HJK U19: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2022-01-01 | Jaaso Jantunen | HJK U19 | HJK Klubi 04 | — |
| 2021-01-01 | Rony Jansson | HJK U20 | HJK Klubi 04 | — |
| 2020-07-01 | Jimi Tauriainen | HJK U19 | Chelsea U18 | — |
| 2020-01-01 | Casper Terho | HJK U20 | HJK Klubi 04 | — |
| 2019-01-01 | Matti Peltola | HJK U20 | HJK Klubi 04 | — |
| 2019-01-01 | Leo Walta | HJK U20 | HJK Klubi 04 | — |
| 2018-01-01 | Santeri Väänänen | HJK U20 | HJK Klubi 04 | — |
| 2017-01-16 | Tommi Jyry | HJK U20 | Helsinki IFK | Free |
| 2016-01-01 | Timo Stavitski | HJK U20 | HJK Klubi 04 | — |
| 2014-01-01 | Carljohan Eriksson | HJK U19 | HJK Helsinki | — |
| 2012-07-01 | Richard Jensen | HJK U19 | FC Twente U19 | — |
| 2012-01-01 | Robin Lod | HJK U19 | HJK Helsinki | — |
| 2012-01-01 | Daniel O'Shaughnessy | HJK U19 | FC Metz U19 | — |