| | | Monday, September 28th, 2015 | | Signed SS Tse-tung Wong to a 3-year contract extension worth a total of $3,900,000. |
| Sunday, September 27th, 2015 | | Signed RF Trey McDougall to a 3-year contract extension worth a total of $11,400,000. |
| Tuesday, September 15th, 2015 | | Placed LF Craig Olsen on the 15-day disabled list. |
| Wednesday, July 8th, 2015 | | Signed 1B Nathan Downing to a 3-year contract extension worth a total of $22,500,000. |
| Wednesday, June 17th, 2015 | | Signed José Tejeda to a minor league contract with a signing bonus of $1,440,000. |
| Tuesday, April 14th, 2015 | | 2B David Christensen was designated for assignment and placed on waivers. | | Placed CF Dave Matos on the active roster. | | Activated CF Dave Matos from the disabled list. |
| Tuesday, March 17th, 2015 | | Signed SP Jesús Torres to a 2-year contract extension worth a total of $7,400,000. |
| Monday, March 16th, 2015 | | Placed CF Dave Matos on the 15-day disabled list. |
| Monday, December 29th, 2014 | | Signed free agent 2B Pedro Aragón to a 1-year contract worth a total of $750,000. | | Placed 2B Pedro Aragón on the active roster. |
| Saturday, December 27th, 2014 | | Signed LF Dave Matos to a 3-year contract extension worth a total of $24,000,000. | | Signed SP Bob Adams to a 3-year contract extension worth a total of $22,500,000. |
| Wednesday, December 24th, 2014 | | Signed C José Rivas to a 3-year contract extension worth a total of $12,000,000. | | Signed Scouting Director Juan Gómez to a 5-year contract extension. |
| Tuesday, December 23rd, 2014 | | Signed CF Richard Lee to a 3-year contract extension worth a total of $2,400,000. |
| Tuesday, November 18th, 2014 | | 2B Miguel Rodríguez received a 1-year contract through automatic renewal worth a total of $400,000. | | SS Tse-tung Wong received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Jonathan Smith received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Trey McDougall received a 1-year contract through automatic renewal worth a total of $400,000. | | SS Enrique Reyes received a 1-year contract through automatic renewal worth a total of $400,000. | | 1B Alberto Juárez becomes a free-agent. | | 3B Connor Moss received a 1-year contract through automatic renewal worth a total of $400,000. | | 1B Nathan Downing received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Tom Smith received a 1-year contract through automatic renewal worth a total of $400,000. |
| Saturday, November 15th, 2014 | | 2B Zach Tyler received a 1-year contract through arbitration worth a total of $4,400,000. | | SP Joe Wallace received a 1-year contract through arbitration worth a total of $3,000,000. | | MR Pierre Payette received a 1-year contract through arbitration worth a total of $600,000. | | SP Bob Adams received a 1-year contract through arbitration worth a total of $3,008,000. | | 1B Phil Goodenough becomes a free-agent. | | RF Dave Abbott becomes a free-agent. | | CF Richard Lee received a 1-year contract through arbitration worth a total of $625,000. | | LF Dave Matos received a 1-year contract through arbitration worth a total of $6,500,000. | | 2B David Christensen received a 1-year contract through arbitration worth a total of $600,000. | | C José Rivas received a 1-year contract through arbitration worth a total of $2,261,000. | | CL Daron Ward received a 1-year contract through arbitration worth a total of $600,000. |
| Saturday, October 25th, 2014 | | MR Christian Cole has executed his last optional contract year. |
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