Cubs Roster & Staff
Transactions
| Date | Transaction |
| 12/10/25 | Chicago Cubs purchased contract of RHP Adam Stone in the Rule 5 Draft, AAA Phase. |
| 12/10/25 | Chicago Cubs purchased contract of 3B Devin Ortiz in the Rule 5 Draft, AAA Phase. |
| 12/10/25 | Chicago Cubs purchased contract of RHP Zane Mills in the Rule 5 Draft, AAA Phase. |
| 12/04/25 | Chicago Cubs traded RHP Nico Zeglin to Houston Astros for cash. |
| 12/01/25 | Chicago Cubs signed free agent RHP Sam Mettert to a minor league contract. |