| Transactions |
| Date | Team | Player | Type | OthTm | EffDate | When |
| 4/6/1977 | BEA | Oates | Promoted to active roster | | | Before |
| 4/6/1977 | BEA | Sadek | Demoted to reserve roster | | | Before |
| 4/6/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 4/6/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 4/6/1977 | CAR | Ivie | Promoted to active roster | | | Before |
| 4/6/1977 | CAR | Martinez,Ti | Promoted to active roster | | | Before |
| 4/6/1977 | EKL | Carbo | Promoted to active roster | | | Before |
| 4/6/1977 | EKL | Matlack | Demoted to reserve roster | | | Before |
| 4/7/1977 | FOR | Freed | Demoted to reserve roster | | | Before |
| 4/7/1977 | FOR | Freed | Promoted to active roster | | | Before |
| 4/7/1977 | FOR | Messersmith | Promoted to active roster | | | Before |
| 4/7/1977 | FOR | Nordhagen | Demoted to reserve roster | | | Before |
| 4/7/1977 | FOR | Nordhagen | Promoted to active roster | | | Before |
| 4/7/1977 | FOR | Paciorek | Demoted to reserve roster | | | Before |
| 4/12/1977 | EKL | Matlack | Promoted to active roster | | | Before |
| 4/12/1977 | EKL | Owchinko | Demoted to reserve roster | | | Before |
| 4/12/1977 | WIN | Fregosi | Demoted to reserve roster | | | Before |
| 4/12/1977 | WIN | Sarmiento | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Bailor | Demoted to reserve roster | | | Before |
| 4/13/1977 | CAR | Dawson | Demoted to reserve roster | | | Before |
| 4/13/1977 | CAR | Garrett | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Grich | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Hunter | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Lewallyn | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | McGregor | Demoted to reserve roster | | | Before |
| 4/13/1977 | CAR | Newman | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Parrish | Demoted to reserve roster | | | Before |
| 4/13/1977 | CAR | Rettenmund | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Sorensen | Demoted to reserve roster | | | Before |
| 4/13/1977 | CAR | Thomas,De | Demoted to reserve roster | | | Before |
| 4/13/1977 | CAR | Thomas,De | Promoted to active roster | | | Before |
| 4/13/1977 | CAR | Wockenfuss | Demoted to reserve roster | | | Before |
| 4/13/1977 | EKL | Haas | Demoted to reserve roster | | | Before |
| 4/13/1977 | EKL | Honeycutt | Promoted to active roster | | | Before |
| 4/13/1977 | EKL | Owchinko | Demoted to reserve roster | | | Before |
| 4/13/1977 | EKL | Owchinko | Promoted to active roster | | | Before |
| 4/13/1977 | FOR | Borgmann | Promoted to active roster | | | Before |
| 4/13/1977 | FOR | Kusick | Demoted to reserve roster | | | Before |
| 4/13/1977 | FOR | Paciorek | Promoted to active roster | | | Before |
| 4/13/1977 | FOR | Williams,E | Demoted to reserve roster | | | Before |
| 4/13/1977 | ROY | Allen | Demoted to reserve roster | | | Before |
| 4/13/1977 | ROY | Hairston | Promoted to active roster | | | Before |
| 4/17/1977 | CAR | Bailor | Promoted to active roster | | | Before |
| 4/17/1977 | CAR | Dawson | Promoted to active roster | | | Before |
| 4/17/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 4/17/1977 | CAR | Grich | Demoted to reserve roster | | | Before |
| 4/17/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 4/17/1977 | CAR | McGregor | Promoted to active roster | | | Before |
| 4/17/1977 | CAR | Parrish | Promoted to active roster | | | Before |
| 4/17/1977 | CAR | Rettenmund | Demoted to reserve roster | | | Before |
| 4/17/1977 | CAR | Sorensen | Promoted to active roster | | | Before |
| 4/17/1977 | CAR | Underwood | Demoted to reserve roster | | | Before |
| 4/17/1977 | EKL | Haas | Promoted to active roster | | | Before |
| 4/17/1977 | EKL | Honeycutt | Demoted to reserve roster | | | Before |
| 4/17/1977 | EKL | Owchinko | Promoted to active roster | | | Before |
| 4/17/1977 | EKL | Renko | Demoted to reserve roster | | | Before |
| 4/17/1977 | ELE | Denny | Demoted to reserve roster | | | Before |
| 4/17/1977 | ELE | Downing | Promoted to active roster | | | Before |
| 4/17/1977 | LAA | Fryman | Promoted to active roster | | | Before |
| 4/17/1977 | LAA | Thomas,Da | Demoted to reserve roster | | | Before |
| 4/17/1977 | WWM | Dierker | Demoted to reserve roster | | | Before |
| 4/17/1977 | WWM | Lamp | Demoted to reserve roster | | | Before |
| 4/17/1977 | WWM | Lamp | Promoted to active roster | | | Before |
| 4/17/1977 | WWM | Mejias | Promoted to active roster | | | Before |
| 4/17/1977 | WWM | Pentz | Demoted to reserve roster | | | Before |
| 4/17/1977 | WWM | Ruhle | Promoted to active roster | | | Before |
| 4/19/1977 | FOR | Asselstine | Promoted to active roster | | | Before |
| 4/19/1977 | FOR | Borgmann | Demoted to reserve roster | | | Before |
| 4/19/1977 | FOR | Doyle | Promoted to active roster | | | Before |
| 4/19/1977 | FOR | Johnson,DA | Demoted to reserve roster | | | Before |
| 4/19/1977 | FOR | Kusick | Promoted to active roster | | | Before |
| 4/19/1977 | FOR | May,D | Demoted to reserve roster | | | Before |
| 4/19/1977 | FOR | McMullen | Demoted to reserve roster | | | Before |
| 4/19/1977 | FOR | Williams,E | Promoted to active roster | | | Before |
| 4/19/1977 | SPK | Macha | Promoted to active roster | | | Before |
| 4/19/1977 | SPK | Marshall | Demoted to reserve roster | | | Before |
| 4/24/1977 | CRU | Hume | Demoted to reserve roster | | | Before |
| 4/24/1977 | CRU | Laxton | Promoted to active roster | | | Before |
| 4/24/1977 | EKL | Owchinko | Demoted to reserve roster | | | Before |
| 4/24/1977 | EKL | Renko | Promoted to active roster | | | Before |
| 4/26/1977 | CAR | Baez | Demoted to reserve roster | | | Before |
| 4/26/1977 | CAR | Elliott | Promoted to active roster | | | Before |
| 4/26/1977 | CAR | Garrett | Promoted to active roster | | | Before |
| 4/26/1977 | CAR | Lewallyn | Demoted to reserve roster | | | Before |
| 4/26/1977 | CAR | Newman | Demoted to reserve roster | | | Before |
| 4/26/1977 | CAR | Sorensen | Demoted to reserve roster | | | Before |
| 4/26/1977 | CAR | Underwood | Promoted to active roster | | | Before |
| 4/26/1977 | CAR | Wockenfuss | Promoted to active roster | | | Before |
| 4/26/1977 | EKL | Haas | Demoted to reserve roster | | | Before |
| 4/26/1977 | EKL | Honeycutt | Promoted to active roster | | | Before |
| 4/26/1977 | ELE | Cort | Promoted to active roster | | | Before |
| 4/26/1977 | ELE | Downing | Demoted to reserve roster | | | Before |
| 4/26/1977 | ELE | Terrell | Demoted to reserve roster | | | Before |
| 4/26/1977 | ELE | Turner | Promoted to active roster | | | Before |
| 4/30/1977 | ELE | Coluccio | Promoted to active roster | | | Before |
| 4/30/1977 | ELE | Cort | Demoted to reserve roster | | | Before |
| 4/30/1977 | ELE | Downing | Promoted to active roster | | | Before |
| 4/30/1977 | ELE | Mota | Demoted to reserve roster | | | Before |
| 4/30/1977 | GLA | Staggs | Demoted to reserve roster | | | Before |
| 4/30/1977 | GLA | White,R | Promoted to active roster | | | Before |
| 4/30/1977 | LAA | Wilcox | Demoted to reserve roster | | | Before |
| 4/30/1977 | LAA | Wilcox | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | Allen | Demoted to reserve roster | | | Before |
| 4/30/1977 | ROY | Allen | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | Bevacqua | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | Boisclair | Demoted to reserve roster | | | Before |
| 4/30/1977 | ROY | Boisclair | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | Bosley | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | Grubb | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | Hairston | Demoted to reserve roster | | | Before |
| 4/30/1977 | ROY | Hairston | Promoted to active roster | | | Before |
| 4/30/1977 | ROY | McBride | Demoted to reserve roster | | | Before |
| 4/30/1977 | ROY | Solaita | Demoted to reserve roster | | | Before |
| 4/30/1977 | ROY | Todd,J | Demoted to reserve roster | | | Before |
| 4/30/1977 | WIN | Bruno | Demoted to reserve roster | | | Before |
| 4/30/1977 | WIN | Bruno | Promoted to active roster | | | Before |
| 4/30/1977 | WIN | Bruno | Promoted to active roster | | | Before |
| 4/30/1977 | WIN | Dues | Promoted to active roster | | | Before |
| 4/30/1977 | WIN | Richard | Demoted to reserve roster | | | Before |
| 4/30/1977 | WIN | Sarmiento | Demoted to reserve roster | | | Before |
| 5/1/1977 | CAR | Baez | Promoted to active roster | | | Before |
| 5/1/1977 | CAR | Bailor | Demoted to reserve roster | | | Before |
| 5/1/1977 | CAR | Elliott | Demoted to reserve roster | | | Before |
| 5/1/1977 | CAR | Elliott | Promoted to active roster | | | Before |
| 5/1/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 5/1/1977 | CAR | Grich | Promoted to active roster | | | Before |
| 5/1/1977 | CAR | Halicki | Demoted to reserve roster | | | Before |
| 5/1/1977 | CAR | Hernandez,W | Demoted to reserve roster | | | Before |
| 5/1/1977 | CAR | Hunter | Promoted to active roster | | | Before |
| 5/1/1977 | CAR | Sorensen | Promoted to active roster | | | Before |
| 5/1/1977 | CRU | Lum | Demoted to reserve roster | | | Before |
| 5/1/1977 | CRU | Puhl | Promoted to active roster | | | Before |
| 5/1/1977 | EKL | Bell,B | Demoted to reserve roster | | | Before |
| 5/1/1977 | EKL | Knight | Promoted to active roster | | | Before |
| 5/1/1977 | FOR | Alexander,G | Demoted to reserve roster | | | Before |
| 5/1/1977 | FOR | Asselstine | Demoted to reserve roster | | | Before |
| 5/1/1977 | FOR | Borgmann | Promoted to active roster | | | Before |
| 5/1/1977 | FOR | Freed | Demoted to reserve roster | | | Before |
| 5/1/1977 | FOR | Johnson,DA | Promoted to active roster | | | Before |
| 5/1/1977 | FOR | May,D | Promoted to active roster | | | Before |
| 5/1/1977 | FOR | McMullen | Promoted to active roster | | | Before |
| 5/1/1977 | FOR | Nordhagen | Demoted to reserve roster | | | Before |
| 5/1/1977 | ROY | Bevacqua | Demoted to reserve roster | | | Before |
| 5/1/1977 | ROY | Grubb | Promoted to active roster | | | Before |
| 5/1/1977 | ROY | Rojas | Demoted to reserve roster | | | Before |
| 5/1/1977 | ROY | Todd,J | Promoted to active roster | | | Before |
| 5/1/1977 | SPK | Camp | Demoted to reserve roster | | | Before |
| 5/1/1977 | SPK | Thomas,R | Promoted to active roster | | | Before |
| 5/1/1977 | WWM | Lonborg | Demoted to reserve roster | | | Before |
| 5/1/1977 | WWM | May,C | Promoted to active roster | | | Before |
| 5/1/1977 | WWM | Mejias | Demoted to reserve roster | | | Before |
| 5/1/1977 | WWM | Montanez | Demoted to reserve roster | | | Before |
| 5/1/1977 | WWM | Moore,B | Promoted to active roster | | | Before |
| 5/1/1977 | WWM | Sexton | Promoted to active roster | | | Before |
| 5/4/1977 | BEA | Dal Canton | Demoted to reserve roster | | | Before |
| 5/4/1977 | BEA | Verhoeven | Promoted to active roster | | | Before |
| 5/4/1977 | CAR | Bailor | Promoted to active roster | | | Before |
| 5/4/1977 | CAR | Elliott | Demoted to reserve roster | | | Before |
| 5/4/1977 | CAR | Forsch,K | Demoted to reserve roster | | | Before |
| 5/4/1977 | CAR | Garrett | Promoted to active roster | | | Before |
| 5/4/1977 | CAR | Grich | Demoted to reserve roster | | | Before |
| 5/4/1977 | CAR | Halicki | Promoted to active roster | | | Before |
| 5/4/1977 | CAR | Hernandez,W | Promoted to active roster | | | Before |
| 5/4/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 5/4/1977 | CAR | Lemongello | Demoted to reserve roster | | | Before |
| 5/4/1977 | CAR | Lewallyn | Promoted to active roster | | | Before |
| 5/4/1977 | EKL | Bell,B | Promoted to active roster | | | Before |
| 5/4/1977 | EKL | Haas | Promoted to active roster | | | Before |
| 5/4/1977 | EKL | Knight | Demoted to reserve roster | | | Before |
| 5/4/1977 | EKL | Matlack | Demoted to reserve roster | | | Before |
| 5/4/1977 | MOB | Burke,S | Traded away | SPK | | After |
| 5/4/1977 | MOB | Capilla | Acquired via trade | SPK | | After |
| 5/4/1977 | MOB | Holtzman | Traded away | SPK | | After |
| 5/4/1977 | MOB | Torrealba | Acquired via trade | SPK | | After |
| 5/4/1977 | ROY | Bevacqua | Promoted to active roster | | | Before |
| 5/4/1977 | ROY | Grubb | Demoted to reserve roster | | | Before |
| 5/4/1977 | ROY | Hairston | Demoted to reserve roster | | | Before |
| 5/4/1977 | ROY | Morales,Je | Demoted to reserve roster | | | Before |
| 5/4/1977 | ROY | Morales,Je | Promoted to active roster | | | Before |
| 5/4/1977 | SPK | Aase | Demoted to reserve roster | | | Before |
| 5/4/1977 | SPK | Haney | Demoted to reserve roster | | | Before |
| 5/4/1977 | SPK | Haney | Promoted to active roster | | | Before |
| 5/4/1977 | SPK | Macha | Demoted to reserve roster | | | Before |
| 5/4/1977 | SPK | Macha | Promoted to active roster | | | Before |
| 5/4/1977 | SPK | Marshall | Promoted to active roster | | | Before |
| 5/4/1977 | SPK | Norwood | Demoted to reserve roster | | | Before |
| 5/4/1977 | SPK | Norwood | Promoted to active roster | | | Before |
| 5/4/1977 | SPK | Torrealba | Demoted to reserve roster | | | Before |
| 5/4/1977 | SPK | Willis | Promoted to active roster | | | Before |
| 5/4/1977 | SPK | Burke,S | Acquired via trade | MOB | | After |
| 5/4/1977 | SPK | Capilla | Traded away | MOB | | After |
| 5/4/1977 | SPK | Holtzman | Acquired via trade | MOB | | After |
| 5/4/1977 | SPK | Torrealba | Traded away | MOB | | After |
| 5/4/1977 | WWM | Dierker | Promoted to active roster | | | Before |
| 5/4/1977 | WWM | Lamp | Demoted to reserve roster | | | Before |
| 5/4/1977 | WWM | Lamp | Promoted to active roster | | | Before |
| 5/4/1977 | WWM | Lonborg | Demoted to reserve roster | | | Before |
| 5/4/1977 | WWM | Lonborg | Promoted to active roster | | | Before |
| 5/4/1977 | WWM | May,C | Demoted to reserve roster | | | Before |
| 5/4/1977 | WWM | Mejias | Promoted to active roster | | | Before |
| 5/4/1977 | WWM | Montanez | Promoted to active roster | | | Before |
| 5/4/1977 | WWM | Moore,B | Demoted to reserve roster | | | Before |
| 5/4/1977 | WWM | Sexton | Demoted to reserve roster | | | Before |
| 5/6/1977 | ELE | Denny | Promoted to active roster | | | Before |
| 5/6/1977 | ELE | Downing | Demoted to reserve roster | | | Before |
| 5/6/1977 | FOR | Borgmann | Demoted to reserve roster | | | Before |
| 5/6/1977 | FOR | Borgmann | Promoted to active roster | | | Before |
| 5/6/1977 | FOR | Dixon | Promoted to active roster | | | Before |
| 5/6/1977 | FOR | Foote | Promoted to active roster | | | Before |
| 5/6/1977 | FOR | Lindblad | Demoted to reserve roster | | | Before |
| 5/6/1977 | FOR | May,D | Demoted to reserve roster | | | Before |
| 5/6/1977 | FOR | Nordhagen | Promoted to active roster | | | Before |
| 5/6/1977 | FOR | Williams,E | Demoted to reserve roster | | | Before |
| 5/6/1977 | ROY | Hairston | Promoted to active roster | | | Before |
| 5/6/1977 | SPK | Burke,S | Promoted to active roster | | | Before |
| 5/6/1977 | SPK | Norwood | Promoted to active roster | | | Before |
| 5/6/1977 | SPK | Thomas,R | Demoted to reserve roster | | | Before |
| 5/6/1977 | WIN | Alston | Promoted to active roster | | | Before |
| 5/6/1977 | WIN | Dues | Demoted to reserve roster | | | Before |
| 5/6/1977 | WIN | Martinez,D | Demoted to reserve roster | | | Before |
| 5/6/1977 | WIN | Richard | Promoted to active roster | | | Before |
| 5/10/1977 | GLA | Millan | Demoted to reserve roster | | | Before |
| 5/10/1977 | GLA | Zeber | Promoted to active roster | | | Before |
| 5/10/1977 | WIN | Brett,K | Demoted to reserve roster | | | Before |
| 5/10/1977 | WIN | Brett,K | Promoted to active roster | | | Before |
| 5/10/1977 | WIN | Fahey | Demoted to reserve roster | | | Before |
| 5/10/1977 | WIN | Martinez,D | Promoted to active roster | | | Before |
| 5/10/1977 | WIN | Romo | Demoted to reserve roster | | | Before |
| 5/10/1977 | WIN | Sarmiento | Promoted to active roster | | | Before |
| 5/10/1977 | WIN | Smith,R | Demoted to reserve roster | | | Before |
| 5/10/1977 | WIN | Staiger | Promoted to active roster | | | Before |
| 5/11/1977 | BEA | Armbrister | Promoted to active roster | | | Before |
| 5/11/1977 | BEA | Madlock | Demoted to reserve roster | | | Before |
| 5/11/1977 | EKL | Honeycutt | Demoted to reserve roster | | | Before |
| 5/11/1977 | EKL | Matlack | Promoted to active roster | | | Before |
| 5/11/1977 | EKL | Monge | Demoted to reserve roster | | | Before |
| 5/11/1977 | EKL | Owchinko | Promoted to active roster | | | Before |
| 5/11/1977 | SPK | Marshall | Demoted to reserve roster | | | Before |
| 5/11/1977 | SPK | Murphy,T | Promoted to active roster | | | Before |
| 5/11/1977 | SPK | Norwood | Demoted to reserve roster | | | Before |
| 5/11/1977 | SPK | Thomas,R | Promoted to active roster | | | Before |
| 5/12/1977 | CAR | Forsch,K | Promoted to active roster | | | Before |
| 5/12/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 5/12/1977 | CAR | Grich | Promoted to active roster | | | Before |
| 5/12/1977 | CAR | Hunter | Promoted to active roster | | | Before |
| 5/12/1977 | CAR | Lemongello | Promoted to active roster | | | Before |
| 5/12/1977 | CAR | Lewallyn | Demoted to reserve roster | | | Before |
| 5/12/1977 | CAR | McGregor | Demoted to reserve roster | | | Before |
| 5/12/1977 | CAR | Newman | Promoted to active roster | | | Before |
| 5/12/1977 | CAR | Sorensen | Demoted to reserve roster | | | Before |
| 5/12/1977 | CAR | Wockenfuss | Demoted to reserve roster | | | Before |
| 5/12/1977 | CRU | Billingham | Demoted to reserve roster | | | Before |
| 5/12/1977 | CRU | Jones,Ri | Promoted to active roster | | | Before |
| 5/12/1977 | EKL | Carbo | Demoted to reserve roster | | | Before |
| 5/12/1977 | EKL | Knight | Promoted to active roster | | | Before |
| 5/12/1977 | EKL | Mahler | Promoted to active roster | | | Before |
| 5/12/1977 | EKL | Matlack | Demoted to reserve roster | | | Before |
| 5/12/1977 | EKL | Monge | Promoted to active roster | | | Before |
| 5/12/1977 | EKL | Niekro,P | Demoted to reserve roster | | | Before |
| 5/12/1977 | MOB | Capilla | Demoted to reserve roster | | | Before |
| 5/12/1977 | MOB | Moskau | Demoted to reserve roster | | | Before |
| 5/12/1977 | MOB | Torrealba | Promoted to active roster | | | Before |
| 5/12/1977 | ROY | Bevacqua | Demoted to reserve roster | | | Before |
| 5/12/1977 | ROY | Bosley | Promoted to active roster | | | Before |
| 5/16/1977 | CAR | Grich | Demoted to reserve roster | | | Before |
| 5/16/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 5/16/1977 | CAR | Newman | Demoted to reserve roster | | | Before |
| 5/16/1977 | CAR | Rettenmund | Promoted to active roster | | | Before |
| 5/16/1977 | CAR | Sorensen | Promoted to active roster | | | Before |
| 5/16/1977 | CAR | Wockenfuss | Promoted to active roster | | | Before |
| 5/16/1977 | CRU | Billingham | Promoted to active roster | | | Before |
| 5/16/1977 | CRU | Medich | Demoted to reserve roster | | | Before |
| 5/16/1977 | DAY | Clancy | Demoted to reserve roster | | | Before |
| 5/16/1977 | DAY | Ross | Promoted to active roster | | | Before |
| 5/16/1977 | ELE | Downing | Promoted to active roster | | | Before |
| 5/16/1977 | ELE | Jones,O | Demoted to reserve roster | | | Before |
| 5/18/1977 | BIS | Garcia,K | Demoted to reserve roster | | | Before |
| 5/18/1977 | BIS | Griffin,A | Promoted to active roster | | | Before |
| 5/18/1977 | EKL | Coleman,J | Demoted to reserve roster | | | Before |
| 5/18/1977 | EKL | Coleman,J | Promoted to active roster | | | Before |
| 5/18/1977 | EKL | Honeycutt | Promoted to active roster | | | Before |
| 5/18/1977 | EKL | Monge | Promoted to active roster | | | Before |
| 5/18/1977 | EKL | Owchinko | Demoted to reserve roster | | | Before |
| 5/18/1977 | EKL | Sosa | Demoted to reserve roster | | | Before |
| 5/18/1977 | FOR | Borgmann | Demoted to reserve roster | | | Before |
| 5/18/1977 | FOR | Doyle | Demoted to reserve roster | | | Before |
| 5/18/1977 | FOR | Doyle | Promoted to active roster | | | Before |
| 5/18/1977 | FOR | Foote | Promoted to active roster | | | Before |
| 5/18/1977 | FOR | Freed | Promoted to active roster | | | Before |
| 5/18/1977 | FOR | Johnson,DA | Demoted to reserve roster | | | Before |
| 5/18/1977 | FOR | Johnson,DA | Promoted to active roster | | | Before |
| 5/18/1977 | FOR | Kusick | Demoted to reserve roster | | | Before |
| 5/18/1977 | FOR | McMullen | Demoted to reserve roster | | | Before |
| 5/18/1977 | FOR | Paciorek | Promoted to active roster | | | Before |
| 5/18/1977 | WIN | Alston | Demoted to reserve roster | | | Before |
| 5/18/1977 | WIN | Fahey | Promoted to active roster | | | Before |
| 5/18/1977 | WIN | Romo | Promoted to active roster | | | Before |
| 5/18/1977 | WIN | Sarmiento | Demoted to reserve roster | | | Before |
| 5/18/1977 | WIN | Smith,R | Promoted to active roster | | | Before |
| 5/18/1977 | WIN | Staiger | Demoted to reserve roster | | | Before |
| 5/23/1977 | BEA | Oates | Demoted to reserve roster | | | Before |
| 5/23/1977 | BEA | Sadek | Promoted to active roster | | | Before |
| 5/23/1977 | BIS | Garcia,K | Promoted to active roster | | | Before |
| 5/23/1977 | BIS | Griffin,A | Demoted to reserve roster | | | Before |
| 5/23/1977 | CRU | Jones,Ri | Demoted to reserve roster | | | Before |
| 5/23/1977 | CRU | Medich | Promoted to active roster | | | Before |
| 5/23/1977 | SPK | Camp | Promoted to active roster | | | Before |
| 5/23/1977 | SPK | Chaney | Demoted to reserve roster | | | Before |
| 5/23/1977 | SPK | Haney | Promoted to active roster | | | Before |
| 5/23/1977 | SPK | Thomas,R | Demoted to reserve roster | | | Before |
| 5/23/1977 | WIN | Brett,K | Demoted to reserve roster | | | Before |
| 5/23/1977 | WIN | Fahey | Demoted to reserve roster | | | Before |
| 5/23/1977 | WIN | Sarmiento | Promoted to active roster | | | Before |
| 5/23/1977 | WIN | Staiger | Promoted to active roster | | | Before |
| 5/25/1977 | CAR | Figueroa | Demoted to reserve roster | | | Before |
| 5/25/1977 | CAR | Garrett | Promoted to active roster | | | Before |
| 5/25/1977 | CAR | Hunter | Promoted to active roster | | | Before |
| 5/25/1977 | CAR | Ivie | Demoted to reserve roster | | | Before |
| 5/25/1977 | CAR | Newman | Promoted to active roster | | | Before |
| 5/25/1977 | CAR | Wockenfuss | Demoted to reserve roster | | | Before |
| 5/25/1977 | EKL | Garber | Demoted to reserve roster | | | Before |
| 5/25/1977 | EKL | Honeycutt | Demoted to reserve roster | | | Before |
| 5/25/1977 | EKL | Owchinko | Promoted to active roster | | | Before |
| 5/25/1977 | EKL | Sosa | Promoted to active roster | | | Before |
| 5/25/1977 | ELE | Coluccio | Demoted to reserve roster | | | Before |
| 5/25/1977 | ELE | Denny | Demoted to reserve roster | | | Before |
| 5/25/1977 | ELE | Jones,O | Promoted to active roster | | | Before |
| 5/25/1977 | ELE | Mota | Promoted to active roster | | | Before |
| 5/25/1977 | FOR | Borgmann | Promoted to active roster | | | Before |
| 5/25/1977 | FOR | Dixon | Demoted to reserve roster | | | Before |
| 5/25/1977 | FOR | McMullen | Promoted to active roster | | | Before |
| 5/25/1977 | FOR | Messersmith | Demoted to reserve roster | | | Before |
| 5/25/1977 | FOR | Nordhagen | Promoted to active roster | | | Before |
| 5/25/1977 | FOR | Paciorek | Demoted to reserve roster | | | Before |
| 5/25/1977 | FOR | Williams,E | Demoted to reserve roster | | | Before |
| 5/25/1977 | LAA | Adams,B | Released | | | Before |
| 5/25/1977 | LAA | Adams,B | Signed | | | Before |
| 5/25/1977 | LAA | Alomar | Released | | | Before |
| 5/25/1977 | LAA | Alomar | Signed | | | Before |
| 5/25/1977 | LAA | Alvarado | Released | | | Before |
| 5/25/1977 | LAA | Alvarado | Signed | | | Before |
| 5/25/1977 | LAA | Capra | Demoted to reserve roster | | | Before |
| 5/25/1977 | LAA | Cash | Demoted to reserve roster | | | Before |
| 5/25/1977 | LAA | Cash | Promoted to active roster | | | Before |
| 5/25/1977 | LAA | McGlothen | Promoted to active roster | | | Before |
| 5/25/1977 | MOB | Moskau | Promoted to active roster | | | Before |
| 5/25/1977 | MOB | Torrealba | Demoted to reserve roster | | | Before |
| 5/25/1977 | PBS | Ruthven | Demoted to reserve roster | | | Before |
| 5/25/1977 | PBS | Vuckovich,P | Promoted to active roster | | | Before |
| 5/25/1977 | WWM | Ellis,D | Demoted to reserve roster | | | Before |
| 5/25/1977 | WWM | Ellis,D | Promoted to active roster | | | Before |
| 5/25/1977 | WWM | Ellis,D | Demoted to reserve roster | | | Before |
| 5/25/1977 | WWM | Lamp | Promoted to active roster | | | Before |
| 5/25/1977 | WWM | May,C | Promoted to active roster | | | Before |
| 5/25/1977 | WWM | Mejias | Demoted to reserve roster | | | Before |
| 5/25/1977 | WWM | Moore,B | Promoted to active roster | | | Before |
| 5/25/1977 | WWM | Rooker | Demoted to reserve roster | | | Before |
| 5/30/1977 | BEA | Corcoran | Promoted to active roster | | | Before |
| 5/30/1977 | BEA | Knowles | Demoted to reserve roster | | | Before |
| 5/30/1977 | BEA | Madlock | Promoted to active roster | | | Before |
| 5/30/1977 | BEA | Mora | Demoted to reserve roster | | | Before |
| 5/30/1977 | CAR | Figueroa | Promoted to active roster | | | Before |
| 5/30/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 5/30/1977 | CAR | Grich | Promoted to active roster | | | Before |
| 5/30/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 5/30/1977 | CAR | Ivie | Promoted to active roster | | | Before |
| 5/30/1977 | CAR | Newman | Demoted to reserve roster | | | Before |
| 5/30/1977 | CAR | Rettenmund | Demoted to reserve roster | | | Before |
| 5/30/1977 | CAR | Wockenfuss | Promoted to active roster | | | Before |
| 5/30/1977 | DAY | Alcala | Demoted to reserve roster | | | Before |
| 5/30/1977 | DAY | Clancy | Promoted to active roster | | | Before |
| 5/30/1977 | DAY | Nolan,G | Promoted to active roster | | | Before |
| 5/30/1977 | DAY | Ross | Demoted to reserve roster | | | Before |
| 5/30/1977 | EKL | Coleman,J | Demoted to reserve roster | | | Before |
| 5/30/1977 | EKL | Garber | Promoted to active roster | | | Before |
| 5/30/1977 | ELE | Denny | Promoted to active roster | | | Before |
| 5/30/1977 | ELE | Jones,O | Demoted to reserve roster | | | Before |
| 5/30/1977 | GLA | Harrelson | Demoted to reserve roster | | | Before |
| 5/30/1977 | GLA | Zeber | Promoted to active roster | | | Before |
| 5/30/1977 | LAA | Alomar | Released | | | Before |
| 5/30/1977 | LAA | Alomar | Signed | | | Before |
| 5/30/1977 | MOB | Capilla | Promoted to active roster | | | Before |
| 5/30/1977 | MOB | Hanna | Demoted to reserve roster | | | Before |
| 5/30/1977 | WWM | Ellis,D | Promoted to active roster | | | Before |
| 5/30/1977 | WWM | Lamp | Demoted to reserve roster | | | Before |
| 5/30/1977 | WWM | May,C | Demoted to reserve roster | | | Before |
| 5/30/1977 | WWM | Rooker | Promoted to active roster | | | Before |
| 6/1/1977 | CRU | Hume | Promoted to active roster | | | Before |
| 6/1/1977 | CRU | Jones,Ri | Demoted to reserve roster | | | Before |
| 6/1/1977 | CRU | Jones,Ri | Promoted to active roster | | | Before |
| 6/1/1977 | CRU | Medich | Demoted to reserve roster | | | Before |
| 6/1/1977 | EKL | Coleman,J | Demoted to reserve roster | | | Before |
| 6/1/1977 | EKL | Coleman,J | Promoted to active roster | | | Before |
| 6/1/1977 | FOR | Borgmann | Demoted to reserve roster | | | Before |
| 6/1/1977 | FOR | Doyle | Demoted to reserve roster | | | Before |
| 6/1/1977 | FOR | Doyle | Promoted to active roster | | | Before |
| 6/1/1977 | FOR | Freed | Demoted to reserve roster | | | Before |
| 6/1/1977 | FOR | Johnson,DA | Demoted to reserve roster | | | Before |
| 6/1/1977 | FOR | Johnson,DA | Promoted to active roster | | | Before |
| 6/1/1977 | FOR | Kusick | Promoted to active roster | | | Before |
| 6/1/1977 | FOR | Messersmith | Promoted to active roster | | | Before |
| 6/1/1977 | FOR | Nordhagen | Demoted to reserve roster | | | Before |
| 6/1/1977 | FOR | Williams,E | Promoted to active roster | | | Before |
| 6/1/1977 | LAA | McKinney | Signed | | | Before |
| 6/1/1977 | LAA | Thomas,Da | Released | | | Before |
| 6/1/1977 | ROY | Cox,L | Demoted to reserve roster | | | Before |
| 6/1/1977 | ROY | Hampton | Signed | | | Before |
| 6/1/1977 | ROY | Hampton | Promoted to active roster | | | Before |
| 6/1/1977 | ROY | Rojas | Released | | | Before |
| 6/1/1977 | SPK | Aase | Demoted to reserve roster | | | Before |
| 6/1/1977 | SPK | Aase | Promoted to active roster | | | Before |
| 6/1/1977 | SPK | Aase | Promoted to active roster | | | Before |
| 6/1/1977 | SPK | Camp | Demoted to reserve roster | | | Before |
| 6/1/1977 | SPK | Haney | Demoted to reserve roster | | | Before |
| 6/1/1977 | SPK | Haney | Promoted to active roster | | | Before |
| 6/1/1977 | WIN | Brett,K | Demoted to reserve roster | | | Before |
| 6/1/1977 | WIN | Brett,K | Promoted to active roster | | | Before |
| 6/1/1977 | WIN | Dues | Promoted to active roster | | | Before |
| 6/1/1977 | WIN | Iorg | Promoted to active roster | | | Before |
| 6/1/1977 | WIN | Sarmiento | Demoted to reserve roster | | | Before |
| 6/1/1977 | WIN | Staiger | Demoted to reserve roster | | | Before |
| 6/6/1977 | BEA | Kelleher | Promoted to active roster | | | Before |
| 6/6/1977 | BEA | Milbourne | Demoted to reserve roster | | | Before |
| 6/6/1977 | CRU | Hume | Demoted to reserve roster | | | Before |
| 6/6/1977 | CRU | Medich | Promoted to active roster | | | Before |
| 6/6/1977 | EKL | Coleman,J | Promoted to active roster | | | Before |
| 6/6/1977 | EKL | Knight | Demoted to reserve roster | | | Before |
| 6/6/1977 | EKL | Knight | Promoted to active roster | | | Before |
| 6/6/1977 | EKL | Monge | Demoted to reserve roster | | | Before |
| 6/6/1977 | EKL | Monge | Promoted to active roster | | | Before |
| 6/6/1977 | EKL | Sosa | Demoted to reserve roster | | | Before |
| 6/6/1977 | WIN | Bruno | Demoted to reserve roster | | | Before |
| 6/6/1977 | WIN | Sarmiento | Promoted to active roster | | | Before |
| 6/7/1977 | CAR | Figueroa | Demoted to reserve roster | | | Before |
| 6/7/1977 | CAR | Garrett | Promoted to active roster | | | Before |
| 6/7/1977 | CAR | Grich | Demoted to reserve roster | | | Before |
| 6/7/1977 | CAR | Hunter | Promoted to active roster | | | Before |
| 6/7/1977 | CAR | Ivie | Demoted to reserve roster | | | Before |
| 6/7/1977 | CAR | McGregor | Promoted to active roster | | | Before |
| 6/7/1977 | CAR | Newman | Promoted to active roster | | | Before |
| 6/7/1977 | CAR | Wockenfuss | Demoted to reserve roster | | | Before |
| 6/7/1977 | DAY | Gaston | Promoted to active roster | | | Before |
| 6/7/1977 | DAY | Rudi | Demoted to reserve roster | | | Before |
| 6/7/1977 | EKL | Cruz,J | Demoted to reserve roster | | | Before |
| 6/7/1977 | EKL | Knight | Promoted to active roster | | | Before |
| 6/7/1977 | ELE | Cort | Promoted to active roster | | | Before |
| 6/7/1977 | ELE | Gullett | Demoted to reserve roster | | | Before |
| 6/7/1977 | LAA | Apodaca | Demoted to reserve roster | | | Before |
| 6/7/1977 | LAA | McKinney | Promoted to active roster | | | Before |
| 6/7/1977 | MOB | Capilla | Demoted to reserve roster | | | Before |
| 6/7/1977 | MOB | Hanna | Promoted to active roster | | | Before |
| 6/7/1977 | MOB | Moskau | Demoted to reserve roster | | | Before |
| 6/7/1977 | MOB | Torrealba | Promoted to active roster | | | Before |
| 6/7/1977 | SEA | Soto | Placed on Injured List | | 6/8/1977 | Before |
| 6/12/1977 | CAR | Figueroa | Promoted to active roster | | | Before |
| 6/12/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 6/12/1977 | CAR | Grich | Promoted to active roster | | | Before |
| 6/12/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 6/12/1977 | CAR | Hunter | Promoted to active roster | | | Before |
| 6/12/1977 | CAR | Ivie | Promoted to active roster | | | Before |
| 6/12/1977 | CAR | Lewallyn | Demoted to reserve roster | | | Before |
| 6/12/1977 | CAR | Lewallyn | Promoted to active roster | | | Before |
| 6/12/1977 | CAR | Littell | Demoted to reserve roster | | | Before |
| 6/12/1977 | CAR | Newman | Demoted to reserve roster | | | Before |
| 6/12/1977 | CAR | Smalley | Demoted to reserve roster | | | Before |
| 6/12/1977 | CAR | Wockenfuss | Promoted to active roster | | | Before |
| 6/12/1977 | DAY | Brock | Promoted to active roster | | | Before |
| 6/12/1977 | DAY | Gaston | Demoted to reserve roster | | | Before |
| 6/12/1977 | ELE | Denny | Demoted to reserve roster | | | Before |
| 6/12/1977 | ELE | Gullett | Promoted to active roster | | | Before |
| 6/12/1977 | GLA | Fidrych | Demoted to reserve roster | | | Before |
| 6/12/1977 | GLA | Frost | Demoted to reserve roster | | | Before |
| 6/12/1977 | GLA | Krukow | Promoted to active roster | | | Before |
| 6/12/1977 | GLA | Tiant | Promoted to active roster | | | Before |
| 6/12/1977 | MOB | Capilla | Promoted to active roster | | | Before |
| 6/12/1977 | MOB | Pruitt | Demoted to reserve roster | | | Before |
| 6/13/1977 | DCS | Abbott | Demoted to reserve roster | | | Before |
| 6/13/1977 | DCS | Moore,D | Promoted to active roster | | | Before |
| 6/13/1977 | EKL | Cruz,J | Promoted to active roster | | | Before |
| 6/13/1977 | EKL | Haas | Demoted to reserve roster | | | Before |
| 6/13/1977 | EKL | Honeycutt | Promoted to active roster | | | Before |
| 6/13/1977 | EKL | Mahler | Promoted to active roster | | | Before |
| 6/13/1977 | EKL | Owchinko | Demoted to reserve roster | | | Before |
| 6/13/1977 | EKL | Wills | Demoted to reserve roster | | | Before |
| 6/13/1977 | FOR | Cruz,J | Demoted to reserve roster | | | Before |
| 6/13/1977 | FOR | Dixon | Demoted to reserve roster | | | Before |
| 6/13/1977 | FOR | Doyle | Promoted to active roster | | | Before |
| 6/13/1977 | FOR | Messersmith | Promoted to active roster | | | Before |
| 6/13/1977 | FOR | Nordhagen | Demoted to reserve roster | | | Before |
| 6/13/1977 | FOR | Paciorek | Promoted to active roster | | | Before |
| 6/13/1977 | GLA | Healy | Signed | | | Before |
| 6/13/1977 | GLA | Zeber | Released | | | Before |
| 6/13/1977 | PBS | Knapp | Demoted to reserve roster | | | Before |
| 6/13/1977 | PBS | Waits | Promoted to active roster | | | Before |
| 6/13/1977 | SPK | Burke,S | Demoted to reserve roster | | | Before |
| 6/13/1977 | SPK | Burke,S | Promoted to active roster | | | Before |
| 6/13/1977 | SPK | Burke,S | Placed on Injured List | | 6/19/1977 | Before |
| 6/13/1977 | SPK | Chaney | Promoted to active roster | | | Before |
| 6/13/1977 | SPK | Macha | Demoted to reserve roster | | | Before |
| 6/13/1977 | SPK | Marshall | Promoted to active roster | | | Before |
| 6/13/1977 | WIN | Brett,K | Promoted to active roster | | | Before |
| 6/13/1977 | WIN | Dues | Demoted to reserve roster | | | Before |
| 6/13/1977 | WIN | Dues | Promoted to active roster | | | Before |
| 6/13/1977 | WIN | Iorg | Demoted to reserve roster | | | Before |
| 6/13/1977 | WIN | Iorg | Promoted to active roster | | | Before |
| 6/13/1977 | WIN | Iorg | Demoted to reserve roster | | | Before |
| 6/13/1977 | WIN | Lemon | Demoted to reserve roster | | | Before |
| 6/13/1977 | WIN | Lemon | Promoted to active roster | | | Before |
| 6/13/1977 | WIN | Sarmiento | Demoted to reserve roster | | | Before |
| 6/13/1977 | WIN | Staiger | Promoted to active roster | | | Before |
| 6/13/1977 | WWM | Giusti | Demoted to reserve roster | | | Before |
| 6/13/1977 | WWM | Lonborg | Promoted to active roster | | | Before |
| 6/15/1977 | GLA | Taylor | Demoted to reserve roster | | | Before |
| 6/17/1977 | GLA | Healy | Promoted to active roster | | | Before |
| 6/17/1977 | GLA | Taylor | Released | | | Before |
| 6/17/1977 | GLA | Thomas,Da | Signed | | | Before |
| 6/17/1977 | GLA | Wathan | Demoted to reserve roster | | | Before |
| 6/17/1977 | GLA | Wathan | Promoted to active roster | | | Before |
| 6/17/1977 | SPK | Aase | Demoted to reserve roster | | | Before |
| 6/17/1977 | SPK | Camp | Promoted to active roster | | | Before |
| 6/17/1977 | SPK | Grote | Demoted to reserve roster | | | Before |
| 6/17/1977 | SPK | Holtzman | Promoted to active roster | | | Before |
| 6/17/1977 | SPK | Macha | Promoted to active roster | | | Before |
| 6/17/1977 | SPK | Marshall | Demoted to reserve roster | | | Before |
| 6/19/1977 | CAR | Garrett | Promoted to active roster | | | Before |
| 6/19/1977 | CAR | Grich | Demoted to reserve roster | | | Before |
| 6/19/1977 | CAR | Ivie | Demoted to reserve roster | | | Before |
| 6/19/1977 | CAR | Littell | Promoted to active roster | | | Before |
| 6/19/1977 | CAR | Newman | Promoted to active roster | | | Before |
| 6/19/1977 | CAR | Rettenmund | Promoted to active roster | | | Before |
| 6/19/1977 | CAR | Smalley | Promoted to active roster | | | Before |
| 6/19/1977 | CAR | Sorensen | Demoted to reserve roster | | | Before |
| 6/19/1977 | CAR | Underwood | Demoted to reserve roster | | | Before |
| 6/19/1977 | CAR | Wockenfuss | Demoted to reserve roster | | | Before |
| 6/19/1977 | CRU | Hume | Promoted to active roster | | | Before |
| 6/19/1977 | CRU | Medich | Demoted to reserve roster | | | Before |
| 6/19/1977 | EKL | Haas | Promoted to active roster | | | Before |
| 6/19/1977 | EKL | Honeycutt | Demoted to reserve roster | | | Before |
| 6/19/1977 | EKL | Knight | Demoted to reserve roster | | | Before |
| 6/19/1977 | EKL | Mahler | Demoted to reserve roster | | | Before |
| 6/19/1977 | EKL | Owchinko | Promoted to active roster | | | Before |
| 6/19/1977 | EKL | Sosa | Promoted to active roster | | | Before |
| 6/19/1977 | EKL | Wills | Promoted to active roster | | | Before |
| 6/19/1977 | FOR | Dixon | Promoted to active roster | | | Before |
| 6/19/1977 | FOR | Messersmith | Demoted to reserve roster | | | Before |
| 6/19/1977 | SPK | Grote | Promoted to active roster | | | Before |
| 6/19/1977 | SPK | Holtzman | Demoted to reserve roster | | | Before |
| 6/19/1977 | WIN | Alston | Promoted to active roster | | | Before |
| 6/19/1977 | WIN | Brett,K | Demoted to reserve roster | | | Before |
| 6/19/1977 | WIN | Bruno | Promoted to active roster | | | Before |
| 6/19/1977 | WIN | Staiger | Demoted to reserve roster | | | Before |
| 6/24/1977 | BEA | Armbrister | Demoted to reserve roster | | | Before |
| 6/24/1977 | BEA | Armbrister | Promoted to active roster | | | Before |
| 6/24/1977 | BEA | Armbrister | Placed on Injured List | | 6/25/1977 | Before |
| 6/24/1977 | CAR | Garrett | Demoted to reserve roster | | | Before |
| 6/24/1977 | CAR | Halicki | Demoted to reserve roster | | | Before |
| 6/24/1977 | CAR | Halicki | Promoted to active roster | | | Before |
| 6/24/1977 | CAR | Hunter | Demoted to reserve roster | | | Before |
| 6/24/1977 | CAR | Ivie | Promoted to active roster | | | Before |
| 6/24/1977 | CAR | Newman | Demoted to reserve roster | | | Before |
| 6/24/1977 | CAR | Rettenmund | Demoted to reserve roster | | | Before |
| 6/24/1977 | CAR | Sorensen | Promoted to active roster | | | Before |
| 6/24/1977 | CAR | Underwood | Promoted to active roster | | | Before |
| 6/24/1977 | CAR | Wockenfuss | Promoted to active roster | | | Before |
| 6/24/1977 | CRU | Hume | Demoted to reserve roster | | | Before |
| 6/24/1977 | CRU | Medich | Promoted to active roster | | | Before |
| 6/24/1977 | EKL | Honeycutt | Demoted to reserve roster | | | Before |
| 6/24/1977 | EKL | Knight | Demoted to reserve roster | | | Before |
| 6/24/1977 | EKL | Mahler | Demoted to reserve roster | | | Before |
| 6/24/1977 | EKL | Owchinko | Promoted to active roster | | | Before |
| 6/24/1977 | EKL | Sosa | Promoted to active roster | | | Before |
| 6/24/1977 | EKL | Wills | Promoted to active roster | | | Before |
| 6/24/1977 | SEA | Ellis,J | Demoted to reserve roster | | | Before |
| 6/24/1977 | SEA | Ellis,J | Promoted to active roster | | | Before |
| 6/24/1977 | SEA | Ellis,J | Placed on Injured List | | 6/25/1977 | Before |
| 6/24/1977 | WIN | Alston | Released | | | Before |
| 6/24/1977 | WIN | Alston | Demoted to reserve roster | | | Before |
| 6/24/1977 | WIN | Bruno | Demoted to reserve roster | | | Before |
| 6/24/1977 | WIN | Iorg | Promoted to active roster | | | Before |
| 6/24/1977 | WIN | Lahoud | Signed | | | Before |
| 6/24/1977 | WIN | Sarmiento | Promoted to active roster | | | Before |
| 9/30/1977 | MOB | Brown,O | Demoted to reserve roster | | | Before |
| 9/30/1977 | MOB | Freisleben | Demoted to reserve roster | | | Before |
| 9/30/1977 | MOB | Heise | Demoted to reserve roster | | | Before |
| 9/30/1977 | MOB | Heise | Promoted to active roster | | | Before |
| 9/30/1977 | MOB | Morales,Jo | Demoted to reserve roster | | | Before |
| 9/30/1977 | MOB | Randall | Demoted to reserve roster | | | Before |
| 8/16/2025 | DCS | Flynn | Traded away | SEA | | After |
| 8/16/2025 | DCS | Mayberry | Acquired via trade | SEA | | After |
| 8/16/2025 | DCS | Montague | Traded away | SEA | | After |
| 8/16/2025 | DCS | Morgan | Acquired via trade | SEA | | After |
| 8/16/2025 | DCS | Scott,T | Traded away | SEA | | After |
| 8/16/2025 | LAA | Perry | Acquired via trade | SEA | | After |
| 8/16/2025 | ROY | Allen | Acquired via trade | SEA | | After |
| 8/16/2025 | ROY | Nolan,J | Traded away | SEA | | After |
| 8/16/2025 | SEA | Allen | Traded away | ROY | | After |
| 8/16/2025 | SEA | Demery | Acquired via trade | WIN | | After |
| 8/16/2025 | SEA | Essian | Acquired via trade | SPK | | After |
| 8/16/2025 | SEA | Flynn | Acquired via trade | DCS | | After |
| 8/16/2025 | SEA | LaCock | Acquired via trade | WIN | | After |
| 8/16/2025 | SEA | Lavelle | Traded away | SPK | | After |
| 8/16/2025 | SEA | Mayberry | Traded away | DCS | | After |
| 8/16/2025 | SEA | Montague | Acquired via trade | DCS | | After |
| 8/16/2025 | SEA | Morgan | Traded away | DCS | | After |
| 8/16/2025 | SEA | Nolan,J | Acquired via trade | ROY | | After |
| 8/16/2025 | SEA | Perry | Traded away | LAA | | After |
| 8/16/2025 | SEA | Scott,T | Acquired via trade | DCS | | After |
| 8/16/2025 | SEA | Simmons | Traded away | WIN | | After |
| 8/16/2025 | SEA | Smith,R | Traded away | WIN | | After |
| 8/16/2025 | SEA | Stearns | Traded away | SPK | | After |
| 8/16/2025 | SEA | Stearns | Acquired via trade | WIN | | After |
| 8/16/2025 | SEA | Wynn | Acquired via trade | WIN | | After |
| 8/16/2025 | SPK | Essian | Traded away | SEA | | After |
| 8/16/2025 | SPK | Lavelle | Acquired via trade | SEA | | After |
| 8/16/2025 | SPK | Stearns | Acquired via trade | SEA | | After |
| 8/16/2025 | WIN | Demery | Traded away | SEA | | After |
| 8/16/2025 | WIN | LaCock | Traded away | SEA | | After |
| 8/16/2025 | WIN | Simmons | Acquired via trade | SEA | | After |
| 8/16/2025 | WIN | Smith,R | Acquired via trade | SEA | | After |
| 8/16/2025 | WIN | Stearns | Traded away | SEA | | After |
| 8/16/2025 | WIN | Wynn | Traded away | SEA | | After |
| 8/17/2025 | CRU | Tyson | Traded away | ELE | | After |
| 8/17/2025 | EKL | Garr | Traded away | GLA | | After |
| 8/17/2025 | EKL | Johnson,To | Traded away | GLA | | After |
| 8/17/2025 | EKL | Knapp | Acquired via trade | ELE | | After |
| 8/17/2025 | EKL | Rodriguez,A | Acquired via trade | GLA | | After |
| 8/17/2025 | EKL | Staub | Acquired via trade | GLA | | After |
| 8/17/2025 | ELE | Knapp | Traded away | EKL | | After |
| 8/17/2025 | ELE | Tyson | Acquired via trade | CRU | | After |
| 8/17/2025 | GLA | Bando | Acquired via trade | SEA | | After |
| 8/17/2025 | GLA | Fidrych | Acquired via trade | SEA | | After |
| 8/17/2025 | GLA | Garr | Acquired via trade | EKL | | After |
| 8/17/2025 | GLA | Johnson,To | Acquired via trade | EKL | | After |
| 8/17/2025 | GLA | Mankowski | Traded away | SEA | | After |
| 8/17/2025 | GLA | Rodriguez,A | Traded away | EKL | | After |
| 8/17/2025 | GLA | Russell | Acquired via trade | SEA | | After |
| 8/17/2025 | GLA | Staub | Traded away | EKL | | After |
| 8/17/2025 | GLA | Todd,J | Traded away | SEA | | After |
| 8/17/2025 | GLA | Valentine,B | Traded away | SEA | | After |
| 8/17/2025 | GLA | White,R | Acquired via trade | SEA | | After |
| 8/17/2025 | SEA | Bando | Traded away | GLA | | After |
| 8/17/2025 | SEA | Fidrych | Traded away | GLA | | After |
| 8/17/2025 | SEA | Mankowski | Acquired via trade | GLA | | After |
| 8/17/2025 | SEA | Russell | Traded away | GLA | | After |
| 8/17/2025 | SEA | Todd,J | Acquired via trade | GLA | | After |
| 8/17/2025 | SEA | Valentine,B | Acquired via trade | GLA | | After |
| 8/17/2025 | SEA | White,R | Traded away | GLA | | After |
| 8/18/2025 | BEA | Sanguillen | Acquired via trade | ROY | | After |
| 8/18/2025 | ROY | Sanguillen | Traded away | BEA | | After |
| 8/19/2025 | BEA | Armbrister | Acquired via trade | FOR | | After |
| 8/19/2025 | BEA | Chaney | Traded away | FOR | | After |
| 8/19/2025 | BEA | Williams,E | Traded away | FOR | | After |
| 8/19/2025 | FOR | Armbrister | Traded away | BEA | | After |
| 8/19/2025 | FOR | Chaney | Acquired via trade | BEA | | After |
| 8/19/2025 | FOR | Williams,E | Acquired via trade | BEA | | After |
| 8/20/2025 | CAR | Whitfield | Traded away | CRU | | After |
| 8/20/2025 | CRU | Brohamer | Acquired via trade | ROY | | After |
| 8/20/2025 | CRU | Mackanin | Acquired via trade | SPK | | After |
| 8/20/2025 | CRU | Whitfield | Acquired via trade | CAR | | After |
| 8/20/2025 | ROY | Brohamer | Traded away | CRU | | After |
| 8/20/2025 | SPK | Mackanin | Traded away | CRU | | After |
| 9/1/2025 | ROY | Castro | Traded away | SPK | | After |
| 9/1/2025 | SPK | Castro | Acquired via trade | ROY | | After |
| 9/12/2025 | EKL | Matlack | Acquired via trade | ROY | | After |
| 9/12/2025 | ROY | Matlack | Traded away | EKL | | After |
| 9/14/2025 | COL | Braun | Traded away | SEA | | After |
| 9/14/2025 | SEA | Braun | Acquired via trade | COL | | After |
| 9/14/2025 | SEA | Spencer | Acquired via trade | SPK | | After |
| 9/14/2025 | SPK | Spencer | Traded away | SEA | | After |
| 9/17/2025 | FOR | Chaney | Traded away | SPK | | After |
| 9/17/2025 | SPK | Chaney | Acquired via trade | FOR | | After |
| 9/20/2025 | EKL | Hampton | Acquired via trade | WWM | | After |
| 9/20/2025 | EKL | Rooker | Traded away | WWM | | After |
| 9/20/2025 | WWM | Hampton | Traded away | EKL | | After |
| 9/20/2025 | WWM | Rooker | Acquired via trade | EKL | | After |
| 9/28/2025 | DAY | Augustine | Acquired via trade | SPK | | After |
| 9/28/2025 | DAY | Colborn | Traded away | SPK | | After |
| 9/28/2025 | SPK | Augustine | Traded away | DAY | | After |
| 9/28/2025 | SPK | Colborn | Acquired via trade | DAY | | After |