Transactions
| Date | Player | Pos | Transactions |
| 4/12 | Zane McIntyre | G | Called up from minors from Providence-AHL |
| 4/10 | Karson Kuhlman | RW | Signed as Free Agent Two-year, entry-level contract |
| 4/6 | Colby Cave | C | Sent to minors Providence-AHL |
| 4/2 | Colby Cave | C | Called up from minors from Providence-AHL |
| 3/30 | Jordan Szwarz | RW | Contract extended One-year, two-way contract extension |
| 3/30 | Jordan Szwarz | RW | Sent to minors Providence-AHL |
| 3/30 | Tommy Cross | D | Sent to minors Providence-AHL |
| 3/29 | Tommy Cross | D | Called up from minors from Providence-AHL |
| 3/29 | Paul Postma | D | Sent to minors Providence-AHL |
| 3/28 | Zdeno Chara | D | Contract extended One-year contract extension |
| 3/28 | Christian Ehrhoff | D | Retired |
| 3/21 | Wiley Sherman | D | Signed Two-year, entry-level contract |
| 3/20 | Jordan Szwarz | RW | Called up from minors from Providence-AHL |
| 3/20 | Paul Postma | D | Called up from minors from Providence-AHL |
| 3/20 | Anton Blidh | LW | Sent to minors Providence-AHL |
| 3/19 | Anton Blidh | LW | Called up from minors from Providence-AHL |
| 3/18 | Anton Blidh | LW | Sent to minors Providence-AHL |
| 3/18 | Paul Postma | D | Sent to minors Providence-AHL |
| 3/18 | Ryan Donato | C | Signed Two-year, entry-level contract |
| 3/15 | Paul Postma | D | Called up from minors from Providence-AHL |
| 3/15 | Anton Blidh | LW | Called up from minors from Providence-AHL |
| 3/13 | Trent Frederic | C | Signed Three-year, entry-level contract |
| 3/11 | David Backes | RW | Suspension Over |
| 3/10 | Cameron Hughes | C | Signed Three-year, entry-level contract |
| 3/7 | David Backes | RW | Suspended Three games by NHL for interference |
| 2/27 | Patrice Bergeron | C | Placed on IR Fractured foot |
| 2/26 | Paul Postma | D | Sent to minors Providence-AHL |
| 2/26 | Tommy Wingels | C | Traded for 2019 5th-rd pick |
| 2/25 | Brian Gionta | RW | Signed as Free Agent One-year contract |
| 2/25 | Rick Nash | RW | Traded for Three players and Two draft picks |
| 2/25 | Paul Postma | D | Waived |
| 2/25 | Chris Breen | D | Waived |
| 2/20 | Jordan Szwarz | RW | Sent to minors Providence-AHL |
| 2/20 | Nick Holden | D | Traded for O'Gara and 2018 3rd-rd pick |
| 2/16 | Jordan Szwarz | RW | Called up from minors from Providence-AHL |
| 2/11 | Austin Czarnik | C | Sent to minors Providence-AHL |
| 2/7 | Brad Marchand | LW | Suspension Over |
| 2/7 | Frank Vatrano | C | Placed on IR Lower-body injury |
| 2/5 | Austin Czarnik | C | Called up from minors from Providence-AHL |
| 2/4 | Austin Czarnik | C | Sent to minors Providence-AHL |
| 2/3 | Austin Czarnik | C | Called up from minors from Providence-AHL |
| 2/2 | Peter Cehlarik | LW | Sent to minors Providence-AHL |
| 2/2 | Kevan Miller | D | Placed on IR Upper-body injury |
| 1/31 | Peter Cehlarik | LW | Called up from minors from Providence- AHL |
| 1/31 | Anders Bjork | LW | Placed on IR Shoulder surgery |
| 1/29 | Anders Bjork | RW | Called up from minors from Providence-AHL |
| 1/26 | Anders Bjork | RW | Sent to minors Providence-AHL |
| 1/24 | Anders Bjork | RW | Called up from minors from Providence-AHL |
| 1/24 | Brad Marchand | LW | Suspended Five games for Elbowing |
| 1/24 | Noel Acciari | C | Placed on IR Lower-body injury |
| 1/22 | Charlie McAvoy | D | Placed on IR Irregular heartbeat |
| 1/3 | Anders Bjork | RW | Sent to minors Providence-AHL |
| 1/1 | Peter Cehlarik | LW | Sent to minors Providence-AHL |
| 12/22 | Colby Cave | C | Sent to minors Providence-AHL |
| 12/21 | Colby Cave | C | Called up from minors from Providence-AHL |
| 12/18 | David Krejci | C | Placed on IR Upper-body injury |
| 12/15 | Matt Beleskey | LW | Sent to minors Providence-AHL |
| 12/14 | Matt Beleskey | LW | Waived |
| 12/6 | Ryan Spooner | C | Placed on IR Lower-body injury |
| 11/28 | Jake DeBrusk | LW | Placed on IR Upper-body injury |
| 11/27 | Jordan Szwarz | RW | Sent to minors Providence-AHL |
| 11/26 | Peter Cehlarik | LW | Placed on IR Lower-body injury |
| 11/25 | Jordan Szwarz | RW | Called up from minors from Providence-AHL |
| 11/25 | Rob O'Gara | D | Sent to minors Providence-AHL |
| 11/22 | Jordan Szwarz | RW | Sent to minors Providence-AHL |
| 11/21 | Matt Grzelcyk | D | Called up from minors from Providence-AHL |
| 11/19 | Kenny Agostino | LW | Sent to minors Providence-AHL |
| 11/16 | Kenny Agostino | LW | Called up from minors from Providence-AHL |
| 11/15 | Kenny Agostino | LW | Sent to minors Providence-AHL |
| 11/13 | Peter Cehlarik | LW | Called up from minors from Providence-AHL |
| 11/13 | Kenny Agostino | LW | Called up from minors from Providence-AHL |
| 11/13 | Brad Marchand | LW | Placed on IR Undisclosed injury |
| 11/13 | Anders Bjork | LW | Placed on IR Undisclosed injury |
| 11/10 | Austin Czarnik | C | Sent to minors Providence-AHL |
| 11/7 | Zane McIntyre | G | Sent to minors Providence-AHL |
| 11/6 | Zane McIntyre | G | Called up from minors from Providence-AHL |
| 11/6 | Rob O'Gara | D | Called up from minors from Providence-AHL |
| 11/6 | Ryan White | C | Released |
| 11/5 | Zane McIntyre | G | Sent to minors Providence-AHL |
| 11/2 | Austin Czarnik | C | Called up from minors from Providence-AHL |
| 11/2 | David Backes | RW | Placed on IR Colon surgery |
| 11/1 | Zane McIntyre | G | Called up from minors from Providence-AHL |
| 11/1 | Jordan Szwarz | RW | Called up from minors from Providence-AHL |
| 10/31 | Kenny Agostino | LW | Sent to minors Providence-AHL |
| 10/31 | Zane McIntyre | G | Sent to minors Providence-AHL |
| 10/29 | Zane McIntyre | G | Called up from minors from Providence-AHL |
| 10/26 | Danton Heinen | C | Called up from minors from Providence-AHL |
| 10/22 | Zane McIntyre | G | Sent to minors Providence-AHL |
| 10/22 | Rob O'Gara | D | Sent to minors Providence-AHL |
| 10/21 | Rob O'Gara | D | Called up from minors from Providence-AHL |
| 10/20 | David Krejci | C | Placed on IR Upper-body injury |
| 10/20 | Adam McQuaid | D | Placed on IR Broken right fibula |
| 10/19 | Zane McIntyre | G | Called up from minors from Providence-AHL |
| 10/19 | Peter Cehlarik | LW | Sent to minors Providence-AHL |
| 10/18 | Kenny Agostino | LW | Called up from minors from Providence-AHL |
| 10/18 | Peter Cehlarik | LW | Called up from minors from Providence-AHL |
| 10/18 | Ryan Spooner | C | Placed on IR Right groin adductor tear |
| 10/17 | Austin Czarnik | C | Sent to minors Providence-AHL |
| 10/17 | Danton Heinen | C | Sent to minors Providence-AHL |
| 10/10 | Danton Heinen | C | Called up from minors from Providence-AHL |
| 10/10 | Ryan White | C | Signed as Free Agent Professional try-out contract |
| 10/9 | Matt Grzelcyk | D | Sent to minors Providence-AHL |
| 10/8 | Noel Acciari | C | Placed on IR Fractured finger |
| 10/6 | Oskar Steen | C | Signed with European team HKm Zvolen (Slovakia) |
| 10/5 | Emil Johansson | D | Sent to minors Providence-AHL |
| 10/5 | David Backes | RW | Placed on IR Diverticulitis |
| 10/4 | Austin Czarnik | C | Placed on IR Illness |
| 10/4 | Torey Krug | D | Placed on IR Jaw |
| 10/3 | Joona Koppanen | LW | Assigned to European Team Ilves Tampere (Finland) |
| 10/3 | Ville Leino | LW | Retired |
| 10/3 | Rob O'Gara | D | Sent to minors Providence-AHL |
| 10/2 | Teddy Purcell | LW | Released |
| 10/2 | Danton Heinen | C | Sent to minors Providence-AHL |
| 10/2 | Jakub Zboril | D | Sent to minors Providence-AHL |
| 10/2 | Jordan Szwarz | RW | Sent to minors Providence-AHL |
| 10/2 | Tommy Cross | D | Sent to minors Providence-AHL |
| 10/2 | Peter Cehlarik | LW | Sent to minors Providence-AHL |
| 10/2 | Jakob Forsbacka Karlsson | C | Sent to minors Providence-AHL |
| 10/2 | Malcolm Subban | G | Waived |
| 9/30 | Jakub Zboril | D | Called up from minors from Providence-AHL |
| 9/30 | Tommy Cross | D | Called up from minors from Providence-AHL |
| 9/30 | Jordan Szwarz | RW | Called up from minors from Providence-AHL |
| 9/30 | Kenny Agostino | LW | Sent to minors Providence-AHL |
| 9/29 | Daniel Vladar | G | Sent to minors Providence-AHL |
| 9/26 | Ryan Fitzgerald | C | Sent to minors Providence-AHL |
| 9/26 | Jeremy Lauzon | D | Sent to minors Providence-AHL |
| 9/26 | Jack Studnicka | C | Signed Three-year, entry-level contract |
| 9/25 | Jordan Szwarz | RW | Sent to minors Providence-AHL |
| 9/25 | Tommy Cross | D | Sent to minors Providence-AHL |
| 9/24 | Taylor Doherty | D | Released |
| 9/24 | Connor Clifton | D | Released |
| 9/24 | Chris Porter | LW | Released |
| 9/24 | Colton Hargrove | LW | Released |
| 9/24 | Colby Cave | C | Sent to minors Providence-AHL |
| 9/24 | Anton Blidh | LW | Sent to minors Providence-AHL |
| 9/24 | Justin Hickman | RW | Sent to minors Providence-AHL |
| 9/24 | Jesse Gabrielle | LW | Sent to minors Providence-AHL |
| 9/24 | Zane McIntyre | G | Sent to minors Providence-AHL |
| 9/24 | Zach Senyshyn | RW | Sent to minors Providence-AHL |
| 9/24 | Chris Breen | D | Sent to minors Providence-AHL |
| 9/24 | Jakub Zboril | D | Sent to minors Providence-AHL |
| 9/21 | Jack Studnicka | C | Assigned to Junior Club Oshawa-OHL |
| 9/21 | Kyle Keyser | G | Released |
| 9/18 | Cedric Pare | C | Assigned to Junior Club Saint John-QMJHL |
| 9/15 | Kyle Keyser | G | Invited to Training Camp |
| 9/14 | Teddy Purcell | LW | Invited to Training Camp |
| 9/14 | David Pastrnak | RW | Re-Signed Six-year contract |
| 8/17 | Connor Clifton | D | Signed as Free Agent Minor league contract (Providence-AHL) |
| 8/17 | Taylor Doherty | D | Signed as Free Agent Minor league contract (Providence-AHL) |
| 8/11 | Spiro Goulakos | D | Signed with European team Belfast (EIHL-United Kingdom) |
| 7/26 | Ryan Spooner | C | Re-Signed One-year contract |
| 7/17 | Austin Czarnik | C | Re-Signed One-year contract |
| 7/14 | Zane McIntyre | G | Re-Signed Two-year contract |
| 7/14 | Malcolm Subban | G | Re-Signed Two-year contract |
| 7/5 | Tim Schaller | C | Re-Signed One-year contract |
| 7/1 | Drew Stafford | RW | Became Unrestricted Free Agent |
| 7/1 | Colton Hargrove | LW | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Joe Morrow | D | Became Unrestricted Free Agent Not tendered a qualifying offer |
| 7/1 | Chris Casto | D | Became Unrestricted Free Agent |
| 7/1 | Brian Ferlin | RW | Became Unrestricted Free Agent |
| 7/1 | Tyler Randell | RW | Became Unrestricted Free Agent |
| 7/1 | Alex Grant | D | Became Unrestricted Free Agent |
| 7/1 | John-Michael Liles | D | Became Unrestricted Free Agent |
| 7/1 | Dominic Moore | C | Became Unrestricted Free Agent |
| 7/1 | Zac Rinaldo | LW | Became Unrestricted Free Agent |
| 7/1 | Jordan Szwarz | RW | Signed as Free Agent One-year contract |
| 7/1 | Kenny Agostino | LW | Signed as Free Agent One-year contract |
| 7/1 | Paul Postma | D | Signed as Free Agent One-year contract |
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