January 21, 2019

January 30, 2019

Reds  sign Ian Krol

February 23, 2019

Reds  sign Jose Iglesias

March 21, 2019

Connor Joe traded from Reds  to Giants 

March 28, 2019

Reds  place Alex Wood on the injured list

Reds  place Alex Blandino on the injured list

Reds  designate Matt Wisler for assignment

Reds  sign Anthony Bass

April 01, 2019

Matt Wisler traded from Reds  to Padres 

April 07, 2019

Rob Refsnyder traded from Diamondbacks  to Reds 

May 31, 2019

Reds  place Robert Stephenson on the injured list

June 01, 2019

Reds  sign Eric Stout

June 10, 2019

Reds  sign Graham Ashcraft

June 11, 2019

Reds  sign Nick Lodolo

June 15, 2019

Reds  place Wandy Peralta on the injured list

June 28, 2019

Reds  place Tucker Barnhart on the injured list

July 04, 2019

Reds  place Amir Garrett on the injured list

July 10, 2019

Reds  sign Nick Ciuffo

July 17, 2019

Justin Grimm traded from Dodgers  to Reds 

July 18, 2019

Reds  place Kyle Farmer on the injured list

Reds  place Curt Casali on the injured list

Reds  sign Ryan Lavarnway as a free agent

July 22, 2019

Reds  place Tyler Mahle on the injured list

July 26, 2019

Reds  place Kyle Farmer on the injured list

July 28, 2019

Reds  designate Ryan Lavarnway for assignment

July 31, 2019

Tanner Roark traded from Reds  to Athletics 

August 06, 2019

Reds  sign Brad Boxberger

August 09, 2019

Joe Mantiply traded from Reds  to Yankees 

August 18, 2019

Reds  place Joey Votto on the injured list

August 22, 2019

Reds  place Jesse Winker on the injured list

September 04, 2019

Reds  place Kyle Farmer on the injured list

October 31, 2019

Travis Jankowski traded from Padres  to Reds 

Alex Wood became a free agent

Jose Iglesias became a free agent

November 20, 2019

Jose De Leon traded from Rays  to Reds 

November 25, 2019

Reds  designate Jimmy Herget for assignment

Reds  designate Brian O'Grady for assignment

November 27, 2019

Brian O'Grady traded from Reds  to Rays 

December 02, 2019

Jose Peraza became a free agent

Kevin Gausman became a free agent

December 05, 2019

Reds  sign Mike Moustakas as a free agent

December 18, 2019

Reds  sign Wade Miley as a free agent

December 30, 2019

Reds  sign Tyler Thornburg