contract |
| 04/03/2012 | Jamie Moyer Purchased From Minors |
| 04/03/2012 | Adam Ottavino Acquired Off Waivers from St. Louis Cardinals |
| 04/03/2012 | Adam Ottavino Sent to Minors |
| 04/02/2012 | Alex White Sent to Minors |
| 04/01/2012 | Edgmer Escalona Sent to Minors |
| 03/30/2012 | Casey Blake Cleared Waivers and Became a Free Agent |
| 03/30/2012 | Guillermo Moscoso Sent to Minors |
| 03/30/2012 | Drew Pomeranz Sent to Minors |
| 03/27/2012 | Casey Blake Released |
| 03/20/2012 | Zach Putnam Sent to Minors |
| 03/19/2012 | Jamie Hoffmann Refused Minor League Assignment - Free Agent |
| 03/19/2012 | Christian Friedrich Sent to Minors |
| 03/18/2012 | DJ LeMahieu Sent to Minors |
| 03/16/2012 | Jamie Hoffmann Called Up from Minors |
| 03/16/2012 | Jamie Hoffmann Outrighted to Minors |
| 03/15/2012 | Tommy Field Sent to Minors |
| 03/15/2012 | Edwar Cabrera Sent to Minors |
| 03/14/2012 | Jamie Hoffmann Sent to Minors |
| 03/02/2012 | Royce Ring Signed to a Minor League Contract |
| 02/15/2012 | Zack Segovia Signed to a Minor League Contract |
| 02/09/2012 | Steve Holm Signed to a Minor League Contract |
| 02/07/2012 | Jared Wells Signed to a Minor League Contract |
| 02/06/2012 | Jeremy Guthrie Signed; avoids arbitration |
| 02/06/2012 | Jeremy Guthrie Traded from Baltimore Orioles; for RHPs Jason Hammel & Matt Lindstrom |
| 02/06/2012 | Jason Hammel Traded to Baltimore Orioles; w/P Matt Lindstrom for P Jeremy Guthrie |
| 02/06/2012 | Matt Lindstrom Traded to Baltimore Orioles; w/P Jason Hammel for RHP Jeremy Guthrie |
| 02/03/2012 | Matt Belisle Signed; two-year extension |
| 01/25/2012 | Rafael Betancourt Signed; restructured two-year contract |
| 01/21/2012 | Marco Scutaro Traded from Boston Red Sox; for RHP Clayton Mortensen |
| 01/21/2012 | Clayton Mortensen Traded to Boston Red Sox; for SS Marco Scutaro |
| 01/20/2012 | Kevin Slowey Traded to Cleveland Indians; with cash for RHP Zach Putnam |
| 01/20/2012 | Zach Putnam Traded from Cleveland Indians; for RHP Kevin Slowey & cash |
| 01/18/2012 | Jamie Moyer Signed to a Minor League Contract |
| 01/17/2012 | Dexter Fowler Signed; avoids arbitration |
| 01/16/2012 | Seth Smith Traded to Oakland Athletics; for Ps Guillermo Moscoso & Josh Outman |
| 01/16/2012 | Josh Outman Traded from Oakland Athletics; w/P Guillermo Moscoso for OF Seth Smith |
| 01/16/2012 | Guillermo Moscoso Traded from Oakland Athletics; with LHP Josh Outman for OF Seth Smith |
| 01/15/2012 | Seth Smith Signed; avoids arbitration |
| 01/11/2012 | Brad Emaus Traded to Boston Red Sox; for future considerations |
| 01/06/2012 | Casey Blake Signed as Free Agent; one-year contract |
| 01/06/2012 | Brendan Harris Signed to a Minor League Contract |
| 01/05/2012 | Greg Reynolds Traded to Texas Rangers; for 1B Chad Tracy |
| 12/20/2011 | Michael Cuddyer Signed as Free Agent; three-year contract |
| 12/20/2011 | Carlos Torres Signed to a Minor League Contract |
| 12/17/2011 | Wil Nieves Signed to a Minor League Contract |
| 12/16/2011 | Wilkin Castillo Signed to a Minor League Contract |
| 12/16/2011 | Mike Ekstrom Signed to a Minor League Contract |
| 12/12/2011 | Ramon Hernandez Signed as Free Agent; two-year contract |
| 12/12/2011 | Ryan Spilborghs Free Agent - No Contract Offer; non-tendered |
| 12/12/2011 | Kevin Slowey Signed; avoids arbitration |
| 12/12/2011 | Cole Garner Free Agent - No Contract Offer; non-tendered |
| 12/08/2011 | Ian Stewart Traded to Chicago Cubs; for OF Tyler Colvin, four-player deal |
| 12/08/2011 | Tyler Colvin Traded from Chicago Cubs; for INF Ian Stewart, four-player deal |
| 12/08/2011 | DJ LeMahieu Traded from Chicago Cubs; for INF Ian Stewart, four-player deal |
| 12/07/2011 | Huston Street Traded to San Diego Padres; with cash for LHP Nick Schmidt |
| 12/05/2011 | Kevin Slowey Traded from Minnesota Twins; for RHP Daniel Turpen |
| 12/05/2011 | Jamie Hoffmann Acquired Off Waivers from Los Angeles Dodgers |
| 11/30/2011 | Chris Iannetta Traded to Los Angeles Angels; for RHP Tyler Chatwood |
| 11/30/2011 | Tyler Chatwood Traded from Los Angeles Angels; for C Chris Iannetta |
| 11/20/2011 | Ty Wigginton Traded to Philadelphia Phillies; for future considerations |
| 11/18/2011 | Christian Friedrich Purchased From Minors |
| 11/18/2011 | Andrew Brown Outrighted to Minors |
| 11/18/2011 | Edwar Cabrera Purchased From Minors |
| 11/17/2011 | Brandon Wood Signed to a Minor League Contract |