| SC 13G/A | 2010-06-10 | WELLINGTON MANAGEMENT CO LLP | BAKER HUGHES INC | 35,433,664 | 8.3% | EDGAR |
| SC 13G/A | 2010-02-12 | WELLINGTON MANAGEMENT CO LLP | BAKER HUGHES INC | 43,379,335 | 14.0% | EDGAR |
| SC 13G/A | 2010-02-12 | DODGE & COX | BAKER HUGHES INC | 28,112,419 | 9.1% | EDGAR |
| SC 13G/A | 2010-02-11 | Capital Research Global Investors | BAKER HUGHES INC | 32,914,500 | 10.6% | EDGAR |
| SC 13G/A | 2010-02-11 | Capital World Investors | BAKER HUGHES INC | 22,051,764 | 7.1% | EDGAR |
| SC 13G/A | 2010-02-09 | BlackRock Inc. | BAKER HUGHES INC | 15,451,535 | 5.0% | EDGAR |
| SC 13G | 2010-01-29 | BlackRock Inc. | BAKER HUGHES INC | 15,605,510 | 5.0% | EDGAR |
| SC 13G/A | 2009-09-10 | WELLINGTON MANAGEMENT CO LLP | BAKER HUGHES INC | 33,010,275 | 10.6% | EDGAR |
| SC 13G | 2009-02-17 | WELLINGTON MANAGEMENT CO LLP | BAKER HUGHES INC | 15,683,120 | 5.1% | EDGAR |
| SC 13G/A | 2009-02-13 | AXA FINANCIAL INC | BAKER HUGHES INC | 4,701,823 | 1.5% | EDGAR |
| SC 13G/A | 2009-02-13 | Capital Research Global Investors | BAKER HUGHES INC | 34,284,180 | 11.1% | EDGAR |
| SC 13G/A | 2009-02-13 | Capital World Investors | BAKER HUGHES INC | 12,659,690 | 4.1% | EDGAR |
| SC 13G/A | 2009-02-12 | PRICE T ROWE ASSOCIATES INC /MD/ | BAKER HUGHES INC | 11,893,910 | 3.8% | EDGAR |
| SC 13G/A | 2009-02-11 | DODGE & COX | BAKER HUGHES INC | 27,775,617 | 9.0% | EDGAR |
| SC 13G | 2009-02-05 | BARCLAYS GLOBAL INVESTORS NA /CA/ | BAKER HUGHES INC | 10,483,060 | 3.4% | EDGAR |
| SC 13G/A | 2008-10-10 | Capital Research Global Investors | BAKER HUGHES INC | 31,278,180 | 10.1% | EDGAR |
| SC 13G/A | 2008-09-10 | AXA FINANCIAL INC | BAKER HUGHES INC | 15,836,046 | 5.1% | EDGAR |
| SC 13G/A | 2008-02-14 | FMR LLC | BAKER HUGHES INC | 8,203,733 | 2.6% | EDGAR |
| SC 13G/A | 2008-02-13 | CAPITAL RESEARCH & MANAGEMENT CO | BAKER HUGHES INC | - | 0.0% | EDGAR |
| SC 13G/A | 2008-02-13 | DODGE & COX | BAKER HUGHES INC | 19,827,228 | 6.2% | EDGAR |