B. Dortmund U19: every transfer in and out, fees paid and earned, squad market value and €5.9m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-03-20 | Luca Reggiani | B. Dortmund U19 | Dortmund | — |
| 2026-01-01 | Samuele Inácio | B. Dortmund U19 | B. Dortmund II | — |
| 2026-01-01 | Mathis Albert | B. Dortmund U19 | B. Dortmund II | — |
| 2026-01-01 | Elias Benkara | B. Dortmund U19 | B. Dortmund II | — |
| 2025-07-01 | Tyler Meiser | B. Dortmund U19 | B. Dortmund II | — |
| 2025-07-01 | Robin Lisewski | B. Dortmund U19 | 1.FC Nuremberg | Free |
| 2025-07-01 | Enzo Duarte | B. Dortmund U17 | B. Dortmund U19 | — |
| 2025-01-01 | Mathis Albert | B. Dortmund U17 | B. Dortmund U19 | — |
| 2024-08-16 | Paris Brunner | B. Dortmund U19 | Monaco | €4m |
| 2024-08-07 | Almugera Kabar | B. Dortmund U19 | Dortmund | — |
| 2024-07-09 | Cole Campbell | B. Dortmund U19 | Dortmund | — |
| 2024-07-01 | Samuele Inácio | Atalanta U17 | B. Dortmund U19 | — |
| 2024-07-01 | Luca Reggiani | B. Dortmund U17 | B. Dortmund U19 | — |
| 2024-07-01 | Kjell Wätjen | B. Dortmund U19 | Dortmund | — |
| 2024-07-01 | Filippo Mane | B. Dortmund U19 | B. Dortmund II | — |
| 2024-07-01 | Charles Herrmann | B. Dortmund U19 | Mönchengladbach | Free |
| 2024-02-01 | Julian Rijkhoff | B. Dortmund U19 | Ajax U21 | €1.4m |
| 2024-01-01 | Tyler Meiser | B. Dortmund U17 | B. Dortmund U19 | — |
| 2024-01-01 | Elias Benkara | B. Dortmund U17 | B. Dortmund U19 | — |
| 2023-09-01 | Gökdeniz Gürpüz | B. Dortmund U19 | Galatasaray U19 | €220k |