St. Gallen Yth.: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2023-07-01 | Nino Weibel | St. Gallen Yth. | St. Gallen U17 | — |
| 2022-07-01 | Corsin Konietzke | St. Gallen Yth. | St. Gallen U18 | — |
| 2019-07-01 | Bela Dumrath | St. Gallen Yth. | SO-Schweiz U18 | Free |
| 2018-07-01 | Leonidas Stergiou | St. Gallen Yth. | St. Gallen U21 | — |
| 2016-07-01 | Nias Hefti | St. Gallen Yth. | St. Gallen U18 | — |
| 2016-07-01 | Betim Fazliji | St. Gallen Yth. | St. Gallen U18 | — |
| 2015-07-01 | Leonidas Stergiou | FC Wil Yth. | St. Gallen Yth. | Free |
| 2014-07-01 | Silvan Hefti | St. Gallen Yth. | St. Gallen U18 | — |
| 2014-07-01 | Jasper van der Werff | St. Gallen Yth. | St. Gallen U18 | — |