Arena Pharmaceuticals, Inc. Listed on Nasdaq National Market System Following Initial Public OfferingJuly 28, 2000--Arena Pharmaceuticals, Inc. (Nasdaq:ARNA - news) was admitted to the Nasdaq National Market System following its initial public offering of 6 million shares at $18 per share. The company's stock trades under the ticker symbol ARNA. Company address: 6166 Nancy Ridge Drive, San Diego, CA, 92121. Telephone: (858) 453-7200.