Athletico U20: every transfer in and out, fees paid and earned, squad market value, €1.2m spent and €600k earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-01 | Chiqueti | Athletico U20 | Athletico-PR | — |
| 2026-01-01 | Bruninho | Athletico U20 | Athletico-PR | — |
| 2026-01-01 | Arthur Dias | Athletico U20 | Athletico-PR | — |
| 2025-06-01 | Dudu | Athletico U20 | Athletico-PR | — |
| 2025-05-16 | Kauã Moraes | Athletico U20 | Athletico-PR | — |
| 2025-02-27 | Giovany Herbert | Árabe Unido | Athletico U20 | Loan |
| 2025-01-14 | Léo Derik | Athletico U20 | Athletico-PR | — |
| 2025-01-01 | Kauã Moraes | Palmeiras U20 | Athletico U20 | — |
| 2024-06-10 | Arthur Dias | Athletico U17 | Athletico U20 | — |
| 2024-04-01 | João Cruz | Athletico U20 | Athletico-PR | — |
| 2024-04-01 | Emersonn | Athletico U20 | Athletico-PR | — |
| 2024-03-07 | Fernando Nava | Athletico U20 | Santos U20 | Free |
| 2024-01-31 | João Pedro | Athletico U20 | Charlotte | €600k |
| 2024-01-01 | Renan Viana | Athletico U20 | Athletico-PR | — |
| 2024-01-01 | Julimar | Athletico U20 | Athletico-PR | — |
| 2024-01-01 | João Vialle | Athletico U20 | Ituano | Free |
| 2024-01-01 | João Cruz | Athletico U17 | Athletico U20 | — |
| 2023-07-20 | Julimar | Athletico U20 | Mirassol-SP | Loan |
| 2023-07-01 | Dudu | Athletico U17 | Athletico U20 | — |
| 2023-03-28 | João Vialle | Athletico U20 | Pouso Alegre | Loan |