Cubs Roster & Staff
Transactions
| Date | Transaction |
| 08/30/19 | Chicago Cubs sent C Willson Contreras on a rehab assignment to Iowa Cubs. |
| 08/30/19 | Chicago Cubs activated LHP Cole Hamels from the paternity list. |
| 08/30/19 | Chicago Cubs optioned RHP James Norwood to Iowa Cubs. |
| 08/27/19 | Tony Kemp changed number to 4. |
| 08/27/19 | Chicago Cubs recalled James Norwood from Iowa Cubs. |
| 08/27/19 | Chicago Cubs placed LHP Cole Hamels on the paternity list. |
| 08/25/19 | Chicago Cubs placed LHP Derek Holland on the 10-day injured list retroactive to August 24, 2019. Left wrist contusion. |
| 08/25/19 | Chicago Cubs recalled David Bote from Iowa Cubs. |
| 08/22/19 | Chicago Cubs sent RHP Kendall Graveman on a rehab assignment to AZL Cubs 1. |
| 08/20/19 | Chicago Cubs activated RHP Steve Cishek from the 10-day injured list. |
| 08/19/19 | Chicago Cubs optioned RF Mark Zagunis to Iowa Cubs. |
| 08/19/19 | Chicago Cubs optioned 3B David Bote to Iowa Cubs. |
| 08/18/19 | Chicago Cubs activated RHP Craig Kimbrel from the 10-day injured list. |
| 08/18/19 | Chicago Cubs optioned RHP Duane Underwood Jr. to Iowa Cubs. |
| 08/18/19 | Chicago Cubs recalled Mark Zagunis from Iowa Cubs. |
| 08/17/19 | Chicago Cubs sent 2B Daniel Descalso on a rehab assignment to Iowa Hawkeyes. |
| 08/17/19 | Chicago Cubs sent 2B Daniel Descalso on a rehab assignment to Iowa Cubs. |
| 08/16/19 | Chicago Cubs activated RHP Brandon Kintzler from the 10-day injured list. |
| 08/16/19 | Chicago Cubs recalled 2B Addison Russell from Iowa Cubs. |
| 08/16/19 | Chicago Cubs optioned RHP James Norwood to Iowa Cubs. |
| 08/16/19 | Chicago Cubs optioned CF Albert Almora Jr. to Iowa Cubs. |
| 08/15/19 | Chicago Cubs optioned RHP Alec Mills to Iowa Cubs. |
| 08/15/19 | Chicago Cubs recalled James Norwood from Iowa Cubs. |
| 08/13/19 | Chicago Cubs activated LHP Kyle Ryan from the bereavement list. |
| 08/11/19 | Chicago Cubs optioned RHP Dillon Maples to Iowa Cubs. |
| 08/10/19 | Chicago Cubs placed RHP Steve Cishek on the 10-day injured list. Left hip inflammation. |
| 08/10/19 | Chicago Cubs recalled Dillon Maples from Iowa Cubs. |
| 08/09/19 | Chicago Cubs placed LHP Kyle Ryan on the bereavement list. |
| 08/09/19 | Chicago Cubs recalled Alec Mills from Iowa Cubs. |
| 08/08/19 | Chicago Cubs signed free agent C Jonathan Lucroy. |
| 08/08/19 | Chicago Cubs optioned C Taylor Davis to Iowa Cubs. |
| 08/07/19 | Chicago Cubs signed free agent RHP Alex Wilson to a minor league contract. |
| 08/06/19 | Chicago Cubs signed RHP Tyler Schlaffer. |
| 08/06/19 | Chicago Cubs placed RHP Brandon Kintzler on the 10-day injured list. Right pectoral inflammation. |
| 08/06/19 | Chicago Cubs activated RHP Pedro Strop from the 10-day injured list. |
| 08/06/19 | Chicago Cubs signed free agent RHP Chih-Wei Hu to a minor league contract. |
| 08/05/19 | Chicago Cubs placed RHP Craig Kimbrel on the 10-day injured list retroactive to August 4, 2019. Right knee inflammation. |
| 08/05/19 | Chicago Cubs signed free agent RHP Dawel Rodriguez to a minor league contract. |
| 08/05/19 | Chicago Cubs released RHP Brad Brach. |
| 08/05/19 | Chicago Cubs recalled Duane Underwood Jr. from Iowa Cubs. |
| 08/04/19 | Chicago Cubs placed C Willson Contreras on the 10-day injured list. Riight hamstring strain. |
| 08/04/19 | Chicago Cubs recalled Taylor Davis from Iowa Cubs. |
| 08/03/19 | Chicago Cubs designated RHP Brad Brach for assignment. |
| 08/03/19 | Chicago Cubs sent RHP Oscar De La Cruz outright to Tennessee Smokies. |
| 08/03/19 | Chicago Cubs activated LHP Cole Hamels from the 10-day injured list. |
| 08/02/19 | LHP Brad Wieck assigned to Iowa Cubs from Chicago Cubs. |
| 08/01/19 | Chicago Cubs activated RF Nicholas Castellanos. |
| 08/01/19 | Chicago Cubs signed free agent OF Luis Berelleza to a minor league contract. |
| 08/01/19 | Chicago Cubs optioned 2B Robel Garcia to Iowa Cubs. |