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Lost World Series (4-3) to Cincinnati Reds |

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Transactions listed are from November 1 of previous year to April 1 of the following year.
October 3, 1939
Drafted Tom Seats from the St. Louis Cardinals in the 1939 rule 5 draft.
December 6, 1939
Traded Billy Rogell to the Chicago Cubs. Received Dick Bartell.
December 9, 1939
Traded Benny McCoy to the Philadelphia Athletics. Received Wally Moses. Trade was voided and players returned on January 14, 1940.
1940
Signed Dick Conger as an amateur free agent.
Signed Joe Erautt as an amateur free agent.
Signed Bob Gillespie as an amateur free agent.
Obtained Sal Maglie from Buffalo (International) as part of a minor league working agreement.
January 14, 1940
Ed Albosta granted Free Agency.
Roy Cullenbine granted Free Agency.
Guy Curtright granted Free Agency.
Dutch Dietz granted Free Agency.
Cal Dorsett granted Free Agency.
Al Gardella granted Free Agency.
Danny Gardella granted Free Agency.
Paul Gillespie granted Free Agency.
Buddy Hancken granted Free Agency.
Jim Hickey granted Free Agency.
Johnny Johnson granted Free Agency.
Dale Jones granted Free Agency.
Pat McLaughlin granted Free Agency.
Catfish Metkovich granted Free Agency.
Bill Mueller granted Free Agency.
Damon Phillips granted Free Agency.
Steve Rachunok granted Free Agency.
Johnny Sain granted Free Agency.
Bryan Stephens granted Free Agency.
Tommy Tatum granted Free Agency.
Ed Weiland granted Free Agency.
Benny McCoy granted Free Agency.
January 20, 1940
Traded Beau Bell to the Cleveland Indians. Received Bruce Campbell.
January 30, 1940
Traded Slick Coffman to the St. Louis Browns. Received Billy Sullivan.
February 23, 1940
Selected Lynn Nelson off waivers from the Philadelphia Athletics.
May 22, 1940 (Standings)
Sold Cotton Pippen to Oakland (PCL).
July 3, 1940 (Standings)
Sold Lynn Nelson to Buffalo (International).
July 30, 1940 (Standings)
Purchased Tuck Stainback from the Brooklyn Dodgers.
August 1, 1940 (Standings)
Released Red Kress.
August 7, 1940 (Standings)
Purchased Dutch Meyer from the New York Giants.
September 11, 1940 (Standings)
Frank Secory selected by the Cincinnati Reds off waivers.
October 4, 1940 (Standings)
Dick Conger drafted by the Pittsburgh Pirates in the 1940 rule 5 draft.
December, 1940
Sold Scat Metha to Knoxville (Southern Association).
Traded Les Fleming to Nashville (Southern Association). Received Bob Boken, Mickey Rocco and cash.
December 12, 1940
Sold Pete Fox to the Boston Red Sox.
December 18, 1940
Selected Eric McNair off waivers from the Chicago White Sox.
1941
Frank Carswell received from Texarkana (Big State) in an unknown transaction.
Signed Hoot Evers as an amateur free agent.
Bobby Hogue received from Hollywood (Florida East Coast) in an unknown transaction.
Signed Johnny Lipon as an amateur free agent.
Signed Stubby Overmire as an amateur free agent.
Obtained Hal White from Buffalo (International) as part of a minor league working agreement.
February 8, 1941
Released Earl Averill.