Updates

** Shares of Inovio Pharmaceuticals INO.O down 14% at $1.48 premarket

** Stock slides after co, late on Tuesday, announced plans for an underwritten public offering of common stock and warrants

** Co says it plans to offer shares along with Series A and Series B warrants, or pre-funded warrants

** Separately, co says it has suspended its at‑the‑market (ATM) stock sale program with Oppenheimer unless it files a new prospectus

** Adds suspension of the ATM removes current sales but does not prevent a new offering

** Inovio says it sold about 1.3 mln shares under the ATM program, raising roughly $3.2 mln before fees

** As of last close, shares flat YTD