| | RW | Signed (The Tampa Bay Lightning signed F Cam Atkinson.) |
| | D | Signed (The Tampa Bay Lightning signed D Emil Lilleberg to a one-way contract extension) |
| | D | Signed (The Tampa Bay Lightning signed D Steven Santini.) |
| | LW | Signed (The Tampa Bay Lightning signed F Zemgus Girgensons.) |
| | D | Signed (The Tampa Bay Lightning signed D Derrick Pouliot to a two-way contract.) |
| | D | Signed (The Tampa Bay Lightning signed D Tobie Bisson to a two-way contract.) |
| | RW | Signed (The Tampa Bay Lightning signed F Jesse Ylonen.) |
| | LW | Traded (The Carolina Hurricanes traded F Jake Guentzel to the Tampa Bay Lightning.) From |
| | LW | Traded (The Tampa Bay Lightning traded F Bennett MacArthur to the Pittsburgh Penguins.) To |
| | LW | Became Unrestricted Free Agent (F Anthony Duclair elected free agency.) |
| | RW | Signed (The Pittsburgh Penguins traded F Lukas Svejkovsky to the Tampa Bay Lightning.) From |
| | D | Became Unrestricted Free Agent (D Philippe Myers elected free agency.) |
| | D | Became Unrestricted Free Agent (D Matt Dumba elected free agency.) |
| | LW | Traded (The Tampa Bay Lightning traded F Tanner Jeannot to the Los Angeles Kings) To |
| | D | Became Unrestricted Free Agent (D Haydn Fleury elected free agency.) |
| | D | Traded (The Tampa Bay Lightning traded D Mikhail Sergachev to the Utah Hockey Club) To
|
| | C | Drafted (The Tampa Bay Lightning drafted C Joona Saarelainen) |
| | D | Drafted (The Tampa Bay Lightning drafted D Jan Golicic) |
| | C | Traded (Utah Hockey Club traded F Conor Geekie to the Tampa Bay Lightning) From
|
| | C | Drafted (The Tampa Bay Lightning drafted F Kaden Pitre.) |
| | G | Drafted (The Tampa Bay Lightning drafted G Harrison Meneghin) |
| | D | Became Unrestricted Free Agent (D Calvin de Haan elected free agency.) |
| | C | Became Unrestricted Free Agent (F Alex Barre-Boulet elected free agency.) |
| | LW | Drafted (The Tampa Bay Lightning drafted LW Noah Steen) |
| | D | Traded (Utah Hockey Club traded D J.J. Moser to the Tampa Bay Lightning) From
|
| | LW | Drafted (The Tampa Bay Lightning drafted LW Joe Connor) |
| | C | Became Unrestricted Free Agent (F Steven Stamkos elected free agency.) |
| | RW | Drafted (The Tampa Bay Lightning drafted RW Hagen Burrows) |
| | LW | Became Unrestricted Free Agent (F Austin Watson elected free agency.) |
| | LW | Became Unrestricted Free Agent (F Tyler Motte elected free agency.) |
| | C | Signed (The Tampa Bay Lightning signed F Gage Goncalves to a two-way contract.) |
| | C | Signed (The Tampa Bay Lightning signed F Gage Goncalves to a two-way contract.) |
| | LW | Signed (The Tampa Bay Lightning signed F Gabriel Fortier.) |
| | D | Re-Signed (The Tampa Bay Lightning re-signed D Declan Carlile to a two-year, two-way contract.) |
| | C | Waived (The Tampa Bay Lightning waived F Ilya Usau.) |
| | D | Signed (The Tampa Bay Lightning signed D Dyllan Gill to a three-year, entry-level contract.) |
| | D | Traded (The Tampa Bay Lightning acquired D Ryan McDonagh in a trade.) From |
| | RW | Re-Signed (The Tampa Bay Lightning re-signed F Mitchell Chaffee to a two-year, one-way contract.) |
| | RW | Signed (The Tampa Bay Lightning signed F Niko Huuhtanen to a three-year, entry-level contract.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Emil Martinsen Lilleberg to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Maxwell Crozier to the minors.) |
| | G | Sent to minors (The Tampa Bay Lightning sent G Matt Tomkins to the minors.) |
| | D | Activated (The Tampa Bay Lightning activated D Mikhail Sergachev off Injured Reserve.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Maxwell Crozier from the minors.) |
| | LW | Signed (The Tampa Bay Lightning signed F Dylan Duke.) |
| | G | Called up from minors (The Tampa Bay Lightning recalled G Matt Tomkins from the minors.) |
| | LW | Activated (The Tampa Bay Lightning activated F Tanner Jeannot from injured reserve.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Emil Martinsen Lilleberg.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Emil Martinsen Lilleberg to the minors.) |
| | D | Traded (The Arizona Coyotes traded D Matt Dumba to the Tampa Bay Lightning.) From |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Maxwell Crozier to the minors.) |
| | LW | Traded (The San Jose Sharks traded F Anthony Duclair to the Tampa Bay Lightning.) From |
| | LW | Sent to minors (The Tampa Bay Lightning assigned F Cole Koepke to the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Max Crozier from the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Max Crozier from the minors.) |
| | C | Waived (The Tampa Bay Lightning waived F Alex Barre-Boulet.) |
| | LW | Called up from minors (The Tampa Bay Lightning recalled F Cole Koepke from the minors.) |
| | LW | Called up from minors (The Tampa Bay Lightning recalled F Cole Koepke from the minors.) |
| | LW | Placed on Injured Reserve (The Tampa Bay Lightning placed F Tanner Jeannot on Injured Reserve.) |
| | LW | Activated (The Tampa Bay Lightning activated F Tanner Jeannot.) |
| | D | Placed on Injured Reserve (The Tampa Bay Lightning placed D Mikhail Sergachev on the Injured Reserve.) |
| | LW | Activated (The Tampa Bay Lightning activated F Austin Watson from injured reserve.) |
| | D | Activated (The Tampa Bay Lightning activated D Mikhail Sergachev.) |
| | RW | Called up from minors (The Tampa Bay Lightning recalled F Mitchell Chaffee.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Maxwell Crozier to the minors.) |
| | RW | Sent to minors (The Tampa Bay Lightning assigned F Mitchell Chaffee to the minors.) |
| | C | Sent to minors (The Tampa Bay Lightning assigned F Waltteri Merela to the minors.) |
| | D | Activated (The Tampa Bay Lightning activated D Haydn Fleury.) |
| | RW | Called up from minors (The Tampa Bay Lightning recalled F Mitchell Chaffee from the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Philippe Myers to the minors.) |
| | LW | Placed on Injured Reserve (The Tampa Bay Lightning placed F Austin Watson on Injured Reserve.) |
| | C | Called up from minors (The Tampa Bay Lightning recalled F Waltteri Merela.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Philippe Myers.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Maxwell Crozier.) |
| | C | Sent to minors (The Tampa Bay Lightning assigned F Gage Goncalves to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Philippe Myers to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Maxwell Crozier to the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Max Crozier from the minors.) |
| | LW | Placed on Injured Reserve (The Tampa Bay Lightning placed F Tanner Jeannot on Injured Reserve.) |
| | C | Called up from minors (The Tampa Bay Lightning recalled F Gage Goncalves.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Jack Thompson to the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Jack Thompson from the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled DEmil Martinsen Lilleberg from the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Sean Day to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Declan Carlile to the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Declan Carlile.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Sean Day.) |
| | D | Placed on Injured Reserve (The Tampa Bay Lightning placed D Mikhail Sergachev on Injured Reserve.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Philippe Myers.) |
| | D | Sent to minors (The Tampa Bay Lightning assigned D Sean Day to the minors.) |
| | D | Placed on Injured Reserve (The Tampa Bay Lightning placed D Haydn Fleury on Injured Reserve.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Sean Day.) |
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