| | | Sunday, July 21st, 1912 | | Signed Claude Cooper to a minor league contract with a signing bonus of $1,100. |
| Thursday, July 4th, 1912 | | Signed Carlos Hernández to a minor league contract with a signing bonus of $280. |
| Tuesday, July 2nd, 1912 | | Signed Lefty Williams to a minor league contract with a signing bonus of $270. | | Signed Slim Love to a minor league contract with a signing bonus of $180. |
| Wednesday, June 26th, 1912 | | Signed Benny Meyer to a minor league contract with a signing bonus of $590. |
| Sunday, June 16th, 1912 | | Signed Eddie Murphy to a minor league contract with a signing bonus of $1,330. |
| Saturday, June 15th, 1912 | | Demoted RF Art Thomason to Triple A Salisbury. | | Placed SP Burton Grant on the 40-man roster. | | Purchased the contract of SP Burton Grant from Triple A Salisbury. | | Drafted RF Eddie Murphy in the 1912 first-year player draft (Round 1, Pick 18, 18th overall pick). | | Drafted LF Claude Cooper in the 1912 first-year player draft (Supplemental Round 1, Pick 4, 29th overall pick). | | Drafted RF Benny Meyer in the 1912 first-year player draft (Round 2, Pick 16, 53rd overall pick). | | Drafted MR Lefty Williams in the 1912 first-year player draft (Round 3, Pick 16, 79th overall pick). | | Drafted SP Carlos Hernández in the 1912 first-year player draft (Round 4, Pick 16, 101st overall pick). | | Drafted MR Slim Love in the 1912 first-year player draft (Round 5, Pick 17, 124th overall pick). | | Drafted SP Cody Hammond in the 1912 first-year player draft (Round 6, Pick 11, 142nd overall pick). | | Drafted SP Justin Rhodes in the 1912 first-year player draft (Round 7, Pick 11, 158th overall pick). | | Drafted SP Félix Segura in the 1912 first-year player draft (Round 8, Pick 11, 174th overall pick). | | Drafted MR Hal Schwenk in the 1912 first-year player draft (Round 9, Pick 11, 190th overall pick). | | Drafted SP Holden Reynolds in the 1912 first-year player draft (Round 10, Pick 11, 206th overall pick). | | Drafted MR Chris Simpson in the 1912 first-year player draft (Round 11, Pick 11, 222nd overall pick). | | Drafted MR Gene Cocreham in the 1912 first-year player draft (Round 12, Pick 11, 238th overall pick). | | Drafted MR Keith Ivey in the 1912 first-year player draft (Round 13, Pick 11, 254th overall pick). | | Drafted MR Chris Marshall in the 1912 first-year player draft (Round 14, Pick 11, 270th overall pick). | | Drafted MR Russ Harris in the 1912 first-year player draft (Round 15, Pick 11, 286th overall pick). | | Drafted MR Rob Browning in the 1912 first-year player draft (Round 16, Pick 11, 302nd overall pick). | | Drafted MR Juan Delgado in the 1912 first-year player draft (Round 17, Pick 11, 318th overall pick). | | Drafted MR Joe Carmichael in the 1912 first-year player draft (Round 18, Pick 11, 334th overall pick). | | Drafted MR Gilbert Dryden in the 1912 first-year player draft (Round 19, Pick 11, 350th overall pick). | | Drafted SS Larry Kopf in the 1912 first-year player draft (Round 20, Pick 11, 366th overall pick). | | Drafted CF Gabriel Clarke in the 1912 first-year player draft (Round 21, Pick 11, 382nd overall pick). | | Drafted CF Menelik Kagai in the 1912 first-year player draft (Round 22, Pick 11, 398th overall pick). | | Drafted LF Denver Simon in the 1912 first-year player draft (Round 23, Pick 11, 414th overall pick). | | Drafted RF Dan Costello in the 1912 first-year player draft (Round 24, Pick 11, 430th overall pick). | | Drafted RF Kris Bower in the 1912 first-year player draft (Round 25, Pick 11, 446th overall pick). |
| Tuesday, April 30th, 1912 | | Signed SP Tom Hughes to a 3-year contract extension worth a total of $22,650. |
| Tuesday, March 26th, 1912 | | Placed C Bill Bergen on the 40-man roster. | | Placed C Bill Bergen on the active roster. |
| Monday, March 11th, 1912 | | Signed free agent C Bill Bergen to a 1-year contract worth a total of $1,460. |
| Thursday, November 16th, 1911 | | 3B Red Smith received a 1-year contract through automatic renewal worth a total of $990. | | C Bill Bergen becomes a free-agent. | | LF Jimmy Sheckard becomes a free-agent. | | SP Marty O'Toole received a 1-year contract through automatic renewal worth a total of $833. | | SP Bucky Veil becomes a free-agent. | | CF Ray Demmitt received a 1-year contract through automatic renewal worth a total of $990. | | LF Bert Daniels received a 1-year contract through automatic renewal worth a total of $990. | | RF Rubén López received a 1-year contract through automatic renewal worth a total of $833. | | SS John Kelleher received a 1-year contract through automatic renewal worth a total of $833. | | MR Rube Marshall received a 1-year contract through automatic renewal worth a total of $833. | | MR Lou Lowdermilk received a 1-year contract through automatic renewal worth a total of $833. | | MR Moxie Manuel becomes a free-agent. |
| Monday, November 13th, 1911 | | 3B Cozy Dolan becomes a free-agent. | | MR Fred Winchell becomes a free-agent. | | CF Steamer Flanagan received a 1-year contract through arbitration worth a total of $1,250. | | C Red Munson received a 1-year contract through arbitration worth a total of $1,270. | | LF Rube Ellis received a 1-year contract through arbitration worth a total of $1,250. | | C Branch Rickey becomes a free-agent. | | MR George Daly received a 1-year contract through arbitration worth a total of $1,250. |
| Tuesday, November 7th, 1911 | | Signed free agent C Fred Carisch to a 2-year contract worth a total of $2,680. |
| Monday, October 23rd, 1911 | | CL Ed Kenna has executed his last optional contract year. |
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