| | | Tuesday, July 23rd, 1912 | | Signed Harry Harper to a minor league contract with a signing bonus of $1,500. |
| Sunday, July 14th, 1912 | | Placed CF Dutch Zwilling on the 15-day disabled list. |
| Thursday, July 4th, 1912 | | Signed Pedro Muñóz to a minor league contract with a signing bonus of $1,220. |
| Wednesday, July 3rd, 1912 | | Signed Jim Bagby to a minor league contract with a signing bonus of $290. |
| Monday, July 1st, 1912 | | Signed Al Mamaux to a minor league contract with a signing bonus of $230. |
| Saturday, June 29th, 1912 | | Signed 1st round draft pick Wally Schang for a signing bonus of $1,457 and a 3-year major league contract worth a total of $4,998. |
| Tuesday, June 25th, 1912 | | Signed Milt Stock to a minor league contract with a signing bonus of $510. |
| Monday, June 24th, 1912 | | Signed Paul Lindholm to a minor league contract with a signing bonus of $180. |
| Wednesday, May 1st, 1912 | | Signed SP Chief Bender to a 2-year contract extension worth a total of $42,718. |
| Wednesday, April 24th, 1912 | | Signed 2B Larry Doyle to a 1-year contract extension worth a total of $15,000. |
| Saturday, April 6th, 1912 | | Signed 1B Alan Storke to a 2-year contract extension worth a total of $5,000. |
| Wednesday, April 3rd, 1912 | | Signed 3B Bill McKechnie to a 3-year contract extension worth a total of $9,000. |
| Thursday, November 16th, 1911 | | MR Jeff Pfeffer received a 1-year contract through automatic renewal worth a total of $833. | | MR George Hunter received a 1-year contract through automatic renewal worth a total of $990. | | MR Louis Leroy received a 1-year contract through automatic renewal worth a total of $833. | | MR Harley Young received a 1-year contract through automatic renewal worth a total of $990. | | RF Amadeo Vázquez received a 1-year contract through automatic renewal worth a total of $833. | | 3B Jimmy Johnston received a 1-year contract through automatic renewal worth a total of $833. | | MR Lou Schettler received a 1-year contract through automatic renewal worth a total of $990. | | 1B Vic Saier received a 1-year contract through automatic renewal worth a total of $833. | | C Tex Erwin received a 1-year contract through automatic renewal worth a total of $833. | | CF Dutch Zwilling received a 1-year contract through automatic renewal worth a total of $990. |
| Tuesday, November 14th, 1911 | | Placed 2B Larry Doyle on the active roster. | | Activated 2B Larry Doyle from the 60-day disabled list. |
| Monday, November 13th, 1911 | | 3B Tillie Shafer received a 1-year contract through arbitration worth a total of $1,316. | | 1B Alan Storke received a 1-year contract through arbitration worth a total of $1,666. | | SP Herm Malloy received a 1-year contract through arbitration worth a total of $1,250. | | 2B Larry Doyle received a 1-year contract through arbitration worth a total of $10,500. | | SP Rube Marquard received a 1-year contract through arbitration worth a total of $1,250. | | SP Hippo Vaughn received a 1-year contract through arbitration worth a total of $2,048. | | 3B Bill McKechnie received a 1-year contract through arbitration worth a total of $2,000. | | C Tommy Clarke received a 1-year contract through arbitration worth a total of $1,250. | | LF Harry Hooper received a 1-year contract through arbitration worth a total of $1,572. | | C Boss Schmidt received a 1-year contract through arbitration worth a total of $1,700. | | CF Joe Birmingham received a 1-year contract through arbitration worth a total of $1,666. |
|
|
