Kocaelispor Yth: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2019-07-01 | Furkan Gedik | Kocaelispor Yth | Kocaelispor U19 | — |
| 2017-07-01 | Gökdeniz Bayrakdar | Kocaelispor Yth | Kocaelispor | — |
| 2017-07-01 | Doğukan Kaya | Kocaelispor Yth | Kocaeli U19 | — |
| 2017-02-10 | Furkan Gedik | Karabükspor Yth | Kocaelispor Yth | Free |
| 2016-10-14 | Doğukan Kaya | Besiktas U17 | Kocaelispor Yth | Free |