0001441848-10-000023 4 1 20100421 20100423 20100423 Rolfe Mark 0001469308 4 34 001-34154 10766842 16 OMAR TERRACE NEWTON MA 02460 FACET BIOTECH CORP 0001441848 2834 263070657 DE 1231 1500 SEAPORT BLVD. REDWOOD CITY CA 94063 650-454-1000 1500 SEAPORT BLVD. REDWOOD CITY CA 94063 Biotech Spinco, Inc. 20080804 4 1 primary_doc.xml PRIMARY DOCUMENT