| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 5/1/1941 | BAL | Bildilli | Demoted to reserve roster |   |   | Before |
| 5/1/1941 | BAL | Carey | Demoted to reserve roster |   |   | Before |
| 5/1/1941 | BAL | Jungels | Demoted to reserve roster |   |   | Before |
| 5/1/1941 | BAL | Newlin | Demoted to reserve roster |   |   | Before |
| 5/1/1941 | BAL | Padgett | Demoted to reserve roster |   |   | Before |
| 5/1/1941 | BAL | Phelps | Demoted to reserve roster |   |   | Before |
| 5/1/1941 | BAL | Rich | Demoted to reserve roster |   |   | Before |
| 6/1/1941 | BAL | Myer | Demoted to reserve roster |   |   | Before |
| 6/1/1941 | BAL | Padgett | Promoted to active roster |   |   | Before |
| 6/1/1941 | SOU | Bruner | Promoted to active roster |   |   | Before |
| 6/1/1941 | SOU | Chapman F | Demoted to reserve roster |   |   | Before |
| 6/1/1941 | SOU | Collins E | Promoted to active roster |   |   | Before |
| 6/1/1941 | SOU | Cox | Promoted to active roster |   |   | Before |
| 6/1/1941 | SOU | Hughes | Demoted to reserve roster |   |   | Before |
| 6/1/1941 | SOU | Meyer | Demoted to reserve roster |   |   | Before |
| 6/1/1941 | SOU | Van Robays | Demoted to reserve roster |   |   | Before |
| 6/1/1941 | SOU | Wietelmann | Promoted to active roster |   |   | Before |
| 7/1/1941 | BAL | Hartnett | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | BAL | Phelps | Promoted to active roster |   |   | Before |
| 7/1/1941 | GOS | Demaree | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Hale | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Hudson J | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Hutchinson I | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Klinger | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Klinger | Promoted to active roster |   |   | Before |
| 7/1/1941 | GOS | Knott | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Knott | Promoted to active roster |   |   | Before |
| 7/1/1941 | GOS | Logan | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | MacFayden | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Montgomery | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Musial | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Musial | Promoted to active roster |   |   | Before |
| 7/1/1941 | GOS | Musial | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Olsen B | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Rosenthal | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | GOS | Smith V | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Baker | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Barna | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Davis Curt | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Davis Curt | Promoted to active roster |   |   | Before |
| 7/1/1941 | RIV | East | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Erickson P | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Erickson P | Promoted to active roster |   |   | Before |
| 7/1/1941 | RIV | Harman | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Humphries | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Klein | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Lohrman | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Manno | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Masterson P | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Mungo | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | O'Dea | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Riddle J | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | RIV | Waner P | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | SOU | Bruner | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | SOU | Chapman F | Promoted to active roster |   |   | Before |
| 7/1/1941 | SOU | Cox | Demoted to reserve roster |   |   | Before |
| 7/1/1941 | SOU | Hughes | Promoted to active roster |   |   | Before |
| 7/1/1941 | SOU | Meyer | Promoted to active roster |   |   | Before |
| 7/1/1941 | SOU | Wietelmann | Demoted to reserve roster |   |   | Before |
| 7/21/1941 | MAU | Averill | Demoted to reserve roster |   |   | Before |
| 7/21/1941 | MAU | Averill | Promoted to active roster |   |   | Before |
| 7/21/1941 | MAU | Fleming B | Demoted to reserve roster |   |   | Before |
| 7/21/1941 | MAU | Gaffke | Promoted to active roster |   |   | Before |
| 7/21/1941 | MAU | Hughson | Promoted to active roster |   |   | Before |
| 7/21/1941 | MAU | Ostermueller | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | BAL | Branch | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | BAL | Carey | Promoted to active roster |   |   | Before |
| 8/1/1941 | BAL | Hartnett | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | BAL | Jungels | Promoted to active roster |   |   | Before |
| 8/1/1941 | BAL | Lyons | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | BAL | Masi | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | BAL | Myer | Promoted to active roster |   |   | Before |
| 8/1/1941 | BAL | Nahem | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | BAL | Newlin | Promoted to active roster |   |   | Before |
| 8/1/1941 | BAL | Witek | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | MAU | Averill | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | MAU | Caligiuri | Promoted to active roster |   |   | Before |
| 8/1/1941 | MAU | Gaffke | Demoted to reserve roster |   |   | Before |
| 8/1/1941 | SOU | Dickman | Promoted to active roster |   |   | Before |
| 8/1/1941 | SOU | Peek | Demoted to reserve roster |   |   | Before |
| 8/28/1941 | MAU | Averill | Promoted to active roster |   |   | Before |
| 9/1/1941 | KCB | Busby | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Hash | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Hockett | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Jumonville | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Kimball | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Manders | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Merullo | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Miles | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | KCB | Werber | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | MAU | Caligiuri | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | MAU | Crabtree | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | MAU | Feldman | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | Fleming B | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | MAU | Fleming B | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | Gaffke | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | MAU | Gaffke | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | George | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | Leip | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | Ostermueller | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | Silvestri | Promoted to active roster |   |   | Before |
| 9/1/1941 | MAU | Young P | Promoted to active roster |   |   | Before |
| 9/1/1941 | SOU | Bauers | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | SOU | Cox | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | SOU | Peek | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | SOU | Rowe | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | SOU | Strincevich | Demoted to reserve roster |   |   | Before |
| 9/1/1941 | SOU | Tipton | Demoted to reserve roster |   |   | Before |
| 9/28/1941 | MAU | Caligiuri | Promoted to active roster |   |   | Before |
| 9/28/1941 | MAU | Crabtree | Promoted to active roster |   |   | Before |
| 9/28/1941 | MAU | Fleming B | Promoted to active roster |   |   | Before |
| 9/28/1941 | MAU | Gaffke | Promoted to active roster |   |   | Before |
| 9/28/1941 | MAU | Hughson | Demoted to reserve roster |   |   | Before |
| 11/30/2009 | BAL | Beck | Acquired via trade | WES |   | After |
| 11/30/2009 | BAL | Berardino | Acquired via trade | WES |   | After |
| 11/30/2009 | BAL | West M | Traded away | WES |   | After |
| 11/30/2009 | GOS | Bragan | Acquired via trade | ROC |   | After |
| 11/30/2009 | GOS | Carpenter | Traded away | ROC |   | After |
| 11/30/2009 | MAU | Jurges | Traded away | ROC |   | After |
| 11/30/2009 | RIV | Brown Jumbo | Traded away | HOO |   | After |
| 11/30/2009 | RIV | Fitzsimmons | Traded away | HOO |   | After |
| 11/30/2009 | RIV | Moore T | Traded away | WES |   | After |
| 11/30/2009 | ROC | Bragan | Traded away | GOS |   | After |
| 11/30/2009 | ROC | Carpenter | Acquired via trade | GOS |   | After |
| 11/30/2009 | ROC | DiMaggio V | Acquired via trade | CHI |   | After |
| 11/30/2009 | ROC | Greenberg | Traded away | CHI |   | After |
| 11/30/2009 | ROC | Jurges | Acquired via trade | MAU |   | After |
| 11/30/2009 | ROC | Ross B | Acquired via trade | CHI |   | After |
| 11/30/2009 | SOU | Wagner C | Traded away | BRK |   | After |
| 2/6/2010 | MAU | Harder | Traded away | WES |   | After |
| 2/6/2010 | MAU | Hughson | Acquired via trade | WES |   | After |
| 2/6/2010 | MAU | Murtaugh | Traded away | WES |   | After |
| 2/6/2010 | SOU | Brown Jimmy | Traded away | WOR |   | After |
| 2/6/2010 | SOU | Bruner | Acquired via trade | WES |   | After |
| 2/6/2010 | SOU | Dickey G | Traded away | WES |   | After |
| 2/6/2010 | SOU | Gehringer | Acquired via trade | WOR |   | After |
| 2/6/2010 | SOU | Giuliani | Acquired via trade | WES |   | After |
| 2/6/2010 | SOU | Vaughan A | Traded away | WOR |   | After |
| 2/7/2010 | BAL | Crabtree | Traded away | MAU |   | After |
| 2/7/2010 | BAL | Padgett | Acquired via trade | MAU |   | After |
| 2/7/2010 | MAU | Crabtree | Acquired via trade | BAL |   | After |
| 2/7/2010 | MAU | Padgett | Traded away | BAL |   | After |
| 2/21/2010 | MAU | Chase | Traded away | WES |   | After |
| 2/21/2010 | MAU | Garms | Traded away | WES |   | After |
| 2/21/2010 | MAU | Goodman | Acquired via trade | WES |   | After |
| 2/21/2010 | MAU | Lucadello | Acquired via trade | WES |   | After |
| 3/24/2010 | SOU | Bell | Traded away | WES |   | After |
| 3/24/2010 | SOU | Dickman | Acquired via trade | WES |   | After |
| 3/28/2010 | BAL | Beckmann | Traded away | SCH |   | After |
| 3/28/2010 | BAL | Riggs | Acquired via trade | SCH |   | After |
| 3/28/2010 | RIV | Davis Curt | Acquired via trade | SOU |   | After |
| 3/28/2010 | RIV | Johnson A | Traded away | ROC |   | After |
| 3/28/2010 | ROC | Johnson A | Acquired via trade | RIV |   | After |
| 3/28/2010 | SOU | Davis Curt | Traded away | RIV |   | After |