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| 2023-12-21 00:00:00 | Philadelphia Assassins | | Demoted | Jose Combs | South Dakota Blackhawks |
| 2023-12-21 00:00:00 | South Dakota Blackhawks | | Promoted | Juan Wales | Philadelphia Assassins |
| 2023-12-21 00:00:00 | New York Warriors | | Demoted | Riley Moore | Hartford Hebrew Hammers |
| 2023-12-20 00:00:00 | Louisville Colonels | | Drop | Gavin Lucas | |
| 2023-12-19 00:00:00 | Miami Macho Men | | Demoted | Ethan Goodrich | Nashville Night Owls |
| 2023-12-19 00:00:00 | Miami Macho Men | | Demoted | Richard Rice | Nashville Night Owls |
| 2023-12-18 00:00:00 | Phoenix Kangaroos | | Demoted | Jarod Boynton | San Juan Devils |
| 2023-12-18 00:00:00 | Phoenix Kangaroos | | Demoted | Jalen Griffin | San Juan Devils |
| 2023-12-18 00:00:00 | Houston Octopods | | Demoted | Christian Miller | Syracuse River Rats |
| 2023-12-18 00:00:00 | Seattle Cougars | | Demoted | Terry Lombardo | Vancouver Mounties |
| 2023-12-15 00:00:00 | New Orleans Hurricanes | | Drop | Steven Asher | |
| 2023-12-15 00:00:00 | Detroit Gear Daddies | | Promoted | James Wiley | New Orleans Hurricanes |
| 2023-12-15 00:00:00 | Detroit Gear Daddies | | Promoted | Drew Myers | New Orleans Hurricanes |
| 2023-12-15 00:00:00 | New Orleans Hurricanes | | Demoted | Benjamin Barrett | Detroit Gear Daddies |
| 2023-12-15 00:00:00 | Detroit Gear Daddies | | Promoted | Isaiah Schieffer | New Orleans Hurricanes |
| 2023-12-14 15:41:15 | San Francisco Golden Gators | Elmer Robinson | Acquired via trade | 2nd round pick in season 39 | San Diego Sabercats |
| 2023-12-14 15:41:15 | San Francisco Golden Gators | | Acquired via trade | 3rd round pick in season 39 | San Diego Sabercats |
| 2023-12-14 15:40:29 | Cleveland Weasels | Arthur Fernandez | Acquired via trade | 2nd round pick in season 39 | San Diego Sabercats |
| 2023-12-14 15:40:29 | Cleveland Weasels | Kyle King | Acquired via trade | | San Diego Sabercats |
| 2023-12-14 00:00:00 | Cleveland Weasels | | Demoted | Kevin Rushing | Pittsburgh Berserkers |
| 2023-12-14 00:00:00 | Santiago Sharks | | Promoted | Alexis Monroe | San Diego Sabercats |
| 2023-12-14 00:00:00 | Santiago Sharks | | Promoted | Daniel Covington | San Diego Sabercats |
| 2023-12-12 00:00:00 | Indianapolis Tornadoes | | Demoted | Kegan Lemery | Buenos Aires Eagles |
| 2023-12-11 00:00:00 | San Diego Sabercats | | Drop | Kevin Wright | |
| 2023-12-11 00:00:00 | San Francisco Golden Gators | | Demoted | David Coldwell | Little Rock Fighting Farmers |