| 3/12/2018 | Recalled Peter Budaj from Syracuse (AHL). |
| 3/6/2018 | Assigned Peter Budaj to Syracuse (AHL) on conditioning assignment. |
| 3/1/2018 | Recalled Anthony Cirelli from Syracuse (AHL); Assigned Michael Bournival to Syracuse (AHL). |
| 2/27/2018 | Recalled Michael Bournival from Syracuse (AHL). |
| 2/26/2018 | Acquired defenseman Ryan McDonagh and forward J.T. Miller from the Rangers in exchange for forwards Vladislav Namestnikov and Brett Howden, defenseman Libor Hajek, a 2018 first-round draft pick and a conditional 2019 second-round draft pick |
| 2/21/2018 | Claimed Gabriel Dumont off waivers from Ottawa; assigned Dumont to Syracuse (AHL). |
| 2/21/2018 | Assigned Matthew Peca to Syracuse (AHL). |
| 2/8/2018 | Recalled Adam Erne from Syracuse (AHL). |
| 2/6/2018 | Assigned Michael Bournival to Syracuse (AHL). |
| 1/31/2018 | Acquired goaltender Edward Pasquale from Edmonton in exchange for future considerations. |
| 1/29/2018 | Recalled Louis Domingue from Syracuse (AHL). |
| 1/27/2018 | Assigned Louis Domingue to Syracuse (AHL). |
| 1/21/2018 | Recalled Matthew Peca and Michael Bournival from Syracuse (AHL). |
| 1/16/2018 | Recalled Louis Domingue from Syracuse (AHL). |
| 1/14/2018 | J.T. Brown claimed off waivers by Anaheim. |
| 1/13/2018 | Assigned Louis Domingue to Syracuse (AHL). |
| 12/31/2017 | Recalled Louis Domingue from Syracuse (AHL). |
| 12/08/2017 | Assigned Jamie McBain to Syracuse (AHL). |
| 12/04/2017 | Recalled Jamie McBain from Syracuse (AHL). |
| 12/03/2017 | Assigned Jamie McBain to Syracuse (AHL). |
| 12/02/2017 | Recalled Cory Conacher and Jamie McBain from Syracuse (AHL). |
| 11/26/2017 | Assigned Cory Conacher to Syracuse (AHL). |
| 11/25/2017 | Assigned Chris DiDomenico Syracuse (AHL) on a conditioning loan. |
| 11/24/2017 | Claimed Chris DiDomenico off waivers from Ottawa. |
| 11/24/2017 | Recalled Cory Conacher from Syracuse (AHL). |
| 11/22/2017 | Gabriel Dumont claimed off waivers by Ottawa. |
| 11/14/2017 | Acquired goaltender Louis Domingue from the Arizona Coyotes in exchange for goaltender Michael Leighton and forward Tye McGinn. |
| 10/9/2017 | Assigned Michael Bournival to Syracuse (AHL). |
| 10/2/2017 | Assigned Cory Conacher to Syracuse (AHL). |
| 10/1/2017 | Assigned Nicola Riopel to Adirondack (ECHL). |
| 9/25/2017 | Assigned Anthony Cirelli, Adam Erne, Mathieu Joseph, Tye McGinn, Matthew Peca, Mitchell Stephens, Dennis Yan, Erik Cernak, Jamie McBain, Ben Thomas and Daniel Walcott to Syracuse (AHL) and Brett Howden to Moose Jaw (WHL). |
| 9/24/2017 | Assigned Connor Ingram, Michael Leighton, Mat Bodie Matt Spencer, Alex Gallant and Carter Verhaeghe to Syracuse (AHL). Assigned Otto Somppi to Halifax (QMHJHL). Released Kevin Lynch, Shane Conacher and Reid McNeill from their professional tryout agreements. |
| 9/21/2017 | Assigned Boris Katchouk to Sault St. Marie (OHL), Cal Foote to Kelowna (WHL) and Liobor Hajek to Saskatoon (WHL). |
| 7/18/2017 | Re-signed forward Michael Bournival to a one-year, two-way contract. |
| 7/14/2017 | Re-signed forward Ondrej Palat to five-year contract. |
| 7/10/2017 | Re-signed forward Tyler Johnson to a seven-year contract. |
| 7/5/2017 | Re-signed defenseman Jake Dotchin to a two-year, one-way contract. |
| 7/5/2017 | Re-signed forward Matthew Peca to a one-year, two-way contract. |
| 7/3/2017 | Re-signed defenseman Slater Koekkoek to a one-year, one-way contract worth $800,000. |
| 7/1/2017 | Signed defenseman Jamie McBain to a one-year, two-way contract. |
| 7/1/2017 | Signed free agent left wing Alex Gallant to a one-year, two-way contract. |
| 7/1/2017 | Signed free agent left wing Chris Kunitz to a one-year contract worth $2 million. |
| 7/1/2017 | Signed defenseman Mat Bodie to a one-year, two-way contract. |
| 7/1/2017 | Signed goaltender Michael Leighton to a one-year, two-way contract. |
| 7/1/2017 | Signed free agent defenseman Dan Girardi to a two-year contract worth $3 million per year. |
| 7/1/2017 | Acquired forward Carter Verhaeghe from the New York Islanders in exchange for goaltender Kristers Gudlevskis. |
| 7/1/2017 | Signed defenseman Oleg Sosunov to three year, entry-level contract. |
| 6/29/2017 | Signed forward Alex Volkov to three-year entry-level contract. |
| 6/28/2017 | Re-signed forward Gabriel Dumont to two-year contract. |
| 6/28/2017 | Re-signed forward Cory Conacher to two-year contract. |
| 6/26/2017 | Issued qualifying offers to restricted free agents Michael Bournival, Tyler Johnson, Tye McGinn, Ondrej Palat, Matthew Peca, Tanner Richard, Jake Dotchin, Slater Koekkoek and Kristers Gudlevskis. |
| 6/26/2017 | Re-signed forward Yanni Gourde to two-year, one-way contract. |
| 6/26/2017 | Re-signed defenseman Andrej Sustr to one-year contract. |
| 6/22/2017 | Signed goaltender Peter Budaj to two-year contract. |
| 6/21/2017 | Vegas selected defenseman Jason Garrison in Expansion Draft. For drafting Garrison, the Golden Knights also receive the Lightning's 2017 second-round draft pick, Pittsburgh's 2018 fourth-round draft pick and negotiating rights with unsigned forward prospect Nikita Gusev. |
| 6/15/2017 | Acquired defenseman Mikhail Sergachev and a 2018 conditional second-round draft pick from Montreal for forward Jonathan Drouin and a 2018 sixth-round draft pick. |
| 5/15/2017 | Signed forward Taylor Raddysh to three-year, entry-level contract. |
