January 07, 2016

Mariners  release Anthony Bass

March 01, 2016

Mariners  sign Guillermo Heredia as a free agent

March 30, 2016

Nick Vincent traded from Padres  to Mariners 

April 03, 2016

Mariners  designate Rob Brantly for assignment

May 22, 2016

Mariners  place Ketel Marte on the injured list

May 29, 2016

Patrick Kivlehan traded from Rangers  to Mariners 

June 14, 2016

Mariners  sign Robert Dugger

Mariners  sign Matt Festa

Mariners  sign Kyle Lewis

Mariners  sign Donovan Walton

June 17, 2016

Mariners  place Wade Miley on the injured list

June 19, 2016

Chris Taylor traded from Mariners  to Dodgers 

June 22, 2016

Wade LeBlanc traded from Blue Jays  to Mariners 

June 24, 2016

Mariners  place Adrian Sampson on the injured list

June 29, 2016

Mariners  place Nick Vincent on the injured list

July 06, 2016

Mariners  place Taijuan Walker on the injured list

July 20, 2016

July 23, 2016

Mariners  place Ketel Marte on the injured list

July 31, 2016

Wade Miley traded from Mariners  to Orioles 

August 01, 2016

Mariners  designate Patrick Kivlehan for assignment

August 04, 2016

Mariners  place Steve Cishek on the injured list

August 06, 2016

Mariners  designate Blake Parker for assignment

August 16, 2016

Mariners  place James Paxton on the injured list

August 25, 2016

Mariners  designate Wade LeBlanc for assignment

August 31, 2016

Ben Gamel traded from Yankees  to Mariners 

September 01, 2016

Jake Brentz traded from Mariners  to Pirates 

September 13, 2016

Wade LeBlanc traded from Mariners  to Pirates 

September 30, 2016

Tim Lopes traded from Mariners  to Blue Jays 

November 12, 2016

Paul Blackburn traded from Mariners  to Athletics 

November 18, 2016

Zack Littell traded from Mariners  to Yankees 

Mariners  release Stefen Romero

November 23, 2016

November 28, 2016

Alex Jackson traded from Mariners  to Braves 

November 29, 2016

Mariners  designate Ryan Weber for assignment