| | | Wednesday, September 23rd, 2015 | | Placed 2B Pat White on the active roster. | | Activated 2B Pat White from the disabled list. |
| Thursday, July 2nd, 2015 | | Signed Ambrosio Chama to a minor league contract with a signing bonus of $320,000. |
| Tuesday, June 30th, 2015 | | Signed Jesús Rosalindo to a minor league contract with a signing bonus of $2,180,000. |
| Saturday, June 27th, 2015 | | Signed Peter Walden to a minor league contract with a signing bonus of $530,000. |
| Monday, June 15th, 2015 | | Placed MR Jerry Cummings on the 60-day disabled list. |
| Sunday, May 31st, 2015 | | Signed LF Gerardo López to a 2-year contract extension worth a total of $4,400,000. |
| Monday, March 9th, 2015 | | Placed CF Yasukazu Hirose on the 15-day disabled list. | | Placed 2B Pat White on the 15-day disabled list. |
| Saturday, January 31st, 2015 | | Signed free agent CF Yasukazu Hirose to a 3-year contract worth a total of $8,280,000. |
| Monday, December 15th, 2014 | | Placed MR John Dawson on the active roster. |
| Sunday, December 14th, 2014 | | Signed free agent MR John Dawson to a 2-year contract worth a total of $2,720,000. |
| Saturday, December 6th, 2014 | | Signed free agent CF Anthony Tillman to a 2-year contract worth a total of $2,360,000. |
| Sunday, November 30th, 2014 | | Signed CL Pierce Furlong to a 3-year contract extension worth a total of $11,430,000. |
| Tuesday, November 18th, 2014 | | MR Bob Mitchell received a 1-year contract through automatic renewal worth a total of $400,000. | | CF Wilson McCarley received a 1-year contract through automatic renewal worth a total of $400,000. | | MR Jesús Martínez received a 1-year contract through automatic renewal worth a total of $400,000. | | C Javier Jacome received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Will Carson received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Donnie Sanders received a 1-year contract through automatic renewal worth a total of $400,000. | | 2B José Sandoval received a 1-year contract through automatic renewal worth a total of $400,000. | | SP Travis Martin received a 1-year contract through automatic renewal worth a total of $400,000. | | RF Fernando Franco received a 1-year contract through automatic renewal worth a total of $400,000. | | CL Willie Kelley received a 1-year contract through automatic renewal worth a total of $400,000. | | Placed MR Michael Vaughan on the active roster. | | Activated MR Michael Vaughan from the 60-day disabled list. |
| Saturday, November 15th, 2014 | | MR Michael Vaughan received a 1-year contract through arbitration worth a total of $600,000. | | C Tu-chin Kim received a 1-year contract through arbitration worth a total of $1,500,000. | | MR Gilbert Riddle received a 1-year contract through arbitration worth a total of $600,000. | | MR Raymond Earle received a 1-year contract through arbitration worth a total of $600,000. | | 3B Gerardo López received a 1-year contract through arbitration worth a total of $2,028,000. | | DH Mike Funk becomes a free-agent. | | 3B Alfonso Miranda received a 1-year contract through arbitration worth a total of $950,000. | | MR Randy Walters received a 1-year contract through arbitration worth a total of $600,000. |
| Thursday, October 30th, 2014 | | Signed 2B Pat White to a 3-year contract extension worth a total of $21,000,000. |
| Wednesday, October 29th, 2014 | | Signed scouting director John Rowe to a 4-year, $180,000 per year contract. |
| Saturday, October 25th, 2014 | | Scouting Director José Sánchez leaves the team, his contract was not renewed. |
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