Mariners Roster & Staff
Transactions
| Date | Transaction |
| 07/12/24 | Seattle Mariners signed free agent 2B Kobe Kato to a minor league contract. |
| 07/12/24 | Seattle Mariners signed free agent OF Yunior Garcia to a minor league contract. |
| 07/12/24 | Seattle Mariners activated RHP Bryan Woo from the 15-day injured list. |
| 07/12/24 | Seattle Mariners optioned RHP Eduard Bazardo to Tacoma Rainiers. |
| 07/10/24 | Seattle Mariners placed RF Dominic Canzone on the 10-day injured list. Right adductor strain. |
| 07/10/24 | Seattle Mariners recalled OF Jonatan Clase from Tacoma Rainiers. |
| 07/09/24 | Seattle Mariners signed free agent RHP Chia-Shi Shen to a minor league contract. |
| 07/08/24 | Seattle Mariners activated RHP Gregory Santos from the 60-day injured list. |
| 07/08/24 | Seattle Mariners sent C Seby Zavala outright to Tacoma Rainiers. |
| 07/08/24 | Seattle Mariners optioned RHP Emerson Hancock to Tacoma Rainiers. |
| 07/06/24 | Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Everett AquaSox. |
| 07/06/24 | Seattle Mariners sent RHP Bryan Woo on a rehab assignment to Everett AquaSox. |
| 07/06/24 | Seattle Mariners designated C Seby Zavala for assignment. |
| 07/06/24 | Seattle Mariners recalled RHP Emerson Hancock from Tacoma Rainiers. |
| 07/04/24 | Seattle Mariners claimed OF Duke Ellis off waivers from New York Mets. |
| 07/02/24 | Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers. |
| 07/02/24 | Seattle Mariners signed free agent RHP Chris Devenski. |
| 07/02/24 | Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers. |
| 07/02/24 | Seattle Mariners selected the contract of C Seby Zavala from Tacoma Rainiers. |
| 07/02/24 | Seattle Mariners optioned LHP Jhonathan Diaz to Tacoma Rainiers. |