2026 Seattle Mariners Trades and Transactions

Transactions listed are from October 1 of previous year to April 1 of the following year.

• November 2, 2025

  Caleb Ferguson granted Free Agency.

  Luke Jackson granted Free Agency.

  Josh Naylor granted Free Agency.

  Eugenio Suárez granted Free Agency.

• November 3, 2025

  Mitch Garver granted Free Agency.

• November 5, 2025

  Jorge Polanco granted Free Agency.

  Purchased Cole Wilcox from the Tampa Bay Rays.

• November 6, 2025

  Nick Anderson granted Free Agency.

  Hagen Danner granted Free Agency.

  Josh Fleming granted Free Agency.

  Michael Fulmer granted Free Agency.

  Jesse Hahn granted Free Agency.

  Casey Lawrence granted Free Agency.

  Jack López granted Free Agency.

  Michael Mariot granted Free Agency.

  Cade Marlowe granted Free Agency.

  Jacob Nottingham granted Free Agency.

  Austin Shenton granted Free Agency.

  Collin Snider granted Free Agency.

  Beau Taylor granted Free Agency.

  Selected Ryan Loutos off waivers from the Washington Nationals.

• November 16, 2025

  Traded Tyler Gough (minors) to the Los Angeles Dodgers. Received Robinson Ortiz (minors).

• November 17, 2025

  Signed Randy Dobnak as a free agent.

  Signed Josh Naylor as a free agent.

• November 18, 2025

  Traded Luke Heyman (minors) to the Boston Red Sox. Received Alex Hoppe.

• November 20, 2025

  Tayler Saucedo granted Free Agency.

• November 21, 2025

  Gregory Santos granted Free Agency.

  Trent Thornton granted Free Agency.

• November 26, 2025

  Signed Casey Lawrence as a free agent.

• December 6, 2025

  Traded Isaac Lyon (minors) and Harry Ford to the Washington Nationals. Received Jose A. Ferrer.

• December 16, 2025

  Signed Andrew Knizner as a free agent.

• December 22, 2025

  Signed Rob Refsnyder as a free agent.

• January 8, 2026

  Signed Michael Rucker as a free agent.

• January 15, 2026

  Traded Dusty Revis (minors) to the Cincinnati Reds. Received Yosver Zulueta.

• January 20, 2026

  Signed Patrick Wisdom as a free agent.

• January 22, 2026

  Signed Dane Dunning as a free agent.

• January 23, 2026

  Purchased Cooper Criswell from the New York Mets.

• January 24, 2026

  Signed Jakson Reetz as a free agent.

• January 25, 2026

  Samad Taylor granted Free Agency.

• January 26, 2026

  Signed Will Wilson as a free agent.

• January 27, 2026

  Purchased Jhonny Pereda from the Minnesota Twins.

• January 29, 2026

  Jhonathan Díaz granted Free Agency.

• January 30, 2026

  Signed Brian O'Keefe as a free agent.

• February 2, 2026

  As part of a 3-team trade, traded Ben Williamson to the Tampa Bay Rays and Jurrangelo Cijntje (minors), Tai Peete (minors) and draft pick to the St. Louis Cardinals. Received Brendan Donovan from the St. Louis Cardinals. In addition, the Tampa Bay Rays sent Colton Ledbetter (minors) and draft pick to the St. Louis Cardinals.

• February 3, 2026

  Jackson Kowar selected by the Minnesota Twins off waivers.

• February 9, 2026

  Signed Jhonathan Díaz as a free agent.

• February 13, 2026

  Signed Connor Joe as a free agent.

• February 16, 2026

  Purchased Josh Simpson from the Miami Marlins.

• February 21, 2026

  Signed Alejo Lopez as a free agent.

  Signed Brendan White as a free agent.

• February 26, 2026

  Signed Mitch Garver as a free agent.

• March 1, 2026

  Signed Jacob Nottingham as a free agent.

• March 20, 2026

  Released Guillo Zuñiga.

• March 25, 2026

  Released Andrew Knizner.

• April 2, 2026

  Released Ryan Loutos.

• April 7, 2026

  Signed Ryan Loutos as a free agent.

• April 21, 2026

  Blas Castano selected by the Colorado Rockies off waivers.

• April 24, 2026

  Traded Casey Legumina to the Tampa Bay Rays. Received Ty Cummings (minors).

• May 3, 2026

  Selected José Suarez off waivers from the Atlanta Braves.

• May 9, 2026

  Rhylan Thomas selected by the Houston Astros off waivers.

• May 14, 2026

  José Suarez player rights sold to the Athletics.

• May 28, 2026

  Released Brendan White.