| | 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 from the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Declan Carlile to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Steven Santini to the minors.) |
| | D | Placed on Injured Reserve (The Tampa Bay Lightning placed Janis Moser on injured reserve.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Declan Carlile from the minors.) |
| | D | Called up from minors (The Tampa Bay Lightning recalled D Steven Santini from the minors.) |
| | G | Sent to minors (The Tampa Bay Lightning sent G Matt Tomkins to the minors.) |
| | LW | Called up from minors (The Tampa Bay Lightning recalled F Conor Sheary from the minors.) |
| | G | Called up from minors (The Tampa Bay Lightning recalled G Matt Tomkins from the minors.) |
| | C | Called up from minors (The Tampa Bay Lightning recalled F Gage Goncalves from the minors.) |
| | C | Sent to minors (The Tampa Bay Lightning sent F Gage Goncalves to the minors.) |
| | C | Called up from minors (The Tampa Bay Lighning recalled F Gage Goncalves from the minors.) |
| | C | Sent to minors (The Tampa Bay Lightning sent F Gage Goncalves to the minors.) |
| | C | Called up from minors (The Tampa Bay Lightning recalled F Gage Goncalves from the minors.) |
| | LW | Activated (The Tampa Bay Lightning activated F Gabriel Fortier from the Injured Reserve.) |
| | LW | Waived (The Tampa Bay Lightning waived F Gabriel Fortier.) |
| | LW | Waived (The Tampa Bay Lightning waived F Conor Sheary.) |
| | C | Activated (The Tampa Bay Lightning activated F Michael Eyssimont from injured reserve non-roster list.) |
| | C | Placed on Injured Reserve (The Tampa Bay Lightning placed F Michael Eyssimont on Injured Reserved.) |
| | LW | Placed on Injured Reserve (The Tampa Bay Lightning placed F Gabriel Fortier on injured reserve non-roster list.) |
| | C | Released (The Tampa Bay Lightning released F Logan Brown.) |
| | D | Sent to minors (The tampa Bay Lightning sent D Maxwell Crozier to the minors.) |
| | C | Sent to minors (The Tampa Bay Lightning sent F Gabriel Szturc to the minors.) |
| | RW | Sent to minors (The Tampa Bay Lightning sent F Maxim Groshev to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Declan Carlile to the minors.) |
| | RW | Sent to minors (The Tampa Bay Lightning sent F Ethan Gauthier to the minors.) |
| | LW | Sent to minors (The Tampa Bay Lightning sent F Dylan Duke to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Steven Santini to the minors.) |
| | C | Sent to minors (The Tampa Bay Lightning sent F Gage Goncalves to the minors.) |
| | C | Activated (The Tampa Bay Lightning activated F Conor Geekie from suspension.) |
| | C | Suspension Over (The Tampa Bay Lightning reinstated F Conor Geekie from suspension.) |
| | C | Released (The Tampa Bay Lightning released F Logan Brown.) |
| | G | Waived (The Tampa Bay Lightning waived G Matt Tomkins.) |
| | C | Called up from minors (The Tampa Bay Lightning recalled F Gabriel Szturc from the minors.) |
| | C | Suspended (The NHL suspended F Conor Geekie for one preseason game.) |
| | LW | Called up from minors (The Tampa Bay Lightning recalled F Dylan Duke from the minors.) |
| | D | Waived (The Tampa Bay Lightning waived D Tobie Bisson.) |
| | LW | Released (The Tampa Bay Lightning released F Joel Teasdale.) |
| | LW | Released (The Tampa Bay Lightning released F Kyle Chyzowski.) |
| | G | Released (The Tampa Bay Lightning released G Brandon Halverson.) |
| | G | Released (The Tampa Bay Lightning released G Ryan Fanti.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Roman Schmidt to the minors.) |
| | LW | Sent to minors (The Tampa Bay Lightning sent F Dylan Duke to the minors.) |
| | C | Released (The Tampa Bay Lightning released F Ethan Hay.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Dyllan Gill to the minors.) |
| | LW | Sent to minors (The Tampa Bay Lightning sent F Jaydon Dureau to the minors.) |
| | LW | Released (The Tampa Bay Lightning released F Daniel Walcott.) |
| | RW | Sent to minors (The Tampa Bay Lightning sent F Lucas Edmonds to the minors.) |
| | D | Released (The Tampa Bay Lightning released D Jace Weir.) |
| | C | Released (The Tampa Bay Lightning released F Gabriel Dumont.) |
| | G | Released (The Tampa Bay Lightning released G Harrison Meneghin.) |
| | RW | Sent to minors (The Tampa Bay Lightning sent F Niko Huuhtanen to the minors.) |
| | C | Released (The Tampa Bay Lightning released F Kaden Pitre.) |
| | LW | Released (The Tampa Bay Lightning released F Jujhar Khaira.) |
| | C | Sent to minors (The Tampoa Bay Lightning sent F Gabriel Szturc to the minors.) |
| | D | Waived (The Tampa Bay Lightning waived D Derrick Pouliot.) |
| | D | Released (The Tampa Bay Lightning released D Jan Golicic.) |
| | C | Sent to minors (The Tampa Bay Lightning sent F Milo Roelens to the minors.) |
| | D | Released (The Tampa Bay Lightning released D Scott Walford.) |
| | RW | Sent to minors (The Tampa Bay Lightning sent F Lukas Svejkovsky to the minors.) |
| | D | Sent to minors (The Tampa Bay Lightning sent D Tobie Paquette-Bisson to the minors.) |
| | D | Waived (The Tampa Bay Lightning waived D Derrick Pouliot.) |
| | LW | Released (The Tampa Bay Lightning released F Kale Kessy.) |
| | LW | Signed (The Tampa Bay Lightning signed F Kale Kessy.) |
| | LW | Signed (The Tampa Bay Lightning signed F Joel Teasdale.) |
| | LW | Signed (The Tampa Bay Lightning signed F Daniel Walcott.) |
| | G | Signed (The Tampa Bay Lightning signed G Ryan Fanti.) |
| | C | Signed (The Tampa Bay Lightning signed F Gabriel Dumont.) |
| | LW | Signed (The Tampa Bay Lightning signed F Jujhar Khaira.) |
| | C | Signed (The Tampa Bay Lightning signed F Logan Brown to a professional tryout.) |
| | 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.) |
| | C | 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.) |
| | C | 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.) |
| | C | 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.) |
| | 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 |