Transfer-History
| Termin | Name | Pos | St. | Alter | | kam von | | ging zu | Ablöse |
|---|
| 20.10.2025 | Shaqiri, Xherdan | ZOMRFSTZM | 78 | 33 |  | FC St. Pauli |  | 1. FC Union Berlin | 385.875 € |
| 30.05.2025 | Wörl, Marius | ZMLFZOM | 67 | 20 | | 1. FC Union Berlin |  | Hannover 96 | 500.000 € |
| 14.11.2024 | Nyland, Ørjan | TW | 76 | 34 | | 1. FC Union Berlin |  | Projektleitung | 1 € |
| 22.10.2024 | Rakitic, Ivan | - | 80 | 36 | | 1. FC Union Berlin |  | SC Freiburg | 20.101 € |
| 22.10.2024 | Casteels, Koen | TW | 82 | 32 | | 1. FC Union Berlin |  | VfL Osnabrück | 105.001 € |
| 22.10.2024 | Endo, Wataru | ZDMZM | 80 | 31 | | 1. FC Union Berlin |  | Borussia Mönchengladbach | 101 € |
| 22.10.2024 | Haller, Sebastien | ST | 79 | 30 | | 1. FC Union Berlin | | Borussia Mönchengladbach | 101 € |
| 22.10.2024 | Volland, Kevin | ZOMSTZM | 76 | 32 | | 1. FC Union Berlin | | Projektleitung | 1 € |
| 22.10.2024 | Witsel, Axel | IVZDMZM | 80 | 35 | | 1. FC Union Berlin | | Borussia Mönchengladbach | 8.102 € |
| 21.06.2024 | Kramaric, Andrej | ZOMZM | 81 | 27 | | 1. FC Union Berlin | | FC St. Pauli | 10.500 € |
| 11.06.2024 | Stolze, Sebastian | RMRVLM | 67 | 23 |  | SG Dynamo Dresden | | 1. FC Union Berlin | 1 € |
| 09.06.2024 | Martinovic, Dominik | STZOM | 66 | 21 |  | Eintracht Braunschweig | | 1. FC Union Berlin | 1 € |
| 08.05.2024 | Grifo, Vincenzo | LMLF | 81 | 25 | | 1. FC Union Berlin |  | SSV Jahn Regensburg | 1.021.026 € |
| 08.05.2024 | Yildirim, Aygün | - | 64 | 23 |  | SV Elversberg | | 1. FC Union Berlin | 1 € |
| 03.05.2024 | Sarenren Bazee, Noah | RFLFRM | 70 | 22 | | SG Dynamo Dresden | | 1. FC Union Berlin | 180.000 € |
| 24.04.2024 | Rodríguez, Ricardo | LVLM | 76 | 26 | | 1. FC Union Berlin |  | FC Ingolstadt 04 | 315.000 € |
| 22.04.2024 | Toprak, Ömer | - | 72 | 29 | | SV Elversberg | | 1. FC Union Berlin | 101 € |
| 16.04.2024 | Poulsen, Yussuf | ST | 77 | 24 | | 1. FC Union Berlin | | FC St. Pauli | 716.625 € |
| 16.04.2024 | Firmino, Roberto | - | 80 | 27 | | 1. FC Union Berlin |  | Hamburger SV | 101 € |
| 10.04.2024 | Donkor, Anton | LVLM | 67 | 21 | | 1. FC Union Berlin | | Eintracht Braunschweig | 992.253 € |
| 09.04.2024 | Rode, Sebastian | - | 76 | 28 |  | SSV Ulm 1846 | | 1. FC Union Berlin | 157.500 € |
| 02.04.2024 | Kramaric, Andrej | ZOMZM | 81 | 27 | | SSV Jahn Regensburg | | 1. FC Union Berlin | 405.171 € |
| 02.04.2024 | Casteels, Koen | TW | 83 | 26 | | SSV Jahn Regensburg | | 1. FC Union Berlin | 101 € |
| 01.04.2024 | Reus, Marco | ZOMZM | 83 | 29 | | 1. FC Union Berlin |  | 1. FSV Mainz 05 | 1.200.000 € |
| 07.01.2024 | Witsel, Axel | IVZDMZM | 79 | 29 | | 1. FSV Mainz 05 | | 1. FC Union Berlin | 101 € |