Arminia Bielefeld（Bundesliga）：每一笔引进与离队、支出与收入的转会费，以及阵容的市场价值。 支出 €16m，收入 €15m。
| 日期 | 球员 | 来自 | 去往 | 费用 |
|---|---|---|---|---|
| 2026-08-30 | David Min | FC Utrecht | Arminia Bielefeld | 租借 |
| 2026-07-30 | Julian Kania | Arminia Bielefeld | De Graafschap Doetinchem | 免费 |
| 2026-07-16 | Christopher Lannert | Arminia Bielefeld | SV Darmstadt 98 | 免费 |
| 2026-07-01 | Jannik Rochelt | Hannover 96 | Arminia Bielefeld | €400k |
| 2026-07-01 | Henri Koudossou | FC Augsburg | Arminia Bielefeld | €500k |
| 2026-07-01 | Mika Schroers | Arminia Bielefeld | Alemannia Aachen | €150k |
| 2026-07-01 | Noah Joel Sarenren Bazee | Arminia Bielefeld | Waldhof Mannheim | 免费 |
| 2026-07-01 | Justin Lukas | Arminia Bielefeld | FC Gütersloh | 免费 |
| 2026-07-01 | Mael Corboz | Arminia Bielefeld | Grenoble | 免费 |
| 2026-07-01 | Max Lippert | Arminia Bielefeld | Köln II | 免费 |
| 2026-01-30 | Robin Knoche | 1. FC Nürnberg | Arminia Bielefeld | 免费 |
| 2026-01-27 | Vincent Ocansey | Arminia Bielefeld | Erzgebirge Aue | 租借 |
| 2026-01-20 | Fabian Kunze | Arminia Bielefeld | Hansa Rostock | 租借 |
| 2026-01-04 | Maximilian Bauer | Augsburg | Arm. Bielefeld | 租借 |
| 2026-01-03 | Jannik Rochelt | Hannover 96 | Arminia Bielefeld | 租借 |
| 2026-01-02 | Semir Telalovic | 1. FC Nürnberg | Arminia Bielefeld | 租借 |
| 2026-01-01 | Julian Kania | Arminia Bielefeld | VfL Osnabrück | 租借 |
| 2025-09-01 | Monju Momuluh | Hannover 96 | Arminia Bielefeld | €400k |
| 2025-08-29 | Arne Sicker | SV Elversberg | Arminia Bielefeld | 免费 |
| 2025-08-27 | Mika Schroers | Arminia Bielefeld | Alemannia Aachen | 租借 |