Pfenex Closes IPO

San Diego-based biotechnology company Pfenex said Tuesday that it has closed its initial public offering, where the company sold 8,333,333 shares of its stock at $6.00 per share. The company is now trading on the NYSE as PFNX. Pfenex closed down at $5.62 on Tuesday. The IPO was run by William Blair & Company, L.L.C. and JMP Securities LLC, along with Mizuho Securities USA Inc. Pfenex is a spinout of Dow Chemical, and is aiming its lead product at potential treatment of patients with retinal diseases.