| SC 13G/A | 2006-02-14 | NEUBERGER BERMAN INC | NATIONAL OILWELL VARCO INC | 7,789,921 | 4.5% | EDGAR |
| SC 13G | 2006-02-10 | FIRST PACIFIC ADVISORS INC | NATIONAL OILWELL VARCO INC | 2,657,900 | 1.5% | EDGAR |
| SC 13G/A | 2005-08-12 | ALGER FRED MANAGEMENT INC | NATIONAL OILWELL VARCO INC | 3,345,000 | 1.9% | EDGAR |
| SC 13G/A | 2005-08-10 | ALGER FRED MANAGEMENT INC | NATIONAL OILWELL VARCO INC | 172,679,000 | 1.9% | EDGAR |
| SC 13G/A | 2005-02-15 | NEUBERGER BERMAN INC | NATIONAL OILWELL INC | 5,878,541 | 6.8% | EDGAR |
| SC 13G/A | 2005-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | NATIONAL OILWELL INC | 3,972,400 | 4.6% | EDGAR |
| SC 13G/A | 2005-02-14 | FMR CORP | NATIONAL OILWELL INC | 12,892,572 | 15.0% | EDGAR |
| SC 13G | 2005-02-11 | FIRST PACIFIC ADVISORS INC | NATIONAL OILWELL INC | 6,087,400 | 7.1% | EDGAR |
| SC 13G | 2005-02-11 | ALGER FRED MANAGEMENT INC | NATIONAL OILWELL INC | 4,818,131 | 5.6% | EDGAR |
| SC 13G/A | 2004-02-17 | FMR CORP | NATIONAL OILWELL INC | 12,758,958 | 15.0% | EDGAR |
| SC 13G | 2004-02-12 | FIRST PACIFIC ADVISORS INC | NATIONAL OILWELL INC | 6,379,400 | 7.5% | EDGAR |
| SC 13G | 2004-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | NATIONAL OILWELL INC | 5,047,000 | 5.9% | EDGAR |
| SC 13G/A | 2004-02-09 | NEUBERGER BERMAN INC | NATIONAL OILWELL INC | 4,917,227 | 5.8% | EDGAR |
| SC 13G/A | 2003-02-14 | FMR CORP | NATIONAL OILWELL INC | 11,497,635 | 14.2% | EDGAR |
| SC 13G/A | 2003-02-14 | PUTNAM LLC | NATIONAL OILWELL INC | 1,699,151 | 2.0% | EDGAR |
| SC 13G | 2003-02-13 | NEUBERGER BERMAN INC | NATIONAL OILWELL INC | 4,145,875 | 5.1% | EDGAR |
| SC 13G/A | 2002-02-15 | PUTNAM INVESTMENTS LLC | NATIONAL OILWELL INC | 5,667,470 | 7.0% | EDGAR |
| SC 13G/A | 2002-02-14 | FMR CORP | NATIONAL OILWELL INC | 12,107,090 | 15.0% | EDGAR |
| SC 13G/A | 2001-05-10 | FMR CORP | NATIONAL OILWELL INC | 8,730,945 | 10.8% | EDGAR |
| SC 13D/A | 2001-02-26 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 101,435 | 0.1% | EDGAR |