Friday, June 5,2026Grant Knipp [Inland Empire-A] ... Assigned to Inland Empire 66ers (A)
Will Wilson [Everett-A+] ... Assigned to Everett AquaSox (A+) for rehab
Thursday, June 4,2026Teddy McGraw [Arkansas-AA] ... Assigned to Arkansas Travelers (AA)
Jack White [Everett-A+] ... Assigned to Everett AquaSox (A+)
Tuesday, June 2,2026Brennen Davis [Tacoma-AAA] ... IL-7 Tacoma Rainiers placed CF Brennen Davis on the 7-day injured list
Sunday, May 31,2026Cole Cheatham [Inland Empire-A] ... Assigned to Inland Empire 66ers (A)
Friday, May 29,2026Dane Dunning [Tacoma-AAA] ... IL-7 Tacoma Rainiers transferred RHP Dane Dunning from the 7-day injured list to the 60-day injured list
Cesar Farias [Dominican Mariners-Rk] ... IL-60 DSL Mariners placed RHP Cesar Farias on the 60-day injured list
Thursday, May 28,2026Wednesday, May 27,2026Jarvis Gomez [Dominican Mariners-Rk] ... Assigned to DSL Mariners (Rk)
Gregory Pio [Dominican Mariners-Rk] ... Assigned to DSL Mariners (Rk)
Ambeiro Recio [Dominican Mariners-Rk] ... Assigned to DSL Mariners (Rk)
Tuesday, May 26,2026Nick Davila [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA)
Dane Dunning [Tacoma-AAA] ... IL-7 Tacoma Rainiers placed RHP Dane Dunning on the 7-day injured list
Teddy McGraw [Inland Empire-A] ... Assigned to Inland Empire 66ers (A) for rehab
Brock Moore [Arkansas-AA] ... Assigned to Arkansas Travelers (AA)
Brock Rodden [Tacoma-AAA] ... IL-7 Tacoma Rainiers placed SS Brock Rodden on the 7-day injured list
Monday, May 25,2026Sunday, May 24,2026Jo Oyama [ACL Mariners-Rk] ... Assigned to ACL Mariners (Rk)
Saturday, May 23,2026Jacob Denner [Everett-A+] ... IL-60 Everett AquaSox placed LHP Jacob Denner on the full-season injured list
Gabe Speier [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA) for rehab
Friday, May 22,2026Connor Joe [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA)
Jesus Rondon [Dominican Mariners-Rk] ... Assigned to DSL Mariners (Rk)
Jose Zerpa [Inland Empire-A] ... Placed on restricted list
Wednesday, May 20,2026Gabe Speier [Everett-A+] ... Assigned to Everett AquaSox (A+) for rehab
Tuesday, May 19,2026Jo Oyama [Everett-A+] ... Assigned to Everett AquaSox (A+)
Axel Sanchez [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA)
Monday, May 18,2026Spencer Packard [ACL Mariners-Rk] ... Assigned to ACL Mariners (Rk) for rehab
Leo Rivas [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA)
Gabriel Sosa [Everett-A+] ... Activated from temporarily inactive list
Jack White [ACL Mariners-Rk] ... Assigned to ACL Mariners (Rk) for rehab
Sunday, May 17,2026Michael Arroyo [Arkansas-AA] ... IL-7 Arkansas Travelers placed SS Michael Arroyo on the 7-day injured list
Colt Emerson [MLB] ... Recalled from from Tacoma Rainiers (Rk)
Thursday, May 14,2026Matt Brash [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA) for rehab
Josh Simpson [Tacoma-AAA] ... Assigned to Tacoma Rainiers (AAA)
Jose Suarez [MLB] ... Traded from Mariners to Athletics
Wednesday, May 13,2026Tuesday, May 12,2026Connor Charping [ACL Mariners-Rk] ... Assigned to ACL Mariners (Rk) for rehab
Axel Sanchez [Everett-A+] ... Assigned to Everett AquaSox (A+)
Gabriel Sosa [Everett-A+] ... Placed on temporarily inactive list
Monday, May 11,2026Saturday, May 9,2026Scott Rouse [Inland Empire-A] ... Assigned to Inland Empire 66ers (A)
Rhylan Thomas [Sugar Land-AAA] ... Assigned to Sugar Land Space Cowboys (AAA)
Rhylan Thomas [MLB] ... Claimed off waivers from Seattle Mariners by Houston Astros
Friday, May 8,2026Jo Oyama [ACL Mariners-Rk] ... Assigned to ACL Mariners (Rk)
Thursday, May 7,2026German Fajardo [Inland Empire-A] ... IL-7 Inland Empire 66ers placed RHP German Fajardo on the 7-day injured list
Sam Whiting [Everett-A+] ... Assigned to Everett AquaSox (A+)