Cooley advised Ambrx Biopharma on its $126 million initial public offering of 7,000,000 American depositary shares, each representing seven ordinary shares. Ambrx Biopharma, whose securities now trade on the New York Stock Exchange under the symbol AMAM, is a clinical-stage biopharmaceutical company using an expanded genetic code technology platform to discover and develop engineered precision biologics. Partners Charlie Kim, Patrick Loofbourrow, Sean Clayton and Will Cai led the Cooley team.