Leyton Orient: every transfer in and out, fees paid and earned, squad market value and €3.3m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-02-02 | Will Dennis | Bournemouth | Leyton Orient | Loan |
| 2026-02-02 | Dylan Levitt | Hibernian FC | Leyton Orient | Free |
| 2026-01-16 | Kaelan Casey | West Ham | Leyton Orient | Loan |
| 2025-08-01 | Jack Moorhouse | Man Utd U21 | Leyton Orient | Loan |
| 2025-07-29 | Joe White | Newcastle | Leyton Orient | Loan |
| 2025-07-04 | Ethan Galbraith | Leyton Orient | Swansea | €1.5m |
| 2025-07-01 | Killian Cahill | Brighton U21 | Leyton Orient | Free |
| 2025-07-01 | Dan Agyei | Leyton Orient | Kocaelispor | Free |
| 2024-08-30 | Josh Keeley | Tottenham U21 | Leyton Orient | Loan |
| 2024-08-16 | Jamie Donley | Tottenham U21 | Leyton Orient | Loan |
| 2024-07-23 | Zach Hemming | Boro U21 | Leyton Orient | Loan |
| 2024-07-16 | Lewis Warrington | Everton U21 | Leyton Orient | Free |
| 2024-07-04 | Diallang Jaiyesimi | Charlton | Leyton Orient | Free |
| 2024-02-01 | Khayon Edwards | Arsenal U21 | Leyton Orient | Loan |
| 2024-02-01 | Daniel Adu-Adjei | Bournemouth U21 | Leyton Orient | Loan |
| 2023-08-01 | Ed Turns | Brighton U21 | Leyton Orient | Loan |
| 2023-07-01 | Lawrence Vigouroux | Leyton Orient | Burnley | Free |
| 2023-07-01 | Ethan Galbraith | Man Utd U21 | Leyton Orient | Free |
| 2023-07-01 | Dan Agyei | Crewe Alexandra | Leyton Orient | Free |
| 2023-01-17 | Jamie McCart | Rotherham | Leyton Orient | Loan |