| 16.12.2015 | Dausch, Martin | TW | 64 | 29 |  | 1. FC Union Berlin |  | 1. FC Heidenheim | 100.000 € |
| 08.12.2015 | Flum, Johannes | - | 79 | 28 |  | VfL Wolfsburg | | 1. FC Union Berlin | 1.000.000 € |
| 03.12.2015 | Ihm, Christopher | TW | 76 | 33 | | 1. FC Union Berlin |  | SpVgg Greuther Fürth | 405.168 € |
| 01.12.2015 | Henrique, Henrique Adriano | TW | 80 | 29 |  | VfB Stuttgart | | 1. FC Union Berlin | 636.300 € |
| 01.12.2015 | Quiring, Christopher | TW | 68 | 25 | | 1. FC Union Berlin |  | SV Babelsberg 03 | 805.000 € |
| 24.11.2015 | Schulz, Kai-Fabian | TW | 72 | 25 | | 1. FC Union Berlin |  | FC St. Pauli | 945.000 € |
| 24.11.2015 | Raffael, Raffael De Araujo | - | 80 | 30 | | VfB Stuttgart | | 1. FC Union Berlin | 1.110.001 € |
| 24.11.2015 | Kopplin, Björn | TW | 70 | 26 | | 1. FC Union Berlin |  | SSV Jahn Regensburg | 420.000 € |
| 24.11.2015 | Perisic, Ivan | LFRFLM | 77 | 26 |  | Alemannia Aachen | | 1. FC Union Berlin | 1.110.001 € |
| 24.11.2015 | Ochs, Patrick | TW | 77 | 31 | | Alemannia Aachen | | 1. FC Union Berlin | 454.321 € |
| 24.11.2015 | Frerking, Lars | TW | 56 | 26 |  | 1. FC Eschborn | | 1. FC Union Berlin | 75.000 € |
| 16.11.2015 | de Jong, Nigel | TW | 73 | 31 | | 1. FC Union Berlin |  | SV Sandhausen | 197.990 € |
| 16.11.2015 | Lemke, Dennis | TW | 58 | 26 |  | Eintracht Braunschweig | | 1. FC Union Berlin | 89.001 € |
| 16.11.2015 | Schönheim, Fabian | TW | 76 | 28 | | 1. FC Union Berlin |  | SV Meppen | 517.107 € |
| 16.11.2015 | Stegmayer, Michael | TW | 62 | 30 |  | Rot Weiss Ahlen | | 1. FC Union Berlin | 78.000 € |
| 04.05.2015 | Rosenthal, Jan | TW | 73 | 28 | | 1. FC Union Berlin | | VfB Stuttgart | 250.000 € |
| 26.04.2015 | Hinkel, Andreas | TW | 79 | 32 |  | FC Bayern München | | 1. FC Union Berlin | 201 € |
| 14.04.2015 | Quiring, Christopher | TW | 67 | 24 |  | Hertha BSC | | 1. FC Union Berlin | 351.966 € |
| 13.04.2015 | Benyamina, Karim | TW | 75 | 33 | | 1. FC Union Berlin |  | Projektleitung | 1 € |
| 07.04.2015 | Fink, Oliver | TW | 63 | 32 | | 1. FC Union Berlin | | VfL Wolfsburg | 5.000 € |
| 07.04.2015 | Reinard, Julian | TW | 72 | 31 | | 1. FC Union Berlin | | Projektleitung | 1 € |
| 29.03.2015 | Lavric, Klemen | TW | 76 | 33 | | Rot Weiss Ahlen | | 1. FC Union Berlin | 950.000 € |
| 29.03.2015 | Centurion, Emanuel | TW | 73 | 32 | | 1. FC Union Berlin | | 1. FC Eschborn | 75.000 € |
| 28.03.2015 | Haggui, Karim | TW | 73 | 30 | | 1. FC Union Berlin |  | Kickers Offenbach | 303.878 € |
| 24.03.2015 | Abuda, Adailton | TW | 78 | 28 | | 1. FC Union Berlin |  | 1. FC Schweinfurt 05 | 30.000 € |