Charlton: every transfer in and out, fees paid and earned, squad market value, €9.4m spent and €35m earned. Tracked squad: ACTUAL Value €12m vs €20m market value. Valued as of 2026-08-25.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-20 | Arthur Okonkwo | Wrexham | Charlton | Loan |
| 2026-08-10 | Timothy Ouma | Slavia | Charlton | Loan |
| 2026-08-07 | Nathaniel Chalobah | Sheffield Wednesday | Charlton | Free |
| 2026-08-07 | Isaac Olaofe | Charlton | Lincoln City | Loan |
| 2026-08-06 | Lyndon Dykes | Charlton | Millwall | Free |
| 2026-07-26 | Millenic Alli | Luton Town | Charlton | Free |
| 2026-07-23 | Danny McNamara | Millwall | Charlton | Free |
| 2026-07-23 | Alex Mitchell | Charlton | Plymouth | Free |
| 2026-07-19 | Karlan Grant | West Bromwich Albion | Charlton | Free |
| 2026-07-06 | Zach Mitchell | Charlton | St. Johnstone FC | Loan |
| 2026-07-01 | Ivan Mesik | Heracles Almelo | Charlton | Free |
| 2026-07-01 | Billy Koumetio | Dundee FC | Charlton | Free |
| 2026-07-01 | Gassan Ahadme | Charlton | Cambridge United | Loan |
| 2026-07-01 | Terry Taylor | Charlton | Stevenage | Free |
| 2026-07-01 | Macaulay Gillesphey | Charlton | Bradford | Free |
| 2026-02-02 | Collins Sichenje | FK Vojvodina Novi Sad | Charlton | €2.2m |
| 2026-02-02 | Karoy Anderson | Charlton | Blackpool | Loan |
| 2026-01-29 | Conor Coady | Wrexham | Charlton | Loan |
| 2026-01-28 | Jayden Fevrier | Stockport | Charlton | Loan |
| 2026-01-28 | Ashley Maynard-Brewer | Charlton | Dundee United | — |