Great Lakes Loons Roster & Staff
Great Lakes Transactions
| Date | Transaction |
| 06/23/26 | RHP Christian Zazueta assigned to Tulsa Drillers from Great Lakes Loons. |
| 06/23/26 | RHP Tyler Gough assigned to Great Lakes Loons from Ontario Tower Buzzers. |
| 06/23/26 | SS Jose Izarra assigned to Tulsa Drillers from Great Lakes Loons. |
| 06/23/26 | 3B Chase Harlan assigned to Great Lakes Loons from Ontario Tower Buzzers. |
| 06/22/26 | Great Lakes Loons released SS Jordan Thompson. |
| 06/19/26 | Great Lakes Loons activated RHP Isaac Ayon. |
| 06/19/26 | Great Lakes Loons activated SS Logan Wagner from the 7-day injured list. |
| 06/16/26 | RHP Isaac Ayon suspended. |
| 06/16/26 | RHP Chase Adkins assigned to Great Lakes Loons. |
| 06/16/26 | C Chase Adkison assigned to Great Lakes Loons. |
| 06/16/26 | RHP Seamus Barrett assigned to Great Lakes Loons from Ontario Tower Buzzers. |
| 06/15/26 | Great Lakes Loons placed C Jesus Galiz on the full-season injured list. |
| 06/15/26 | Great Lakes Loons sent SS Sam Mongelli on a rehab assignment to ACL Dodgers. |
| 06/15/26 | Great Lakes Loons placed RHP Joseilyn Gonzalez on the 7-day injured list. |
| 06/15/26 | Great Lakes Loons placed C Anson Aroz on the 7-day injured list. |
| 06/12/26 | Great Lakes Loons sent SS Logan Wagner on a rehab assignment to ACL Dodgers. |
| 06/10/26 | Great Lakes Loons placed SS Nico Perez on the 7-day injured list. |
| 06/09/26 | Great Lakes Loons activated SS Cameron Decker from the 7-day injured list. |
| 06/09/26 | OF Kole Myers assigned to Tulsa Drillers from Great Lakes Loons. |
| 06/02/26 | Great Lakes Loons transferred C Jesus Galiz from the 7-day injured list to the 60-day injured list. |
| 06/02/26 | C Anson Aroz assigned to Great Lakes Loons from Ontario Tower Buzzers. |
| 06/01/26 | SS Bryan Gonzalez Garcia assigned to ACL Dodgers from Great Lakes Loons. |