| | P | Sent to Minors (The New York Mets optioned RHP Grant Hartwig to the minors.) |
| | SS | Released (The New York Mets released INF Joey Wendle.) |
| | P | Traded (The New York Mets traded RHP Yohan Ramirez to the Los Angeles Dodgers.) To |
| | P | Activated (The New York Mets activated RHP Tylor Megill from the 15-day injured list.) |
| | P | Claimed on Unconditional Release Waivers (The New York Mets claimed RHP Matt Festa off waivers.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled LHP Josh Walker from the minors.) |
| | P | Sent to Minors (The New York Mets optioned LHP Joey Lucchesi to the minors.) |
| | P | Designated for Assignment (The New York Mets designated RHP Yohan Ramírez for assignment.) |
| | SS | Designated for Assignment (The New York Mets designated INF Joey Wendle for assignment.) |
| | 3B | Recalled From Minors Rehab (The New York Mets recalled INF Mark Vientos from the minors.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Grant Hartwig from the minors.) |
| | P | Sent to Minors (The New York Mets optioned RHP José Buttó to the minors.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled LHP Joey Lucchesi from the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Max Kranick outright to the minors.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Shintaro Fujinami from the minors.) |
| | P | Placed on 15-Day IL (The New York Mets placed RHP Shintaro Fujinami on the 15-day injured list with a shoulder strain.) |
| | P | Activated (The New York Mets activated RHP Yohan Ramírez.) |
| | P | Sent to Minors (The New York Mets optioned RHP Cole Sulser to the minors.) |
Jake Stevenson | | P | Signed (The New York Mets signed RHP Jake Stevenson to a minor league contract.) |
| | P | Designated for Assignment (The New York Mets designated RHP Max Kranick for assignment.) |
| | P | Claimed on Unconditional Release Waivers (The New York Mets claimed RHP Yohan Ramírez from the Baltimore Orioles.) |
| | P | Sent to Minors (The New York Mets optioned LHP Danny Young to the minors.) |
| | P | Recalled From Minors Rehab (The New York Mets selected the contract of RHP Christian Scott from the minors.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Cole Sulser from the minors.) |
| | P | Sent to Minors (The New York Mets optioned RHP Dedniel Núñez to the minors.) |
| | 3B | Traded (The New York Mets traded INF Zack Short to the Boston Red Sox.) To |
| | CF | Released (The New York Mets released OF Taylor Kohlwey.) |
| | 3B | Sent to Minors (The New York Mets optioned INF Mark Vientos to the minors.) |
| | RF | Activated (The New York Mets activated OF Starling Marte from the bereavement list.) |
| | 3B | Signed (The New York Mets signed INF Mike Brosseau to a minor league contract.) |
| | P | Recalled From Minors Rehab (The New York Mets selected the contract of LHP Danny Young from the minors.) |
| | P | Sent to Minors (The New York Mets optioned LHP Josh Walker to the minors.) |
| | 3B | Recalled From Minors Rehab (The New York Mets recalled INF Mark Vientos from the minors.) |
| | RF | Placed on Bereavement/Family Medical Emergency List (The New York Mets placed OF Starling Marte on the bereavement list.) |
| | P | Placed on 15-Day IL (The New York Mets placed RHP Drew Smith on the 15-day injured list with an undisclosed injury.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Dedniel Núñez from the minors.) |
| | 3B | Designated for Assignment (The New York Mets designated INF Zack Short for assignment.) |
| | DH | Recalled From Minors Rehab (The New York Mets recalled DH J.D. Martinez from the minors.) |
| | P | Waived (The New York Mets waived RHP Michael Tonkin.) |
| | P | Sent to Minors (The New York Mets optioned RHP Max Kranick to the minors.) |
| | P | Activated (The New York Mets activated RP Max Kranick off the 15-day injured list and optioned him to the minors.) |
| | P | Activated (The New York Mets activated RHP Sean Reid-Foley from the 15-day injured list.) |
| | P | Sent to Minors (The New York Mets optioned RHP Grant Hartwig to the minors.) |
| | P | Designated for Assignment (The New York Mets designated RHP Michael Tonkin for assignment.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled LHP Josh Walker from the minors.) |
| | P | Placed on 15-Day IL (The New York Mets placed LHP Brooks Raley on the 15-day injured list with elbow inflammation.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Grant Hartwig from the minors.) |
| | C | Recalled From Minors Rehab (The New York Mets selected the contract of C Tomás Nido from the minors.) |
| | P | Designated for Assignment (The New York Mets designated LHP Kolton Ingram for assignment.) |
| | C | Placed on 15-Day IL (The New York Mets placed C Francisco Alvarez on the 10-day injured list with a thumb injury.) |
| | P | Activated (The New York Mets activated RP Michael Tonkin.) |
| | P | Sent to Minors (The New York Mets optioned RHP Grant Hartwig to the minors.) |
| | P | Claimed on Unconditional Release Waivers (The New York Mets claimed RHP Michael Tonkin off waivers from the Minnesota Twins.) |
| | P | Designated for Assignment (The New York Mets designated LHP Tyler Jay for assignment.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RP Grant Hartwig from the minors.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Jose Butto from the minors.) |
| | P | Sent to Minors (The New York Mets assigned RP Cole Sulser to the minors.) |
| | P | Sent to Minors (The New York Mets assigned RP Tyler Jay to the minors.) |
| | P | Released (The New York Mets released RHP Julio Teheran.) |
| | P | Traded (The New York Mets traded RHP Yohan Ramírez to the Baltimore Orioles.) To |
| | P | Recalled From Minors Rehab (The New York Mets selected the contract of LHP Tyler Jay from the minors.) |
| | P | Sent to Minors (The New York Mets optioned RHP Dedniel Núñez to the minors.) |
| | P | Placed on 60-Day IL (The New York Mets transferred RHP Kodai Senga from the 15-day injured list to the 60-day injured list.) |
| | P | Designated for Assignment (The New York Mets designated RHP Julio Teheran for assignment.) |
| | P | Recalled From Minors Rehab (The New York Mets selected the contract of RHP Dedniel Núñez from the minors.) |
| | P | Traded (The New York Mets traded RP Michael Tonkin to the Minnesota Twins.) To |
| | P | Designated for Assignment (The New York Mets designated RHP Yohan Ramírez for assignment.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Cole Sulser from the minors.) |
| | P | Designated for Assignment (The New York Mets designated RHP Michael Tonkin for assignment.) |
| | P | Activated (The New York Mets activated RHP Julio Teheran.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP José Buttó from the minors.) |
| | P | Sent to Minors (The New York Mets returned 27th man RHP José Buttó to the minors.) |
| | P | Signed (The New York Mets signed RHP Julio Teheran.) |
| | P | Placed on 15-Day IL (The New York Mets placed RHP Tylor Megill on the 15-day injured list.) |
| | P | Recalled From Minors Rehab (The New York Mets recalled RHP Reed Garrett from the minors.) |
| | P | Placed on 15-Day IL (The New York Mets placed RHP Kodai Senga on the 15-day injured list.) |
| | P | Placed on 15-Day IL (The New York Mets placed RHP Sean Reid-Foley on the 15-day injured list with a shoulder injury.) |
| | P | Placed on 15-Day IL (The New York Mets placed RHP Max Kranick on the 15-day injured list.) |
| | 1B | Released (The New York Mets released INF Luke Voit.) |
| | C | Sent to Minors (The New York Mets sent C Tomás Nido to the minors.) |
| | SS | Sent to Minors (The New York Mets sent INF José Iglesias to the minors.) |
| | C | Sent to Minors (The New York Mets sent C Hayden Senger to the minors.) |
| | P | Released (The New York Mets released RHP Phil Bickford.) |
| | 1B | Sent to Minors (The New York Mets sent INF Ji Man Choi to the minors.) |
| | DH | Sent to Minors (The New York Mets optioned DH J.D. Martinez to the minors.) |
| | 3B | Sent to Minors (The New York Mets optioned INF Mark Vientos to the minors.) |
| | P | Traded (The New York Mets traded RHP Austin Adams to the Oakland Athletics.) To |
| | DH | Signed (The New York Mets signed FA DH J.D. Martinez.) |
| | P | Sent to Minors (The New York Mets optioned RHP Shintaro Fujinami to the minors.) |
| | P | Designated for Assignment (The New York Mets designated RHP Phil Bickford for assignment.) |
| | P | Sent to Minors (The New York Mets sent RHP Austin Adams to the minors.) |
| | DH | Signed (The New York Mets signed DH J.D. Martinez.) |
| | P | Sent to Minors (The New York Mets optioned RHP José Butto to the minors.) |
| | 3B | Sent to Minors (The New York Mets sent INF Yolmer Sánchez to the minors.) |
| | CF | Sent to Minors (The New York Mets sent OF Trayce Thompson to the minors.) |
| | LF | Sent to Minors (The New York Mets sent OF Ben Gamel to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Yacksel Ríos to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Cole Sulser to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Kyle Crick to the minors.) |
| | 2B | Sent to Minors (The New York Mets sent INF Rylan Bannon to the minors.) |
| | P | Sent to Minors (The New York Mets optioned RHP Reed Garrett to the minors.) |
| | P | Sent to Minors (The New York Mets optioned LHP Joey Lucchesi to the minors.) |
| | C | Sent to Minors (The New York Mets sent C Austin Allen to the minors.) |
| | P | Sent to Minors (The New York Mets optioned RHP Grant Hartwig to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Chad Smith to the minors.) |
| | CF | Sent to Minors (The New York Mets optioned OF Alex Ramírez to the minors.) |
| | CF | Sent to Minors (The New York Mets sent OF Taylor Kohlwey to the minors.) |
| | P | Sent to Minors (The New York Mets optioned LHP Josh Walker to the minors.) |
| | P | Sent to Minors (The New York Mets sent LHP Nate Lavender to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Dominic Hamel to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Christian Scott to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Eric Orze to the minors.) |
| | SS | Sent to Minors (The New York Mets sent INF Jett Williams to the minors.) |
| | C | Sent to Minors (The New York Mets sent C Kevin Parada to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Cam Robinson to the minors.) |
| | P | Sent to Minors (The New York Mets optioned LHP Kolton Ingram to the minors.) |
| | CF | Sent to Minors (The New York Mets sent OF Drew Gilbert to the minors.) |
| | P | Sent to Minors (The New York Mets sent LHP Danny Young to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Mike Vasil to the minors.) |
| | SS | Sent to Minors (The New York Mets optioned INF Luisangel Acuña to the minors.) |
| | P | Signed (The New York Mets signed RHP Jon Duplantier to a minor league contract.) |
| | P | Signed (The New York Mets signed RHP Jon Duplantier to a minor league contract.) |
| | P | Placed on 60-Day IL (The New York Mets placed LHP David Peterson on the 60-day injured list.) |
| | P | Claimed on Unconditional Release Waivers (The New York Mets claimed LHP Kolton Ingram off waivers from the Detroit Tigers.) |
| | 1B | Signed (The New York Mets signed INF Ji Man Choi.) |
| | SS | Placed on 60-Day IL (The New York Mets placed INF Ronny Mauricio on the 60-day injured list.) |
| | LF | Non-roster Invitee (The New York Mets signed OF Ben Gamel to a minor league contract with an invitation to spring training.) |
| | P | Sent to Minors (The New York Mets sent RHP Austin Adams outright to the minors.) |
| | P | Non-roster Invitee (The New York Mets invited RHP Austin Adams to spring training.) |
| | P | Designated for Assignment (The New York Mets designated RHP Austin Adams for assignment.) |
| | P | Signed (The New York Mets signed RHP Shintaro Fujinami.) |
| | C | Traded (The New York Mets traded C Tyler Heineman to the Boston Red Sox.) To |
| | P | Signed (The New York Mets signed LHP Jake Diekman.) |
| | 2B | Signed (The New York Mets signed INF José Rondón to a minor league contract.) |
| | 2B | Signed (The New York Mets signed INF José Rondón to a minor league contract.) |
| | C | Designated for Assignment (The New York Mets designated C Tyler Heineman for assignment.) |
| | P | Signed (The New York Mets signed RHP Adam Ottavino.) |
| | P | Non-roster Invitee (The New York Mets signed LHP Danny Young to a minor league contract with an invitation to spring training.) |
| | SS | Designated for Assignment (The New York Mets designated INF Diego Castillo for assignment.) |
| | P | Claimed on Unconditional Release Waivers (The New York Mets claimed RHP Max Kranick from the Pittsburgh Pirates.) |
| | C | Designated for Assignment (The New York Mets designated DH Cooper Hummel for assignment.) |
| | P | Non-roster Invitee (The New York Mets signed RHP Yacksel Ríos to a minor league contract with an invitation to spring training.) |
| | P | Signed (The New York Mets signed LHP Sean Manaea.) |
| | SS | Claimed on Unconditional Release Waivers (The New York Mets claimed INF Diego Castillo off waivers from the Arizona Diamondbacks.) |
| | CF | Signed (The New York Mets signed OF Harrison Bader.) |
| | P | Signed (The New York Mets signed RHP Jorge López.) |
| | P | Signed (The New York Mets signed RHP Michael Tonkin.) |
| | P | Traded (The Boston Red Sox traded LHP Ryan Ammons to the New York Mets.) From |
| | P | Drafted Via Rule 5 (The New York Mets selected RHP Justin Slaten in the Rule 5 Draft.) |
| | P | Traded (The New York Mets traded RHP Justin Slaten to the Boston Red Sox.) To |
| | P | Signed (The New York Mets signed RHP Andre Scrubb to a minor league contract.) |
| | P | Signed (The New York Mets signed RHP Andre Scrubb to a minor league contract.) |
| | C | Claimed on Unconditional Release Waivers (The New York Mets claimed DH Cooper Hummel off waivers.) |
| | P | Signed (The New York Mets signed RHP Kyle Crick to a minor league contract with an invitation to MLB spring training.) |
| | C | Claimed on Unconditional Release Waivers (The New York Mets claimed C Tyler Heineman off waivers from the Toronto Blue Jays.) |
| | P | Signed (The New York Mets signed RHP Austin Adams.) |
| | SS | Signed (The New York Mets signed INF Joey Wendle.) |
| | P | Signed (The New York Mets signed RHP Luis Severino.) |
| | P | Signed (The New York Mets signed RHP Joseph Yabbour to a minor league contract.) |
| | P | Non-roster Invitee (The New York Mets invited non-roster RHP Cole Sulser to spring training.) |
| | P | Signed (The New York Mets signed RHP Carlos Guzman to a minor league contract.) |
| | P | Non-roster Invitee (The New York Mets signed RHP Cole Sulser to a minor league contract with an invitation to spring training.) |
| | DH | Released (The New York Mets released DH Daniel Vogelbach.) |
| | P | Released (The New York Mets released RHP Trevor Gott.) |
| | 2B | Released (The New York Mets released INF Luis Guillorme.) |
| | P | Released (The New York Mets released RHP Jeff Brigham.) |
| | P | Released (The New York Mets released RHP Sam Coonrod.) |
| | CF | Recalled From Minors Rehab (The New York Mets selected the contract of OF Alex Ramírez from the minors.) |
| | P | Declared Free Agency (RHP Connor Grey declared free agency.) |
| | P | Declared Free Agency (RHP Marcel Rentería declared free agency.) |
| | CF | Declared Free Agency (OF Agustin Ruiz declared free agency.) |
| | CF | Declared Free Agency (OF Lorenzo Cedrola declared free agency.) |
| | C | Declared Free Agency (C P.J. Higgins declared free agency.) |
| | P | Declared Free Agency (RHP Jose Chacin declared free agency.) |
| | 1B | Declared Free Agency (INF Daniel Palka declared free agency.) |
| | P | Declared Free Agency (RHP Adam Ottavino declared free agency.) |
| | 3B | Claimed on Unconditional Release Waivers (The New York Mets claimed INF Zack Short off waivers from the Detroit Tigers.) |
| | LF | Activated (The New York Mets activated OF Brandon Nimmo.) |
| | P | Released (The New York Mets released RHP Connor Brandon.) |
| | P | Released (The New York Mets released RHP Cole Gordon.) |
| | P | Activated (The New York Mets activated RHP Sam Coonrod.) |
| | P | Activated (The New York Mets activated LHP Joey Lucchesi.) |
| | P | Activated (The New York Mets activated RHP Jeff Brigham.) |
| | 2B | Activated (The New York Mets activated INF Jeff McNeil.) |
| | P | Activated (The New York Mets activated RHP Sean Reid-Foley.) |
| | SS | Activated (The New York Mets activated INF Luisangel Acuña.) |
| | RF | Activated (The New York Mets activated OF Starling Marte from the 10-day injured list.) |
| | P | Activated (The New York Mets activated RHP Edwin Díaz.) |
| | P | Activated (The New York Mets activated LHP Josh Walker.) |
| | P | Sent to Minors (The New York Mets sent RHP Peyton Battenfield outright to the minors.) |
| | P | Waived (The New York Mets placed RHP Elieser Hernández on outright waivers.) |
| | P | Sent to Minors (The New York Mets sent RHP Bryce Montes de Oca outright to the minors.) |
| | 2B | Declared Free Agency (New York Mets INF José Peraza declared free agency.) |
| | P | Waived (The New York Mets waived RHP John Curtiss.) |
| | P | Waived (The New York Mets placed RHP Denyi Reyes on outright waivers.) |
| | LF | Waived (The New York Mets placed OF Tim Locastro on outright waivers.) |
| | P | Declared Free Agency (New York Mets RHP Carlos Carrasco declared free agency.) |
| | CF | Released (The New York Mets released OF Dyron Campos.) |
| | P | Released (The New York Mets released LHP Luis Rodriguez.) |
| | P | Released (The New York Mets released LHP Matt Minnick.) |
| | CF | Released (The New York Mets released OF Carlos Dominguez.) |
| | C | Released (The New York Mets released C Nick Meyer.) |
| | 2B | Released (The New York Mets released INF Chase Estep.) |
| | P | Claimed on Unconditional Release Waivers (The New York Mets claimed RHP Penn Murfee off waivers from the Seattle Mariners.) |
| | C | Released (The New York Mets released C Fernando Villalobos.) |
| | P | Released (The New York Mets released RHP Ryley Gilliam.) |
| | CF | Declared Free Agency (OF Rafael Ortega declared free agency.) |
| | 3B | Declared Free Agency (INF Danny Mendick declared free agency.) |
| | C | Declared Free Agency (C Michael Pérez declared free agency.) |
| | P | Declared Free Agency (RHP Vinny Nittoli declared free agency.) |
| | 2B | Declared Free Agency (INF Jonathan Araúz declared free agency.) |
| | 2B | Sent to Minors (The New York Mets sent INF Jonathan Araúz outright to the minors.) |
| | CF | Sent to Minors (The New York Mets sent OF Rafael Ortega outright to the minors.) |
| | 3B | Sent to Minors (The New York Mets sent INF Danny Mendick outright to the minors.) |
| | P | Sent to Minors (The New York Mets sent RHP Vinny Nittoli outright to the minors.) |
| | C | Sent to Minors (The New York Mets sent C Michael Pérez outright to the minors.) |