Cubs Roster & Staff
Transactions
| Date | Transaction |
| 07/24/26 | Chicago Cubs optioned DH Kevin Alcántara to Iowa Cubs. |
| 07/24/26 | Chicago Cubs recalled 2B James Triantos from Iowa Cubs. |
| 07/23/26 | Chicago Cubs sent LHP Drew Pomeranz outright to Iowa Cubs. |
| 07/23/26 | Chicago Cubs optioned DH Kevin Alcántara to Iowa Cubs. |
| 07/21/26 | Chicago Cubs signed free agent LF Greg Jones to a minor league contract. |
| 07/20/26 | Chicago Cubs activated RHP Aaron Civale. |
| 07/20/26 | Chicago Cubs activated RHP Jameson Taillon from the 15-day injured list. |
| 07/20/26 | Chicago Cubs placed RHP Phil Maton on the 15-day injured list. Right knee tendinitis. |
| 07/20/26 | Chicago Cubs designated LHP Drew Pomeranz for assignment. |
| 07/19/26 | Chicago Cubs sent RHP Ethan Roberts on a rehab assignment to Iowa Cubs. |
| 07/18/26 | RHP Aaron Civale roster status changed by Chicago Cubs. |
| 07/18/26 | Chicago Cubs signed free agent RHP Jake Woodford to a minor league contract. |
| 07/18/26 | Athletics traded RHP Aaron Civale to Chicago Cubs for RHP Aiden Moffett. |
| 07/18/26 | Athletics traded RHP Aaron Civale to Chicago Cubs for RHP Aiden Moffett. |
| 07/17/26 | Chicago Cubs signed RHP Chase Meyer. |
| 07/17/26 | Chicago Cubs signed 1B Myles Bailey. |
| 07/17/26 | Chicago Cubs signed RHP Cade Townsend. |
| 07/17/26 | Chicago Cubs signed RHP Luke Alwood. |
| 07/17/26 | Chicago Cubs signed OF Caden Sorrell. |
| 07/17/26 | Chicago Cubs signed RHP Isaac Morton. |
| 07/17/26 | Chicago Cubs signed LHP Cole Tryba. |
| 07/17/26 | Chicago Cubs signed RHP Dylan Blomker. |
| 07/17/26 | Chicago Cubs signed RHP Ashton Pocol. |
| 07/17/26 | Chicago Cubs signed C Brennan Hudson. |
| 07/17/26 | Chicago Cubs signed RHP Dylan Marionneaux. |
| 07/17/26 | Chicago Cubs signed RHP Carson Jasa. |
| 07/17/26 | Chicago Cubs signed RHP Lance Williams. |
| 07/17/26 | Chicago Cubs signed RHP Ryan Marton. |
| 07/17/26 | Chicago Cubs signed LHP Brandon Arvidson. |
| 07/17/26 | Chicago Cubs signed RHP Griffin Naess. |
| 07/16/26 | Chicago Cubs signed free agent RHP Anderson Ramos to a minor league contract. |
| 07/16/26 | Chicago Cubs signed free agent RHP Johasael Solano to a minor league contract. |
| 07/16/26 | Chicago Cubs signed free agent RHP Felix Teran to a minor league contract. |
| 07/14/26 | Chicago Cubs sent RHP Jake Woodford outright to Iowa Cubs. |
| 07/11/26 | Chicago Cubs designated RHP Jake Woodford for assignment. |
| 07/11/26 | Chicago Cubs sent RHP Jameson Taillon on a rehab assignment to Iowa Cubs. |
| 07/11/26 | Chicago Cubs activated RHP Phil Maton from the 15-day injured list. |
| 07/08/26 | Chicago Cubs signed LHP Josh Fleming. |
| 07/08/26 | Chicago Cubs sent RHP Phil Maton on a rehab assignment to Iowa Cubs. |
| 07/07/26 | Chicago Cubs signed free agent RHP Josnel Bazardo to a minor league contract. |
| 07/07/26 | Chicago Cubs sent RHP Bryse Wilson outright to Iowa Cubs. |
| 07/06/26 | Chicago Cubs signed free agent LF Chas McCormick to a minor league contract. |
| 07/05/26 | Chicago Cubs sent RHP Jameson Taillon on a rehab assignment to South Bend Cubs. |
| 07/05/26 | Chicago Cubs sent RHP Jameson Taillon on a rehab assignment to South Bend Cubs. |
| 07/04/26 | Chicago Cubs designated RHP Bryse Wilson for assignment. |
| 07/04/26 | Chicago Cubs signed free agent RHP Jake Woodford. |
| 07/03/26 | Chicago Cubs selected the contract of LHP Drew Pomeranz from Iowa Cubs. |
| 07/02/26 | Chicago Cubs signed free agent RHP Jacob Wallace to a minor league contract. |
| 07/02/26 | Chicago Cubs signed free agent SS Luis Abreu to a minor league contract. |
| 07/02/26 | Chicago Cubs optioned LHP Jordan Wicks to Iowa Cubs. |
| 07/01/26 | RHP Christian Roa elected free agency. |
| 07/01/26 | Chicago Cubs acquired 3B Michael Hallquist from the Milwaukee Milkmen of the American Association. |
| 07/01/26 | Chicago Cubs sent RHP Eduarniel Núñez outright to Iowa Cubs. |