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NYM · 2025 transactions
Data through 2026-10-03
| Date | Player | Type | Detail |
|---|---|---|---|
| Dec 29 | Jun-Seok Shim | Signed as Free Agent | New York Mets signed free agent RHP Jun-Seok Shim to a minor league contract. |
| Dec 23 | Ofreidy Gómez | Signed as Free Agent | New York Mets signed free agent RHP Ofreidy Gómez to a minor league contract. |
| Dec 23 | Tyler Burch | Signed as Free Agent | New York Mets signed free agent RHP Tyler Burch to a minor league contract. |
| Dec 22 | Luke Weaver | Signed as Free Agent | New York Mets signed free agent RHP Luke Weaver. |
| Dec 22 | — | Trade | New York Mets traded 2B Jeff McNeil and cash to Athletics for RHP Yordan Rodriguez. |
| Dec 19 | Brandon Waddell | Outrighted | New York Mets sent LHP Brandon Waddell outright to Syracuse Mets. |
| Dec 18 | Kevin Herget | Status Change | RHP Kevin Herget roster status changed by New York Mets. |
| Dec 18 | Robinson Martínez | Signed as Free Agent | New York Mets signed free agent RHP Robinson Martínez to a minor league contract. |
| Dec 18 | Kevin Herget | Signed as Free Agent | New York Mets signed free agent RHP Kevin Herget to a minor league contract. |
| Dec 17 | Brandon Waddell | Designated for Assignment | New York Mets designated LHP Brandon Waddell for assignment. |
| Dec 17 | Drew Romo | Claimed Off Waivers | New York Mets claimed C Drew Romo off waivers from Baltimore Orioles. |
| Dec 16 | Zach Peek | Signed as Free Agent | New York Mets signed free agent RHP Zach Peek to a minor league contract. |
| Dec 16 | Jorge Polanco | Signed as Free Agent | New York Mets signed free agent 2B Jorge Polanco. |
| Dec 15 | Cristian Pache | Signed as Free Agent | New York Mets signed free agent OF Cristian Pache to a minor league contract and invited him to spring training. |
| Dec 12 | Isaac De La Cruz | Signed as Free Agent | New York Mets signed free agent RHP Isaac De La Cruz to a minor league contract. |
| Dec 11 | Arnaldo Tejeda | Signed as Free Agent | New York Mets signed free agent RHP Arnaldo Tejeda to a minor league contract. |
| Dec 11 | Cristopher Hernandez | Signed as Free Agent | New York Mets signed free agent LHP Cristopher Hernandez to a minor league contract. |
| Dec 10 | Matt Turner | Status Change | LHP Matt Turner roster status changed by New York Mets. |
| Dec 10 | Matt Turner | Rule 5 Draft Minors | New York Mets purchased contract of LHP Matt Turner in the Rule 5 Draft, AAA Phase. |
| Dec 10 | Dylan Tebrake | Rule 5 Draft Minors | Washington Nationals purchased contract of RHP Dylan Tebrake in the Rule 5 Draft, AAA Phase. |
| Dec 10 | Aaron Rozek | Rule 5 Draft Minors | New York Mets purchased contract of LHP Aaron Rozek in the Rule 5 Draft, AAA Phase. |
| Dec 10 | Trey McLoughlin | Rule 5 Draft Minors | Houston Astros purchased contract of RHP Trey McLoughlin in the Rule 5 Draft, AAA Phase. |
| Dec 10 | Justin Armbruester | Rule 5 Draft Minors | New York Mets purchased contract of RHP Justin Armbruester in the Rule 5 Draft, AAA Phase. |
| Dec 10 | TJ Shook | Rule 5 Draft Minors | Colorado Rockies purchased contract of RHP TJ Shook in the Rule 5 Draft, AAA Phase. |
| Dec 8 | Daniel Duarte | Status Change | RHP Daniel Duarte roster status changed by New York Mets. |
| Dec 8 | Carl Edwards Jr. | Status Change | RHP Carl Edwards Jr. roster status changed by New York Mets. |
| Dec 8 | Daniel Duarte | Signed as Free Agent | New York Mets signed free agent RHP Daniel Duarte to a minor league contract. |
| Dec 8 | Carl Edwards Jr. | Signed as Free Agent | New York Mets signed free agent RHP Carl Edwards Jr. to a minor league contract. |
| Dec 5 | Cooper Criswell | Claimed Off Waivers | New York Mets claimed RHP Cooper Criswell off waivers from Boston Red Sox. |
| Dec 3 | Devin Williams | Signed as Free Agent | New York Mets signed free agent RHP Devin Williams. |
| Nov 26 | Jose Ramos | Status Change | CF Jose Ramos roster status changed by New York Mets. |
| Nov 26 | Jose Ramos | Status Change | CF Jose Ramos roster status changed by New York Mets. |
| Nov 26 | Jose Ramos | Status Change | CF Jose Ramos roster status changed by New York Mets. |
| Nov 26 | Jose Ramos | Signed as Free Agent | New York Mets signed free agent CF Jose Ramos to a minor league contract. |
| Nov 26 | Anderson Severino | Signed as Free Agent | New York Mets signed free agent LHP Anderson Severino to a minor league contract. |
| Nov 25 | Robert Stock | Status Change | RHP Robert Stock roster status changed by New York Mets. |
| Nov 25 | Robert Stock | Signed as Free Agent | New York Mets signed free agent RHP Robert Stock to a minor league contract. |
| Nov 24 | — | Trade | New York Mets traded LF Brandon Nimmo and cash to Texas Rangers for 2B Marcus Semien. |
| Nov 21 | Nick Burdi | Status Change | RHP Nick Burdi roster status changed by New York Mets. |
| Nov 21 | Nick Burdi | Signed as Free Agent | New York Mets signed free agent RHP Nick Burdi to a minor league contract. |
| Nov 21 | Danny Young | Declared Free Agency | LHP Danny Young elected free agency. |
| Nov 21 | Max Kranick | Declared Free Agency | RHP Max Kranick elected free agency. |
| Nov 21 | José Castillo | Declared Free Agency | LHP José Castillo elected free agency. |
| Nov 20 | Jodarlin Perez | Signed as Free Agent | New York Mets signed free agent LHP Jodarlin Perez to a minor league contract. |
| Nov 19 | Frankie Montas | Released | New York Mets released RHP Frankie Montas. |
| Nov 18 | Nick Morabito | Selected | New York Mets selected the contract of CF Nick Morabito from Binghamton Rumble Ponies. |
| Nov 18 | Frankie Montas | Designated for Assignment | New York Mets designated RHP Frankie Montas for assignment. |
| Nov 13 | Jackson Cluff | Status Change | SS Jackson Cluff roster status changed by New York Mets. |
| Nov 13 | Jackson Cluff | Signed as Free Agent | New York Mets signed free agent SS Jackson Cluff to a minor league contract. |
| Nov 12 | Nate Lavender | Status Change | LHP Nate Lavender roster status changed by New York Mets. |
| Nov 12 | Nate Lavender | Returned | LHP Nate Lavender returned to New York Mets from Tampa Bay Rays. |
| Nov 10 | Jose Rojas | Status Change | 3B Jose Rojas roster status changed by New York Mets. |
| Nov 10 | Jose Rojas | Signed as Free Agent | New York Mets signed free agent 3B Jose Rojas to a minor league contract. |
| Nov 6 | Nick Madrigal | Declared Free Agency | 3B Nick Madrigal elected free agency. |
| Nov 6 | Tylor Megill | Status Change | New York Mets activated RHP Tylor Megill from the 60-day injured list. |
| Nov 6 | Christian Scott | Status Change | New York Mets activated RHP Christian Scott from the 60-day injured list. |
| Nov 6 | Danny Young | Status Change | New York Mets activated LHP Danny Young from the 60-day injured list. |
| Nov 6 | A.J. Minter | Status Change | New York Mets activated LHP A.J. Minter from the 60-day injured list. |
| Nov 6 | Max Kranick | Status Change | New York Mets activated RHP Max Kranick from the 60-day injured list. |
| Nov 6 | Frankie Montas | Status Change | New York Mets activated RHP Frankie Montas from the 60-day injured list. |
| Nov 6 | Dedniel Núñez | Status Change | New York Mets activated RHP Dedniel Núñez from the 60-day injured list. |
| Nov 6 | José Castillo | Claimed Off Waivers | New York Mets claimed LHP José Castillo off waivers from Baltimore Orioles. |
| Nov 6 | Jihwan Bae | Claimed Off Waivers | New York Mets claimed CF Ji Hwan Bae off waivers from Pittsburgh Pirates. |
| Nov 4 | — | Trade | Tampa Bay Rays traded RHP Joey Gerber to New York Mets for cash. |
| Nov 4 | Pete Alonso | Declared Free Agency | 1B Pete Alonso elected free agency. |
| Nov 4 | Drew Smith | Declared Free Agency | RHP Drew Smith elected free agency. |
| Nov 4 | Edwin Díaz | Declared Free Agency | RHP Edwin Díaz elected free agency. |
| Nov 2 | Griffin Canning | Declared Free Agency | RHP Griffin Canning elected free agency. |
| Nov 2 | Jesse Winker | Declared Free Agency | LF Jesse Winker elected free agency. |
| Nov 2 | Ryne Stanek | Declared Free Agency | RHP Ryne Stanek elected free agency. |
| Nov 2 | Gregory Soto | Declared Free Agency | LHP Gregory Soto elected free agency. |
| Nov 2 | Tyler Rogers | Declared Free Agency | RHP Tyler Rogers elected free agency. |
| Nov 2 | Cedric Mullins | Declared Free Agency | CF Cedric Mullins elected free agency. |
| Nov 2 | Starling Marte | Declared Free Agency | LF Starling Marte elected free agency. |
| Nov 2 | Ryan Helsley | Declared Free Agency | RHP Ryan Helsley elected free agency. |
| Oct 23 | Richard Lovelady | Signed as Free Agent | New York Mets signed free agent LHP Richard Lovelady. |
| Oct 20 | Joe Jacques | Signed as Free Agent | New York Mets signed free agent LHP Joe Jacques to a minor league contract. |
| Oct 17 | Roberto Pena | Signed as Free Agent | New York Mets signed free agent Roberto Pena to a minor league contract. |
| Sep 30 | Jeiser Terrero | Signed as Free Agent | New York Mets signed free agent RHP Jeiser Terrero to a minor league contract. |
| Sep 30 | Randy Guzman | Signed as Free Agent | New York Mets signed free agent RHP Randy Guzman to a minor league contract. |
| Sep 29 | Alsy Torres | Signed as Free Agent | New York Mets signed free agent RHP Alsy Torres to a minor league contract. |
| Sep 29 | Frandy Lora | Signed as Free Agent | New York Mets signed free agent RHP Frandy Lora to a minor league contract. |
| Sep 29 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Sep 29 | Brandon Waddell | Recalled | New York Mets recalled LHP Brandon Waddell from Syracuse Mets. |
| Sep 29 | Hayden Senger | Recalled | New York Mets recalled C Hayden Senger from Syracuse Mets. |
| Sep 29 | Kodai Senga | Recalled | New York Mets recalled RHP Kodai Senga from Syracuse Mets. |
| Sep 29 | Jonathan Pintaro | Recalled | New York Mets recalled RHP Jonathan Pintaro from Syracuse Mets. |
| Sep 29 | Justin Hagenman | Recalled | New York Mets recalled RHP Justin Hagenman from Syracuse Mets. |
| Sep 29 | Alex Carrillo | Recalled | New York Mets recalled RHP Alex Carrillo from Syracuse Mets. |
| Sep 29 | Reed Garrett | Status Change | New York Mets activated RHP Reed Garrett from the 15-day injured list. |
| Sep 29 | Brett Baty | Status Change | New York Mets activated 3B Brett Baty from the 10-day injured list. |
| Sep 29 | Kevin Herget | Outrighted | New York Mets sent RHP Kevin Herget outright to Syracuse Mets. |
| Sep 27 | Richard Lovelady | Outrighted | New York Mets sent LHP Richard Lovelady outright to Syracuse Mets. |
| Sep 27 | Jose Siri | Outrighted | New York Mets sent CF Jose Siri outright to Syracuse Mets. |
| Sep 27 | Brett Baty | Status Change | New York Mets placed 3B Brett Baty on the 10-day injured list. Right oblique strain. |
| Sep 27 | Jared Young | Recalled | New York Mets recalled LF Jared Young from Syracuse Mets. |
| Sep 27 | Dylan Ross | Selected | New York Mets selected the contract of RHP Dylan Ross from Syracuse Mets. |
| Sep 27 | Kevin Herget | Designated for Assignment | New York Mets designated RHP Kevin Herget for assignment. |
| Sep 25 | Richard Lovelady | Designated for Assignment | New York Mets designated LHP Richard Lovelady for assignment. |
| Sep 25 | Chris Devenski | Outrighted | New York Mets sent RHP Chris Devenski outright to Syracuse Mets. |
| Sep 25 | Kevin Herget | Recalled | New York Mets recalled RHP Kevin Herget from Syracuse Mets. |
| Sep 24 | Jose Siri | Designated for Assignment | New York Mets designated CF Jose Siri for assignment. |
| Sep 24 | Tyrone Taylor | Status Change | New York Mets activated CF Tyrone Taylor from the 10-day injured list. |
| Sep 22 | Wander Suero | Outrighted | New York Mets sent RHP Wander Suero outright to Syracuse Mets. |
| Sep 21 | Sean Manaea | Status Change | New York Mets activated LHP Sean Manaea from the paternity list. |
| Sep 21 | Chris Devenski | Designated for Assignment | New York Mets designated RHP Chris Devenski for assignment. |
| Sep 20 | Dom Hamel | Claimed Off Waivers | Baltimore Orioles claimed RHP Dom Hamel off waivers from New York Mets. |
| Sep 20 | Wander Suero | Designated for Assignment | New York Mets designated RHP Wander Suero for assignment. |
| Sep 20 | Richard Lovelady | Selected | New York Mets selected the contract of LHP Richard Lovelady from Syracuse Mets. |
| Sep 19 | Tyrone Taylor | Assigned | New York Mets sent CF Tyrone Taylor on a rehab assignment to Syracuse Mets. |
| Sep 18 | Dom Hamel | Designated for Assignment | New York Mets designated RHP Dom Hamel for assignment. |
| Sep 18 | Chris Devenski | Recalled | New York Mets recalled RHP Chris Devenski from Syracuse Mets. |
| Sep 18 | Huascar Brazobán | Recalled | New York Mets recalled RHP Huascar Brazobán from Syracuse Mets. |
| Sep 18 | Sean Manaea | Status Change | New York Mets placed LHP Sean Manaea on the paternity list. |
| Sep 18 | Wander Suero | Selected | New York Mets selected the contract of RHP Wander Suero from Syracuse Mets. |
| Sep 18 | Reed Garrett | Status Change | New York Mets placed RHP Reed Garrett on the 15-day injured list retroactive to September 15, 2025. Right elnow sprain. |
| Sep 17 | Luis Torrens | Status Change | New York Mets activated C Luis Torrens from the 10-day injured list. |
| Sep 17 | Hayden Senger | Optioned | New York Mets optioned C Hayden Senger to Syracuse Mets. |
| Sep 17 | Edwin Díaz | Number Change | RHP Edwin Díaz changed number to 39. |
| Sep 17 | Francisco Lindor | Number Change | SS Francisco Lindor changed number to 12. |
| Sep 17 | Juan Soto | Number Change | RF Juan Soto changed number to 22. |
| Sep 16 | Luis Torrens | Assigned | New York Mets sent C Luis Torrens on a rehab assignment to Syracuse Mets. |
| Sep 16 | Juan Soto | Number Change | RF Juan Soto changed number to 21. |
| Sep 16 | Edwin Díaz | Number Change | RHP Edwin Díaz changed number to 21. |
| Sep 16 | Francisco Lindor | Number Change | SS Francisco Lindor changed number to 21. |
| Sep 16 | Luis Torrens | Assigned | New York Mets sent C Luis Torrens on a rehab assignment to Syracuse Mets. |
| Sep 13 | Huascar Brazobán | Optioned | New York Mets optioned RHP Huascar Brazobán to Syracuse Mets. |
| Sep 13 | Dom Hamel | Recalled | New York Mets recalled RHP Dom Hamel from Syracuse Mets. |
| Sep 11 | Wander Suero | Outrighted | New York Mets sent RHP Wander Suero outright to Syracuse Mets. |
| Sep 11 | Justin Hagenman | Optioned | New York Mets optioned RHP Justin Hagenman to Syracuse Mets. |
| Sep 11 | Huascar Brazobán | Recalled | New York Mets recalled RHP Huascar Brazobán from Syracuse Mets. |
| Sep 9 | Wander Suero | Designated for Assignment | New York Mets designated RHP Wander Suero for assignment. |
| Sep 9 | Justin Garza | Outrighted | New York Mets sent RHP Justin Garza outright to Syracuse Mets. |
| Sep 9 | Jared Young | Optioned | New York Mets optioned LF Jared Young to Syracuse Mets. |
| Sep 9 | Jose Siri | Status Change | New York Mets activated CF Jose Siri from the 60-day injured list. |
| Sep 8 | Joe La Sorsa | Signed as Free Agent | New York Mets signed free agent LHP Joe La Sorsa to a minor league contract. |
| Sep 8 | Hayden Senger | Recalled | New York Mets recalled C Hayden Senger from Syracuse Mets. |
| Sep 8 | Luis Torrens | Status Change | New York Mets placed C Luis Torrens on the 10-day injured list retroactive to September 7, 2025. Right forearm contusion. |
| Sep 7 | Justin Garza | Designated for Assignment | New York Mets designated RHP Justin Garza for assignment. |
| Sep 7 | Reed Garrett | Status Change | New York Mets activated RHP Reed Garrett from the 15-day injured list. |
| Sep 7 | Kevin Herget | Optioned | New York Mets optioned RHP Kevin Herget to Syracuse Mets. |
| Sep 7 | Wander Suero | Optioned | New York Mets optioned RHP Wander Suero to Syracuse Mets. |
| Sep 7 | Brandon Sproat | Selected | New York Mets selected the contract of RHP Brandon Sproat from Syracuse Mets. |
| Sep 5 | Hayden Senger | Optioned | New York Mets optioned C Hayden Senger to Syracuse Mets. |
| Sep 5 | Francisco Alvarez | Status Change | New York Mets activated C Francisco Alvarez from the 10-day injured list. |
| Sep 5 | Wander Suero | Status Change | New York Mets activated RHP Wander Suero. |
| Sep 5 | Kodai Senga | Optioned | New York Mets optioned RHP Kodai Senga to Syracuse Mets. |
| Sep 4 | Wander Suero | Claimed Off Waivers | New York Mets claimed RHP Wander Suero off waivers from Atlanta Braves. |
| Sep 4 | Reed Garrett | Assigned | New York Mets sent RHP Reed Garrett on a rehab assignment to Binghamton Rumble Ponies. |
| Sep 3 | José Castillo | Claimed Off Waivers | Seattle Mariners claimed LHP José Castillo off waivers from New York Mets. |
| Sep 2 | Jose Siri | Assigned | New York Mets sent CF Jose Siri on a rehab assignment to Syracuse Mets. |
| Sep 2 | Kevin Herget | Recalled | New York Mets recalled RHP Kevin Herget from Syracuse Mets. |
| Sep 2 | Jared Young | Recalled | New York Mets recalled LF Jared Young from Syracuse Mets. |
| Sep 2 | Brandon Waddell | Optioned | New York Mets optioned LHP Brandon Waddell to Syracuse Mets. |
| Sep 2 | Tyrone Taylor | Status Change | New York Mets placed CF Tyrone Taylor on the 10-day injured list retroactive to August 30, 2025. Left hamstring strain. |
| Sep 1 | Justin Hagenman | Recalled | New York Mets recalled RHP Justin Hagenman from Syracuse Mets. |
| Sep 1 | Luisangel Acuña | Recalled | New York Mets recalled 2B Luisangel Acuña from Syracuse Mets. |
| Aug 31 | Ali Sánchez | Trade | New York Mets traded C Ali Sánchez to Boston Red Sox. |
| Aug 31 | Chris Devenski | Optioned | New York Mets optioned RHP Chris Devenski to Syracuse Mets. |
| Aug 31 | Brandon Waddell | Recalled | New York Mets recalled LHP Brandon Waddell from Syracuse Mets. |
| Aug 30 | José Castillo | Designated for Assignment | New York Mets designated LHP José Castillo for assignment. |
| Aug 30 | Chris Devenski | Recalled | New York Mets recalled RHP Chris Devenski from Syracuse Mets. |
| Aug 29 | Jonah Tong | Selected | New York Mets selected the contract of RHP Jonah Tong from Syracuse Mets. |
| Aug 29 | Kevin Herget | Optioned | New York Mets optioned RHP Kevin Herget to Syracuse Mets. |
| Aug 28 | Ty Adcock | Outrighted | New York Mets sent RHP Ty Adcock outright to Syracuse Mets. |
| Aug 27 | Francisco Alvarez | Assigned | New York Mets sent C Francisco Alvarez on a rehab assignment to Syracuse Mets. |
| Aug 27 | Huascar Brazobán | Optioned | New York Mets optioned RHP Huascar Brazobán to Syracuse Mets. |
| Aug 27 | Francisco Alvarez | Assigned | New York Mets sent C Francisco Alvarez on a rehab assignment to Syracuse Mets. |
| Aug 27 | Kevin Herget | Recalled | New York Mets recalled RHP Kevin Herget from Syracuse Mets. |
| Aug 27 | Jesse Winker | Assigned | New York Mets sent LF Jesse Winker on a rehab assignment to St. Lucie Mets. |
| Aug 27 | Jose Siri | Assigned | New York Mets sent CF Jose Siri on a rehab assignment to St. Lucie Mets. |
| Aug 26 | Sam Biller | Signed as Free Agent | New York Mets signed free agent OF Sam Biller to a minor league contract. |
| Aug 25 | José Castillo | Selected | New York Mets selected the contract of LHP José Castillo from Syracuse Mets. |
| Aug 25 | Frankie Montas | Status Change | New York Mets transferred RHP Frankie Montas from the 15-day injured list to the 60-day injured list. Right elbow UCL injury. |
| Aug 25 | Reed Garrett | Status Change | New York Mets placed RHP Reed Garrett on the 15-day injured list retroactive to August 23, 2025. Right elbow inflammation. |
| Aug 23 | Ali Sánchez | Signed as Free Agent | New York Mets signed free agent C Ali Sánchez to a minor league contract. |
| Aug 23 | Huascar Brazobán | Recalled | New York Mets recalled RHP Huascar Brazobán from Syracuse Mets. |
| Aug 23 | Frankie Montas | Status Change | New York Mets placed RHP Frankie Montas on the 15-day injured list retroactive to August 22, 2025. Right elbow UCL injury. |
| Aug 22 | Tylor Megill | Assigned | New York Mets sent RHP Tylor Megill on a rehab assignment to Syracuse Mets. |
| Aug 19 | Francisco Alvarez | Status Change | New York Mets placed C Francisco Alvarez on the 10-day injured list retroactive to August 18, 2025. Right thumb UCL sprain. |
| Aug 19 | Hayden Senger | Recalled | New York Mets recalled C Hayden Senger from Syracuse Mets. |
| Aug 18 | Paul Blackburn | Released | New York Mets released RHP Paul Blackburn. |
| Aug 18 | Luisangel Acuña | Optioned | New York Mets optioned 2B Luisangel Acuña to Syracuse Mets. |
| Aug 17 | Luisangel Acuña | Recalled | New York Mets recalled 2B Luisangel Acuña from Syracuse Mets. |
| Aug 16 | Paul Blackburn | Designated for Assignment | New York Mets designated RHP Paul Blackburn for assignment. |
| Aug 16 | Nolan McLean | Selected | New York Mets selected the contract of RHP Nolan McLean from Syracuse Mets. |
| Aug 15 | Dalton Mall | Signed as Free Agent | New York Mets signed free agent RHP Dalton Mall to a minor league contract. |
| Aug 13 | Justin Hagenman | Optioned | New York Mets optioned RHP Justin Hagenman to Syracuse Mets. |
| Aug 13 | Paul Blackburn | Status Change | New York Mets activated RHP Paul Blackburn from the 15-day injured list. |
| Aug 12 | Tylor Megill | Assigned | New York Mets sent RHP Tylor Megill on a rehab assignment to Binghamton Rumble Ponies. |
| Aug 12 | Tylor Megill | Assigned | New York Mets sent RHP Tylor Megill on a rehab assignment to Binghamton Rumble Ponies. |
| Aug 12 | Tylor Megill | Assigned | New York Mets sent RHP Tylor Megill on a rehab assignment to Binghamton Rumble Ponies. |
| Aug 11 | Brandon Waddell | Optioned | New York Mets optioned LHP Brandon Waddell to Syracuse Mets. |
| Aug 11 | Brandon Waddell | Status Change | New York Mets activated LHP Brandon Waddell from the 15-day injured list. |
| Aug 10 | Brandon Waddell | Status Change | New York Mets reassigned LHP Brandon Waddell to the minor leagues. |
| Aug 6 | Brandon Waddell | Assigned | New York Mets sent LHP Brandon Waddell on a rehab assignment to Syracuse Mets. |
| Aug 6 | Dom Hamel | Optioned | New York Mets optioned RHP Dom Hamel to Syracuse Mets. |
| Aug 6 | Justin Hagenman | Recalled | New York Mets recalled RHP Justin Hagenman from Syracuse Mets. |
| Aug 5 | Joe Charles | Signed as Free Agent | New York Mets signed free agent RHP Joe Charles to a minor league contract. |
| Aug 5 | MLB Player 836355 | Signed as Free Agent | New York Mets signed free agent RHP Joseph Charles to a minor league contract. |
| Aug 5 | Colton Cosper | Signed as Free Agent | New York Mets signed free agent LHP Colton Cosper to a minor league contract. |
| Aug 5 | Rico Garcia | Claimed Off Waivers | Baltimore Orioles claimed RHP Rico Garcia off waivers from New York Mets. |
| Aug 4 | Rico Garcia | Status Change | RHP Rico Garcia roster status changed by New York Mets. |
| Aug 4 | Dom Hamel | Selected | New York Mets selected the contract of RHP Dom Hamel from Syracuse Mets. |
| Aug 4 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Aug 3 | Rico Garcia | Designated for Assignment | New York Mets designated RHP Rico Garcia for assignment. |
| Aug 3 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Aug 2 | Brandon Waddell | Assigned | New York Mets sent LHP Brandon Waddell on a rehab assignment to Binghamton Rumble Ponies. |
| Aug 1 | Jesus Griman | Signed as Free Agent | New York Mets signed free agent C Jesus Griman to a minor league contract. |
| Aug 1 | Jefry Yan | Signed as Free Agent | New York Mets signed free agent LHP Jefry Yan to a minor league contract. |
| Aug 1 | Ryan Helsley | Status Change | New York Mets activated RHP Ryan Helsley. |
| Aug 1 | Luisangel Acuña | Optioned | New York Mets optioned 2B Luisangel Acuña to Syracuse Mets. |
| Aug 1 | Cedric Mullins | Status Change | New York Mets activated CF Cedric Mullins. |
| Jul 31 | José Castillo | Outrighted | New York Mets sent LHP José Castillo outright to Syracuse Mets. |
| Jul 31 | Chris Devenski | Optioned | New York Mets optioned RHP Chris Devenski to Syracuse Mets. |
| Jul 31 | Tyler Rogers | Status Change | New York Mets activated RHP Tyler Rogers. |
| Jul 31 | Jesse Winker | Status Change | New York Mets transferred LF Jesse Winker from the 10-day injured list to the 60-day injured list. Back inflammation. |
| Jul 31 | Cedric Mullins | Trade | Baltimore Orioles traded CF Cedric Mullins to New York Mets for RHP Raimon Gomez, RHP Anthony Nunez and RHP Chandler Marsh. |
| Jul 30 | Chris Devenski | Status Change | New York Mets reassigned RHP Chris Devenski to the minor leagues. |
| Jul 30 | Tyler Rogers | Status Change | RHP Tyler Rogers roster status changed by New York Mets. |
| Jul 30 | Ryan Helsley | Status Change | RHP Ryan Helsley roster status changed by New York Mets. |
| Jul 30 | Jesús Báez | Trade | St. Louis Cardinals traded RHP Ryan Helsley to New York Mets for SS Jesus Baez, RHP Frank Elissalt and RHP Nate Dohm. |
| Jul 30 | Tyler Rogers | Trade | San Francisco Giants traded RHP Tyler Rogers to New York Mets for RHP Blade Tidwell, RHP José Buttó and CF Drew Gilbert. |
| Jul 29 | Chris Devenski | Signed as Free Agent | New York Mets signed free agent RHP Chris Devenski. |
| Jul 29 | Huascar Brazobán | Optioned | New York Mets optioned RHP Huascar Brazobán to Syracuse Mets. |
| Jul 27 | Gregory Soto | Status Change | New York Mets activated LHP Gregory Soto. |
| Jul 27 | José Castillo | Designated for Assignment | New York Mets designated LHP José Castillo for assignment. |
| Jul 26 | Chris Devenski | Outrighted | New York Mets sent RHP Chris Devenski outright to Syracuse Mets. |
| Jul 25 | Gregory Soto | Status Change | LHP Gregory Soto roster status changed by New York Mets. |
| Jul 25 | Max Kranick | Status Change | New York Mets transferred RHP Max Kranick from the 15-day injured list to the 60-day injured list. Right elbow strain. |
| Jul 25 | José Castillo | Selected | New York Mets selected the contract of LHP José Castillo from Syracuse Mets. |
| Jul 25 | Gregory Soto | Trade | Baltimore Orioles traded LHP Gregory Soto to New York Mets for RHP Wellington Aracena and RHP Cameron Foster. |
| Jul 24 | Alex Carrillo | Optioned | New York Mets optioned RHP Alex Carrillo to Syracuse Mets. |
| Jul 24 | Caden Wooster | Signed as Free Agent | New York Mets signed free agent RHP Caden Wooster to a minor league contract. |
| Jul 24 | AJ Salgado | Signed as Free Agent | New York Mets signed free agent 3B AJ Salgado to a minor league contract. |
| Jul 24 | Colby Frieda | Signed as Free Agent | New York Mets signed free agent RHP Colby Frieda to a minor league contract. |
| Jul 24 | Tyler McLoughlin | Signed | New York Mets signed RHP Tyler McLoughlin. |
| Jul 23 | Dillon Stiltner | Signed | New York Mets signed RHP Dillon Stiltner. |
| Jul 23 | John Bay | Signed as Free Agent | New York Mets signed free agent OF John Bay to a minor league contract. |
| Jul 23 | Justin Garza | Optioned | New York Mets optioned RHP Justin Garza to Syracuse Mets. |
| Jul 23 | José Buttó | Status Change | New York Mets activated RHP José Buttó from the 15-day injured list. |
| Jul 22 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Syracuse Mets. |
| Jul 22 | Cam Tilly | Signed | New York Mets signed RHP Cam Tilly. |
| Jul 22 | Zack Mack | Signed | New York Mets signed RHP Zack Mack. |
| Jul 22 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Syracuse Mets. |
| Jul 22 | Brandon Waddell | Status Change | New York Mets placed LHP Brandon Waddell on the 15-day injured list retroactive to July 19, 2025. Right hip impingement. |
| Jul 22 | Jared Young | Optioned | New York Mets optioned LF Jared Young to Syracuse Mets. |
| Jul 22 | Kevin Herget | Optioned | New York Mets optioned RHP Kevin Herget to Syracuse Mets. |
| Jul 22 | Justin Garza | Recalled | New York Mets recalled RHP Justin Garza from Syracuse Mets. |
| Jul 22 | Chris Devenski | Designated for Assignment | New York Mets designated RHP Chris Devenski for assignment. |
| Jul 22 | Rico Garcia | Status Change | New York Mets activated RHP Rico Garcia. |
| Jul 22 | Starling Marte | Status Change | New York Mets activated LF Starling Marte from the 10-day injured list. |
| Jul 21 | Conner Ware | Signed | New York Mets signed LHP Conner Ware. |
| Jul 21 | Wyatt Vincent | Signed | New York Mets signed OF Wyatt Vincent. |
| Jul 21 | Garrett Stratton | Signed | New York Mets signed RHP Garrett Stratton. |
| Jul 21 | Joe Scarborough | Signed | New York Mets signed RHP Joe Scarborough. |
| Jul 21 | Sam Robertson | Signed | New York Mets signed SS Sam Robertson. |
| Jul 21 | Truman Pauley | Signed | New York Mets signed RHP Truman Pauley. |
| Jul 21 | Chase Meggers | Signed as Free Agent | New York Mets signed free agent C Chase Meggers to a minor league contract. |
| Jul 21 | Camden Lohman | Signed | New York Mets signed RHP Camden Lohman. |
| Jul 21 | Peter Kussow | Signed | New York Mets signed RHP Peter Kussow. |
| Jul 21 | Nathan Hall | Signed | New York Mets signed RHP Nathan Hall. |
| Jul 21 | Anthony Frobose | Signed | New York Mets signed SS Anthony Frobose. |
| Jul 21 | Frank Camarillo | Signed | New York Mets signed RHP Frank Camarillo. |
| Jul 21 | Austin Brown | Signed as Free Agent | New York Mets signed free agent RHP Austin Brown to a minor league contract. |
| Jul 21 | Dedniel Núñez | Status Change | New York Mets transferred RHP Dedniel Núñez from the 15-day injured list to the 60-day injured list. Right elbow sprain. |
| Jul 21 | Richard Lovelady | Outrighted | New York Mets sent LHP Richard Lovelady outright to Syracuse Mets. |
| Jul 21 | Rico Garcia | Claimed Off Waivers | New York Mets claimed RHP Rico Garcia off waivers from New York Yankees. |
| Jul 21 | Hayden Senger | Optioned | New York Mets optioned C Hayden Senger to Syracuse Mets. |
| Jul 21 | Francisco Alvarez | Recalled | New York Mets recalled C Francisco Alvarez from Syracuse Mets. |
| Jul 19 | Ryan Dollar | Signed as Free Agent | New York Mets signed free agent RHP Ryan Dollar to a minor league contract. |
| Jul 19 | Jonah Conradt | Signed as Free Agent | New York Mets signed free agent RHP Jonah Conradt to a minor league contract. |
| Jul 19 | Parker Carlson | Signed as Free Agent | New York Mets signed free agent RHP Parker Carlson to a minor league contract. |
| Jul 19 | Kevin Herget | Selected | New York Mets selected the contract of RHP Kevin Herget from Syracuse Mets. |
| Jul 18 | Jhony Osoria | Signed as Free Agent | New York Mets signed free agent RHP Jhony Osoria to a minor league contract. |
| Jul 18 | Kevin Herget | Signed as Free Agent | New York Mets signed free agent RHP Kevin Herget to a minor league contract. |
| Jul 18 | Peyton Prescott | Signed | New York Mets signed RHP Peyton Prescott. |
| Jul 18 | José Buttó | Assigned | New York Mets sent RHP José Buttó on a rehab assignment to Syracuse Mets. |
| Jul 18 | Richard Lovelady | Designated for Assignment | New York Mets designated LHP Richard Lovelady for assignment. |
| Jul 18 | Brooks Raley | Status Change | New York Mets activated LHP Brooks Raley from the 60-day injured list. |
| Jul 17 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to FCL Mets. |
| Jul 17 | Antonio Jimenez | Signed | New York Mets signed SS Antonio Jimenez. |
| Jul 17 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to FCL Mets. |
| Jul 17 | Mitch Voit | Signed | New York Mets signed TWP Mitch Voit. |
| Jul 15 | Jahzeel Montas | Signed as Free Agent | New York Mets signed free agent RHP Jahzeel Montas to a minor league contract. |
| Jul 15 | Aurelvys Batista | Signed as Free Agent | New York Mets signed free agent RHP Aurelvys Batista to a minor league contract. |
| Jul 15 | José Buttó | Assigned | New York Mets sent RHP José Buttó on a rehab assignment to FCL Mets. |
| Jul 14 | Rico Garcia | Claimed Off Waivers | New York Yankees claimed RHP Rico Garcia off waivers from New York Mets. |
| Jul 13 | Travis Jankowski | Outrighted | New York Mets sent RF Travis Jankowski outright to Syracuse Mets. |
| Jul 13 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Jul 13 | Sean Manaea | Status Change | New York Mets activated LHP Sean Manaea from the 60-day injured list. |
| Jul 11 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Jul 11 | Rico Garcia | Designated for Assignment | New York Mets designated RHP Rico Garcia for assignment. |
| Jul 11 | Jared Young | Recalled | New York Mets recalled LF Jared Young from Syracuse Mets. |
| Jul 11 | Jesse Winker | Status Change | New York Mets placed LF Jesse Winker on the 10-day injured list. Back inflammation. |
| Jul 11 | Justin Hagenman | Optioned | New York Mets optioned RHP Justin Hagenman to Syracuse Mets. |
| Jul 11 | Kodai Senga | Status Change | New York Mets activated RHP Kodai Senga from the 15-day injured list. |
| Jul 11 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Jul 10 | Austin Warren | Status Change | New York Mets activated RHP Austin Warren. |
| Jul 10 | Austin Warren | Status Change | New York Mets reassigned RHP Austin Warren to the minor leagues. |
| Jul 10 | Zach Pop | Outrighted | New York Mets sent RHP Zach Pop outright to Syracuse Mets. |
| Jul 10 | Travis Jankowski | Designated for Assignment | New York Mets designated RF Travis Jankowski for assignment. |
| Jul 10 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Jul 10 | Luisangel Acuña | Recalled | New York Mets recalled 2B Luisangel Acuña from Syracuse Mets. |
| Jul 9 | Tyler Zuber | Claimed Off Waivers | Miami Marlins claimed RHP Tyler Zuber off waivers from New York Mets. |
| Jul 8 | Matteo Marelli | Signed as Free Agent | New York Mets signed free agent LHP Matteo Morelli to a minor league contract. |
| Jul 8 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Syracuse Mets. |
| Jul 8 | Junior Fernández | Signed as Free Agent | New York Mets signed free agent RHP Junior Fernández to a minor league contract. |
| Jul 8 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Syracuse Mets. |
| Jul 8 | Zach Pop | Designated for Assignment | New York Mets designated RHP Zach Pop for assignment. |
| Jul 8 | Alex Carrillo | Selected | New York Mets selected the contract of RHP Alex Carrillo from Syracuse Mets. |
| Jul 8 | Tylor Megill | Status Change | New York Mets transferred RHP Tylor Megill from the 15-day injured list to the 60-day injured list. Right elbow sprain. |
| Jul 8 | Starling Marte | Status Change | New York Mets placed LF Starling Marte on the 10-day injured list retroactive to July 7, 2025. Right knee bruise. |
| Jul 8 | Jesse Winker | Status Change | New York Mets activated LF Jesse Winker from the 60-day injured list. |
| Jul 6 | Colin Poche | Signed as Free Agent | New York Mets signed LHP Colin Poche. |
| Jul 5 | Jesse Winker | Assigned | New York Mets sent LF Jesse Winker on a rehab assignment to Syracuse Mets. |
| Jul 5 | Tyler Zuber | Designated for Assignment | New York Mets designated RHP Tyler Zuber for assignment. |
| Jul 5 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Jul 5 | Zach Pop | Status Change | New York Mets activated RHP Zach Pop. |
| Jul 5 | Zach Pop | Signed as Free Agent | New York Mets signed free agent RHP Zach Pop. |
| Jul 5 | Kodai Senga | Assigned | New York Mets sent RHP Kodai Senga on a rehab assignment to Binghamton Rumble Ponies. |
| Jul 4 | Brooks Raley | Assigned | New York Mets sent LHP Brooks Raley on a rehab assignment to Syracuse Mets. |
| Jul 4 | Chris Devenski | Recalled | New York Mets recalled RHP Chris Devenski from Syracuse Mets. |
| Jul 4 | José Buttó | Status Change | New York Mets placed RHP José Buttó on the 15-day injured list retroactive to July 1, 2025. Illness. |
| Jul 3 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Jul 3 | Rico Garcia | Selected | New York Mets selected the contract of RHP Rico Garcia from Syracuse Mets. |
| Jul 3 | Justin Hagenman | Recalled | New York Mets recalled RHP Justin Hagenman from Syracuse Mets. |
| Jul 3 | Blade Tidwell | Optioned | New York Mets optioned RHP Blade Tidwell to Syracuse Mets. |
| Jul 3 | Dedniel Núñez | Status Change | New York Mets placed RHP Dedniel Núñez on the 15-day injured list. Right elbow sprain. |
| Jul 3 | Paul Blackburn | Status Change | New York Mets placed RHP Paul Blackburn on the 15-day injured list retroactive to June 30, 2025. Right shoulder impingement. |
| Jul 3 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Jul 2 | Sebastian Lantigua | Signed as Free Agent | New York Mets signed free agent RHP Sebastian Lantigua to a minor league contract. |
| Jul 2 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Jul 1 | Colin Poche | Declared Free Agency | LHP Colin Poche elected free agency. |
| Jul 1 | — | Trade | New York Mets traded 2B Donovan Walton to Philadelphia Phillies for cash. |
| Jul 1 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Binghamton Rumble Ponies. |
| Jul 1 | Jesse Winker | Assigned | New York Mets sent LF Jesse Winker on a rehab assignment to Binghamton Rumble Ponies. |
| Jul 1 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Binghamton Rumble Ponies. |
| Jun 29 | José Castillo | Outrighted | New York Mets sent LHP José Castillo outright to Syracuse Mets. |
| Jun 29 | Jesse Winker | Assigned | New York Mets sent LF Jesse Winker on a rehab assignment to Brooklyn Cyclones. |
| Jun 29 | Colin Poche | Designated for Assignment | New York Mets designated LHP Colin Poche for assignment. |
| Jun 29 | Richard Lovelady | Signed as Free Agent | New York Mets signed free agent LHP Richard Lovelady. |
| Jun 28 | Brooks Raley | Assigned | New York Mets sent LHP Brooks Raley on a rehab assignment to Binghamton Rumble Ponies. |
| Jun 28 | Brooks Raley | Assigned | New York Mets sent LHP Brooks Raley on a rehab assignment to Binghamton Rumble Ponies. |
| Jun 27 | José Azócar | Signed as Free Agent | New York Mets signed free agent LF José Azocar to a minor league contract. |
| Jun 27 | Richard Lovelady | Outrighted | New York Mets sent LHP Richard Lovelady outright to Syracuse Mets. |
| Jun 27 | Jared Young | Optioned | New York Mets optioned LF Jared Young to Syracuse Mets. |
| Jun 27 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Jun 27 | Mark Vientos | Status Change | New York Mets activated 3B Mark Vientos from the 10-day injured list. |
| Jun 27 | Colin Poche | Selected | New York Mets selected the contract of LHP Colin Poche from Syracuse Mets. |
| Jun 27 | Blade Tidwell | Recalled | New York Mets recalled RHP Blade Tidwell from Syracuse Mets. |
| Jun 27 | Griffin Canning | Status Change | New York Mets placed RHP Griffin Canning on the 60-day injured list. Left achilles rupture. |
| Jun 26 | Jonathan Pintaro | Optioned | New York Mets optioned RHP Jonathan Pintaro to Syracuse Mets. |
| Jun 26 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| Jun 25 | José Castillo | Designated for Assignment | New York Mets designated LHP José Castillo for assignment. |
| Jun 25 | Richard Lovelady | Designated for Assignment | New York Mets designated LHP Richard Lovelady for assignment. |
| Jun 25 | Brandon Waddell | Recalled | New York Mets recalled LHP Brandon Waddell from Syracuse Mets. |
| Jun 25 | Jonathan Pintaro | Selected | New York Mets selected the contract of RHP Jonathan Pintaro from Syracuse Mets. |
| Jun 24 | Jesse Winker | Status Change | New York Mets transferred LF Jesse Winker from the 10-day injured list to the 60-day injured list. Right oblique strain. |
| Jun 24 | Chris Devenski | Optioned | New York Mets optioned RHP Chris Devenski to Syracuse Mets. |
| Jun 24 | Frankie Montas | Status Change | New York Mets activated RHP Frankie Montas from the 60-day injured list. |
| Jun 23 | Richard Lovelady | Signed as Free Agent | New York Mets signed free agent LHP Richard Lovelady. |
| Jun 23 | Jose Siri | Status Change | New York Mets transferred CF Jose Siri from the 10-day injured list to the 60-day injured list. Left tibia fracture. |
| Jun 23 | Luisangel Acuña | Optioned | New York Mets optioned 2B Luisangel Acuña to Syracuse Mets. |
| Jun 23 | Travis Jankowski | Selected | New York Mets selected the contract of RF Travis Jankowski from Syracuse Mets. |
| Jun 23 | Tyler Zuber | Optioned | New York Mets optioned RHP Tyler Zuber to Syracuse Mets. |
| Jun 22 | Hayden Senger | Recalled | New York Mets recalled C Hayden Senger from Syracuse Mets. |
| Jun 22 | Francisco Alvarez | Optioned | New York Mets optioned C Francisco Alvarez to Syracuse Mets. |
| Jun 21 | Pablo Reyes | Signed as Free Agent | New York Mets signed free agent RF Pablo Reyes to a minor league contract. |
| Jun 21 | Blade Tidwell | Optioned | New York Mets optioned RHP Blade Tidwell to Syracuse Mets. |
| Jun 21 | Justin Garza | Optioned | New York Mets optioned RHP Justin Garza to Syracuse Mets. |
| Jun 21 | Tyler Zuber | Recalled | New York Mets recalled RHP Tyler Zuber from Syracuse Mets. |
| Jun 21 | Chris Devenski | Recalled | New York Mets recalled RHP Chris Devenski from Syracuse Mets. |
| Jun 20 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Syracuse Mets. |
| Jun 20 | Rayner Reyes | Signed as Free Agent | New York Mets signed free agent RHP Rayner Reyes to a minor league contract. |
| Jun 20 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Syracuse Mets. |
| Jun 20 | Justin Hagenman | Optioned | New York Mets optioned RHP Justin Hagenman to Syracuse Mets. |
| Jun 20 | Blade Tidwell | Recalled | New York Mets recalled RHP Blade Tidwell from Syracuse Mets. |
| Jun 19 | Ty Adcock | Optioned | New York Mets optioned RHP Ty Adcock to Syracuse Mets. |
| Jun 19 | Max Kranick | Status Change | New York Mets placed RHP Max Kranick on the 15-day injured list retroactive to June 16, 2025. Right elbow strain. |
| Jun 19 | Dedniel Núñez | Recalled | New York Mets recalled RHP Dedniel Núñez from Syracuse Mets. |
| Jun 19 | Justin Hagenman | Recalled | New York Mets recalled RHP Justin Hagenman from Syracuse Mets. |
| Jun 17 | Brooks Raley | Assigned | New York Mets sent LHP Brooks Raley on a rehab assignment to St. Lucie Mets. |
| Jun 17 | Brooks Raley | Assigned | New York Mets sent LHP Brooks Raley on a rehab assignment to St. Lucie Mets. |
| Jun 17 | Tylor Megill | Status Change | New York Mets placed RHP Tylor Megill on the 15-day injured list retroactive to June 15, 2025. Right elbow sprain. |
| Jun 17 | Justin Garza | Recalled | New York Mets recalled RHP Justin Garza from Syracuse Mets. |
| Jun 17 | Mark Vientos | Assigned | New York Mets sent 3B Mark Vientos on a rehab assignment to Syracuse Mets. |
| Jun 17 | Brooks Raley | Assigned | New York Mets sent LHP Brooks Raley on a rehab assignment to St. Lucie Mets. |
| Jun 15 | Ty Adcock | Recalled | New York Mets recalled RHP Ty Adcock from Syracuse Mets. |
| Jun 15 | Justin Garza | Optioned | New York Mets optioned RHP Justin Garza to Syracuse Mets. |
| Jun 13 | Kodai Senga | Status Change | New York Mets placed RHP Kodai Senga on the 15-day injured list. Right hamstring strain. |
| Jun 13 | Max Kranick | Recalled | New York Mets recalled RHP Max Kranick from Syracuse Mets. |
| Jun 12 | Julio Gonzalez | Signed as Free Agent | New York Mets signed free agent RHP Julio Gonzalez to a minor league contract. |
| Jun 12 | Francisco Alvarez | Status Change | New York Mets activated C Francisco Alvarez from the paternity list. |
| Jun 12 | Hayden Senger | Optioned | New York Mets optioned C Hayden Senger to Syracuse Mets. |
| Jun 10 | Travis Jankowski | Status Change | RF Travis Jankowski roster status changed by New York Mets. |
| Jun 10 | Travis Jankowski | Signed as Free Agent | New York Mets signed free agent RF Travis Jankowski to a minor league contract. |
| Jun 10 | Hayden Senger | Recalled | New York Mets recalled C Hayden Senger from Syracuse Mets. |
| Jun 10 | Francisco Alvarez | Status Change | New York Mets placed C Francisco Alvarez on the paternity list. |
| Jun 9 | Justin Garza | Selected | New York Mets selected the contract of RHP Justin Garza from Syracuse Mets. |
| Jun 9 | Brandon Waddell | Optioned | New York Mets optioned LHP Brandon Waddell to Syracuse Mets. |
| Jun 7 | Justin Garza | Trade | San Francisco Giants traded RHP Justin Garza to New York Mets for cash. |
| Jun 7 | Yoelvis Martinez | Signed as Free Agent | New York Mets signed free agent RHP Yoelvis Martinez to a minor league contract. |
| Jun 6 | Julian Merryweather | Signed as Free Agent | New York Mets signed free agent RHP Julian Merryweather to a minor league contract. |
| Jun 6 | Sean Manaea | Assigned | New York Mets sent LHP Sean Manaea on a rehab assignment to Brooklyn Cyclones. |
| Jun 3 | Ronny Mauricio | Recalled | New York Mets recalled SS Ronny Mauricio from Syracuse Mets. |
| Jun 3 | Brandon Waddell | Recalled | New York Mets recalled LHP Brandon Waddell from Syracuse Mets. |
| Jun 3 | Max Kranick | Optioned | New York Mets optioned RHP Max Kranick to Syracuse Mets. |
| Jun 3 | Frankie Montas | Assigned | New York Mets sent RHP Frankie Montas on a rehab assignment to Syracuse Mets. |
| Jun 3 | Mark Vientos | Status Change | New York Mets placed 3B Mark Vientos on the 10-day injured list. Right hamstring strain. |
| Jun 2 | Chris Devenski | Optioned | New York Mets optioned RHP Chris Devenski to Syracuse Mets. |
| Jun 2 | Paul Blackburn | Status Change | New York Mets activated RHP Paul Blackburn from the 15-day injured list. |
| May 30 | Brandon Waddell | Optioned | New York Mets optioned LHP Brandon Waddell to Syracuse Mets. |
| May 30 | Chris Devenski | Recalled | New York Mets recalled RHP Chris Devenski from Syracuse Mets. |
| May 28 | José Azócar | Outrighted | New York Mets sent LF José Azocar outright to Syracuse Mets. |
| May 26 | Génesis Cabrera | Outrighted | New York Mets sent LHP Génesis Cabrera outright to Syracuse Mets. |
| May 24 | Frankie Montas | Assigned | New York Mets sent RHP Frankie Montas on a rehab assignment to Brooklyn Cyclones. |
| May 24 | Brandon Waddell | Recalled | New York Mets recalled LHP Brandon Waddell from Syracuse Mets. |
| May 24 | Jared Young | Recalled | New York Mets recalled 1B Jared Young from Syracuse Mets. |
| May 24 | Génesis Cabrera | Designated for Assignment | New York Mets designated LHP Génesis Cabrera for assignment. |
| May 24 | José Azócar | Designated for Assignment | New York Mets designated LF José Azocar for assignment. |
| May 24 | Frankie Montas | Assigned | New York Mets sent RHP Frankie Montas on a rehab assignment to Brooklyn Cyclones. |
| May 22 | Diego Castillo | Trade | New York Mets traded SS Diego A. Castillo to Kansas City Royals. |
| May 21 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Syracuse Mets. |
| May 18 | Kevin Herget | Claimed Off Waivers | Atlanta Braves claimed RHP Kevin Herget off waivers from New York Mets. |
| May 17 | Ronny Mauricio | Optioned | New York Mets optioned SS Ronny Mauricio to Syracuse Mets. |
| May 17 | Ronny Mauricio | Status Change | New York Mets activated SS Ronny Mauricio from the 10-day injured list. |
| May 17 | José Castillo | Status Change | New York Mets activated LHP José Castillo. |
| May 17 | Dedniel Núñez | Optioned | New York Mets optioned RHP Dedniel Núñez to Syracuse Mets. |
| May 16 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Binghamton Rumble Ponies. |
| May 16 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Binghamton Rumble Ponies. |
| May 15 | José Castillo | Trade | Arizona Diamondbacks traded LHP José Castillo to New York Mets for cash. |
| May 15 | Kevin Herget | Designated for Assignment | New York Mets designated RHP Kevin Herget for assignment. |
| May 9 | Ronny Mauricio | Assigned | New York Mets sent SS Ronny Mauricio on a rehab assignment to Binghamton Rumble Ponies. |
| May 9 | Ronny Mauricio | Assigned | New York Mets sent SS Ronny Mauricio on a rehab assignment to Binghamton Rumble Ponies. |
| May 7 | Anderson Ozuna | Signed as Free Agent | New York Mets signed free agent RHP Anderson Ozuna to a minor league contract. |
| May 7 | Henderson Hernandez | Signed as Free Agent | New York Mets signed free agent RHP Henderson Hernandez to a minor league contract. |
| May 7 | Colin Poche | Signed as Free Agent | New York Mets signed free agent LHP Colin Poche to a minor league contract. |
| May 6 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Syracuse Mets. |
| May 6 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Syracuse Mets. |
| May 5 | Brett Baty | Recalled | New York Mets recalled 2B Brett Baty from Syracuse Mets. |
| May 5 | Jesse Winker | Status Change | New York Mets placed LF Jesse Winker on the 10-day injured list. Right oblique strain. |
| May 5 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| May 5 | Blade Tidwell | Optioned | New York Mets optioned RHP Blade Tidwell to Syracuse Mets. |
| May 4 | Dedniel Núñez | Recalled | New York Mets recalled RHP Dedniel Núñez from Syracuse Mets. |
| May 4 | Danny Young | Status Change | New York Mets transferred LHP Danny Young from the 15-day injured list to the 60-day injured list. Left elbow sprain. |
| May 4 | Blade Tidwell | Selected | New York Mets selected the contract of RHP Blade Tidwell from Syracuse Mets. |
| May 2 | Ty Adcock | Optioned | New York Mets optioned RHP Ty Adcock to Syracuse Mets. |
| May 2 | Austin Warren | Recalled | New York Mets recalled RHP Austin Warren from Syracuse Mets. |
| May 1 | José Ureña | Outrighted | New York Mets sent RHP José Ureña outright to Syracuse Mets. |
| May 1 | Frankie Montas | Status Change | New York Mets transferred RHP Frankie Montas from the 15-day injured list to the 60-day injured list. Right lat strain. |
| May 1 | A.J. Minter | Status Change | New York Mets transferred LHP A.J. Minter from the 15-day injured list to the 60-day injured list. Left lat strain. |
| May 1 | Génesis Cabrera | Selected | New York Mets selected the contract of LHP Génesis Cabrera from Syracuse Mets. |
| May 1 | Ty Adcock | Selected | New York Mets selected the contract of RHP Ty Adcock from Syracuse Mets. |
| May 1 | Brandon Waddell | Optioned | New York Mets optioned LHP Brandon Waddell to Syracuse Mets. |
| May 1 | Chris Devenski | Optioned | New York Mets optioned RHP Chris Devenski to Syracuse Mets. |
| Apr 30 | Chris Devenski | Selected | New York Mets selected the contract of RHP Chris Devenski from Syracuse Mets. |
| Apr 30 | Danny Young | Status Change | New York Mets placed LHP Danny Young on the 15-day injured list retroactive to April 27, 2025. Left elbow sprain. |
| Apr 30 | Brooks Raley | Status Change | New York Mets transferred LHP Brooks Raley from the 15-day injured list to the 60-day injured list. |
| Apr 30 | Kevin Herget | Optioned | New York Mets optioned RHP Kevin Herget to Syracuse Mets. |
| Apr 30 | Brandon Waddell | Selected | New York Mets selected the contract of LHP Brandon Waddell from Syracuse Mets. |
| Apr 29 | Brooks Raley | Signed as Free Agent | New York Mets signed free agent LHP Brooks Raley. |
| Apr 29 | Sean Manaea | Status Change | New York Mets transferred LHP Sean Manaea from the 15-day injured list to the 60-day injured list. |
| Apr 29 | José Ureña | Designated for Assignment | New York Mets designated RHP José Ureña for assignment. |
| Apr 29 | Kevin Herget | Recalled | New York Mets recalled RHP Kevin Herget from Syracuse Mets. |
| Apr 28 | Yeider Mindiola | Signed as Free Agent | New York Mets signed free agent C Yeider Mindiola to a minor league contract. |
| Apr 27 | A.J. Minter | Status Change | New York Mets placed LHP A.J. Minter on the 15-day injured list. Left lat strain. |
| Apr 27 | Ronny Mauricio | Assigned | New York Mets sent SS Ronny Mauricio on a rehab assignment to St. Lucie Mets. |
| Apr 27 | José Ureña | Selected | New York Mets selected the contract of RHP José Ureña from Syracuse Mets. |
| Apr 25 | Francisco Alvarez | Status Change | New York Mets activated C Francisco Alvarez from the 10-day injured list. |
| Apr 24 | Jeff McNeil | Status Change | New York Mets activated 2B Jeff McNeil from the 10-day injured list. |
| Apr 24 | Hayden Senger | Optioned | New York Mets optioned C Hayden Senger to Syracuse Mets. |
| Apr 24 | Brett Baty | Optioned | New York Mets optioned 2B Brett Baty to Syracuse Mets. |
| Apr 23 | Rowdey Jordan | Trade | New York Mets traded 2B Rowdey Jordan to Houston Astros. |
| Apr 22 | Jeff McNeil | Assigned | New York Mets sent 2B Jeff McNeil on a rehab assignment to Syracuse Mets. |
| Apr 22 | Francisco Alvarez | Assigned | New York Mets sent C Francisco Alvarez on a rehab assignment to Syracuse Mets. |
| Apr 19 | Jeff McNeil | Assigned | New York Mets sent 2B Jeff McNeil on a rehab assignment to Binghamton Rumble Ponies. |
| Apr 19 | Jeff McNeil | Assigned | New York Mets sent 2B Jeff McNeil on a rehab assignment to Binghamton Rumble Ponies. |
| Apr 19 | Paul Blackburn | Assigned | New York Mets sent RHP Paul Blackburn on a rehab assignment to Brooklyn Cyclones. |
| Apr 17 | Jose Siri | Status Change | New York Mets placed CF Jose Siri on the 10-day injured list. Left tibia fracture. |
| Apr 17 | Max Kranick | Recalled | New York Mets recalled RHP Max Kranick from Syracuse Mets. |
| Apr 17 | Justin Hagenman | Optioned | New York Mets optioned RHP Justin Hagenman to Syracuse Mets. |
| Apr 17 | José Azócar | Selected | New York Mets selected the contract of LF José Azocar from Syracuse Mets. |
| Apr 16 | Max Kranick | Optioned | New York Mets optioned RHP Max Kranick to Syracuse Mets. |
| Apr 16 | Justin Hagenman | Recalled | New York Mets recalled RHP Justin Hagenman from Syracuse Mets. |
| Apr 16 | David Peterson | Number Change | LHP David Peterson changed number to 23. |
| Apr 16 | Starling Marte | Number Change | RF Starling Marte changed number to 6. |
| Apr 16 | Mark Vientos | Number Change | 3B Mark Vientos changed number to 27. |
| Apr 16 | José Buttó | Number Change | RHP José Buttó changed number to 70. |
| Apr 16 | Francisco Lindor | Number Change | SS Francisco Lindor changed number to 12. |
| Apr 16 | Tylor Megill | Number Change | RHP Tylor Megill changed number to 38. |
| Apr 16 | Brandon Nimmo | Number Change | LF Brandon Nimmo changed number to 9. |
| Apr 16 | Kodai Senga | Number Change | RHP Kodai Senga changed number to 34. |
| Apr 16 | Edwin Díaz | Number Change | RHP Edwin Díaz changed number to 39. |
| Apr 16 | Tyrone Taylor | Number Change | RF Tyrone Taylor changed number to 15. |
| Apr 16 | Brett Baty | Number Change | 3B Brett Baty changed number to 7. |
| Apr 16 | Max Kranick | Number Change | RHP Max Kranick changed number to 32. |
| Apr 16 | Clay Holmes | Number Change | RHP Clay Holmes changed number to 35. |
| Apr 16 | Reed Garrett | Number Change | RHP Reed Garrett changed number to 75. |
| Apr 16 | Luisangel Acuña | Number Change | SS Luisangel Acuña changed number to 2. |
| Apr 16 | Danny Young | Number Change | LHP Danny Young changed number to 81. |
| Apr 16 | Juan Soto | Number Change | RF Juan Soto changed number to 22. |
| Apr 16 | Jose Siri | Number Change | CF Jose Siri changed number to 19. |
| Apr 16 | Luis Torrens | Number Change | C Luis Torrens changed number to 13. |
| Apr 16 | Griffin Canning | Number Change | RHP Griffin Canning changed number to 46. |
| Apr 16 | Huascar Brazobán | Number Change | RHP Huascar Brazobán changed number to 43. |
| Apr 16 | Jesse Winker | Number Change | LF Jesse Winker changed number to 3. |
| Apr 16 | Ryne Stanek | Number Change | RHP Ryne Stanek changed number to 55. |
| Apr 16 | Hayden Senger | Number Change | C Hayden Senger changed number to 30. |
| Apr 16 | A.J. Minter | Number Change | LHP A.J. Minter changed number to 33. |
| Apr 16 | Pete Alonso | Number Change | 1B Pete Alonso changed number to 20. |
| Apr 15 | Pete Alonso | Number Change | 1B Pete Alonso changed number to 42. |
| Apr 15 | David Peterson | Number Change | LHP David Peterson changed number to 42. |
| Apr 15 | Starling Marte | Number Change | RF Starling Marte changed number to 42. |
| Apr 15 | Mark Vientos | Number Change | 3B Mark Vientos changed number to 42. |
| Apr 15 | Brett Baty | Number Change | 3B Brett Baty changed number to 42. |
| Apr 15 | Francisco Lindor | Number Change | SS Francisco Lindor changed number to 42. |
| Apr 15 | Tylor Megill | Number Change | RHP Tylor Megill changed number to 42. |
| Apr 15 | Kodai Senga | Number Change | RHP Kodai Senga changed number to 42. |
| Apr 15 | José Buttó | Number Change | RHP José Buttó changed number to 42. |
| Apr 15 | Brandon Nimmo | Number Change | LF Brandon Nimmo changed number to 42. |
| Apr 15 | Edwin Díaz | Number Change | RHP Edwin Díaz changed number to 42. |
| Apr 15 | Clay Holmes | Number Change | RHP Clay Holmes changed number to 42. |
| Apr 15 | Reed Garrett | Number Change | RHP Reed Garrett changed number to 42. |
| Apr 15 | Luisangel Acuña | Number Change | SS Luisangel Acuña changed number to 42. |
| Apr 15 | Max Kranick | Number Change | RHP Max Kranick changed number to 42. |
| Apr 15 | Tyrone Taylor | Number Change | RF Tyrone Taylor changed number to 42. |
| Apr 15 | Jose Siri | Number Change | CF Jose Siri changed number to 42. |
| Apr 15 | Juan Soto | Number Change | RF Juan Soto changed number to 42. |
| Apr 15 | Luis Torrens | Number Change | C Luis Torrens changed number to 42. |
| Apr 15 | Griffin Canning | Number Change | RHP Griffin Canning changed number to 42. |
| Apr 15 | Huascar Brazobán | Number Change | RHP Huascar Brazobán changed number to 42. |
| Apr 15 | Danny Young | Number Change | LHP Danny Young changed number to 42. |
| Apr 15 | Jesse Winker | Number Change | LF Jesse Winker changed number to 42. |
| Apr 15 | Ryne Stanek | Number Change | RHP Ryne Stanek changed number to 42. |
| Apr 15 | A.J. Minter | Number Change | LHP A.J. Minter changed number to 42. |
| Apr 15 | Hayden Senger | Number Change | C Hayden Senger changed number to 42. |
| Apr 15 | Francisco Alvarez | Assigned | New York Mets sent C Francisco Alvarez on a rehab assignment to Binghamton Rumble Ponies. |
| Apr 11 | Jeff McNeil | Assigned | New York Mets sent 2B Jeff McNeil on a rehab assignment to St. Lucie Mets. |
| Apr 11 | Jeff McNeil | Assigned | New York Mets sent 2B Jeff McNeil on a rehab assignment to St. Lucie Mets. |
| Apr 9 | Francisco Alvarez | Assigned | New York Mets sent C Francisco Alvarez on a rehab assignment to St. Lucie Mets. |
| Apr 9 | Francisco Alvarez | Assigned | New York Mets sent C Francisco Alvarez on a rehab assignment to St. Lucie Mets. |
| Apr 6 | Angel Montero | Signed as Free Agent | New York Mets signed free agent LHP Angel Montero to a minor league contract. |
| Apr 2 | Niko Goodrum | Signed as Free Agent | New York Mets signed free agent 3B Niko Goodrum to a minor league contract. |
| Apr 2 | Jon Singleton | Signed as Free Agent | New York Mets signed free agent 1B Jon Singleton to a minor league contract. |
| Apr 1 | José Marte | Signed as Free Agent | New York Mets signed free agent RHP José Marte to a minor league contract. |
| Mar 31 | Greison Acosta | Signed as Free Agent | New York Mets signed free agent LHP Greison Acosta to a minor league contract. |
| Mar 31 | Alexander Canario | Trade | New York Mets traded LF Alexander Canario to Pittsburgh Pirates for cash. |
| Mar 29 | José Azócar | Outrighted | New York Mets sent LF José Azocar outright to Syracuse Mets. |
| Mar 27 | Alexander Canario | Designated for Assignment | New York Mets designated LF Alexander Canario for assignment. |
| Mar 27 | José Azócar | Designated for Assignment | New York Mets designated LF José Azocar for assignment. |
| Mar 27 | Hayden Senger | Selected | New York Mets selected the contract of C Hayden Senger from Syracuse Mets. |
| Mar 27 | Ronny Mauricio | Status Change | New York Mets placed SS Ronny Mauricio on the 10-day injured list retroactive to March 24, 2025. Right ACL rehab. |
| Mar 27 | Jeff McNeil | Status Change | New York Mets placed 2B Jeff McNeil on the 10-day injured list retroactive to March 24, 2025. Right oblique strain. |
| Mar 27 | Francisco Alvarez | Status Change | New York Mets placed C Francisco Alvarez on the 10-day injured list retroactive to March 24, 2025. Hamate fracture. |
| Mar 27 | Frankie Montas | Status Change | New York Mets placed RHP Frankie Montas on the 15-day injured list retroactive to March 24, 2025. Right lat strain. |
| Mar 27 | Sean Manaea | Status Change | New York Mets placed LHP Sean Manaea on the 15-day injured list retroactive to March 24, 2025. Right oblique strain. |
| Mar 27 | Paul Blackburn | Status Change | New York Mets placed RHP Paul Blackburn on the 15-day injured list retroactive to March 24, 2025. Right knee inflammation. |
| Mar 25 | Sean Harney | Trade | New York Mets traded RHP Sean Harney to St. Louis Cardinals. |
| Mar 24 | Trace Willhoite | Assigned | 3B Trace Willhoite assigned to New York Mets. |
| Mar 23 | Troy Schreffler Jr. | Trade | Philadelphia Phillies traded LF Troy Schreffler to New York Mets. |
| Mar 23 | Dedniel Núñez | Optioned | New York Mets optioned RHP Dedniel Núñez to Syracuse Mets. |
| Mar 22 | Dedniel Núñez | Status Change | New York Mets reassigned RHP Dedniel Núñez to the minor leagues. |
| Mar 22 | Michael Hobbs | Trade | New York Mets traded RHP Michael Hobbs to Seattle Mariners. |
| Mar 21 | Tyler Zuber | Optioned | New York Mets optioned RHP Tyler Zuber to Syracuse Mets. |
| Mar 20 | Billy McKinney | Signed as Free Agent | New York Mets signed free agent LF Billy McKinney to a minor league contract. |
| Mar 17 | Michael Hobbs | Assigned | RHP Michael Hobbs assigned to New York Mets. |
| Mar 17 | Anthony Nunez | Assigned | RHP Anthony Nunez assigned to New York Mets. |
| Mar 17 | Ryan Ammons | Assigned | LHP Ryan Ammons assigned to New York Mets. |
| Mar 17 | Edward Lantigua | Assigned | CF Edward Lantigua assigned to New York Mets. |
| Mar 17 | Saul Garcia | Assigned | RHP Saul Garcia assigned to New York Mets. |
| Mar 17 | Sean Harney | Assigned | RHP Sean Harney assigned to New York Mets. |
| Mar 13 | Diego Castillo | Signed as Free Agent | New York Mets signed free agent SS Diego A. Castillo to a minor league contract. |
| Mar 12 | Estarling Mercado | Assigned | LF Estarling Mercado assigned to New York Mets. |
| Mar 12 | Trey Snyder | Assigned | SS Trey Snyder assigned to New York Mets. |
| Mar 12 | Dangelo Sarmiento | Assigned | 2B Dangelo Sarmiento assigned to New York Mets. |
| Mar 11 | Nick Roselli | Status Change | 2B Nick Roselli roster status changed by New York Mets. |
| Mar 11 | Nick Roselli | Assigned | 2B Nick Roselli assigned to New York Mets. |
| Mar 11 | Jacob Reimer | Assigned | 3B Jacob Reimer assigned to New York Mets. |
| Mar 11 | Corey Collins | Assigned | 1B Corey Collins assigned to New York Mets. |
| Mar 10 | Jeremy Rodriguez | Assigned | SS Jeremy Rodriguez assigned to New York Mets. |
| Mar 10 | Daiverson Gutierrez | Assigned | C Daiverson Gutierrez assigned to New York Mets. |
| Mar 9 | Rowdey Jordan | Assigned | 2B Rowdey Jordan assigned to New York Mets. |
| Mar 9 | Austin Warren | Optioned | New York Mets optioned RHP Austin Warren to Syracuse Mets. |
| Mar 9 | Kevin Herget | Optioned | New York Mets optioned RHP Kevin Herget to Syracuse Mets. |
| Mar 9 | Jared Young | Optioned | New York Mets optioned 1B Jared Young to Syracuse Mets. |
| Mar 9 | Justin Hagenman | Optioned | New York Mets optioned RHP Justin Hagenman to Syracuse Mets. |
| Mar 8 | Alexander Eneas | Signed as Free Agent | New York Mets signed free agent IF Alexander Eneas to a minor league contract. |
| Mar 8 | Trace Willhoite | Signed as Free Agent | New York Mets signed free agent 3B Trace Willhoite to a minor league contract. |
| Mar 8 | Onix Vega | Assigned | C Onix Vega assigned to New York Mets. |
| Mar 8 | Yonatan Henriquez | Assigned | 3B Yonatan Henriquez assigned to New York Mets. |
| Mar 7 | Carson Benge | Assigned | RF Carson Benge assigned to New York Mets. |
| Mar 6 | Sean Reid-Foley | Outrighted | New York Mets sent RHP Sean Reid-Foley outright to Syracuse Mets. |
| Mar 5 | Sean Reid-Foley | Status Change | RHP Sean Reid-Foley roster status changed by New York Mets. |
| Mar 4 | Hunter Parsons | Assigned | RHP Hunter Parsons assigned to New York Mets. |
| Mar 3 | Eli Serrano III | Assigned | RF Eli Serrano III assigned to New York Mets. |
| Feb 28 | José Ureña | Status Change | RHP José Ureña roster status changed by New York Mets. |
| Feb 28 | José Ureña | Signed as Free Agent | New York Mets signed free agent RHP José Ureña to a minor league contract. |
| Feb 26 | Felipe De La Cruz | Assigned | LHP Felipe De La Cruz assigned to New York Mets. |
| Feb 26 | Francisco Toledo | Assigned | C Francisco Toledo assigned to New York Mets. |
| Feb 25 | Dakota Hawkins | Assigned | RHP Dakota Hawkins assigned to New York Mets. |
| Feb 25 | Alexander Canario | Trade | Chicago Cubs traded LF Alexander Canario to New York Mets. |
| Feb 25 | Nick Madrigal | Status Change | New York Mets placed 3B Nick Madrigal on the 60-day injured list. Left shoulder fracture. |
| Feb 24 | Hector Francis | Signed as Free Agent | New York Mets signed free agent OF Hector Francis to a minor league contract. |
| Feb 24 | Maykol Vasquez | Signed as Free Agent | New York Mets signed free agent RHP Maykol Vasquez to a minor league contract. |
| Feb 24 | Joander Suarez | Assigned | RHP Joander Suarez assigned to New York Mets. |
| Feb 24 | Douglas Orellana | Assigned | RHP Douglas Orellana assigned to New York Mets. |
| Feb 24 | Channing Austin | Assigned | RHP Channing Austin assigned to New York Mets. |
| Feb 23 | Alfred Vega | Status Change | RHP Alfred Vega roster status changed by New York Mets. |
| Feb 23 | Luis Moreno | Assigned | RHP Luis Moreno assigned to New York Mets. |
| Feb 23 | Chris Suero | Status Change | C Christopher Suero roster status changed by New York Mets. |
| Feb 23 | Vincent Perozo | Assigned | C Vincent Perozo assigned to New York Mets. |
| Feb 23 | Ramon Guzman | Assigned | RHP Ramon Guzman assigned to New York Mets. |
| Feb 23 | Alfred Vega | Assigned | RHP Alfred Vega assigned to New York Mets. |
| Feb 23 | Daniel Juarez | Assigned | LHP Daniel Juarez assigned to New York Mets. |
| Feb 23 | Jordan Geber | Assigned | RHP Jordan Geber assigned to New York Mets. |
| Feb 23 | Travis Swaggerty | Assigned | LF Travis Swaggerty assigned to New York Mets. |
| Feb 23 | Willy Fanas | Assigned | CF Willy Fanas assigned to New York Mets. |
| Feb 23 | A.J. Ewing | Assigned | LF A.J. Ewing assigned to New York Mets. |
| Feb 23 | Ronald Hernandez | Assigned | C Ronald Hernandez assigned to New York Mets. |
| Feb 23 | Alex Carrillo | Assigned | RHP Alex Carrillo assigned to New York Mets. |
| Feb 23 | Luis Moreno | Assigned | RHP Luis Moreno assigned to New York Mets. |
| Feb 23 | Eduardo Herrera | Assigned | RHP Eduardo Herrera assigned to New York Mets. |
| Feb 23 | Simon Juan | Assigned | RF Simon Juan assigned to New York Mets. |
| Feb 23 | Wyatt Young | Assigned | SS Wyatt Young assigned to New York Mets. |
| Feb 23 | Chris Suero | Status Change | C Christopher Suero roster status changed by New York Mets. |
| Feb 23 | D'Andre Smith | Assigned | 2B D'Andre Smith assigned to New York Mets. |
| Feb 23 | Jefrey De Los Santos | Assigned | 2B Jefrey De Los Santos assigned to New York Mets. |
| Feb 23 | Boston Baro | Status Change | 2B Boston Baro roster status changed by New York Mets. |
| Feb 23 | Matt O'Neill | Assigned | C Matt O'Neill assigned to New York Mets. |
| Feb 23 | Alvaro Carrillo | Assigned | RHP Alvaro Carrillo assigned to New York Mets. |
| Feb 23 | Johan Moreno | Assigned | RHP Johan Moreno assigned to New York Mets. |
| Feb 23 | Roybert Herrera | Assigned | IF Roybert Herrera assigned to New York Mets. |
| Feb 23 | Chris Suero | Assigned | C Christopher Suero assigned to New York Mets. |
| Feb 23 | Boston Baro | Assigned | 2B Boston Baro assigned to New York Mets. |
| Feb 23 | Nick Morabito | Assigned | CF Nick Morabito assigned to New York Mets. |
| Feb 22 | TJ Shook | Status Change | RHP TJ Shook roster status changed by New York Mets. |
| Feb 22 | Ben Simon | Assigned | RHP Ben Simon assigned to New York Mets. |
| Feb 22 | TJ Shook | Assigned | RHP TJ Shook assigned to New York Mets. |
| Feb 22 | Trey McLoughlin | Assigned | RHP Trey McLoughlin assigned to New York Mets. |
| Feb 22 | Cameron Foster | Assigned | RHP Cameron Foster assigned to New York Mets. |
| Feb 22 | Joshua Cornielly | Assigned | RHP Joshua Cornielly assigned to New York Mets. |
| Feb 22 | Omar De Los Santos | Assigned | LF Omar De Los Santos assigned to New York Mets. |
| Feb 22 | Gilberto Celestino | Assigned | OF Gilberto Celestino assigned to New York Mets. |
| Feb 22 | Kevin Villavicencio | Assigned | SS Kevin Villavicencio assigned to New York Mets. |
| Feb 22 | Diego Mosquera | Assigned | SS Diego Mosquera assigned to New York Mets. |
| Feb 22 | William Lugo | Assigned | 3B William Lugo assigned to New York Mets. |
| Feb 22 | Nick Lorusso | Assigned | 3B Nick Lorusso assigned to New York Mets. |
| Feb 22 | Yonny Hernández | Assigned | SS Yonny Hernández assigned to New York Mets. |
| Feb 18 | Connor Overton | Status Change | RHP Connor Overton roster status changed by New York Mets. |
| Feb 18 | Connor Overton | Signed as Free Agent | New York Mets signed free agent RHP Connor Overton to a minor league contract. |
| Feb 13 | Drew Smith | Status Change | New York Mets placed RHP Drew Smith on the 60-day injured list. |
| Feb 12 | Christian Scott | Status Change | New York Mets placed RHP Christian Scott on the 60-day injured list. |
| Feb 12 | Andrew Carson | Signed as Free Agent | New York Mets signed free agent RHP Andrew Carson to a minor league contract. |
| Feb 12 | Drew Smith | Signed as Free Agent | New York Mets signed free agent RHP Drew Smith. |
| Feb 12 | Pete Alonso | Signed as Free Agent | New York Mets signed free agent 1B Pete Alonso. |
| Feb 10 | Blade Tidwell | Assigned | New York Mets invited non-roster RHP Blade Tidwell to spring training. |
| Feb 10 | Brandon Sproat | Assigned | New York Mets invited non-roster RHP Brandon Sproat to spring training. |
| Feb 10 | Yacksel Ríos | Assigned | New York Mets invited non-roster RHP Yacksel Ríos to spring training. |
| Feb 10 | Dom Hamel | Assigned | New York Mets invited non-roster RHP Dom Hamel to spring training. |
| Feb 10 | Chris Devenski | Assigned | New York Mets invited non-roster RHP Chris Devenski to spring training. |
| Feb 10 | Ty Adcock | Assigned | New York Mets invited non-roster RHP Ty Adcock to spring training. |
| Feb 10 | Drew Gilbert | Assigned | New York Mets invited non-roster CF Drew Gilbert to spring training. |
| Feb 10 | Jett Williams | Assigned | New York Mets invited non-roster SS Jett Williams to spring training. |
| Feb 10 | Luke Ritter | Assigned | New York Mets invited non-roster 2B Luke Ritter to spring training. |
| Feb 10 | Ryan Clifford | Assigned | New York Mets invited non-roster 1B Ryan Clifford to spring training. |
| Feb 10 | Hayden Senger | Assigned | New York Mets invited non-roster C Hayden Senger to spring training. |
| Feb 10 | Kevin Parada | Assigned | New York Mets invited non-roster C Kevin Parada to spring training. |
| Feb 5 | Gilberto Celestino | Signed as Free Agent | New York Mets signed free agent CF Gilberto Celestino to a minor league contract. |
| Feb 5 | Josh Hejka | Trade | New York Mets traded RHP Josh Hejka to Philadelphia Phillies. |
| Feb 5 | Luis De Los Santos | Outrighted | New York Mets sent 3B Luis De Los Santos outright to Syracuse Mets. |
| Feb 5 | Dylan Covey | Outrighted | New York Mets sent RHP Dylan Covey outright to Syracuse Mets. |
| Feb 4 | Luis De Los Santos | Status Change | 3B Luis De Los Santos roster status changed by New York Mets. |
| Jan 31 | Luis De Los Santos | Designated for Assignment | New York Mets designated 3B Luis De Los Santos for assignment. |
| Jan 31 | Nick Madrigal | Signed as Free Agent | New York Mets signed free agent 3B Nick Madrigal. |
| Jan 30 | Ryne Stanek | Signed as Free Agent | New York Mets signed free agent RHP Ryne Stanek. |
| Jan 30 | Dylan Covey | Designated for Assignment | New York Mets designated RHP Dylan Covey for assignment. |
| Jan 30 | Griffin Canning | Number Change | RHP Griffin Canning changed number to 46. |
| Jan 24 | Georwill Rodriguez | Signed as Free Agent | New York Mets signed free agent IF Georwill Rodriguez to a minor league contract. |
| Jan 23 | A.J. Minter | Signed as Free Agent | New York Mets signed free agent LHP A.J. Minter. |
| Jan 20 | Cesar Acosta | Signed as Free Agent | New York Mets signed free agent C Cesar Acosta to a minor league contract. |
| Jan 18 | Arturo Sevilla | Signed as Free Agent | New York Mets signed free agent RHP Arturo Sevilla to a minor league contract. |
| Jan 18 | Abner Meza | Signed as Free Agent | New York Mets signed free agent RHP Abner Meza to a minor league contract. |
| Jan 17 | Jesse Winker | Signed as Free Agent | New York Mets signed free agent LF Jesse Winker. |
| Jan 15 | Jose Serracin | Signed as Free Agent | New York Mets signed free agent C Jose Serracin to a minor league contract. |
| Jan 15 | Olmedo Barria | Signed as Free Agent | New York Mets signed free agent RHP Olmedo Barria to a minor league contract. |
| Jan 15 | Aiberson Blanco | Signed as Free Agent | New York Mets signed free agent OF Aiberson Blanco to a minor league contract. |
| Jan 15 | Jose Padilla | Signed as Free Agent | New York Mets signed free agent SS Jose Padilla to a minor league contract. |
| Jan 15 | Adrian Silva | Signed as Free Agent | New York Mets signed free agent C Adrian Silva to a minor league contract. |
| Jan 15 | Jose Vielma | Signed as Free Agent | New York Mets signed free agent RHP Jose Vielma to a minor league contract. |
| Jan 15 | Kleber Gamez | Signed as Free Agent | New York Mets signed free agent RHP Kleber Gamez to a minor league contract. |
| Jan 15 | Jhonael Cuello | Signed as Free Agent | New York Mets signed free agent OF Jhonael Cuello to a minor league contract. |
| Jan 15 | Yorber Semprun | Signed as Free Agent | New York Mets signed free agent SS Yorber Semprun to a minor league contract. |
| Jan 15 | Pablo Medina | Signed as Free Agent | New York Mets signed free agent LHP Pablo Medina to a minor league contract. |
| Jan 15 | Darling Perez | Signed as Free Agent | New York Mets signed free agent RHP Darling Perez to a minor league contract. |
| Jan 15 | Roni Garcia | Signed as Free Agent | New York Mets signed free agent SS Roni Garcia to a minor league contract. |
| Jan 15 | Yobanny Sanchez | Signed as Free Agent | New York Mets signed free agent RHP Yobanny Sanchez to a minor league contract. |
| Jan 15 | Giomar Ubiera | Signed as Free Agent | New York Mets signed free agent SS Giomar Ubiera to a minor league contract. |
| Jan 15 | Elian Peña | Signed as Free Agent | New York Mets signed free agent SS Elian Peña to a minor league contract. |
| Jan 15 | Austin Warren | Claimed Off Waivers | New York Mets claimed RHP Austin Warren off waivers from San Francisco Giants. |
| Jan 10 | Onix Vega | Signed as Free Agent | New York Mets signed free agent C Onix Vega to a minor league contract. |
| Jan 9 | Adbert Alzolay | Status Change | RHP Adbert Alzolay roster status changed by New York Mets. |
| Jan 9 | Adbert Alzolay | Signed as Free Agent | New York Mets signed free agent RHP Adbert Alzolay to a minor league contract. |
| Jan 6 | Carlos Guzman | Signed as Free Agent | New York Mets signed free agent RHP Carlos Guzman to a minor league contract. |