German venture firms Sementis Copia I and Erfurt und MicroVenture Lucrum 1 have sold their combined stake in Qsil, a German manufacturer of fused quartz, in a secondary buyout to Ventizz Capital. No financial or return details were disclosed.
QSil was founded in 1992, a spinout from Ilmenauer Glaswerke. It produces fused quartz for the semi-conductor and fibre-optic cable industry. MicroVenture and Sementis Copia invested in the company in 2001.
Ventizz’s investment was made through Ventizz Capital Fund III LP.