X0202 4 2007-12-17 0 0001045309 W R GRACE & CO GRA 0001211199 NORRIS PAUL J C/O W.R. GRACE & CO 7500 GRACE DR COLUMBIA MD 21044 1 0 0 0 Common Stock, par value $0.01 per share 2007-12-17 4 M 0 400000 16.75 A 538822 D Common Stock, par value $0.01 per share 2007-12-17 4 S 0 400000 24.2588 D 138822 D Common Stock, par value $0.01 per share 2007-12-18 4 M 0 39026 16.75 A 177848 D Common Stock, par value $0.01 per share 2007-12-18 4 M 0 315000 13.4688 A 492848 D Common Stock, par value $0.01 per share 2007-12-18 4 M 0 227774 12.8125 A 720622 D Common Stock, par value $0.01 per share 2007-12-18 4 S 0 581800 23.3933 D 138822 D Common Stock, par value $0.01 per share 2007-12-17 4 M 0 400000 10.25 A 538822 D Common Stock, par value $0.01 per share 2007-12-17 4 D 0 400000 16.75 D 138822 D Common Stock, par value $0.01 per share 2007-12-18 4 M 0 39026 10.25 A 177848 D Common Stock, par value $0.01 per share 2007-12-18 4 D 0 39026 16.75 D 138822 D Common Stock, par value $0.01 per share 2007-12-19 4 M 0 62226 12.8125 A 201848 D Common Stock, par value $0.01 per share 2007-12-19 4 M 0 121000 2.4 A 322048 D Common Stock, par value $0.01 per share 2007-12-19 4 S 0 183226 23.4695 D 138822 D Employee Stock Options (rights to buy) 16.75 2007-12-17 4 M 0 400000 0 D 2001-11-01 2008-05-31 Common Stock 400000 39026 D Employee Stock Options (rights to buy) 16.75 2007-12-18 4 M 0 39026 0 D 2001-11-01 2008-05-31 Common Stock 39026 0 D Employee Stock Options (rights to buy) 13.4688 2007-12-18 4 M 0 315000 0 D 2003-05-10 2008-05-31 Common Stock 315000 0 D Employee Stock Options (rights to buy) 12.8125 2007-12-18 4 M 0 227774 0 D 2002-03-04 2008-05-31 Common Stock 227774 62226 D Employee Stock Options (rights to buy) 12.8125 2007-12-19 4 M 0 62226 0 D 2002-03-04 2008-05-31 Common Stock 62226 0 D Employee Stock Options (rights to buy) 2.4 2007-12-19 4 M 0 121000 0 D 2004-03-08 2008-05-31 Common Stock 121000 0 D Stock Appreciation Right 10.25 2007-12-17 4 M 0 400000 0 D 2001-11-01 2008-05-31 Common Stock 400000 39026 D Stock Appreciation Right 10.25 2007-12-18 4 M 0 39026 0 D 2001-11-01 2008-05-31 Common Stock 39026 0 D Each share of Common Stock also represents one Preferred Share Purchase Right. Each such Right entitles the holder to purchase Preferred Stock or other securities or property upon the occurrence of certain events and subject to certain conditions. Exercise and Sale Pursuant to Rule 10b5-1 Trading Plan adopted May 2007 for options expiring May 31, 2008. Price constitutes weighted average price of trades by the Reporting Person in the open market on the date indicated. Sale prices on 12/17/07 ranged from $23.53 to $25.35. Sale prices on 12/18/07 ranged from $23.00 to $23.91. Sale prices on 12/19/07 ranged from $23.01 to $23.69. Because the price per share of Grace Common Stock exceeded $16.75 on the date of exercise of the Stock Appreciation Right, the Stock Appreciation Right constitutes right to a payment equal to the product of the number of shares exercised multiplied by $6.50. Michael W. Conron, Attorney-in-Fact 2007-12-19