Istanbul U19: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-09-16 | Çınar Arbay | Eyüpspor U19 | Istanbul U19 | Free |
| 2024-07-01 | Emin Yakup Oktay | Istanbul U19 | Without Club | — |
| 2024-04-01 | Emir Mustafa Vuruşaner | Istanbul U19 | Istanbulspor | — |
| 2024-04-01 | Baran Alp Vardar | Istanbul U19 | Istanbulspor | — |
| 2024-02-12 | Eren Arda Şan | Istanbul U19 | Istanbulspor | — |
| 2024-01-30 | Enver Sarıalioğlu | Istanbul U19 | Istanbulspor | — |
| 2023-10-30 | Tunahan Şamdanlı | Istanbul U19 | Istanbulspor | — |
| 2023-10-30 | Bartu Kırtaş | Istanbul U19 | Istanbulspor | — |
| 2023-08-25 | Hasip Korkmazyürek | Istanbul U19 | Sittard U21 | Free |
| 2023-08-24 | Demir Mermerci | Sariyer Yth | Istanbul U19 | Free |
| 2023-08-24 | Baran Alp Vardar | Feriköy Jgd | Istanbul U19 | Free |
| 2023-07-01 | Yasin Polat | Istanbul Yth | Istanbul U19 | — |
| 2023-07-01 | Eren Arda Şan | Istanbul Yth | Istanbul U19 | — |
| 2023-07-01 | Emin Yakup Oktay | Istanbul Yth | Istanbul U19 | — |
| 2023-07-01 | Berkay Tekke | Istanbul U19 | Istanbulspor | — |
| 2022-10-14 | Berkay Tekke | Trabzonspor U19 | Istanbul U19 | Free |
| 2022-10-01 | Hasip Korkmazyürek | H. Rostock U19 | Istanbul U19 | Free |
| 2022-09-06 | Enver Sarıalioğlu | Trabzonspor U19 | Istanbul U19 | Free |
| 2022-08-24 | İbrahim Kaya | Istanbul U19 | 23 Elazig FK | Free |
| 2022-02-16 | Emir Mustafa Vuruşaner | Istanbul Yth | Istanbul U19 | — |