| | | Tuesday, October 1st, 2013 | | Signed MR Willie Patterson to a 4-year contract extension worth a total of $14,280,000. |
| Friday, September 27th, 2013 | | Placed SP Pepe López on the 14-day disabled list, retroactive to 09/25/2013. | | Purchased the contract of MR Bob Hardin from Triple A Billings. |
| Tuesday, July 30th, 2013 | | Signed SS Ed Denton to a 3-year contract extension worth a total of $7,500,000. | | Signed SP John Holt to a 2-year contract extension worth a total of $2,600,000. |
| Wednesday, May 15th, 2013 | | Signed LF Dennis Crawford to a 5-year contract extension worth a total of $12,350,000. |
| Monday, January 21st, 2013 | | Signed MR William Gill to a 4-year contract extension worth a total of $19,680,000. |
| Tuesday, January 15th, 2013 | | 2B Sylvain Champion was claimed off waivers from Eureka. | | Signed Takanibu Kobayashi to a minor league contract with a signing bonus of $1,370,000. | | Signed Qi-chao Ya to a minor league contract with a signing bonus of $220,000. |
| Thursday, January 10th, 2013 | | Signed Hideyori Kiyomizu to a minor league contract with a signing bonus of $1,020,000. |
| Wednesday, January 9th, 2013 | | Signed Mathieu Bodin to a minor league contract with a signing bonus of $1,030,000. |
| Wednesday, January 2nd, 2013 | | Signed Mitsuzuka Kobayashi to a minor league contract with a signing bonus of $320,000. |
| Saturday, December 15th, 2012 | | Placed CF Dave Carlisle on the active roster. | | Activated CF Dave Carlisle from the 60-day disabled list. |
| Saturday, December 8th, 2012 | | Signed free agent SP Pepe López to a 4-year contract worth a total of $16,000,000. |
| Thursday, December 6th, 2012 | | Signed free agent MR Bob Hardin to a 2-year contract worth a total of $1,880,000. |
| Tuesday, November 27th, 2012 | | Signed SP Charles Luce to a 4-year contract extension worth a total of $28,800,000. |
| Friday, November 23rd, 2012 | | Signed 1B Dan Smith to a 5-year contract extension worth a total of $57,360,000. |
| Wednesday, November 21st, 2012 | | SP Stephen Lawrence received a 1-year contract through automatic renewal worth a total of $510,000. | | SP Edward Griffith received a 1-year contract through automatic renewal worth a total of $500,000. | | C John Robertson received a 1-year contract through automatic renewal worth a total of $510,000. | | SS Bret Garrison received a 1-year contract through automatic renewal worth a total of $510,000. | | 2B Domingo Blanchard received a 1-year contract through automatic renewal worth a total of $500,000. | | MR Juan Velázquez becomes a free-agent. | | RF Derek Tyler received a 1-year contract through automatic renewal worth a total of $500,000. |
| Sunday, November 18th, 2012 | | 1B Dan Smith received a 1-year contract through arbitration worth a total of $8,125,000. | | MR Derek Sears received a 1-year contract through arbitration worth a total of $750,000. | | CL Gregory Erwin received a 1-year contract through arbitration worth a total of $5,953,750. | | MR Willie Patterson received a 1-year contract through arbitration worth a total of $2,640,000. | | LF Dennis Crawford received a 1-year contract through arbitration worth a total of $1,800,000. | | CF Mark Bennett received a 1-year contract through arbitration worth a total of $750,000. | | MR Bob Hardin becomes a free-agent. | | RF Miguel Torres received a 1-year contract through arbitration worth a total of $5,280,000. |
| Wednesday, November 7th, 2012 | | Signed 2B Chris Cook to a 3-year contract extension worth a total of $3,150,000. |
| Friday, November 2nd, 2012 | | Signed hitting coach Jack O'Callahan to a 5-year, $420,000 per year contract. |
| Wednesday, October 31st, 2012 | | Placed RF Max Abrams on the active roster. | | Activated RF Max Abrams from the disabled list. |
| Sunday, October 28th, 2012 | | RF Bill Lee retires. | | Hitting Coach Ed Taylor leaves the team, his contract was not renewed. |
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