| Trans Num | Date | Details |
| 1944.4 | 2026-03-07 | Superior Wildcats trade Nels Potter and SUP 1945 #1 to the Holyoke Purple Knights for Mickey Haefner, Rudy York, and HOL 1945 #2. |
| 1943.8 | 2026-01-25 | Cooperstown Giants trade Mickey Haefner and COO 1943 #5 to the Holyoke Purple Knights for Hank Borowy, Russ Christopher, and Yank Terry. |