Transactions listed are from October 1 of previous year to April 1 of the following year.
- January 16, 1907
Traded a player to be named later, Jack Harper and cash to the Cincinnati Reds. Received a player to be named later. The Chicago Cubs sent Doc Gessler (January 16, 1907) to the Cincinnati Reds to complete the trade. The Cincinnati Reds sent Chick Fraser (January 16, 1907) to the Chicago Cubs to complete the trade.
- June, 1907
- June 24, 1907
- August, 1907
- August 15, 1907
Released Mike Kahoe. (Date given is approximate. Exact date is uncertain.)