02 May2026 | Grazer AK | Csikszereda M. Ciuc | ||
02 Apr2025 | Panathinaikos | Grazer AK | Free agent | |
| - | Hajduk Split | Panathinaikos | Return from loan | |
| - | Panathinaikos | Hajduk Split | Loan | |
01 Dec2023 | Osijek | Panathinaikos | Transfer | |
| - | FC Astana | Osijek | Free agent | |
07 Jan2018 | Werder Bremen | FC Astana | Transfer | |
07 Jan2018 | FC Astana | Werder Bremen | Return from loan | |
07 Jan2017 | Werder Bremen | FC Astana | Loan | |
| - | Ferencvaros | Werder Bremen | Return from loan | |
02 Jul2017 | Werder Bremen | Ferencvaros | Loan | |
| - | Darmstadt | Werder Bremen | Return from loan | |
| - | Werder Bremen | Darmstadt | Loan | |
| - | Videoton | Werder Bremen | Transfer | |
| - | Puskas Academy | Videoton | Return from loan | |
| - | Videoton | Puskas Academy | Loan | |
| - | Puskas Academy | Videoton | Return from loan | |
| - | Videoton | Puskas Academy | Loan | |
08 Sept2012 | Puskas Academy | Videoton | Free agent | |
| - | Videoton | Puskas Academy | Return from loan | |
| - | Puskas Academy | Videoton | Loan |
L. Kleinheisler transfer history tracks all club moves during the professional career, including transfer dates and teams involved.