Piast Gliwice (Pko BP Ekstraklasa): every transfer in and out, fees paid and earned, squad market value, €1.7m spent and €6.3m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-28 | Adrián Dalmau | Piast Gliwice | PSIM Yogyakarta | Free |
| 2026-07-25 | Dominik Holec | Piast Gliwice | Garudayaksa FC | Free |
| 2026-07-01 | Tomasz Mokwa | Piast Gliwice | Without Club | — |
| 2026-07-01 | Patryk Dziczek | Piast Gliwice | Pogon Szczecin | Free |
| 2026-07-01 | Michał Chrapek | Piast Gliwice | Ruch Chorzow | Free |
| 2026-07-01 | Karol Szymański | Piast Gliwice | Without Club | — |
| 2026-07-01 | Grzegorz Tomasiewicz | Piast Gliwice | Slask Wroclaw | Free |
| 2026-03-26 | Dominik Holec | Banik Ostrava | Piast Gliwice | Free |
| 2026-02-10 | Ivan Lima | Benfica B | Piast Gliwice | — |
| 2026-02-02 | Oliwier Maziarz | Piast Gliwice II | Piast Gliwice | — |
| 2026-02-02 | Jakub Grelich | Piast Gliwice II | Piast Gliwice | — |
| 2026-01-27 | Elton Fikaj | Panathinaikos | Piast Gliwice | Free |
| 2026-01-26 | Erik Jirka | Piast Gliwice | GKS Katowice | €400k |
| 2026-01-12 | Levis Pitan | Piast Gliwice | Ross County | Loan |
| 2025-08-27 | Jason Lokilo | CSKA Sofia | Piast Gliwice | Free |
| 2025-08-13 | Hugo Vallejo | SD Huesca | Piast Gliwice | Free |
| 2025-07-24 | Miguel Muñoz | Piast Gliwice | FC Botosani | Free |
| 2025-07-20 | Juande Rivas | CD Tenerife | Piast Gliwice | — |
| 2025-07-18 | Leandro Sanca | Chaves | Piast Gliwice | Free |
| 2025-07-17 | German Barkovskiy | P. Niepolomice | Piast Gliwice | Loan |