| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G | 2010-01-29 | BlackRock Inc. | W R GRACE & CO | 3,719,146 | 5.2% | EDGAR |
| SC 13G | 2009-12-24 | ADAGE CAPITAL PARTNERS GP LLC | W R GRACE & CO | 3,661,356 | 5.1% | EDGAR |
| SC 13G/A | 2009-02-17 | FMR LLC | W R GRACE & CO | 10,801,627 | 15.0% | EDGAR |
| SC 13G/A | 2009-02-13 | CITADEL HOLDINGS I LP | W R GRACE & CO | 41 | - | EDGAR |
| SC 13G/A | 2008-12-10 | FMR LLC | W R GRACE & CO | 7,613,367 | 10.6% | EDGAR |
| SC 13G/A | 2008-02-14 | BRENCOURT ADVISORS LLC | W R GRACE & CO | 3,266,100 | 4.6% | EDGAR |
| SC 13G/A | 2008-02-13 | CITADEL INVESTMENT GROUP LLC | W R GRACE & CO | 4,093,241 | - | EDGAR |
| SC 13G/A | 2008-02-08 | CAXTON ASSOCIATES LLC | W R GRACE & CO | 760,089 | 1.1% | EDGAR |
| SC 13G | 2007-10-31 | BRENCOURT ADVISORS LLC | W R GRACE & CO | 3,516,600 | 5.0% | EDGAR |
| SC 13G | 2007-08-23 | CAXTON ASSOCIATES LLC | W R GRACE & CO | 929,720 | 1.3% | EDGAR |
| SC 13G/A | 2007-02-13 | CITADEL L P | W R GRACE & CO | 4,094,213 | - | EDGAR |
| SC 13G/A | 2007-02-12 | DELTA PARTNERS LLC | W R GRACE & CO | 3,219,400 | 4.7% | EDGAR |
| SC 13G/A | 2007-02-02 | PLAINFIELD ASSET MANAGEMENT LLC | W R GRACE & CO | 100 | 0.0% | EDGAR |
| SC 13G | 2006-05-01 | DELTA PARTNERS LLC | W R GRACE & CO | 3,400,000 | 5.1% | EDGAR |
| SC 13G/A | 2006-02-15 | ARDSLEY ADVISORY PARTNERS | W R GRACE & CO | 930,000 | 1.4% | EDGAR |
| SC 13G | 2006-02-14 | Plainfield Asset Management LLC | W R GRACE & CO | 3,854,300 | 5.5% | EDGAR |
| SC 13G/A | 2006-02-13 | CITADEL L P | W R GRACE & CO | 4,060,868 | - | EDGAR |
| SC 13G | 2005-02-18 | CITADEL L P | W R GRACE & CO | 3,908,520 | - | EDGAR |
| SC 13G/A | 2005-02-14 | DE SHAW LAMINAR PORTFOLIOS LLC | W R GRACE & CO | 3,066,900 | 4.7% | EDGAR |
| SC 13G/A | 2005-02-11 | ARDSLEY ADVISORY PARTNERS | W R GRACE & CO | 1,000,000 | 1.5% | EDGAR |