Cubs Roster & Staff
Transactions
| Date | Transaction |
| 08/03/25 | RHP Daniel Palencia changed number to 48. |
| 08/03/25 | RHP Michael Soroka changed number to 41. |
| 08/03/25 | RHP Ben Brown changed number to 32. |
| 08/03/25 | RHP Colin Rea changed number to 53. |
| 08/03/25 | RHP Brad Keller changed number to 40. |
| 08/03/25 | RHP Andrew Kittredge changed number to 59. |
| 08/03/25 | RHP Ryan Brasier changed number to 54. |
| 08/03/25 | Chicago Cubs sent RHP Jameson Taillon on a rehab assignment to Iowa Cubs. |
| 08/03/25 | CF Pete Crow-Armstrong changed number to 4. |
| 08/03/25 | LF Willi Castro changed number to 1. |
| 08/03/25 | RHP Cade Horton changed number to 22. |
| 08/03/25 | LHP Taylor Rogers changed number to 17. |
| 08/03/25 | 3B Matt Shaw changed number to 6. |
| 08/03/25 | RF Seiya Suzuki changed number to 27. |
| 08/03/25 | LHP Caleb Thielbar changed number to 24. |
| 08/03/25 | RF Kyle Tucker changed number to 30. |
| 08/03/25 | 1B Justin Turner changed number to 3. |
| 08/03/25 | LHP Drew Pomeranz changed number to 45. |
| 08/03/25 | Chicago Cubs released RHP Chris Flexen. |
| 08/03/25 | 3B Jon Berti changed number to 5. |
| 08/03/25 | C Carson Kelly changed number to 15. |
| 08/03/25 | 1B Michael Busch changed number to 29. |
| 08/03/25 | C Reese McGuire changed number to 20. |
| 08/03/25 | LF Ian Happ changed number to 8. |
| 08/03/25 | 2B Nico Hoerner changed number to 2. |
| 08/03/25 | LHP Matthew Boyd changed number to 16. |
| 08/03/25 | SS Dansby Swanson changed number to 7. |
| 08/03/25 | LHP Shota Imanaga changed number to 18. |
| 08/03/25 | Baltimore Orioles claimed 3B Vidal Bruján off waivers from Chicago Cubs. |
| 08/02/25 | Chicago Cubs designated RHP Brooks Kriske for assignment. |
| 08/02/25 | RHP Brad Keller changed number to 23. |
| 08/02/25 | RF Seiya Suzuki changed number to 23. |
| 08/02/25 | LF Willi Castro changed number to 23. |
| 08/02/25 | LHP Shota Imanaga changed number to 23. |
| 08/02/25 | LF Ian Happ changed number to 23. |
| 08/02/25 | CF Pete Crow-Armstrong changed number to 23. |
| 08/02/25 | Chicago Cubs activated RHP Michael Soroka. |
| 08/02/25 | LHP Drew Pomeranz changed number to 23. |
| 08/02/25 | 1B Justin Turner changed number to 23. |
| 08/02/25 | LHP Caleb Thielbar changed number to 23. |
| 08/02/25 | 3B Jon Berti changed number to 23. |
| 08/02/25 | LHP Taylor Rogers changed number to 23. |
| 08/02/25 | RHP Cade Horton changed number to 23. |
| 08/02/25 | RHP Ben Brown changed number to 23. |
| 08/02/25 | LHP Matthew Boyd changed number to 23. |
| 08/02/25 | C Reese McGuire changed number to 23. |
| 08/02/25 | RHP Colin Rea changed number to 23. |
| 08/02/25 | C Carson Kelly changed number to 23. |
| 08/02/25 | RHP Andrew Kittredge changed number to 23. |
| 08/02/25 | 1B Michael Busch changed number to 23. |
| 08/02/25 | RHP Daniel Palencia changed number to 23. |
| 08/02/25 | RHP Michael Soroka changed number to 23. |
| 08/02/25 | RF Kyle Tucker changed number to 23. |
| 08/02/25 | 2B Nico Hoerner changed number to 23. |
| 08/02/25 | RHP Ryan Brasier changed number to 23. |
| 08/02/25 | SS Dansby Swanson changed number to 23. |
| 08/02/25 | 3B Matt Shaw changed number to 23. |
| 08/01/25 | Chicago Cubs activated RHP Andrew Kittredge. |
| 08/01/25 | Chicago Cubs released RHP Ryan Pressly. |
| 08/01/25 | Chicago Cubs activated LF Willi Castro. |
| 08/01/25 | Chicago Cubs activated LHP Taylor Rogers. |
| 08/01/25 | Chicago Cubs optioned RHP Gavin Hollowell to Iowa Cubs. |
| 08/01/25 | Chicago Cubs optioned C Moisés Ballesteros to Iowa Cubs. |