Cubs Roster & Staff
Transactions
| Date | Transaction |
| 04/27/15 | Chicago Cubs recalled Junior Lake from Iowa Cubs. |
| 04/27/15 | Chicago Cubs optioned RHP Brian Schlitter to Iowa Cubs. |
| 04/26/15 | Chicago Cubs signed free agent LHP Daniel Schlereth to a minor league contract. |
| 04/25/15 | Chicago Cubs sent RHP Dallas Beeler on a rehab assignment to Iowa Cubs. |
| 04/21/15 | Chicago Cubs optioned 2B Arismendy Alcantara to Iowa Cubs. |
| 04/21/15 | Chicago Cubs selected the contract of 2B Addison Russell from Iowa Cubs. |
| 04/21/15 | Chicago Cubs transferred 3B Mike Olt from the 15-day disabled list to the 60-day disabled list. Hairline fracture in his right wrist |
| 04/20/15 | Chicago Cubs signed free agent RHP Sucre Valdez to a minor league contract. |
| 04/19/15 | Chicago Cubs transferred RHP Jacob Turner from the 15-day disabled list to the 60-day disabled list. Right shoulder inflammation |
| 04/19/15 | Chicago Cubs selected the contract of Gonzalez Germen from Iowa Cubs. |
| 04/19/15 | Chicago Cubs optioned CF Matt Szczur to Iowa Cubs. |
| 04/17/15 | Chicago Cubs sent LHP Tsuyoshi Wada on a rehab assignment to Iowa Cubs. |
| 04/17/15 | Chicago Cubs placed 3B Mike Olt on the 15-day disabled list retroactive to April 15, 2015. Hairline fracture in his right wrist |
| 04/17/15 | Chicago Cubs activated LF Chris Denorfia from the 15-day disabled list. |
| 04/17/15 | Chicago Cubs selected the contract of 3B Kris Bryant from Iowa Cubs. |
| 04/17/15 | Chicago Cubs placed RHP Neil Ramirez on the 15-day disabled list retroactive to April 16, 2015. Right shoulder inflammation |
| 04/14/15 | Chicago Cubs recalled LHP Zac Rosscup from Iowa Cubs. |
| 04/14/15 | Chicago Cubs placed 2B Tommy La Stella on the 15-day disabled list retroactive to April 9, 2015. Right rib cage inflammation. |
| 04/12/15 | Chicago Cubs sent OF Chris Denorfia on a rehab assignment to Myrtle Beach Pelicans. |
| 04/10/15 | Chicago Cubs placed RHP Justin Grimm on the 15-day disabled list retroactive to April 2, 2015. Right forearm inflammation |
| 04/10/15 | Chicago Cubs recalled Brian Schlitter from Iowa Cubs. |
| 04/10/15 | Chicago Cubs signed free agent RHP Fauris Guerrero to a minor league contract. |
| 04/08/15 | Chicago Cubs signed free agent LHP James Russell to a minor league contract. |
| 04/07/15 | Chicago Cubs released CF Ryan Sweeney. |
| 04/05/15 | Chicago Cubs placed RHP Jacob Turner on the 15-day disabled list retroactive to March 27, 2015. Right shoulder inflammation. |
| 04/05/15 | Chicago Cubs placed RF Chris Denorfia on the 15-day disabled list retroactive to March 27, 2015. Mild left hamstring strain. |
| 04/05/15 | Chicago Cubs designated CF Ryan Sweeney for assignment. |
| 04/05/15 | Chicago Cubs selected the contract of 2B Jonathan Herrera from Iowa Cubs. |
| 04/05/15 | Chicago Cubs placed RHP Dallas Beeler on the 15-day disabled list retroactive to March 27, 2015. Right shoulder inflammation. |
| 04/05/15 | Chicago Cubs placed LHP Tsuyoshi Wada on the 15-day disabled list retroactive to March 27, 2015. Mild left groin strain. |
| 04/03/15 | Chicago Cubs sent LHP Drake Britton outright to Iowa Cubs. |
| 04/02/15 | Chicago Cubs released RHP Justin Amlung. |
| 04/02/15 | Chicago Cubs traded RHP Tony Zych to Seattle Mariners for Player To Be Named Later. |
| 04/01/15 | Chicago Cubs released LHP Austin Kirk. |
| 04/01/15 | Chicago Cubs optioned LF Junior Lake to Iowa Cubs. |
| 04/01/15 | Chicago Cubs optioned RHP Brian Schlitter to Iowa Cubs. |
| 04/01/15 | Chicago Cubs optioned LHP Zac Rosscup to Iowa Cubs. |