Transactions listed are from November 1 of previous year to April 1 of the following year.
The Brooklyn Robins selected Rabbit Maranville off waivers from the Chicago Cubs.
The Brooklyn Robins selected William Marriott off waivers from the Boston Braves.
The Detroit Tigers traded Fred Haney to the Boston Red Sox for Homer Ezzell and Tex Vache.
The St. Louis Cardinals traded Jimmy Cooney to the Chicago Cubs for Vic Keen.
The Philadelphia Athletics purchased Bill Wambsganss from the Boston Red Sox for $4,000.
The New York Giants traded a player to be named later to Louisville (American Association) for a player to be named later and Ty Tyson. The New York Giants sent Earl Webb (December 12, 1925) to Louisville (American Association) to complete the trade.
The New York Yankees traded cash and players to Toronto (International) for Myles Thomas.
The New York Yankees purchased Al Mamaux from Newark (International). (Date given is approximate. Exact date is uncertain.)
The New York Yankees released Howie Shanks.
The New York Yankees traded a player to be named later and $25000 and 3 players to be named to St Paul (American Association) for a player to be named later and Pat Collins. The New York Yankees sent Pee-Wee Wanninger (December 16, 1925) to St Paul (American Association) to complete the trade.
The Philadelphia Phillies traded Jimmy Ring to the New York Giants for Jack Bentley and Wayland Dean.
The St. Louis Browns selected Charlie Robertson off waivers from the Chicago White Sox.
The Detroit Tigers signed Rick Ferrell as a free agent.
The Boston Braves purchased Hal Goldsmith from Worcester (Eastern).
The Detroit Tigers purchased Carl Hubbell from Oklahoma City (Western) for $20,000.
Mobile (Southern Association) traded Dick Jones to the Washington Senators for . The Washington Senators sent Mule Shirley (February 20, 1926) to Mobile (Southern Association) to complete the trade.
The Brooklyn Robins purchased Chick Fewster from the Cleveland Indians.
The New York Giants signed Mel Ott as a free agent.
The Cincinnati Reds purchased Wally Pipp from the New York Yankees for $7,500.
The New York Yankees purchased Spencer Adams from the Washington Senators.
The Washington Senators traded Win Ballou and Tom Zachary to the St. Louis Browns for Joe Bush and Jack Tobin.
The St. Louis Browns traded George Mogridge and cash to the New York Yankees for Wally Schang.
The Cincinnati Reds purchased Val Picinich from the Boston Red Sox.
The New York Giants traded a player to be named later and Hack Wilson to Toledo (American Association) for a player to be named later and Earl Webb. The New York Giants sent Pip Koehler (February 15, 1926) to Toledo (American Association) to complete the trade.
The Boston Braves selected George Mogridge off waivers from the New York Yankees.
The New York Yankees traded players to be named later and $50,000 to Salt Lake City (PCL) for players to be named later and Tony Lazzeri. The New York Yankees sent Mack Hillis (March, 1926), Frank Zoellers (minors) (March, 1926) and Curt Fullerton (March 23, 1926) to Salt Lake City (PCL) to complete the trade.
The Chicago White Sox selected Everett Scott off waivers from the Washington Senators.
The Pittsburgh Pirates signed Lloyd Waner as a free agent.
The Cleveland Indians purchased Ernie Padgett from the Boston Braves.
The Boston Red Sox purchased Topper Rigney from the Detroit Tigers.
The Boston Braves purchased Jack Smith from the St. Louis Cardinals.
Indianapolis (American Association) purchased By Speece from the Cleveland Indians.
The Cincinnati Reds purchased Art Nehf from the New York Giants.
Buffalo (International) purchased Bernie Neis from the Boston Braves.
The Detroit Tigers selected Wilbur Cooper off waivers from the Chicago Cubs.
The St. Louis Cardinals traded Heinie Mueller to the New York Giants for Billy Southworth.
The Brooklyn Robins purchased Sam Bohne from the Cincinnati Reds.
The New York Yankees selected Roy Carlyle off waivers from the Boston Red Sox.
The Philadelphia Athletics traded Slim Harriss, Fred Heimach and Baby Doll Jacobson to the Boston Red Sox for Howard Ehmke and Tom Jenkins.
The St. Louis Browns traded Baby Doll Jacobson to the Philadelphia Athletics for Bing Miller.
The Chicago Cubs selected Walt Huntzinger off waivers from the St. Louis Cardinals.
The St. Louis Cardinals selected Pete Alexander off waivers from the Chicago Cubs.
The New York Giants selected Jimmy Johnston off waivers from the Boston Braves.
The Washington Senators released Jack Tobin.
The Pittsburgh Pirates purchased Joe Bush from the Washington Senators.
The Cincinnati Reds selected Everett Scott off waivers from the Chicago White Sox.
The Boston Braves purchased Eddie Moore from the Pittsburgh Pirates.
The New York Yankees selected Hank Severeid off waivers from the Washington Senators.
The Boston Red Sox signed Jack Tobin as a free agent.
The Philadelphia Phillies purchased Bob Rice from Portsmouth (Virginia).
The Washington Senators purchased Clay Van Alstyne from Bridgeport (Eastern).
The Boston Braves purchased Sid Womack from Providence (Eastern).
The New York Giants traded 2 players to be named to Indianapolis (American Association) for Freddie Fitzsimmons.
The Boston Braves purchased Art Mills from Pittsfield (Eastern).
The Brooklyn Robins selected Max Carey off waivers from the Pittsburgh Pirates.
The Pittsburgh Pirates traded cash and 2 players to be named to Toronto (International) for Herman Layne.
The Brooklyn Robins released Rabbit Maranville.
The Washington Senators traded Dutch Ruether to the New York Yankees for . The New York Yankees sent Garland Braxton (October 19, 1926) and Nick Cullop (October 19, 1926) to the Washington Senators to complete the trade.
The St. Louis Cardinals selected Frank Snyder off waivers from the New York Giants.
The Chicago White Sox purchased Grady Adkins from Shreveport (Texas).
The New York Giants selected Jack Bentley off waivers from the Philadelphia Phillies.
The Boston Braves purchased Lance Richbourg from Milwaukee (American Association).
The Philadelphia Phillies purchased Alex Ferguson from the Washington Senators.
The Cincinnati Reds drafted Pete Appleton from Waterbury (Eastern) in the 1926 rule 5 draft.
The Philadelphia Athletics drafted Charlie Bates from Martinsburg (Blue Ridge) in the 1926 rule 5 draft.
The Washington Senators drafted Johnny Berger from New Haven (Eastern) in the 1926 rule 5 draft.
The Chicago White Sox drafted Ike Boone from Mission (PCL) in the 1926 rule 5 draft.
The Chicago Cubs drafted Jim Brillheart from Memphis (Southern Association) in the 1926 rule 5 draft.
The Washington Senators drafted Bobby Burke from Little Rock (Southern Association) in the 1926 rule 5 draft.
The Pittsburgh Pirates drafted Mike Cvengros from New Orleans (Southern Association) in the 1926 rule 5 draft.
The Chicago Cubs drafted Hank Grampp from New Orleans (Southern Association) in the 1926 rule 5 draft.
The Boston Red Sox drafted Grover Hartley from Indianapolis (American Association) in the 1926 rule 5 draft.
The Chicago White Sox drafted Elmer Jacobs from Los Angeles (PCL) in the 1926 rule 5 draft.
The New York Giants drafted Tex Jeanes from Birmingham (Southern Association) in the 1926 rule 5 draft.
The Washington Senators drafted Bernie Neis from Buffalo (International) in the 1926 rule 5 draft.
The Philadelphia Phillies drafted Hub Pruett from Oakland (PCL) in the 1926 rule 5 draft.
The Boston Braves drafted Charlie Robertson from Milwaukee (American Association) in the 1926 rule 5 draft.
The Brooklyn Robins drafted Oscar Roettger from St Paul (American Association) in the 1926 rule 5 draft.
The Boston Red Sox drafted Red Rollings from Mobile (Southern Association) in the 1926 rule 5 draft.
The Boston Red Sox drafted John Wilson from Columbia (South Atlantic) in the 1926 rule 5 draft.
The Philadelphia Athletics purchased Joe Boley from Baltimore (International).
The Chicago White Sox released Eddie Collins.
The Boston Red Sox purchased Frank Welch from the Philadelphia Athletics.
The Boston Braves selected Jack Knight off waivers from the Philadelphia Phillies.
The Brooklyn Robins released Jack Fournier.
The St. Louis Cardinals signed Rabbit Maranville as a free agent.
The Philadelphia Athletics traded Bill Wambsganss and $50,000 to Kansas City (American Association) for Dud Branom.
The St. Louis Cardinals traded Rogers Hornsby to the New York Giants for Frankie Frisch and Jimmy Ring.
The Philadelphia Athletics signed Eddie Collins as a free agent.
The Boston Braves signed Jack Fournier as a free agent.
The Brooklyn Robins released Zack Wheat.
As part of a 3-team trade: The New York Giants sent Jack Scott and Fresco Thompson to the Philadelphia Phillies. The Philadelphia Phillies sent George Harper to the New York Giants. The Philadelphia Phillies sent Butch Henline to the Brooklyn Robins. The Brooklyn Robins sent Burleigh Grimes to the New York Giants.
The Philadelphia Athletics signed Zack Wheat as a free agent.
The New York Yankees traded Aaron Ward to the Chicago White Sox for Johnny Grabowski and Ray Morehart.
The St. Louis Browns traded Pinky Hargrave, Bobby LaMotte and Marty McManus to the Detroit Tigers for Otto Miller, Billy Mullen, Frank O'Rourke and Lefty Stewart.
The Washington Senators traded Roger Peckinpaugh to the Chicago White Sox for Leo Mangum and Sloppy Thurston.
The Detroit Tigers released Ty Cobb.
The Cleveland Indians released Tris Speaker.
The Washington Senators signed Tris Speaker as a free agent.
The Pittsburgh Pirates selected Joe Harris off waivers from the Washington Senators.
The Philadelphia Athletics signed Ty Cobb as a free agent.
The St. Louis Browns traded Cedric Durst and Joe Giard to the New York Yankees for Sam Jones.
The New York Giants traded George Kelly and cash to the Cincinnati Reds for Edd Roush.
Pittsfield (Eastern) purchased Sid Womack from the Boston Braves.
The Washington Senators purchased Mickey O'Neil from the Brooklyn Robins.