Grimsby Town: every transfer in and out, fees paid and earned, squad market value, €87k spent.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Jude Soonsup-Bell | Grimsby Town | Without Club | — |
| 2026-01-30 | Maldini Kacurri | Arsenal U21 | Grimsby Town | — |
| 2025-08-11 | Jude Soonsup-Bell | Córdoba CF | Grimsby Town | Free |
| 2025-01-31 | Géza Dávid Turi | Víkingur | Grimsby Town | €87k |
| 2024-02-01 | Michee Efete | Grimsby Town | Ross County | Free |
| 2023-07-01 | Max Crocombe | Grimsby Town | Burton Albion | Free |
| 2023-05-31 | John McAtee | Grimsby Town | Luton | Free |
| 2022-08-02 | John McAtee | Grimsby Town | Luton | Loan |
| 2022-03-05 | Callum Jones | Hull City | Grimsby Town | Loan |
| 2021-07-30 | Max Crocombe | Melb. Victory | Grimsby Town | Free |
| 2021-07-27 | Sebastian Revan | Aston Villa U23 | Grimsby Town | Loan |
| 2021-07-01 | Michee Efete | Wealdstone | Grimsby Town | Free |
| 2021-07-01 | John McAtee | Scunthorpe Utd. | Grimsby Town | Free |
| 2020-01-08 | Sebastian Ring | Grimsby Town | Kalmar FF | Free |
| 2019-01-01 | Sebastian Ring | Örebro SK | Grimsby Town | Free |
| 2017-08-09 | Diallang Jaiyesimi | Norwich U21 | Grimsby Town | Loan |
| 2016-08-31 | Dean Henderson | Man Utd U23 | Grimsby Town | Loan |
| 2015-10-12 | Conor Townsend | Hull City | Grimsby Town | Loan |
| 2011-10-25 | Conor Townsend | Hull City | Grimsby Town | Loan |