January 13, 2018
Joe Musgrove
traded from
Astros 
to
Pirates
Jason Martin
traded from
Astros
to
Pirates
Michael Feliz
traded from
Astros
to
Pirates
Colin Moran
traded from
Astros
to
Pirates
Gerrit Cole
traded from
Pirates
to
Astros
March 29, 2018
Astros
place
James Hoyt
on the injured list
Astros
place
Jandel Gustave
on the injured list
April 03, 2018
Astros
place
Yuli Gurriel
on the injured list
May 23, 2018
Astros
place
Josh Reddick
on the injured list
June 10, 2018
Astros
place
Joe Smith
on the injured list
June 13, 2018
Astros
sign
Jeremy Pena
Astros
sign
David Hensley
June 29, 2018
Astros
place
Carlos Correa
on the injured list
July 06, 2018
James Hoyt
traded from
Astros
to
Indians
July 26, 2018
Martin Maldonado
traded from
Angels
to
Astros
Patrick Sandoval
traded from
Astros
to
Angels
July 27, 2018
Ryan Pressly
traded from
Twins
to
Astros
Jorge Alcala
traded from
Astros
to
Twins
Gilberto Celestino
traded from
Astros
to
Twins
July 29, 2018
Astros
place
Jose Altuve
on the injured list
July 30, 2018
August 03, 2018
Astros
place
Chris Devenski
on the injured list
August 05, 2018
Astros
place
Lance McCullers
on the injured list
August 06, 2018
Astros
place
George Springer
on the injured list
August 11, 2018
Astros
place
Jake Marisnick
on the injured list
August 29, 2018
Astros
place
Charlie Morton
on the injured list
October 29, 2018
Charlie Morton
became a free agent
Martin Maldonado
became a free agent
Dallas Keuchel
became a free agent
Marwin Gonzalez
became a free agent
October 30, 2018
Jandel Gustave
became a free agent
November 17, 2018
Trent Thornton
traded from
Astros
to
Blue Jays
Aledmys Diaz
traded from
Blue Jays
to
Astros
December 06, 2018
Astros
sign
Robinson Chirinos
as a free agent
December 19, 2018
Astros
sign
Michael Brantley
as a free agent