BUZZ-Sera Prognostics tumbles on $50 mln stock offering

Sera Prognostics Inc's SERA.O shares down 15.3% premarket to $3.77, over 1-yr low, after overnight follow-on priced

Salt Lake City-based women's health firm late Mon announced 12.5 mln shares, including 11.25 mln pre-funded warrants, at $4 for $50 mln gross proceeds

Offering price is 10.1% discount to last sale

Co intends to use net offering proceeds to expand commercial infrastructure in the U.S., accelerate preparations for expansion in the European Union, fund additional studies to increase adoption of its blood test to predict preterm birth risks, PreTRM, including a potential submission to U.S. FDA for broad approval

Jefferies, TD Cowen and William Blair are jt bookrunners, along with RBC

Co has ~33.77 mln shares outstanding for market cap of ~$150 mln and ~28.6 mln shares of free float, per LSEG

SERA shares, which have fallen 6 of the past 7 sessions, have declined 45% YTD through Mon close