Cubs Roster & Staff
Transactions
| Date | Transaction |
| 10/02/26 | Chicago Cubs signed free agent 2B Rodelvis Santiesteban to a minor league contract. |
| 10/02/26 | Chicago Cubs signed free agent RHP Maykoll Jaspe to a minor league contract. |
| 10/02/26 | Chicago Cubs signed free agent LHP Manuel Cordero to a minor league contract. |
| 10/02/26 | Chicago Cubs signed free agent RHP Luis Zapata to a minor league contract. |
| 10/02/26 | Chicago Cubs signed free agent RHP Elvin Cepeda to a minor league contract. |
| 10/02/26 | Chicago Cubs signed free agent OF Sebastian Zorrilla to a minor league contract. |
| 10/01/26 | Chicago Cubs activated RHP Tyler Ferguson. |
| 10/01/26 | Chicago Cubs activated 2B James Triantos. |
| 10/01/26 | Chicago Cubs activated LHP Braxton Garrett. |
| 10/01/26 | Chicago Cubs activated LHP Jordan Wicks. |
| 10/01/26 | Chicago Cubs activated 3B BJ Murray Jr.. |
| 10/01/26 | Chicago Cubs activated RHP Edward Cabrera. |
| 10/01/26 | Chicago Cubs activated RHP Ethan Roberts. |
| 10/01/26 | Chicago Cubs activated DH Kevin Alcántara. |
| 10/01/26 | Chicago Cubs activated RHP Jayden Murray. |
| 10/01/26 | Chicago Cubs activated CF Justin Dean. |
| 10/01/26 | Chicago Cubs activated RHP Trent Thornton. |
| 10/01/26 | Chicago Cubs activated LHP Caleb Thielbar. |
| 10/01/26 | Chicago Cubs activated RHP Julian Aguiar. |
| 10/01/26 | Chicago Cubs activated RHP Gavin Hollowell. |