| SC 13D/A | 2012-03-02 | ONEOK INC /NEW/ | ONEOK Partners LP | 1,000,000 | 0.5% | EDGAR |
| SC 13G | 2012-02-14 | FMR LLC | ONEOK INC /NEW/ | 7,036,983 | 6.8% | EDGAR |
| SC 13G/A | 2012-02-10 | BlackRock Inc. | ONEOK INC /NEW/ | 7,724,561 | 7.5% | EDGAR |
| SC 13G | 2012-02-09 | STATE STREET CORP | ONEOK INC /NEW/ | - | 5.3% | EDGAR |
| SC 13G/A | 2012-02-08 | VANGUARD GROUP INC | ONEOK INC /NEW/ | 5,494,634 | 5.3% | EDGAR |
| SC 13G | 2011-02-10 | VANGUARD GROUP INC | ONEOK INC /NEW/ | 5,708,751 | 5.4% | EDGAR |
| SC 13G/A | 2011-02-02 | BlackRock Inc. | ONEOK INC /NEW/ | 8,731,641 | 8.2% | EDGAR |
| SC 13G | 2010-01-08 | BlackRock Inc. | ONEOK INC /NEW/ | 12,725,496 | 12.1% | EDGAR |
| SC 13G | 2009-02-05 | BARCLAYS GLOBAL INVESTORS NA /CA/ | ONEOK INC /NEW/ | 2,884,990 | 2.8% | EDGAR |
| SC 13D | 2008-03-20 | ONEOK INC /NEW/ | ONEOK Partners LP | 500,000 | 0.6% | EDGAR |
| SC 13G | 2008-02-11 | ONEOK INC /NEW/ | ONEOK Partners LP | 500,000 | 0.6% | EDGAR |
| SC 13G | 2008-02-06 | BARCLAYS GLOBAL INVESTORS NA /CA/ | ONEOK INC /NEW/ | 4,271,453 | 4.1% | EDGAR |
| SC 13G/A | 2007-02-05 | FRANKLIN RESOURCES INC | ONEOK INC /NEW/ | 1,975,000 | 1.8% | EDGAR |
| SC 13G/A | 2007-01-18 | BARCLAYS GLOBAL INVESTORS NA /CA/ | ONEOK INC /NEW/ | 2,670,849 | 2.4% | EDGAR |
| SC 13G/A | 2006-02-07 | FRANKLIN RESOURCES INC | ONEOK INC /NEW/ | 5,334,773 | 5.5% | EDGAR |
| SC 13G | 2006-01-26 | BARCLAYS GLOBAL INVESTORS NA /CA/ | ONEOK INC /NEW/ | 5,199,030 | 5.3% | EDGAR |
| SC 13G/A | 2005-02-14 | FRANKLIN RESOURCES INC | ONEOK INC /NEW/ | 5,371,300 | 5.2% | EDGAR |
| SC 13G | 2004-02-17 | BARCLAYS GLOBAL INVESTORS NA /CA/ | ONEOK INC /NEW/ | 5,791,411 | 7.1% | EDGAR |
| SC 13G | 2004-02-09 | FRANKLIN RESOURCES INC | ONEOK INC /NEW/ | 6,106,230 | 7.4% | EDGAR |
| SC 13G/A | 2003-11-26 | WESTAR ENERGY INC /KS | ONEOK INC /NEW/ | 0 | 0.0% | EDGAR |