Southend United (Enterprise National League): every transfer in and out, fees paid and earned, squad market value and €935k earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-03 | Kyle McAdam | Nottingham Forest U21 | Southend United | Free |
| 2026-07-31 | Rico Richards | Port Vale | Southend United | Free |
| 2026-07-22 | T. Backwell | Cheltenham Town | Southend United | Free |
| 2026-07-01 | Anthony Hartigan | Barnet | Southend United | Free |
| 2026-07-01 | Darren Oldaker | Swindon Town | Southend United | Free |
| 2026-03-10 | Noah Mawene | Preston | Southend United | Loan |
| 2026-01-20 | O. Mason | Mansfield Town | Southend United | Loan |
| 2025-08-08 | Andrew Dallas | Barnsley | Southend United | Loan |
| 2025-07-08 | Ben Goodliffe | Colchester United | Southend United | Free |
| 2025-07-02 | Harry Boyes | Sheffield United U21 | Southend United | Free |
| 2025-07-01 | Sam Austin | Notts County | Southend United | Free |
| 2025-07-01 | Slavi Spasov | Slough Town | Southend United | Free |
| 2025-07-01 | Danny Waldron | Southend United | Brackley Town | Free |
| 2025-07-01 | Jack Wood | Southend United | Walton & Hersham | Free |
| 2025-06-01 | Nathan Harness | Milton Keynes Dons | Southend United | Loan |
| 2025-03-13 | Danny Waldron | Southend United | Tamworth | Loan |
| 2025-02-05 | Nicholas Hayes | Barnet | Southend United | Free |
| 2025-01-30 | Jack Wood | Southend United | Tonbridge Angels | Loan |
| 2025-01-29 | Leon Chambers-Parillon | Slough Town | Southend United | Free |
| 2025-01-28 | Tom Hopper | Colchester United | Southend United | Free |