Ostia Mare Lidocalcio (Serie C: Girone B): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-05 | Filippo D'Andrea | Pineto | Ostia Mare Lidocalcio | Loan |
| 2026-07-31 | Vittorio Parigini | Sambenedettese | Ostia Mare Lidocalcio | Free |
| 2026-07-31 | Riccardo Tonin | Delfino Pescara 1936 | Ostia Mare Lidocalcio | Free |
| 2026-07-22 | Flavio Ferrari | Bologna U19 | Ostia Mare Lidocalcio | Loan |
| 2026-07-21 | Alessandro Morlupo | Ternana | Ostia Mare Lidocalcio | Free |
| 2026-07-20 | Filippo Carbone | Genoa U19 | Ostia Mare Lidocalcio | Loan |
| 2026-07-17 | Player | Ostia Mare Lidocalcio | Ancona | Free |
| 2026-07-16 | Ismaila Badje | Guidonia Montecelio | Ostia Mare Lidocalcio | Free |
| 2026-07-15 | Player | Ostia Mare Lidocalcio | Nocerina | Free |
| 2026-07-14 | Riccardo Brosco | Foggia | Ostia Mare Lidocalcio | Free |
| 2026-07-07 | Player | Ostia Mare Lidocalcio | Sarnese | Free |
| 2026-01-08 | Player | Calcio Desenzano | Ostia Mare Lidocalcio | Free |
| 2025-11-29 | Godfred Donsah | Chieti | Ostia Mare Lidocalcio | Free |
| 2025-08-01 | Ismaila Badje | Guidonia Montecelio | Ostia Mare Lidocalcio | Loan |
| 2025-08-01 | Player | Ostia Mare Lidocalcio | Sarrabus Ogliastra | Free |
| 2025-07-30 | Player | Cavese | Ostia Mare Lidocalcio | Free |
| 2025-07-26 | Samuele Vianni | Virtus Entella | Ostia Mare Lidocalcio | Free |
| 2025-07-18 | Pietro Giordani | Guidonia Montecelio | Ostia Mare Lidocalcio | Free |
| 2025-07-18 | Davide Buono | Guidonia Montecelio | Ostia Mare Lidocalcio | Free |
| 2025-07-17 | Danilo Piroli | Guidonia Montecelio | Ostia Mare Lidocalcio | Free |