Seattle Mariners Transactions 2026

March
DATETRANSACTION
9 March 2026Agreed to terms with RHPs Eduard Bazardo, Blas Castaño, Logan Evans, Domingo González, Emerson Hancock, Alex Hoppe, Casey Legumina, Ryan Loutos, Troy Taylor, Carlos Vargas, Cole Wilcox, Yosver Zulueta and Bryan Woo, LHPs José A. Ferrer, Robinson Ortiz and Josh Simpson, INFs Ryan Bliss, Leo Rivas and Cole Young, OFs Dominic Canzone and Rhylan Thomas, INF/OF Miles Mastrobuoni and C Jhonny Pereda on one-year contracts.
8 March 2026Optioned RHP Ryan Loutos to Tacoma (PCL).
February
DATETRANSACTION
25 February 2026Agreed to terms with C Mitch Garver on a contract.
16 February 2026Traded cash to Miami Marlins for LHP Josh Simpson.
13 February 2026Agreed to terms with Cs Daniel Alana and C Santiago Pereira, RHPs Cristian Alvarado, German Arvayo, Gabriel Hidalgo, Carlos Martinez and Adan Vallenilla and UTLs Fabian Gonzalez and Edgardo Toro on minor league contracts.
2 February 2026Acquired Inf/OF Brendan Donavon from St. Lous for RHP Jurrangelo Cijntle, OF Tai Peete and a 2026 Competitive Balance Round B draft pick.
January
DATETRANSACTION
30 January 2026Agreed to terms with C Brian O’Keefe on a minor league contract.
27 January 2026Acquired C Jhonny Pereda from Minnesota in exchange for cash considerations. Designated RHP Jackson Kowar for assignment.
23 January 2026Acquired RHP Cooper Criswell from the New York Mets in exchange for cash considerations. Designated LHP Jhonathan Díaz for assignment.
22 January 2026Sent 2B Samad Taylor outright to Tacoma (PCL).
20 January 2026Agreed to terms with RHP Bryce Miller on a one-year contract.
15 January 2026Acquired RHP Yosver Zulueta from Cincinnati in exchange for RHP Dusty Revis. Designated INF/OF Samad Taylor for assignment. Agreed to terms with OFs Juan Rijo, Gregory Pio, Ambeiro Recio and Jarvis Gomez, SS Leonardo Reynoso and C Daniel Alaña on minor league contracts.
8 January 2026Agreed to terms with RHPs Matt Brash, Logan Gilbert and George Kirby, LHP Gabe Speier, OF Randy Arozarena and INF/OF Luke Raley on one-year contracts.