Septemvri Sofia: every transfer in and out, fees paid and earned, squad market value, €90k spent and €1.8m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-04 | Valon Hamdiu | Septemvri Sofia | Rapperswil-Jona | Free |
| 2026-07-27 | Bertrand Fourrier | Septemvri Sofia | Ural Yekaterinburg | €250k |
| 2026-07-08 | André Liberal | FC Paços de Ferreira | Septemvri Sofia | Free |
| 2026-07-06 | Mateo Stamatov | Septemvri Sofia | Torpedo Kutaisi | Free |
| 2026-07-01 | Bozhidar Penchev | Botev Vratsa | Septemvri Sofia | Free |
| 2026-07-01 | Yanko Georgiev | Septemvri Sofia | Arda Kardzhali | Free |
| 2026-07-01 | Borislav Marinov | Septemvri Sofia | Vihren | Free |
| 2026-07-01 | Krasian Kolev | Septemvri Sofia | Chernomorets 1919 Burgas | Free |
| 2026-02-12 | Zahari Atanasov | Septemvri Sofia | Lokomotiv G. Oryahovitsa | Loan |
| 2026-02-10 | Victor Ayi Ochayi | Septemvri Sofia | Ashdod | Free |
| 2026-02-06 | Kléri Serber | Septemvri Sofia | Hamrun Spartans | Free |
| 2026-01-29 | Vladimir Ivanov | Septemvri Sofia | Belasitsa | Loan |
| 2026-01-23 | Dominik Ivkic | FC Koper | Septemvri Sofia | Free |
| 2026-01-17 | Stefan Stojanovic | FK Spartak Subotica | Septemvri Sofia | Loan |
| 2026-01-07 | Moises Parra | Septemvri Sofia | Antequera | Free |
| 2025-09-05 | Simeon Vasilev | CSKA 1948 Sofia | Septemvri Sofia | Loan |
| 2025-09-01 | Borislav Marinov | Septemvri Sofia | Dunav | Loan |
| 2025-08-22 | Nicolas Paul Julien Fontaine | Zulte-Waregem II W | Septemvri Sofia | €90k |
| 2025-08-21 | Faiz Mattoir | Almere City | Septemvri Sofia | Free |
| 2025-08-17 | Valentin Nikolov | Septemvri Sofia | Makedonikos | Free |