FC Koper (): setiap transfer masuk dan keluar, nilai yang dibayar dan diterima, serta nilai pasar skuad. — dikeluarkan, €6.7m diterima.
| Tanggal | Pemain | Dari | Ke | Nilai |
|---|---|---|---|---|
| 2026-08-20 | N. Simon | Sumqayıt | FC Koper | Gratis |
| 2026-07-28 | Felipe Curcio | FC Koper | NK Rudes | Gratis |
| 2026-07-18 | Brian Oddei | FC Koper | Noah | Gratis |
| 2026-07-17 | Leo Stulac | NK Istra 1961 | FC Koper | Gratis |
| 2026-07-08 | Benjamin Adrovic | ND Slovan Ljubljana | FC Koper | Gratis |
| 2026-07-02 | Maj Mittendorfer | FC Koper | Yelimay Semey | Gratis |
| 2026-07-01 | Álvaro Roncal | Rudar Prijedor | FC Koper | Gratis |
| 2026-07-01 | Stefano Surdanovic | Zrinjski | FC Koper | Gratis |
| 2026-07-01 | Filip Backulja | FK Novi Pazar | FC Koper | Gratis |
| 2026-07-01 | Giuseppe Agyemang | Novara | FC Koper | Gratis |
| 2026-07-01 | Bangaly Diawara | Flamurtari | FC Koper | Gratis |
| 2026-07-01 | Metod Jurhar | FC Koper | FC Voluntari | Gratis |
| 2026-07-01 | Mark Pabai | FC Koper | De Graafschap Doetinchem | Gratis |
| 2026-07-01 | Petar Petrisko | FC Koper | NK Aluminij | Gratis |
| 2026-07-01 | Aljaz Zalaznik | FC Koper | NS Mura | Gratis |
| 2026-01-29 | Wisdom Aondowase Sule | FC Koper | HNK Gorica | Pinjaman |
| 2026-01-23 | Dominik Ivkic | FC Koper | Septemvri Sofia | Gratis |
| 2026-01-20 | Michal Kukucka | 1. FC Nürnberg | FC Koper | Pinjaman |
| 2026-01-20 | Sandro Jovanovic | FC Koper | ND Primorje | Pinjaman |
| 2026-01-19 | Brown Irabor | EA Guingamp | FC Koper | Gratis |