West Ham United (Premier League): every transfer in and out, fees paid and earned, squad market value, €1171m spent and €775m earned. Tracked squad: ACTUAL Value €248m, in line with the market. Valued as of 2026-08-25.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-21 | Divine Mukasa | Manchester City U21 | West Ham United | Loan |
| 2026-08-21 | Aaron Wan-Bissaka | West Ham United | Aston Villa | Loan |
| 2026-08-19 | Joël Piroe | Leeds United | West Ham United | Loan |
| 2026-08-18 | Niclas Füllkrug | West Ham United | SV Werder Bremen | Loan |
| 2026-08-10 | Manor Solomon | Tottenham Hotspur | West Ham United | €5.8m |
| 2026-08-06 | Joël Veltman | Brighton & Hove Albion | West Ham United | Free |
| 2026-08-04 | Freddie Potts | West Ham United | Club Brugge KV | €10m |
| 2026-07-30 | Callum Marshall | West Ham United | Luton Town | Free |
| 2026-07-24 | Crysencio Summerville | West Ham United | Al-Hilal | €65m |
| 2026-07-09 | Callum Wilson | West Ham United | Brentford FC | Free |
| 2026-07-02 | Mateus Fernandes | West Ham United | Tottenham Hotspur | €99m |
| 2026-02-02 | Axel Disasi | Chelsea | West Ham | Loan |
| 2026-01-28 | Adama Traoré | Fulham | West Ham | €2.3m |
| 2026-01-28 | James Ward-Prowse | West Ham | Burnley | Loan |
| 2026-01-28 | Lucas Paquetá | West Ham | Flamengo | €42m |
| 2026-01-26 | Guido Rodríguez | West Ham | Valencia | Free |
| 2026-01-22 | Keiber Lamadrid | Dep. La Guaira | West Ham | Loan |
| 2026-01-18 | Andrew Irving | West Ham | Sparta Prague | €1.5m |
| 2026-01-16 | Kaelan Casey | West Ham | Leyton Orient | Loan |
| 2026-01-07 | Callum Marshall | West Ham | VfL Bochum | Loan |