** U.S.-listed shares of Merus NV MRUS.O down 6.5% to $58.34 before the bell after follow-on priced
** Dutch biotech firm early Weds announced ~5.3 mln shares at $57 for $300 mln gross proceeds
** Offering priced at 8.7% discount to stock's last sale
** Co plans to use net offering proceeds to advance clinical development of its product candidates, for preclinical research and technology development, and for working capital among other purposes
** Through Tues close, MRUS shares surged 50% since May 22, when co said its lead candidate petosemtamab in combination with Merck's MRK.N Keytruda delayed progression of a type of head and neck cancer in a mid-stage trial
** Co has ~69.2 mln shares outstanding for $4.3 bln market cap
** Jefferies, BofA, Leerink, Guggenheim, Truist and LifeSci Capital are jt bookrunners for the offering
** All 17 analysts covering MRUS are bullish, including 7 "strong buy" ratings, with $88.50 median PT, latest LSEG data reflects
(Lance Tupper is a Reuters market analyst. The views expressed are his own)
((lance.tupper@tr.com 1-646-279-6380))