| 2026-10-15 | A. Koiki | Northampton → Eastleigh | Free agent |
| 2026-09-28 | T. Eaves | Northampton → Gillingham | Free agent |
| 2026-09-10 | L. Burge | Northampton → Salford City | Free agent |
| 2026-08-31 | S. Chambers | Leeds → Northampton | Loan |
| 2026-08-31 | O. Dale | Oxford United → Northampton | Free agent |
| 2026-08-31 | Joshua Alan Powell | Nottingham Forest → Northampton | Loan |
| 2026-08-30 | O. Dale | Oxford United → Northampton | Free agent |
| 2026-08-20 | N. Opoku | Leicester → Northampton | Transfer |
| 2026-08-19 | N. Opoku | Leicester → Northampton | Transfer |
| 2026-08-16 | J. O'Brien-Whitmarsh | Southampton → Northampton | Transfer |
| 2026-08-15 | J. O'Brien-Whitmarsh | Southampton → Northampton | Transfer |
| 2026-08-13 | M. Jacobs | Northampton → Harborough Town | Free agent |
| 2026-08-06 | D. Campbell | Northampton → Notts County | Transfer |
| 2026-08-06 | L. Evans | Bradford → Northampton | Free agent |
| 2026-08-05 | D. Campbell | Northampton → Notts County | Transfer |
| 2026-08-05 | L. Evans | Bradford → Northampton | Free agent |
| 2026-07-31 | T. Chonya | Northampton → Northampton | - |
| 2026-07-31 | B. Ashton | Northampton → Northampton | - |
| 2026-07-29 | J. Tomlinson | Northampton → Brackley Town | Free agent |
| 2026-07-29 | T. Avery | Northampton → Ilkeston Town | Free agent |
| 2026-07-21 | C. Lemonheigh-Evans | Milton Keynes Dons → Northampton | Free agent |
| 2026-07-20 | Matthew Warhurst | Manchester City → Northampton | Transfer |
| 2026-07-07 | N. Guinness-Walker | Northampton → Aberdeen | Free agent |
| 2026-07-06 | N. Guinness-Walker | Northampton → Aberdeen | Free agent |
| 2026-07-01 | L. Briggs | Leicester → Northampton | Loan |
| 2026-06-30 | C. McGeehan | Northampton → Barnsley | Free agent |
| 2026-06-30 | J. Tomlinson | Northampton → Brackley Town | Free agent |
| 2026-06-30 | George Daldy | Northampton → Northampton | - |
| 2026-06-30 | J. Donacien | Chesterfield → Northampton | Free agent |
| 2026-06-30 | J. Maxwell | Doncaster → Northampton | Free agent |
| 2026-06-30 | Z. Jeacock | Lincoln → Northampton | Loan |
| 2026-06-30 | H. Saunders | Tranmere → Northampton | Free agent |
| 2026-06-29 | T. Eaves | Northampton → Eaves Tom | Free agent |
| 2026-06-29 | T. Eaves | Northampton → Gillingham | Free agent |
| 2026-06-29 | C. McGeehan | Northampton → Barnsley | Free agent |
| 2026-06-29 | J. Willis | Northampton → Willis Jordan | Free agent |
| 2026-06-29 | L. Burge | Northampton → Burge Lee | Free agent |
| 2026-06-29 | L. Burge | Northampton → Salford City | Free agent |
| 2026-06-29 | Matthew Ireland | Northampton → Ireland Matthew | Free agent |
| 2026-06-29 | K. Edwards | Northampton → Edwards Kyle | Free agent |
| 2026-06-29 | J. Vale | Northampton → Vale Jack | Free agent |
| 2026-06-29 | B. Hammond | Northampton → Nottingham Forest | Return from loan |
| 2026-06-29 | Kyle James McAdam | Northampton → Nottingham Forest (U21) | Return from loan |
| 2026-06-29 | Kyle James McAdam | Northampton → Nottingham Forest | Return from loan |
| 2026-06-29 | J. Donacien | Chesterfield → Northampton | Free agent |
| 2026-06-29 | J. Maxwell | Doncaster → Northampton | Free agent |
| 2026-06-29 | C. Lemonheigh-Evans | Milton Keynes Dons → Northampton | Free agent |
| 2026-06-29 | H. Saunders | Tranmere → Northampton | Free agent |
| 2026-06-29 | Archie Murray | Northampton → Murray Archie | Free agent |
| 2026-05-30 | J. Tomlinson | Bedford Town → Northampton | Return from loan |
| 2026-05-30 | T. Taylor | Northampton → Charlton | Return from loan |
| 2026-05-30 | M. Forbes | Northampton → West Ham | Return from loan |
| 2026-05-30 | J. Evans | Northampton → Leicester | Return from loan |
| 2026-04-30 | N. Dobson | St Ives Town → Northampton | Return from loan |
| 2026-02-23 | L. McCarron | Northampton → Boston United | Free agent |
| 2026-02-06 | T. Avery | Corby Town → Northampton | Return from loan |
| 2026-02-05 | J. Tomlinson | Northampton → Bedford Town | Loan |
| 2026-02-01 | B. Hammond | Nottingham Forest → Northampton | Loan |
| 2026-02-01 | Kyle James McAdam | Nottingham Forest (U21) → Northampton | Loan |
| 2026-01-26 | J. Evans | Leicester → Northampton | Loan |
| 2026-01-11 | E. Wheatley | Northampton → Manchester United | Return from loan |
| 2026-01-09 | E. Moore | Oxford United → Northampton | Free agent |
| 2026-01-08 | T. Avery | Northampton → Corby Town | Loan |
| 2026-01-07 | J. Dadge | Spalding United → Northampton | Return from loan |
| 2026-01-04 | J. Thorniley | Northampton → Oxford United | Return from loan |
31J. DadgeTorwart · 21
34R. FitzsimonsTorwart · 31
1Z. JeacockTorwart · 24
42B. AshtonVerteidiger
44J. DonacienVerteidiger · 32
35M. DycheVerteidiger · 22
5J. GuthrieVerteidiger · 33
3J. MaxwellVerteidiger · 24
15C. McCarthyVerteidiger · 27
6E. MooreVerteidiger · 28
22Joshua Alan PowellMittelfeldspieler · 20
16J. WormleightonMittelfeldspieler · 22
20L. BriggsMittelfeldspieler · 20
26S. ChambersMittelfeldspieler · 18
8L. EvansMittelfeldspieler · 31
14T. FornahMittelfeldspieler · 26
24C. Lemonheigh-EvansMittelfeldspieler · 28
10E. ListStürmer · 28
43Mataeo Moon-ArnaezMittelfeldspieler · 17
4J. O'Brien-WhitmarshMittelfeldspieler · 20
41R. OlivetiMittelfeldspieler
21Jack PerkinsMittelfeldspieler · 22
11K. Simon-SwyerStürmer · 23
45T. ChonyaStürmer
19O. DaleMittelfeldspieler · 27
40N. DobsonStürmer · 19
7S. HoskinsStürmer · 32
17N. OpokuStürmer · 24
32H. SaundersStürmer · 28
9Matthew WarhurstStürmer · 19