West Ham U18 (Premier League U18): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-07-04 | Ben Nightingale | West Ham U18 | Dagenham & Redbridge | Free |
| 2025-07-01 | Joe Scanlon | West Ham United Yth. | West Ham U18 | Free |
| 2025-07-01 | Harry Montague | West Ham United Yth. | West Ham U18 | Free |
| 2025-07-01 | Tomas Jonyla | West Ham United Yth. | West Ham U18 | Free |
| 2025-07-01 | Gabriel Caliste | West Ham U18 | West Ham United U21 | Free |
| 2025-07-01 | Flisha Sowanmi | West Ham U18 | West Ham United U21 | Free |
| 2025-07-01 | Preston Fearon | West Ham U18 | West Ham United U21 | Free |
| 2025-07-01 | Rayan Oyebade | West Ham U18 | West Ham United U21 | Free |
| 2025-07-01 | Jethro Medine | West Ham U18 | West Ham United U21 | Free |
| 2025-07-01 | Riley Hargan | West Ham U18 | West Ham United U21 | Free |
| 2025-07-01 | Mehmet Halim | West Ham U18 | Sutton United | Free |
| 2024-07-02 | Jemiah Umolu | West Ham U18 | Crystal Palace U21 | Free |
| 2024-07-01 | Lewis Beckford | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Jonathan Unwin | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Aaron Kamara | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Finley Hooper | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Andre Dike | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Airidas Golambeckis | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Chinaza Nwosu | West Ham United Yth. | West Ham U18 | Free |
| 2024-07-01 | Lanre Awesu | West Ham United Yth. | West Ham U18 | Free |