| Trans Num | Date | Details |
| 2024.15 | 2024-06-08 | Roger Dodgers trade Ian Happ to the Altoona Attack for Andres Gimenez and ATT 2025 #4. |
| 2020.4 | 2020-07-19 | San Francisco Seals trade Ian Happ, Josh James, and Carlos Rodon to the Roger Dodgers for Aroldis Chapman and Alex Colome. |
| 2018.11 | 2018-08-18 | Colorado trades Ian Happ to San Francisco for Taijuan Walker and Max Stassi. |