Tacoma Defiance: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-04-03 | Peter Kingston | Tacoma Defiance | Seattle | — |
| 2026-01-13 | Yu Tsukanome | Tacoma Defiance | Seattle | — |
| 2026-01-13 | Sebastian Gomez | Tacoma Defiance | Seattle | — |
| 2025-07-29 | Snyder Brunell | Tacoma Defiance | Seattle | — |
| 2025-05-08 | Osaze De Rosario | Tacoma Defiance | Seattle | — |
| 2025-03-03 | Peter Kingston | Washington | Tacoma Defiance | Free |
| 2025-01-31 | Kaito Yamada | Vissel Kobe | Tacoma Defiance | Loan |
| 2024-08-28 | Georgi Minoungou | Tacoma Defiance | Seattle | — |
| 2024-03-19 | Osaze De Rosario | York United | Tacoma Defiance | Free |
| 2024-03-07 | Kalani Kossa-Rienzi | Seattle | Tacoma Defiance | Loan |
| 2024-03-07 | Antino Lopez | Seattle | Tacoma Defiance | Loan |
| 2024-03-06 | Eythor Bjørgolfsson | Tacoma Defiance | Moss | Free |
| 2024-02-27 | Sebastian Gomez | Seattle Academy | Tacoma Defiance | — |
| 2023-12-04 | Yu Tsukanome | Dakota Fusion | Tacoma Defiance | Free |
| 2023-12-04 | Snyder Brunell | Seattle Academy | Tacoma Defiance | — |
| 2023-09-13 | Stuart Hawkins | Tacoma Defiance | Seattle | — |
| 2023-08-15 | Paul Rothrock | Tacoma Defiance | Seattle | — |
| 2023-05-16 | Cody Baker | Tacoma Defiance | Seattle | — |
| 2023-02-02 | Eythor Bjørgolfsson | Seattle | Tacoma Defiance | — |
| 2023-01-31 | Georgi Minoungou | MFK Vyskov | Tacoma Defiance | — |