EXHIBIT 4.1 STOCK PURCHASE AGREEMENT Neurocrine Biosciences, Inc. 10555 Science Center Drive San Diego, CA 92121 Ladies & Gentlemen: The undersigned, _________________________________(the "Investor"), hereby confirms its agreement with you as follows:...Stock Purchase Agreement • January 20th, 2000 • Neurocrine Biosciences Inc • Biological products, (no disgnostic substances) • California
Contract Type FiledJanuary 20th, 2000 Company Industry Jurisdiction