SECURITIES AND EXCHANGE COMMISSION

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

(Date of report)

May 16, 2006

(Date of earliest event reported)

May 15, 2006

ONEOK, Inc.

(Exact name of registrant as specified in its charter)

Oklahoma

001-13643

73-1520922

(State or other jurisdiction

(Commission

(IRS Employer

of incorporation)

File Number)

Identification No.)

100 West Fifth Street; Tulsa, OK

(Address of principal executive offices)

74103

(Zip code)

(918) 588-7000

(Registrant's telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

[] Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[] Soliciting material pursuant to Rule 14a-12 under the Securities Act (17 CFR 240.14a-12)

[] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

Item 8.01

Voluntary Disclosure of Other Events

On May 15, 2006, Kansas Gas Service Company, a division of ONEOK, announced that it has filed a request with the Kansas Corporation Commission to increase its annual revenues by $73.3 million. Since its last rate case in 2003, Kansas Gas Service Company has invested approximately $170 million in its natural gas distribution system to provide service for 642,000 Kansas customers. This is the company's first rate increase request in three years. The Kansas Corporation Commission has 240 days to issue a ruling on Kansas Gas Service's application.

Item 9.01

Financial Statements and Exhibits

Exhibits

99.1 Press release issued by Kansas Gas Service, May 15, 2006.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

ONEOK, Inc.

Date:

May 16, 2006

By:

/s/ Jim Kneale

Jim Kneale

Executive Vice President --

Finance and Administration

and Chief Financial Officer

(Principal Financial Officer)

 

 

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