| 12/11/2018 | Reassigned G Eddie Pasquale to Syracuse (AHL). |
| 12/2/2018 | Recalled G Eddie Pasquale from Syracuse (AHL). |
| 11/29/2018 | Recalled G Connor Ingram from Syracuse (AHL). Reassigned G Eddie Pasquale to Syracuse (AHL). |
| 11/15/2018 | Recalled G Eddie Pasquale from Syracuse (AHL). |
| 11/13/2018 | Recalled D Erik Cernak from Syracuse (AHL). |
| 11/9/2018 | Assigned D Cameron Gaunce to Syracuse (AHL). |
| 11/2/2018 | Re-Signed Yanni Gourde to six-year contract. |
| 10/28/2018 | Recalled F Danick Martel from Syracuse (AHL). |
| 10/27/2018 | Recalled D Cameron Gaunce from Syracuse (AHL). |
| 10/18/2018 | Acquired F Mitch Hults from Anaheim for future considerations and assigned him to Syracuse (AHL). |
| 10/18/2018 | Assigned Cory Conacher to Syracuse (AHL). |
| 10/18/2018 | Assigned Danick Martel to Syracuse (AHL) for conditioning stint. |
| 10/17/2018 | Re-Signed Cory Conacher to one-year contract. |
| 9/30/2018 | Assigned F Mitchell Stephens, D Erik Cernak and F Alexander Volkov to Syracuse (AHL). |
| 9/24/2018 | Assigned F Gabriel Dumont and F Andy Andreoff to Syracuse (AHL). |
| 9/23/2018 | Assigned F Taylor Raddysh, F Ross Colton, F Otto Somppi, D Oleg Sosunov, F Michael Bournival, D Matt Spencer, F Kevin Lynch, F Jonne Tammela, G Eddie Pasquale, D Dominik Masin, F Dennis Yan, D Daniel Walcott, G Connor Ingram, F Carter Verhaeghe, D CameronGaunce, D Callan Foote, F Boris Katchouk, D Ben Thomas, F Alexei Lipanov, F Alex Barre-Boulet to Syracuse (AHL). |
| 9/22/2018 | Claimed F Danick Martel off waivers from Philadelphia. |
| 9/19/2018 | Assigned D Walter Flower to Halifax (QMJHL), D Radim Salda to Saint John (QMJHL), D Montana Onyebuchi to Everett (WHL), F Matthew MacDougall to Windsor (OHL), F Jackson Leppard to Prince George (WHL), F Gabriel Fortier to Bale-Comeau (QMJHL), F Chase Wouters to Saskatoon (WHL). |
| 9/19/2018 | Released D Jake Dotchin. |
| 7/10/2018 | Re-signed F Nikita Kucherov to eight-year contract. |
| 7/5/2018 | Re-signed F Cedric Paquette to one-year contract. |
| 7/2/2018 | Re-signed D Slater Koekkoek to one-year contract. |
| 7/2/2018 | Signed D Ryan McDonagh to seven-year contract. |
| 6/26/2018 | Signed F J.T. Miller to five-year contract. |
| 6/22/2018 | Named Jeff Halpern assistant coach. |
| 6/22/2018 | Signed goaltender G Louis Domingue to two-year contract. |
| 6/19/2018 | Signed goaltender G Eddie Pasquale to one-year, two-way contract. |
| 6/7/2018 | Re-signed defenseman D Daniel Walcott to one-year, two-way contract. |
