League transaction log -- ABA
Regular season
| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/10/2021 | ABQ | Simmons | Acquired via trade | BUF | | After |
| 4/10/2021 | ALB | Nimmo | Acquired via trade | FAR | | After |
| 4/10/2021 | BUF | Simmons | Traded away | ABQ | | After |
| 4/10/2021 | FAR | Nimmo | Traded away | ALB | | After |
| 4/20/2021 | BUF | Acuna | Acquired via trade | MIS | | After |
| 4/20/2021 | BUF | Arraez | Traded away | MIS | | After |
| 4/20/2021 | BUF | Bieber | Traded away | MIS | | After |
| 4/20/2021 | BUF | Jimenez,E | Traded away | MIS | | After |
| 4/20/2021 | MIS | Acuna | Traded away | BUF | | After |
| 4/20/2021 | MIS | Arraez | Acquired via trade | BUF | | After |
| 4/20/2021 | MIS | Bieber | Acquired via trade | BUF | | After |
| 4/20/2021 | MIS | Jimenez,E | Acquired via trade | BUF | | After |
| 4/24/2021 | ALB | Bassitt | Traded away | MIA | | After |
| 4/24/2021 | ALB | Davis,JD | Traded away | MIA | | After |
| 4/24/2021 | ALB | deGrom | Acquired via trade | MIA | | After |
| 4/24/2021 | ALB | Mize | Traded away | MIA | | After |
| 4/24/2021 | ALB | Plesac | Traded away | MIA | | After |
| 4/24/2021 | MIA | Bassitt | Acquired via trade | ALB | | After |
| 4/24/2021 | MIA | Davis,JD | Acquired via trade | ALB | | After |
| 4/24/2021 | MIA | deGrom | Traded away | ALB | | After |
| 4/24/2021 | MIA | Mize | Acquired via trade | ALB | | After |
| 4/24/2021 | MIA | Plesac | Acquired via trade | ALB | | After |
| 4/27/2021 | FAR | Bohm | Traded away | FL | | After |
| 4/27/2021 | FL | Bohm | Acquired via trade | FAR | | After |