X0303 4 2010-01-04 0000914475 NEUROCRINE BIOSCIENCES INC NBIX 0001423837 Bozigian Haig P. NEUROCRINE BIOSCIENCES, INC. 12780 EL CAMINO REAL SAN DIEGO CA 92130 0 1 0 0 Sr Vice President, Development Common Stock 2010-01-04 4 S 0 751 2.6402 D 36697 D Sale of 751 shares of common stock issued upon vesting of 1,667 restricted stock units on January 3, 2010 to cover payroll and withholding taxes, with the balance of the shares (916) maintained by the Reporting Person; the sale was affected by a broker pursuant to instructions set forth in a Rule 10b5-1 plan adopted by the Reporting Person and delivered to the broker on May 26, 2009. Margaret E. Valeur-Jensen, By Power of Attorney 2010-01-05