EFF B.V. acquired 40.5% stake in 4Mobility S.A. (WSE:4MB) from Black River DWC-LLC on November 28, 2018. As the result of the transaction, Black River DWC-LLC disposed its entire stake in 4Mobility S.A. EFF B.V. completed the acquisition of 40.5% stake in 4Mobility S.A. (WSE:4MB) from Black River DWC-LLC on November 28, 2018.