Boluspor: every transfer in and out, fees paid and earned, squad market value, €200k spent and €1.3m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-11 | Jose Martin Hosue Diaz Lopez | Libertad | Boluspor | Free |
| 2026-08-08 | Y. Esendemir | Bandırmaspor | Boluspor | Free |
| 2026-08-08 | Muhammed Mert | Istanbulspor | Boluspor | Free |
| 2026-08-05 | Kevin Cuesta | Once Caldas | Boluspor | Free |
| 2026-08-04 | Angelo Tafa | Tirana | Boluspor | Free |
| 2026-08-04 | Juan Argüello | Real Tomayapo | Boluspor | Free |
| 2026-08-04 | Elvin Yunuszade | Karvan | Boluspor | Free |
| 2026-08-04 | M. Dursun | Bursaspor | Boluspor | Loan |
| 2026-08-04 | Furkan Emin Kaçmaz | Altınordu | Boluspor | Free |
| 2026-08-04 | Erdem Dikbasan | Boluspor | Beyoğlu Yeni Çarşı | Free |
| 2026-07-29 | Harun Alpsoy | Boluspor | Serik Belediyespor | Free |
| 2026-07-06 | Dogan Can Davas | Boluspor | Sarıyer SK | Free |
| 2026-07-06 | Loic Kouagba | Boluspor | Igdir FK | Free |
| 2026-07-02 | Turker Dirdiroglu | Boluspor | 1461 Trabzon FK | Free |
| 2026-07-01 | Kaan Arslan | Boluspor | Sarıyer SK | Free |
| 2026-07-01 | Barış Alıcı | Boluspor | Sarıyer SK | Free |
| 2026-07-01 | Dean Lico | Boluspor | Bandırmaspor | Free |
| 2026-07-01 | Alexandru Băluță | Boluspor | Chindia | Free |
| 2026-07-01 | Mário Balbúrdia | Boluspor | Petro de Luanda | Free |
| 2026-07-01 | Mert Çetin | Boluspor | 24 Erzincanspor | Free |