| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2001-02-14 | FMR CORP | NATIONAL OILWELL INC | 5,927,360 | 7.4% | EDGAR |
| SC 13D/A | 2001-02-05 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 4,757,434 | 5.9% | EDGAR |
| SC 13D/A | 2001-01-31 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 4,943,000 | 6.2% | EDGAR |
| SC 13D/A | 2001-01-03 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 5,849,832 | 7.3% | EDGAR |
| SC 13D/A | 2000-12-21 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 7,231,532 | 9.0% | EDGAR |
| SC 13D/A | 2000-09-12 | - | - | - | - | EDGAR |
| SC 13D/A | 2000-08-24 | - | - | - | - | EDGAR |
| SC 13G | 2000-08-10 | - | - | - | - | EDGAR |
| SC 13G | 2000-08-10 | - | - | - | - | EDGAR |
| SC 13G/A | 2000-07-10 | - | - | - | - | EDGAR |
| SC 13G | 2000-07-07 | - | - | - | - | EDGAR |
| SC 13G | 2000-07-05 | - | - | - | - | EDGAR |
| SC 13G | 2000-07-05 | - | - | - | - | EDGAR |
| SC 13G | 2000-04-14 | MONTELEONE WILLIAM A JR | NATIONAL OILWELL INC | - | - | EDGAR |
| SC 13G/A | 2000-04-10 | INVERNESS PHOENIX LLC | NATIONAL OILWELL INC | 0 | 0.0% | EDGAR |
| SC 13D/A | 2000-03-14 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 0 | 0.0% | EDGAR |
| SC 13D/A | 2000-03-14 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 0 | 0.0% | EDGAR |
| SC 13D/A | 2000-03-14 | FIRST RESERVE CORP /CT/ /ADV | NATIONAL OILWELL INC | 0 | 0.0% | EDGAR |
| SC 13G/A | 2000-03-01 | WESTBURNE INC | NATIONAL OILWELL INC | 905,500 | 1.6% | EDGAR |
| SC 13G/A | 2000-03-01 | WESTBURNE INC | NATIONAL OILWELL INC | 905,500 | 1.6% | EDGAR |