Cubs Roster & Staff
Transactions
| Date | Transaction |
| 08/03/26 | Chicago Cubs designated LHP Luke Little for assignment. |
| 08/03/26 | Chicago Cubs optioned CF Justin Dean to Iowa Cubs. |
| 08/03/26 | Los Angeles Angels traded RHP Ryan Zeferjahn to Chicago Cubs for C Moisés Ballesteros and RHP Mason McGwire. |
| 08/03/26 | Los Angeles Angels traded RHP Ryan Zeferjahn to Chicago Cubs for C Moisés Ballesteros and RHP Mason McGwire. |
| 08/03/26 | Los Angeles Angels traded RHP Ryan Zeferjahn to Chicago Cubs for C Moisés Ballesteros and RHP Mason McGwire. |
| 08/03/26 | Chicago Cubs traded SS Jefferson Rojas to New York Mets for RHP Clay Holmes and LF Tyrone Taylor. |
| 08/03/26 | Chicago Cubs traded SS Jefferson Rojas to New York Mets for RHP Clay Holmes and LF Tyrone Taylor. |
| 08/03/26 | Chicago Cubs recalled DH Kevin Alcántara from Iowa Cubs. |
| 08/03/26 | Miami Marlins traded LHP Braxton Garrett to Chicago Cubs for 3B Jonathon Long and RHP Jace Beck. |
| 08/03/26 | Miami Marlins traded LHP Braxton Garrett to Chicago Cubs for 3B Jonathon Long and RHP Jace Beck. |
| 08/03/26 | Miami Marlins traded LHP Braxton Garrett to Chicago Cubs for 3B Jonathon Long and RHP Jace Beck. |
| 08/03/26 | Chicago Cubs traded SS Jefferson Rojas to New York Mets for RHP Clay Holmes and LF Tyrone Taylor. |
| 08/02/26 | Toronto Blue Jays traded RHP Kevin Gausman to Chicago Cubs for CF Brett Bateman and SS Ty Southisene. |
| 08/02/26 | Toronto Blue Jays traded RHP Kevin Gausman to Chicago Cubs for CF Brett Bateman and SS Ty Southisene. |
| 08/02/26 | Toronto Blue Jays traded RHP Kevin Gausman to Chicago Cubs for CF Brett Bateman and SS Ty Southisene. |
| 08/02/26 | Chicago Cubs traded RHP Jameson Taillon and cash to Toronto Blue Jays for Player To Be Named Later. |
| 08/01/26 | Chicago Cubs sent RHP Andrew Wantz outright to Iowa Cubs. |