Guidonia Montecelio (Serie C): every transfer in and out, fees paid and earned, squad market value, €195k spent.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-22 | Diego Zuppel | Guidonia Montecelio | Novara | Loan |
| 2026-08-18 | Franco Ferrari | US Salernitana 1919 | Guidonia Montecelio | Free |
| 2026-08-11 | Alessandro Murgia | FC Universitatea Cluj | Guidonia Montecelio | Free |
| 2026-07-28 | Giacomo Drago | Südtirol | Guidonia Montecelio | Free |
| 2026-07-28 | Simone Franchini | Guidonia Montecelio | Reggina | Free |
| 2026-07-27 | Diego Borghini | Benevento Calcio | Guidonia Montecelio | Free |
| 2026-07-17 | Eetu Vertainen | Triestina | Guidonia Montecelio | Free |
| 2026-07-16 | Ismaila Badje | Guidonia Montecelio | Ostia Mare Lidocalcio | Free |
| 2026-07-15 | Player | Guidonia Montecelio | Trastevere | Loan |
| 2026-07-10 | Enrico Celeghin | Trapani 1905 | Guidonia Montecelio | Free |
| 2026-07-10 | Andrea Cristini | Guidonia Montecelio | Turris | Free |
| 2026-07-09 | Pasquale Giannotti | Trento | Guidonia Montecelio | Free |
| 2026-07-05 | Davide Vitturini | Guidonia Montecelio | Luparense | Free |
| 2026-07-02 | Christian D'Urso | Triestina | Guidonia Montecelio | Free |
| 2026-07-01 | Mattia Tonetto | Triestina | Guidonia Montecelio | Free |
| 2026-07-01 | Riccardo Baroni | UC AlbinoLeffe | Guidonia Montecelio | Free |
| 2026-01-23 | Player | Guidonia Montecelio | Gavorrano | Free |
| 2026-01-15 | Michele Avella | Palermo FC | Guidonia Montecelio | Free |
| 2026-01-14 | Diego Zuppel | Trapani 1905 | Guidonia Montecelio | Free |
| 2026-01-13 | Player | Guidonia Montecelio | Taranto | Loan |