| | | Sunday, August 11th, 1912 | | Signed Gene Packard to a minor league contract with a signing bonus of $4,500. |
| Thursday, August 8th, 1912 | | Signed Stanley Ackerman to a minor league contract with a signing bonus of $240. |
| Tuesday, August 6th, 1912 | | Signed Si-xun Lo to a minor league contract with a signing bonus of $180. |
| Monday, August 5th, 1912 | | Signed Bill Sullivan to a minor league contract with a signing bonus of $880. |
| Sunday, August 4th, 1912 | | Signed William Fischer to a minor league contract with a signing bonus of $270. |
| Saturday, August 3rd, 1912 | | Signed Pete Williams to a minor league contract with a signing bonus of $430. |
| Tuesday, July 30th, 1912 | | Signed Jack Brodeur to a minor league contract with a signing bonus of $650. |
| Monday, July 29th, 1912 | | Signed Frank Miller to a minor league contract with a signing bonus of $1,970. | | Signed Gunnar Pryor to a minor league contract with a signing bonus of $290. |
| Saturday, June 15th, 1912 | | Drafted SP Gene Packard in the 1912 first-year player draft (Round 1, Pick 14, 14th overall pick). | | Drafted SP Ken Shaw in the 1912 first-year player draft (Round 1, Pick 15, 15th overall pick). | | Drafted SP Jack Brodeur in the 1912 first-year player draft (Round 2, Pick 13, 50th overall pick). | | Drafted SP Frank Miller in the 1912 first-year player draft (Round 2, Pick 17, 54th overall pick). | | Drafted SP Gunnar Pryor in the 1912 first-year player draft (Round 3, Pick 12, 75th overall pick). | | Drafted SP Bill Sullivan in the 1912 first-year player draft (Round 3, Pick 13, 76th overall pick). | | Drafted C William Fischer in the 1912 first-year player draft (Round 4, Pick 11, 96th overall pick). | | Drafted SP Pete Williams in the 1912 first-year player draft (Round 4, Pick 14, 99th overall pick). | | Drafted SP Si-xun Lo in the 1912 first-year player draft (Round 5, Pick 12, 119th overall pick). | | Drafted SP Stanley Ackerman in the 1912 first-year player draft (Round 5, Pick 13, 120th overall pick). | | Drafted SP Chad Mueller in the 1912 first-year player draft (Round 6, Pick 9, 140th overall pick). | | Drafted SP Shi-lin Liu in the 1912 first-year player draft (Round 7, Pick 9, 156th overall pick). | | Drafted SP Dexter Bailey in the 1912 first-year player draft (Round 8, Pick 9, 172nd overall pick). | | Drafted SP Tatsuya Eida in the 1912 first-year player draft (Round 9, Pick 9, 188th overall pick). | | Drafted SP Philip Thompson in the 1912 first-year player draft (Round 10, Pick 9, 204th overall pick). | | Drafted MR Arturo Casillas in the 1912 first-year player draft (Round 11, Pick 9, 220th overall pick). | | Drafted MR Tsurayaki Miyamoto in the 1912 first-year player draft (Round 12, Pick 9, 236th overall pick). | | Drafted MR Carlos Rodríguez in the 1912 first-year player draft (Round 13, Pick 9, 252nd overall pick). | | Drafted MR Dusty Penick in the 1912 first-year player draft (Round 14, Pick 9, 268th overall pick). | | Drafted CL Samad Nizharadze in the 1912 first-year player draft (Round 15, Pick 9, 284th overall pick). | | Drafted MR Pancho Rosales in the 1912 first-year player draft (Round 16, Pick 9, 300th overall pick). | | Drafted MR Henry Taylor in the 1912 first-year player draft (Round 17, Pick 9, 316th overall pick). | | Drafted MR Kevin Walls in the 1912 first-year player draft (Round 18, Pick 9, 332nd overall pick). | | Drafted MR Kiyonobu Sakurai in the 1912 first-year player draft (Round 19, Pick 9, 348th overall pick). | | Drafted CF Norm Davis in the 1912 first-year player draft (Round 20, Pick 9, 364th overall pick). | | Drafted CF Jim Sanders in the 1912 first-year player draft (Round 21, Pick 9, 380th overall pick). | | Drafted 2B John Samson in the 1912 first-year player draft (Round 22, Pick 9, 396th overall pick). | | Drafted 2B Yoson Inoue in the 1912 first-year player draft (Round 23, Pick 9, 412nd overall pick). | | Drafted LF Wes Stevens in the 1912 first-year player draft (Round 24, Pick 9, 428th overall pick). | | Drafted 3B Takuya Ota in the 1912 first-year player draft (Round 25, Pick 9, 444th overall pick). |
| Thursday, November 16th, 1911 | | CL Frank Browning received a 1-year contract through automatic renewal worth a total of $990. | | MR Carl Druhot received a 1-year contract through automatic renewal worth a total of $1,020. | | SP Roy Hitt received a 1-year contract through automatic renewal worth a total of $990. | | 1B George Stovall becomes a free-agent. | | MR John Lovett becomes a free-agent. | | MR Ed Hawk received a 1-year contract through automatic renewal worth a total of $990. | | RF Larry Schlafly becomes a free-agent. | | SP Bob Groom received a 1-year contract through automatic renewal worth a total of $990. | | SP Al Kellogg received a 1-year contract through automatic renewal worth a total of $990. | | MR Lew Moren received a 1-year contract through automatic renewal worth a total of $990. | | SS Forrest Crawford becomes a free-agent. | | C Harry Huston becomes a free-agent. |
| Wednesday, November 15th, 1911 | | Signed 2B Rube Oldring to a 3-year contract extension worth a total of $12,420. | | Signed SP Bill Hogg to a 3-year contract extension worth a total of $34,500. | | Signed SP Joe Harris to a 3-year contract extension worth a total of $11,385. |
| Monday, November 13th, 1911 | | SP Cy Barger received a 1-year contract through arbitration worth a total of $1,602. | | 3B Jap Barbeau received a 1-year contract through arbitration worth a total of $1,250. | | LF Bob Bescher received a 1-year contract through arbitration worth a total of $1,452. | | 3B Frank LaPorte received a 1-year contract through arbitration worth a total of $21,000. | | CF Fred Beck received a 1-year contract through arbitration worth a total of $1,250. | | 2B Baldy Louden received a 1-year contract through arbitration worth a total of $1,666. | | 3B Otto Knabe received a 1-year contract through arbitration worth a total of $1,800. | | RF Gavvy Cravath received a 1-year contract through arbitration worth a total of $2,400. | | MR Irv Higginbotham received a 1-year contract through arbitration worth a total of $1,666. |
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