Shoe Station Group (SHOE) shares were down 19% in premarket activity Thursday following the company's Q2 results.

Biohaven (BHVN) stock was down 13% after the company said the US Food and Drug Administration has instructed the company to pause new patient enrollment for its BHV-7000 studies as of Sept. 4.

Navan (NAVN) shares were 14% lower following the company's fiscal Q2 results and acquisition of events platform BoomPop.

Cooper (COO) stock was 14% lower after multiple analyst price target cuts.

Ribbon Acquisition (RIBB) shares were down 19%, partially reversing the 25% rise from the prior close.