Derry City: every transfer in and out, fees paid and earned, squad market value, €250k spent and €250k earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-03 | Rob Slevin | Derry City | Coleraine | Loan |
| 2026-07-22 | Brooklyn Lyons-Foster | HJK Helsinki | Derry City | Free |
| 2026-07-08 | Nick Twisk | Jong AZ | Derry City | Free |
| 2026-07-01 | Dipo Akinyemi | Derry City | York City | Free |
| 2026-07-01 | Ben Doherty | Derry City | Coleraine | Free |
| 2026-02-23 | Barry Cotter | Barnsley | Derry City | Free |
| 2026-02-19 | Eddie Beach | Kilmarnock FC | Derry City | Loan |
| 2026-01-22 | Sadou Diallo | Derry City | Bohemians | Free |
| 2026-01-19 | Josh Thomas | Swansea City | Derry City | Loan |
| 2026-01-19 | Adam Frizzell | Derry City | Linfield | Free |
| 2026-01-17 | James McClean | Wrexham | Derry City | Free |
| 2026-01-16 | Patrick McClean | Sligo Rovers | Derry City | €100k |
| 2026-01-01 | Darragh Markey | Drogheda United | Derry City | Free |
| 2026-01-01 | James Olayinka | Waterford FC | Derry City | Free |
| 2026-01-01 | Rob Slevin | Galway United | Derry City | Free |
| 2026-01-01 | James Clarke | Bohemians | Derry City | Free |
| 2026-01-01 | Mark Connolly | Derry City | Coleraine | Free |
| 2026-01-01 | Hayden Cann | Derry City | Waterford FC | Free |
| 2026-01-01 | Sam Todd | Derry City | Bohemians | Free |
| 2026-01-01 | Ronan Boyce | Derry City | St Patrick's | Free |