Cubs Roster & Staff
Transactions
| Date | Transaction |
| 06/29/25 | Chicago Cubs sent RHP Michael Fulmer outright to Iowa Cubs. |
| 06/26/25 | Chicago Cubs designated RHP Michael Fulmer for assignment. |
| 06/26/25 | Chicago Cubs activated LHP Shota Imanaga from the 15-day injured list. |
| 06/24/25 | Chicago Cubs activated RHP Porter Hodge from the 15-day injured list. |
| 06/24/25 | Chicago Cubs optioned RHP Ben Brown to Iowa Cubs. |
| 06/23/25 | Chicago Cubs optioned RHP Nate Pearson to Iowa Cubs. |
| 06/23/25 | Chicago Cubs sent LHP Génesis Cabrera outright to Iowa Cubs. |
| 06/23/25 | Chicago Cubs selected the contract of RHP Michael Fulmer from Iowa Cubs. |
| 06/21/25 | Chicago Cubs designated LHP Génesis Cabrera for assignment. |
| 06/21/25 | Chicago Cubs recalled RHP Nate Pearson from Iowa Cubs. |
| 06/20/25 | Chicago Cubs sent LHP Shota Imanaga on a rehab assignment to Iowa Cubs. |
| 06/20/25 | Chicago Cubs signed free agent LHP Jake Brentz to a minor league contract. |
| 06/20/25 | Chicago Cubs sent LHP Shota Imanaga on a rehab assignment to Iowa Cubs. |
| 06/19/25 | Chicago Cubs signed free agent C Miguel Useche to a minor league contract. |
| 06/17/25 | Chicago Cubs sent RHP Eli Morgan on a rehab assignment to Iowa Cubs. |
| 06/14/25 | Chicago Cubs sent RHP Eli Morgan on a rehab assignment to ACL Cubs. |
| 06/13/25 | Chicago Cubs sent RHP Porter Hodge on a rehab assignment to Iowa Cubs. |
| 06/13/25 | Chicago Cubs sent RHP Porter Hodge on a rehab assignment to Iowa Cubs. |
| 06/12/25 | Chicago Cubs signed free agent RHP Yusef Hanania to a minor league contract. |
| 06/12/25 | Chicago Cubs signed free agent RHP Yusef Hanania to a minor league contract. |
| 06/12/25 | Chicago Cubs signed free agent RHP Anderson Rivera to a minor league contract. |
| 06/11/25 | Chicago Cubs sent RHP Tyson Miller outright to Iowa Cubs. |
| 06/10/25 | Chicago Cubs signed free agent C Sammy Sass to a minor league contract. |
| 06/10/25 | Chicago Cubs signed free agent CF Greg Allen to a minor league contract. |
| 06/09/25 | Chicago Cubs sent LHP Shota Imanaga on a rehab assignment to ACL Cubs. |
| 06/05/25 | Chicago Cubs activated RHP Tyson Miller from the 60-day injured list. |
| 06/05/25 | Chicago Cubs designated RHP Tyson Miller for assignment. |
| 06/05/25 | Chicago Cubs signed free agent RHP Jake Woodford to a minor league contract. |
| 06/05/25 | Chicago Cubs sent RHP Brooks Kriske outright to Iowa Cubs. |
| 06/02/25 | Chicago Cubs signed free agent RHP Ben Heller to a minor league contract. |