January 14, 2015

January 19, 2015

Dexter Fowler traded from Astros  to Cubs 

January 21, 2015

Akeem Bostick traded from Rangers  to Astros 

March 09, 2015

Astros  sign Jose Urquidy

Astros  sign Robert Stock

March 19, 2015

Astros  sign Cristian Javier

Astros  sign Framber Valdez

April 01, 2015

Astros  place Brad Peacock on the injured list

April 17, 2015

Astros  place Brad Peacock on the injured list

April 28, 2015

Astros  place Jed Lowrie on the injured list

May 06, 2015

Astros  place George Springer on the injured list

May 07, 2015

Astros  designate Ronald Torreyes for assignment

May 15, 2015

Ronald Torreyes traded from Astros  to Blue Jays 

June 15, 2015

Astros  sign Kyle Tucker

June 16, 2015

Astros  sign Trent Thornton

June 18, 2015

Astros  sign Garrett Stubbs

Astros  sign Ralph Garza Jr.

June 19, 2015

Astros  place Jake Marisnick on the injured list

Astros  sign Myles Straw

June 25, 2015

Astros  sign Alex Bregman

June 30, 2015

Astros  sign Daz Cameron

July 01, 2015

Astros  sign Thomas Eshelman

July 02, 2015

Astros  place George Springer on the injured list

Astros  sign Gilberto Celestino

Astros  sign Humberto Castellanos

July 07, 2015

Astros  sign Patrick Sandoval

July 23, 2015

July 30, 2015

August 08, 2015

Oliver Perez traded from Diamondbacks  to Astros 

August 29, 2015

Astros  place Jason Castro on the injured list

November 02, 2015

Scott Kazmir became a free agent

Oliver Perez became a free agent

November 19, 2015

Jonathan Villar traded from Astros  to Brewers 

Astros  release Robbie Grossman

November 25, 2015

Jed Lowrie traded from Astros  to Athletics 

December 12, 2015