Peterborough: every transfer in and out, fees paid and earned, squad market value, €14m spent and €47m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-13 | Ethan Williams | Manchester United U23 | Peterborough | Free |
| 2026-08-13 | A. Collins | Peterborough | Huddersfield Town | Free |
| 2026-07-30 | Tom Lees | Peterborough | Harrogate Town | Free |
| 2026-07-10 | Jacob Mendy | Peterborough | Bromley | Free |
| 2026-07-09 | B. Ihionvien | Peterborough | Colchester United | Loan |
| 2026-07-02 | A. Odoh | Peterborough | Salford City | Free |
| 2026-07-02 | C. Hayes | Peterborough | Rochdale | Free |
| 2026-07-01 | Thomas O'Connor | Wrexham | Peterborough | Free |
| 2026-07-01 | Evan Weir | Walsall | Peterborough | Free |
| 2026-07-01 | Owura Edwards | Colchester United | Peterborough | Free |
| 2026-07-01 | Harrison Jones | Sunderland AFC | Peterborough | Free |
| 2026-02-02 | Jacob Mendy | Wrexham | Peterborough | Free |
| 2026-01-29 | Gustav Lindgren | Peterborough | Häcken | — |
| 2025-10-09 | C. Conn-Clarke | Peterborough | Carlisle United | Loan |
| 2025-09-02 | Jacob Wakeling | Peterborough | Solihull Moors | Free |
| 2025-09-01 | Harry Leonard | Blackburn | Peterborough | Free |
| 2025-09-01 | Thomas O'Connor | Wrexham | Peterborough | Loan |
| 2025-09-01 | Jimmy-Jay Morgan | Chelsea U21 | Peterborough | Loan |
| 2025-09-01 | Jacob Mendy | Wrexham | Peterborough | Loan |
| 2025-09-01 | B. Ihionvien | Peterborough | Shrewsbury Town | Loan |