Transactions
| Date | Player | Pos | Transactions |
| 12/6 | Brian Allen | CB | pract. squad add |
| 12/6 | Linden Stephens | CB | pract. squad del |
| 12/5 | Jermaine Grace | LB | pract. squad add |
| 12/5 | Brian Allen | CB | pract. squad del |
| 11/26 | Wes Saxton | TE | pract. squad add |
| 11/22 | Tyrone Swoopes | TE | active/prac. squad |
| 11/22 | Ed Dickson | TE | on IR knee |
| 11/20 | Jamar Taylor | CB | cut |
| 11/20 | Pita Taumoepenu | LB | pract. squad add |
| 11/5 | Phil Haynes | G | Activated from PUPL |
| 11/5 | Gary Jennings | WR | cut |
| 11/5 | Bryan Mone | DT | pract. squad add |
| 11/5 | Cody Thompson | WR | pract. squad del |
| 11/1 | Dekoda Watson | DE | cut |
| 11/1 | Josh Gordon | WR | acquired from waiver |
| 10/30 | Dekoda Watson | DE | signed |
| 10/30 | Cody Thompson | WR | pract. squad add |
| 10/30 | Bryan Mone | DT | pract. squad del |
| 10/30 | Tedric Thompson | S | on IR shoulder |
| 10/29 | Jordan Roos | G | active/prac. squad |
| 10/29 | Bryan Mone | DT | pract. squad add |
| 10/29 | Justin Britt | C | on IR torn left ACL |
| 10/25 | Jordan Roos | G | pract. squad add |
| 10/25 | Malik Carney | LB | pract. squad del |
| 10/23 | Jordan Roos | G | cut |
| 10/23 | Malik Carney | LB | pract. squad add |
| 10/23 | Bryan Mone | DT | pract. squad del |
| 10/22 | Quandre Diggs | CB | traded w/ pick for 2020 fifth-round draft pick |
| 10/22 | Penny Hart | WR | pract. squad add |
| 10/19 | Will Dissly | TE | on IR ruptured Achilles tendon |
| 10/18 | Terry Wright | WR | pract. squad del |
| 10/15 | Adrian Colbert | CB | pract. squad add |
| 10/15 | Tyrone Swoopes | TE | pract. squad add |
| 10/15 | Chad Wheeler | T | pract. squad add |
| 10/15 | Brian Allen | CB | pract. squad add |
| 10/15 | Malik Carney | LB | pract. squad del |
| 10/15 | Parry Nickerson | CB | pract. squad del |
| 10/14 | Jarran Reed | DT | suspension lifted |
| 10/12 | Adrian Colbert | CB | cut |
| 10/12 | Jacob Hollister | TE | active/prac. squad |
| 10/12 | Jordan Roos | G | active/prac. squad |
| 9/30 | Justin Currie | LB | cut |
| 9/30 | Justin Currie | LB | off IR |
| 9/28 | Bryan Mone | DT | pract. squad add |
| 9/28 | Elijah Nkansah | T | pract. squad del |
| 9/26 | Bryan Mone | DT | cut |
| 9/26 | Adrian Colbert | CB | active/prac. squad |
| 9/26 | Linden Stephens | CB | pract. squad add |
| 9/25 | Luke Willson | TE | signed |
| 9/25 | Malik Carney | LB | pract. squad add |
| 9/23 | Jachai Polite | LB | pract. squad del |
| 9/18 | Adrian Colbert | CB | pract. squad add |
| 9/18 | Elijah Nkansah | T | pract. squad add |
| 9/18 | Jazz Ferguson | WR | pract. squad del |
| 9/17 | Cardale Jones | QB | pract. squad del |
| 9/12 | Parry Nickerson | CB | pract. squad add |
| 9/10 | Jamar Taylor | CB | signed |
| 9/10 | Parry Nickerson | CB | cut |
| 9/7 | Cardale Jones | QB | pract. squad add |
| 9/7 | Elijah Nkansah | T | pract. squad del |
| 9/2 | Nick Bellore | RB | signed |
| 9/2 | Austin Calitro | LB | cut |
| 9/2 | Jachai Polite | LB | pract. squad add |
| 9/2 | Kyle Fuller | G | pract. squad add |
| 9/2 | Jaron Brown | WR | signed |
| 9/2 | Kahlil McKenzie | G | pract. squad add |
| 9/2 | Ryan Neal | S | pract. squad add |
| 9/1 | Geno Smith | QB | re-signed |
| 9/1 | Jazz Ferguson | WR | pract. squad add |
| 9/1 | Terry Wright | WR | pract. squad add |
| 9/1 | Jacob Hollister | TE | pract. squad add |
| 9/1 | Simeon Thomas | CB | pract. squad add |
| 9/1 | Jordan Roos | G | pract. squad add |
| 9/1 | Elijah Nkansah | T | pract. squad add |
| 9/1 | Jeremy Boykins | CB | on IR |
| 9/1 | Justin Currie | LB | on IR |
| 8/31 | Jadeveon Clowney | DE | traded for Jacob Martin and Barkevious Mingo |
| 8/31 | Paxton Lynch | QB | cut |
| 8/31 | DeShawn Shead | CB | cut |
| 8/31 | Earl Mitchell | DT | cut |
| 8/31 | Jazz Ferguson | WR | cut |
| 8/31 | Jamar Taylor | CB | cut |
| 8/31 | Cassius Marsh | LB | cut |
| 8/31 | Parry Nickerson | CB | traded for conditional 2021 7th-round pick |
| 8/31 | Nick Bellore | RB | cut |
| 8/31 | Jaron Brown | WR | cut |
| 8/31 | Marcus Martin | G | cut |
| 8/31 | Jamie Meder | DT | cut |
| 8/31 | Geno Smith | QB | cut |
| 8/31 | J.T. Barrett IV | QB | cut |
| 8/31 | Jackson Harris | TE | cut |
| 8/31 | Will Holden | G | cut |
| 8/31 | Jacob Hollister | TE | cut |
| 8/31 | Jawuan Johnson | LB | cut |
| 8/31 | Kahlil Lewis | WR | cut |
| 8/31 | Shalom Luani | S | cut |
| 8/31 | J.D. McKissic | RB | cut |
| 8/31 | Nyqwan Murray | WR | cut |
| 8/31 | Elijah Nkansah | T | cut |
| 8/31 | Keenan Reynolds | WR | cut |
| 8/31 | Jordan Roos | G | cut |
| 8/31 | Wes Saxton | TE | cut |
| 8/31 | Bo Scarbrough | RB | cut |
| 8/31 | Logan Tago | DE | cut |
| 8/31 | Simeon Thomas | CB | cut |
| 8/31 | Landon Turner | G | cut |
| 8/31 | Xavier Turner | RB | cut |
| 8/31 | Brian Wallace | T | cut |
| 8/31 | Terry Wright | WR | cut |
| 8/31 | Juwon Young | LB | cut |
| 8/31 | Demarcus Christmas | DT | Placed on PUPL |
| 8/31 | Phil Haynes | G | Placed on PUPL |
| 8/31 | Jordan Simmons | G | on IR undisclosed |
| 8/29 | Will Holden | G | signed |
| 8/28 | Jay-Tee Tiuli | DT | cut |
| 8/28 | Logan Tago | DE | signed |
| 8/27 | Nyqwan Murray | WR | signed |
| 8/27 | Kahlil Lewis | WR | signed |
| 8/27 | Amara Darboh | WR | cut |
| 8/27 | Nazair Jones | DT | on IR knee |
| 8/27 | Kalan Reed | CB | on IR neck |
| 8/21 | Jalen Harvey | S | cut |
| 8/21 | Brian Wallace | T | signed |
| 8/20 | Landon Turner | G | signed |
| 8/20 | Demetrius Knox | G | on IR knee |
| 8/14 | Davante Davis | CB | cut |
| 8/14 | Davante Davis | CB | off IR undisclosed |
| 8/13 | Tyrone Swoopes | TE | cut |
| 8/13 | Tyrone Swoopes | TE | off IR undisclosed |
| 8/11 | J.T. Barrett IV | QB | signed |
| 8/11 | Juwon Young | LB | signed |
| 8/10 | Marwin Evans | S | cut |
| 8/10 | Chris Worley | LB | cut |
| 8/9 | Davante Davis | CB | on IR undisclosed |
| 8/8 | Xavier Turner | RB | signed |
| 8/6 | Nyqwan Murray | WR | cut |
| 8/6 | Chris Worley | LB | signed |
| 8/4 | Justin Johnson | TE | on IR undisclosed |
| 8/4 | Tyrone Swoopes | TE | on IR undisclosed |
| 8/3 | Jackson Harris | TE | signed |
| 8/3 | Wes Saxton | TE | signed |
| 8/1 | Nyqwan Murray | WR | signed |
| 7/31 | Daniel Williams | WR | cut |
| 7/27 | Caleb Scott | WR | cut |
| 7/27 | DeShawn Shead | CB | signed/unrest FA |
| 7/27 | Jawuan Johnson | LB | signed |
| 7/27 | Emmanuel Ellerbee | LB | on IR undisclosed |
| 7/24 | Earl Mitchell | DT | signed/unrest FA |
| 7/24 | Daniel Williams | WR | signed |
| 7/24 | Marcelias Sutton | RB | cut |
| 7/24 | Derrek Thomas | CB | cut |
| 7/22 | Jarran Reed | DT | suspended 6 games (NFL Personal Conduct Policy) |
| 6/10 | Cody Barton | LB | signed/draft choice Four-year contract (through 2022) |
| 5/30 | Adam Choice | RB | on IR undisclosed |
| 5/29 | Marcelias Sutton | RB | signed |
| 5/22 | DK Metcalf | WR | signed/draft choice Four-year contract (through 2022) |
| 5/21 | L.J. Collier | DE | signed/draft choice Four-year contract (fifth-year option) |
| 5/15 | Geno Smith | QB | signed/unrest FA |
| 5/14 | Demarcus Christmas | DT | signed/draft choice Four-year contract (through 2022) |
| 5/14 | Travis Homer | RB | signed/draft choice Four-year contract (through 2022) |
| 5/14 | Gary Jennings | WR | signed/draft choice Four-year contract (through 2022) |
| 5/14 | John Ursua | WR | signed/draft choice Four-year contract (through 2022) |
| 5/13 | Al Woods | DT | signed/unrest FA One-year contract (through 2019) |
| 5/13 | Doug Baldwin | WR | retired |
| 5/13 | Taryn Christion | QB | cut |
| 5/13 | Mik'Quan Deane | TE | cut |
| 5/10 | Ezekiel Ansah | DE | signed/unrest FA One-year contract (through 2019) |
| 5/10 | Nate Orchard | LB | cut |
| 5/9 | Nick Bellore | RB | signed/unrest FA |
| 5/9 | Marcus Martin | G | signed/unrest FA |
| 5/9 | Jamar Taylor | CB | signed/unrest FA |
| 5/9 | Doug Baldwin | WR | cut |
| 5/6 | Ugo Amadi | S | signed/draft choice Four-year contract (through 2022) |
| 5/6 | Marquise Blair | S | signed/draft choice Four-year contract (through 2022) |
| 5/6 | Ben Burr-Kirven | LB | signed/draft choice Four-year contract (through 2022) |
| 5/6 | Phil Haynes | G | signed/draft choice Four-year contract (through 2022) |
| 5/3 | Taryn Christion | QB | signed |
| 5/3 | Derrek Thomas | CB | signed |
| 5/3 | Terry Wright | WR | signed |
| 5/3 | Davante Davis | CB | signed |
| 5/3 | Adam Choice | RB | signed |
| 5/3 | Jalen Harvey | S | signed |
| 5/3 | Jay-Tee Tiuli | DT | signed |
| 5/3 | Mik'Quan Deane | TE | signed |
| 5/3 | Jazz Ferguson | WR | signed |
| 5/3 | Bryan Mone | DT | signed |
| 5/3 | Justin Johnson | TE | signed |
| 5/3 | Demetrius Knox | G | signed |
| 5/2 | Germain Ifedi | G | team declines option Fifth-year option on rookie contract |
| 5/1 | Marcus Henry | C | cut |
| 4/29 | Jacob Hollister | TE | traded for conditional 2020 7th-round pick |
| 4/28 | Sebastian Janikowski | K | retired |
| 4/16 | Russell Wilson | QB | re-signed Four-year extension (through 2023) |
| 4/15 | Austin Calitro | LB | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | Joey Hunt | C | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | Shalom Luani | S | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | J.D. McKissic | RB | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | David Moore | WR | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | Tyler Ott | TE | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | Kalan Reed | CB | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | Jordan Simmons | G | re-signed/excl. FA One-year tender (through 2019) |
| 4/15 | Quinton Jefferson | DE | re-signed/rest FA One-year contract (through 2019) |
| 4/15 | George Fant | T | re-signed/rest FA One-year contract (through 2019) |
| 4/12 | Emmanuel Beal | LB | cut |
| 4/12 | Sam Ficken | K | cut |
| 4/4 | Cassius Marsh | LB | signed One-year contract (through 2019) |
| 4/4 | Nate Orchard | LB | signed One-year contract (through 2019) |
| 3/25 | Neiko Thorpe | CB | re-signed/unrest FA One-year contract (through 2019) |
| 3/18 | Mychal Kendricks | LB | re-signed/unrest FA One-year contract (through 2019) |
| 3/14 | Mike Iupati | G | signed/unrest FA One-year contract (through 2019) |
| 3/14 | K.J. Wright | LB | re-signed/unrest FA Two-year contract (through 2020) |
| 3/14 | D.J. Fluker | G | re-signed/unrest FA Two-year contract (through 2020) |
| 3/14 | Jason Myers | K | signed/unrest FA Four-year contract (through 2022) |
| 3/13 | George Fant | T | Restricted Free Agent |
| 3/13 | Quinton Jefferson | DE | Restricted Free Agent |
| 3/13 | Maurice Alexander | LB | Declared Free Agent |
| 3/13 | Justin Coleman | CB | Declared Free Agent |
| 3/13 | Mike Davis | RB | Declared Free Agent |
| 3/13 | D.J. Fluker | G | Declared Free Agent |
| 3/13 | Brett Hundley | QB | Declared Free Agent |
| 3/13 | Sebastian Janikowski | K | Declared Free Agent |
| 3/13 | Dion Jordan | DE | Declared Free Agent |
| 3/13 | Mychal Kendricks | LB | Declared Free Agent |
| 3/13 | Shamar Stephen | DT | Declared Free Agent |
| 3/13 | J.R. Sweezy | G | Declared Free Agent |
| 3/13 | Earl Thomas III | S | Declared Free Agent |
| 3/13 | Neiko Thorpe | CB | Declared Free Agent |
| 3/13 | K.J. Wright | LB | Declared Free Agent |
| 3/13 | T.J. Mutcherson | S | Declared Free Agent |
| 3/13 | Tre Madden | RB | Declared Free Agent |
| 3/13 | T.J. Green | CB | Declared Free Agent |
| 3/13 | Ricky Ali'ifua | DE | Declared Free Agent |
| 3/13 | Emmanuel Ellerbee | LB | re-signed/excl. FA One-year tender (through 2019) |
| 3/13 | Branden Jackson | DE | re-signed/excl. FA One-year tender (through 2019) |
| 3/8 | Akeem King | CB | re-signed One-year contract (through 2019) |
| 3/4 | Frank Clark | DE | Designated franchise player non-exclusive franchise tag |
Last updated Dec. 11, 1:06 A.M. ET
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