0001181431-09-026049 4 1 20090518 20090520 20090520 Iversen Leslie L 0001291623 4 34 000-50768 09842696 C/O UNIVERSITY OF OXFORD MANSFIELD ROAD OXFORD X0 OX1 3QT ACADIA PHARMACEUTICALS INC 0001070494 2834 061376651 DE 1231 3911 SORRENTO VALLEY BLVD SAN DIEGO CA 92121 858-558-2871 3911 SORRENTO VALLEY BLVD SAN DIEGO CA 92121 4 1 rrd243213.xml FORM 4 -- SHARE PURCHASE