Cubs Roster & Staff
Transactions
| Date | Transaction |
| 07/31/15 | Chicago Cubs signed free agent OF Isaac Paredes to a minor league contract. |
| 07/31/15 | Miami Marlins traded RHP Dan Haren and cash to Chicago Cubs for RHP Ivan Pineyro and SS Elliot Soto. |
| 07/31/15 | Miami Marlins traded RHP Dan Haren and cash to Chicago Cubs for RHP Ivan Pineyro and SS Elliot Soto. |
| 07/31/15 | Miami Marlins traded RHP Dan Haren and cash to Chicago Cubs for RHP Ivan Pineyro and SS Elliot Soto. |
| 07/31/15 | Baltimore Orioles traded RHP Tommy Hunter to Chicago Cubs for RF Junior Lake. |
| 07/31/15 | Baltimore Orioles traded RHP Tommy Hunter to Chicago Cubs for RF Junior Lake. |
| 07/31/15 | Chicago Cubs designated RHP Ben Rowen for assignment. |
| 07/31/15 | Chicago Cubs sent Mike Baxter outright to Iowa Cubs. |
| 07/30/15 | Chicago Cubs signed free agent LHP Faustino Carrera to a minor league contract. |
| 07/29/15 | Chicago Cubs sent 2B Tommy La Stella on a rehab assignment to Tennessee Smokies. |
| 07/29/15 | Chicago Cubs placed RHP Neil Ramirez on the 15-day disabled list. Left abdominal soreness. |
| 07/29/15 | Chicago Cubs selected the contract of RHP Ben Rowen from Iowa Cubs. |
| 07/29/15 | Chicago Cubs recalled Yoervis Medina from Iowa Cubs. |
| 07/29/15 | Chicago Cubs optioned RHP Dallas Beeler to Iowa Cubs. |
| 07/29/15 | Chicago Cubs signed free agent OF Ruben Reyes to a minor league contract. |
| 07/29/15 | Chicago Cubs designated RF Mike Baxter for assignment. |
| 07/28/15 | Chicago Cubs optioned RHP Yoervis Medina to Iowa Cubs. |
| 07/28/15 | Chicago Cubs recalled Dallas Beeler from Iowa Cubs. |
| 07/28/15 | Chicago Cubs signed free agent OF Abraham Rodriguez to a minor league contract. |
| 07/28/15 | Chicago Cubs sent LHP Zac Rosscup on a rehab assignment to Iowa Cubs. |
| 07/27/15 | Chicago Cubs signed free agent LHP Ryan Buchter to a minor league contract. |
| 07/27/15 | Chicago Cubs signed free agent RHP Javier Assad to a minor league contract. |
| 07/27/15 | Chicago Cubs signed free agent C Kevin Zamudio to a minor league contract. |
| 07/27/15 | Chicago Cubs released RHP Edwin Jackson. |
| 07/25/15 | Chicago Cubs signed free agent RHP Jose Albertos to a minor league contract. |
| 07/23/15 | Chicago Cubs optioned LHP Clayton Richard to Iowa Cubs. |
| 07/23/15 | Chicago Cubs optioned RHP Dallas Beeler to Iowa Cubs. |
| 07/22/15 | Chicago Cubs recalled Dallas Beeler from Iowa Cubs. |
| 07/22/15 | Chicago Cubs recalled Yoervis Medina from Iowa Cubs. |
| 07/22/15 | Chicago Cubs designated Clayton Richard for assignment. |
| 07/21/15 | Chicago Cubs sent LHP Zac Rosscup on a rehab assignment to Tennessee Smokies. |
| 07/20/15 | Chicago Cubs selected the contract of RHP Rafael Soriano from Iowa Cubs. |
| 07/20/15 | Chicago Cubs designated RHP Edwin Jackson for assignment. |
| 07/17/15 | Chicago Cubs signed free agent C Miguel Amaya to a minor league contract. |
| 07/17/15 | Chicago Cubs placed C Miguel Montero on the 15-day disabled list retroactive to July 12, 2015. Sprained left thumb |
| 07/17/15 | Chicago Cubs signed free agent C Luke Carlin to a minor league contract. |
| 07/17/15 | Chicago Cubs recalled LF Kyle Schwarber from Iowa Cubs. |
| 07/16/15 | Chicago Cubs signed RHP Scott Effross. |
| 07/15/15 | Chicago Cubs sent LHP Zac Rosscup on a rehab assignment to AZL Cubs. |
| 07/14/15 | Chicago Cubs signed RHP Casey Bloomquist. |
| 07/13/15 | Cincinnati Reds claimed RHP Donn Roach off waivers from Chicago Cubs. |
| 07/12/15 | Chicago Cubs activated C David Ross from the 7-day disabled list. |
| 07/12/15 | Chicago Cubs optioned RF Mike Baxter to Iowa Cubs. |
| 07/11/15 | Chicago Cubs sent LHP Tsuyoshi Wada on a rehab assignment to Iowa Cubs. |
| 07/10/15 | Chicago Cubs signed RHP Preston Morrison. |
| 07/10/15 | Chicago Cubs designated RHP Donn Roach for assignment. |
| 07/10/15 | Chicago Cubs optioned 3B Mike Olt to Iowa Cubs. |
| 07/08/15 | Chicago Cubs optioned RHP Dallas Beeler to Iowa Cubs. |
| 07/07/15 | Chicago Cubs recalled Dallas Beeler from Iowa Cubs. |
| 07/07/15 | Colorado Rockies claimed RHP Gonzalez Germen off waivers from Chicago Cubs. |
| 07/07/15 | Chicago Cubs signed 2B P.J. Higgins. |
| 07/06/15 | Chicago Cubs sent LHP Tsuyoshi Wada on a rehab assignment to Tennessee Smokies. |
| 07/05/15 | Chicago Cubs optioned CF Matt Szczur to Iowa Cubs. |
| 07/05/15 | Chicago Cubs signed free agent RHP Ben Rowen to a minor league contract. |
| 07/05/15 | Chicago Cubs activated RF Jorge Soler from the 15-day disabled list. |
| 07/04/15 | Chicago Cubs optioned RHP Donn Roach to Iowa Cubs. |
| 07/04/15 | Chicago Cubs signed free agent RHP Edison Novas to a minor league contract. |
| 07/04/15 | Chicago Cubs placed C David Ross on the 7-day disabled list retroactive to July 2, 2015. Concussion |
| 07/04/15 | Tommy La Stella roster status changed by Chicago Cubs. |
| 07/04/15 | Chicago Cubs signed free agent LHP Jose Mac Donna to a minor league contract. |
| 07/04/15 | Chicago Cubs designated RHP Gonzalez Germen for assignment. |
| 07/04/15 | Chicago Cubs selected the contract of C Taylor Teagarden from Iowa Cubs. |
| 07/04/15 | Chicago Cubs selected the contract of LHP Clayton Richard from Iowa Cubs. |
| 07/03/15 | Chicago Cubs traded C Rafael Lopez to Los Angeles Angels for LHP Manuel Rondon and cash. |
| 07/03/15 | Chicago Cubs traded C Rafael Lopez to Los Angeles Angels for LHP Manuel Rondon and cash. |
| 07/03/15 | Pittsburgh Pirates traded LHP Clayton Richard to Chicago Cubs for cash. |
| 07/02/15 | Chicago Cubs signed LHP Bryan Hudson. |