Mets Roster & Staff
Transactions
| Date | Transaction |
| 07/18/26 | New York Mets sent RHP Clay Holmes on a rehab assignment to Brooklyn Cyclones. |
| 07/18/26 | New York Mets acquired RHP Rafi Vazquez from the Southern Maryland Blue Crabs of the Atlantic League. |
| 07/17/26 | New York Mets sent CF Luis Robert Jr. on a rehab assignment to Syracuse Mets. |
| 07/16/26 | New York Mets signed free agent RHP Sam Carlisle to a minor league contract. |
| 07/16/26 | New York Mets signed free agent OF Keegan O'Hearn to a minor league contract. |
| 07/16/26 | New York Mets designated SS Zack Short for assignment. |
| 07/16/26 | New York Mets activated 2B Marcus Semien from the 10-day injured list. |
| 07/15/26 | New York Mets signed free agent RHP Carson Wiggins to a minor league contract. |
| 07/15/26 | New York Mets sent RHP Dedniel Núñez on a rehab assignment to FCL Mets. |
| 07/14/26 | New York Mets sent RHP Dan Hammer outright to Syracuse Mets. |
| 07/12/26 | New York Mets sent 2B Marcus Semien on a rehab assignment to Binghamton Rumble Ponies. |
| 07/12/26 | New York Mets sent 2B Marcus Semien on a rehab assignment to Binghamton Rumble Ponies. |
| 07/12/26 | New York Mets sent 2B Marcus Semien on a rehab assignment to Binghamton Rumble Ponies. |
| 07/12/26 | New York Mets recalled LHP Zach Thornton from Syracuse Mets. |
| 07/12/26 | New York Mets optioned RHP Tobias Myers to Syracuse Mets. |
| 07/11/26 | New York Mets released CF Jared Oliva. |
| 07/11/26 | New York Mets sent RHP Matt Seelinger outright to Syracuse Mets. |
| 07/10/26 | New York Mets placed 1B Mark Vientos on the 10-day injured list. Right hand fracture. |
| 07/10/26 | New York Mets designated RHP Dan Hammer for assignment. |
| 07/10/26 | New York Mets selected the contract of SS Zack Short from Syracuse Mets. |
| 07/10/26 | New York Mets recalled RHP Tobias Myers from Syracuse Mets. |
| 07/09/26 | New York Mets released RHP Alex Carrillo. |
| 07/09/26 | New York Mets designated CF Jared Oliva for assignment. |
| 07/09/26 | New York Mets optioned RHP Tobias Myers to Syracuse Mets. |
| 07/09/26 | New York Mets selected the contract of RHP Dan Hammer from Syracuse Mets. |
| 07/09/26 | New York Mets sent RHP Guillo Zuñiga outright to Syracuse Mets. |
| 07/08/26 | New York Mets sent CF Luis Robert Jr. on a rehab assignment to Binghamton Rumble Ponies. |
| 07/08/26 | New York Mets placed RHP Austin Warren on the 15-day injured list. Right forearm strain. |
| 07/08/26 | New York Mets designated RHP Matt Seelinger for assignment. |
| 07/08/26 | New York Mets sent RHP Dedniel Núñez on a rehab assignment to Syracuse Mets. |
| 07/08/26 | New York Mets selected the contract of RHP Xzavion Curry from Syracuse Mets. |
| 07/08/26 | New York Mets recalled RHP Tobias Myers from Syracuse Mets. |
| 07/07/26 | New York Mets activated 1B Jorge Polanco from the 60-day injured list. |
| 07/07/26 | New York Mets designated RHP Alex Carrillo for assignment. |
| 07/07/26 | New York Mets designated RHP Guillo Zuñiga for assignment. |
| 07/07/26 | New York Mets activated DH Jorge Polanco from the 60-day injured list. |
| 07/07/26 | New York Mets optioned SS Ronny Mauricio to Syracuse Mets. |
| 07/07/26 | New York Mets selected the contract of RHP Matt Seelinger from Syracuse Mets. |
| 07/05/26 | New York Mets optioned RHP Joey Gerber to Syracuse Mets. |
| 07/05/26 | New York Mets selected the contract of RHP Guillo Zuñiga from Syracuse Mets. |
| 07/05/26 | Detroit Tigers traded RHP Matt Seelinger to New York Mets for cash. |
| 07/02/26 | New York Mets sent RHP Dedniel Núñez on a rehab assignment to Binghamton Rumble Ponies. |
| 07/02/26 | New York Mets sent RHP Dedniel Núñez on a rehab assignment to Binghamton Rumble Ponies. |
| 07/02/26 | New York Mets optioned LHP Jefry Yan to Syracuse Mets. |
| 07/02/26 | New York Mets selected the contract of LHP Jefry Yan from Syracuse Mets. |
| 07/01/26 | New York Mets signed free agent 1B Christopher Morel to a minor league contract. |