Siena FC (Serie A): every transfer in and out, fees paid and earned, squad market value, €5m spent and €14m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2023-01-06 | Andrei Motoc | Salernitana | Siena | Loan |
| 2022-01-31 | Matthew Guillaumier | Hamrun Spart. | Siena | Loan |
| 2022-01-29 | Daniel Dumbravanu | Genoa | Siena | Loan |
| 2019-07-10 | Mattia Aramu | Robur Siena | Venezia | Free |
| 2018-08-31 | Mattia Aramu | Torino | Robur Siena | — |
| 2018-08-22 | Nikita Contini | Napoli | Robur Siena | Loan |
| 2018-01-31 | Alberto Dossena | Atalanta | Robur Siena | Loan |
| 2017-01-31 | Lamin Jawo | Carpi | Robur Siena | Loan |
| 2017-01-24 | Patrick Ciurria | Spezia Calcio | Robur Siena | Loan |
| 2016-07-28 | Dario Saric | Carpi | Robur Siena | Loan |
| 2015-07-20 | Simone Bastoni | Spezia Calcio | Robur Siena | Loan |
| 2015-07-14 | Lorenzo Montipò | Novara | Robur Siena | Loan |
| 2013-09-02 | Gianluca Pegolo | AC Siena | Sassuolo | €500k |
| 2013-07-01 | Leonardo Spinazzola | Juventus | AC Siena | Loan |
| 2013-07-01 | Eugenio Lamanna | Genoa | AC Siena | Loan |
| 2013-02-01 | Luís Neto | AC Siena | Zenit S-Pb | €6.5m |
| 2013-01-23 | Salvador Agra | Real Betis | AC Siena | Loan |
| 2012-08-05 | Luís Neto | Nacional | AC Siena | €3.6m |
| 2012-07-19 | Mattia Destro | AC Siena | Genoa | €7m |
| 2012-07-01 | Mattia Destro | Genoa | AC Siena | €1.3m |