X0202 4 2008-04-21 1 0001097313 GRANT PRIDECO INC GRP 0001228356 REID JOSEPH E 400 N. SAM HOUSTON PKWY EAST SUITE 900 HOUSTON TX 77060 1 0 0 0 Common Stock 2008-04-21 4 D 0 8500 D 0 D Stock Option 12.44 2008-04-21 4 D 0 55000 D 2006-05-11 2013-05-11 Common Stock 55000 0 D Phantom Stock Units 2008-04-21 4 D 0 2200 D Common Stock 2200 0 D Disposed of pursuant to the Agreement and Plan of Merger dated December 16, 2007, by and among Grant Prideco, Inc., National Oilwell, Inc. and NOV Sub, Inc. (the "Merger Agreement") in exchange for the merger consideration (as defined in the Merger Agreement). Pursuant to the Merger Agreement, this option was assumed by National Oilwell Varco and converted into an option to purchase shares of National Oilwell Varco, Inc., as described in the Merger Agreement. Pursuant to the Merger Agreement, these phantom stock units were converted into the merger consideration and distributed to the individual. Philip A. Choyce, Attorney in Fact 2008-04-23