weyi-tv, virtual channel 25 (uhf digital channel 18), branded on-air as nbc 25, is an nbc-affiliated television station licensed to saginaw, michigan, united states and serving the flint/tri-cities television market. owned by howard stirk holdings, it is operated under a shared services agreement (ssa) by the sinclair broadcast group, making it a sister station to flint-licensed fox affiliate wsmh (channel 66); sinclair also operates bay city-licensed cw affiliate wbsf (channel 46) under a separate ssa with owner cunningham broadcasting. however, sinclair effectively owns wbsf as the majority of cunningham's stock is owned by the family of deceased group founder julian smith.