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<TITLE>Form 8-K</TITLE>
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 <P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&nbsp;</P>
<P STYLE="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:4pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>UNITED STATES </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>WASHINGTON, D.C.&nbsp;20549 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>FORM&nbsp;8-K
</B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>CURRENT REPORT </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>PURSUANT
TO SECTION 13 OR 15(d) </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>OF THE SECURITIES EXCHANGE ACT OF 1934 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>(Date of report) September&nbsp;12, 2013 </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>(Date of earliest event reported) September&nbsp;9, 2013 </B></P>
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<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:24pt; font-family:Times New Roman" ALIGN="center"><B>ONEOK PARTNERS, L.P. </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>(Exact name of registrant as specified in its charter) </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top" ALIGN="center"><B>Delaware</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>1-12202</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>93-1120873</B></TD></TR>
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<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(State or other jurisdiction</B></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>of incorporation)</B></P></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Commission</B></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>File Number)</B></P></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(I.R.S. Employer</B></P>
<P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>Identification No.)</B></P></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>100 West Fifth Street; Tulsa, OK </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Address of principal executive offices) </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>74103 </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Zip code)
</B></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>(918) 588-7000 </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Registrant&#146;s telephone number, including area code) </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Not Applicable </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman" ALIGN="center"><B>(Former
name or former address, if changed since last report) </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b)) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR 240.13e-4(c)) </TD></TR></TABLE> <P STYLE="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P>

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<TD WIDTH="10%" VALIGN="top" ALIGN="left"><U>Item&nbsp;1.01</U></TD>
<TD ALIGN="left" VALIGN="top"><U>Entry into a Material Definitive Agreement</U> </TD></TR></TABLE> <P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman"><U>Underwriting Agreement</U> </P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">On September&nbsp;9, 2013, ONEOK Partners, L.P., a Delaware limited partnership (the &#147;Partnership&#148;) and ONEOK Partners Intermediate
Limited Partnership, a Delaware limited partnership and a wholly-owned subsidiary of the Partnership (the &#147;Guarantor&#148;), entered into an underwriting agreement (the &#147;Underwriting Agreement&#148;) with RBS Securities Inc., Merrill
Lynch, Pierce, Fenner&nbsp;&amp; Smith Incorporated and Deutsche Bank Securities Inc., as representatives (the &#147;Representatives&#148;) of the several underwriters named therein (the &#147;Underwriters&#148;), with respect to the issuance and
sale by the Partnership of (i)&nbsp;$425 million aggregate principal amount of the Partnership&#146;s 3.200% senior notes due 2018 (the &#147;2018 Notes&#148;), (ii)&nbsp;$425 million aggregate principal amount of the Partnership&#146;s 5.000%
senior notes due 2023 (the &#147;2023 Notes&#148;) and (iii)&nbsp;$400 million aggregate principal amount of the Partnership&#146;s 6.200% senior notes due 2043 (the &#147;2043 Notes&#148; and collectively with the 2018 Notes and the 2023 Notes, the
&#147;Notes&#148;). </P> <P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The Underwriting Agreement contains customary representations, warranties and agreements by the Partnership and the
Guarantor, and customary conditions to closing, indemnification obligations of both the Partnership and the Guarantor, on the one hand, and the Underwriters, on the other hand, including for liabilities under the Securities Act of 1933, as amended
(the &#147;Act&#148;), obligations of the parties and termination provisions. The Partnership also agreed not to offer or sell certain debt securities until October&nbsp;9, 2013 without the prior written consent of the Representatives. The foregoing
description of the Underwriting Agreement is qualified in its entirety by reference to such Underwriting Agreement, a copy of which is filed herewith as Exhibit 1.1 and is incorporated herein by reference. </P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The Partnership registered the sale of the Notes with the Securities and Exchange Commission (the &#147;Commission&#148;) pursuant to a
Registration Statement on Form S-3 (Registration No.&nbsp;333-183287) filed on August&nbsp;13, 2012 (the &#147;Registration Statement&#148;). On September&nbsp;12, 2013, the Partnership completed the underwritten public offering (the
&#147;Offering&#148;) of the Notes. The Partnership intends to use the net proceeds from the Offering of approximately $1.24 billion, after deducting underwriting discounts and offering expenses, to repay amounts outstanding under its $1.2 billion
commercial paper program, and for general partnership purposes. </P> <P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman"><U>Indenture, Supplemental Indenture and Notes</U> </P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The terms of the Notes are governed by the Indenture, dated as of September&nbsp;25, 2006 (the &#147;Indenture&#148;), between the Partnership
and Wells Fargo Bank, N.A., as trustee (the &#147;Trustee&#148;), as supplemented by the Tenth Supplemental Indenture with respect to the 2018 Notes (the &#147;Tenth Supplemental Indenture&#148;), the Eleventh Supplemental Indenture with respect to
the 2023 Notes (the &#147;Eleventh Supplemental Indenture&#148;) and the Twelfth Supplemental Indenture with respect to the 2043 Notes (the &#147;Twelfth Supplemental Indenture&#148;), each of which is dated September&nbsp;12, 2013. </P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The Indenture was filed as Exhibit 4.1 to a Form 8-K filed with the Securities and Exchange Commission on September&nbsp;26, 2006 and is
incorporated herein by reference. The Tenth Supplemental Indenture with respect to the 2018 Notes, the Eleventh Supplemental Indenture with respect to the 2023 Notes and the Twelfth Supplemental Indenture with respect to the 2043 Notes are each
filed herewith as Exhibits 4.2, 4.3 and 4.4, respectively, and are each incorporated herein by reference. The form of the 2018 Notes, the 2023 Notes and the 2043 Notes are each filed herewith as Exhibits 4.5, 4.6, and 4.7, respectively, and are each
incorporated herein by reference. In addition, the legal opinion related to the 2018 Notes, the 2023 Notes, the 2043 Notes and the Guarantees related thereto is attached hereto as Exhibit 5.1 and is incorporated herein by reference. </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">1 </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman"><U>Affiliations</U> </P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The Underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include
securities trading, commercial and investment banking, financial advisory, investment management, principal investment, hedging, financing and brokerage activities. The Underwriters and their respective affiliates have provided in the past and may
provide from time to time in the future certain commercial banking, financial advisory, investment banking and other services for the Partnership for which they will receive customary fees. Affiliates of the Representatives and certain of the other
Underwriters are lenders under the Partnership&#146;s $1.2 billion revolving credit agreement. Citigroup Global Markets Inc. is also a manager under the Partnership&#146;s $300 million &#147;at the market&#148; equity program. Affiliates of certain
of the Underwriters hold the Partnership&#146;s common units. Certain of the Underwriters and their respective affiliates may from time to time act as dealers under the Partnership&#146;s $1.2 billion commercial paper program and, to the extent that
they or their affiliates hold such commercial paper, are entitled to receive their respective share of any repayment by the Partnership of amounts outstanding thereunder. As is described above, some of the net proceeds of this offering may be used
to pay down borrowings under the Partnership&#146;s $1.2 billion commercial paper program. </P> <P STYLE="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="10%" VALIGN="top" ALIGN="left"><U>Item&nbsp;2.03</U></TD>
<TD ALIGN="left" VALIGN="top"><U></U><U>Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant</U> </TD></TR></TABLE>
<P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The information included under &#147;Indenture, Supplemental Indenture and Notes&#148; in Item&nbsp;1.01 above is incorporated herein by
reference. </P> <P STYLE="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="10%" VALIGN="top" ALIGN="left"><U>Item&nbsp;7.01</U></TD>
<TD ALIGN="left" VALIGN="top"><U></U><U>Regulation FD Disclosure</U> </TD></TR></TABLE> <P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">The Partnership issued a news release on
September&nbsp;9, 2013, attached hereto as Exhibit 99.1, announcing the pricing of the Notes. This information is not deemed to be &#147;filed&#148; for purposes of Section&nbsp;18 of the Securities Exchange Act of 1934, as amended, and is not
incorporated by reference into any registration statement under the Act. </P> <P STYLE="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="10%" VALIGN="top" ALIGN="left"><U>Item&nbsp;9.01</U></TD>
<TD ALIGN="left" VALIGN="top"><U>Financial Statements and Exhibits</U> </TD></TR></TABLE> <P STYLE="margin-top:6pt; margin-bottom:0pt; margin-left:10%; font-size:10pt; font-family:Times New Roman">(d) Exhibits </P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="bottom" NOWRAP ALIGN="center"> <P STYLE="border-bottom:1.00pt solid #000000; width:51.70pt; font-size:8pt; font-family:Times New Roman" ALIGN="center">Exhibit&nbsp;Number</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1.00pt solid #000000; width:37.25pt; font-size:8pt; font-family:Times New Roman">Description</P></TD></TR>


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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;1.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Underwriting Agreement dated September 9, 2013, among ONEOK Partners, L.P. and ONEOK Partners Intermediate Limited Partnership and RBS Securities Inc., Merrill Lynch, Pierce, Fenner &amp; Smith Incorporated and Deutsche Bank
Securities Inc., as representatives of the several underwriters named therein.</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Indenture, dated as of September 25, 2006, among ONEOK Partners, L.P. and Wells Fargo Bank, N.A., as trustee (incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K, filed by ONEOK Partners, L.P. on September 26,
2006).</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.2</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Tenth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 3.200% Senior Notes due 2018 (the
&#147;2018 Notes&#148;).</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.3</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Eleventh Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 5.000% Senior Notes due 2023 (the
&#147;2023 Notes&#148;).</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.4</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Twelfth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 6.200% Senior Notes due 2043 (together
with the 2018 Notes and 2023 Notes, the &#147;Notes&#148;).&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD></TR></TABLE>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">2 </P>


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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.5</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">Form of Senior Note due 2018 (included in Exhibit 4.2 above).</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.6</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">Form of Senior Note due 2023 (included in Exhibit 4.3 above).</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.7</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">Form of Senior Note due 2043 (included in Exhibit 4.4 above).</TD></TR>
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<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;5.1</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">Opinion of Fried, Frank, Harris, Shriver &amp; Jacobson LLP regarding the Notes&#146; validity.</TD></TR>
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<TD VALIGN="top" NOWRAP>23.1</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">Consent of Fried, Frank, Harris, Shriver &amp; Jacobson LLP (contained in Exhibit 5.1 hereto).</TD></TR>
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<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>99.1</TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top">News release of ONEOK Partners, L.P. announcing the pricing of its public offering of the Notes.</TD></TR>
</TABLE>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">3 </P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">SIGNATURE </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized. </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt">


<TR>
<TD WIDTH="48%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="2%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="48%"></TD></TR>


<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"> <P STYLE="margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">ONEOK Partners, L.P.</P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">By:</P></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom">ONEOK Partners GP, L.L.C., its General Partner</TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Date: September&nbsp;12, 2013</P></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom">By:</TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000">/s/ Derek S. Reiners</TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Senior Vice President, Chief Financial Officer</P></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT STYLE="font-size:8pt">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">and Treasurer</P></TD></TR>
</TABLE>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">4 </P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">EXHIBIT INDEX </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


<TR>
<TD></TD>
<TD VALIGN="bottom" WIDTH="10%"></TD>
<TD WIDTH="87%"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:8pt">
<TD VALIGN="bottom" NOWRAP> <P STYLE="border-bottom:1.00pt solid #000000; width:51.70pt; font-size:8pt; font-family:Times New Roman">Exhibit&nbsp;Number</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="border-bottom:1.00pt solid #000000"> <P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman" ALIGN="center">Description</P></TD></TR>


<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;1.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Underwriting Agreement dated September 9, 2013, among ONEOK Partners, L.P. and ONEOK Partners Intermediate Limited Partnership and RBS Securities Inc., Merrill Lynch, Pierce, Fenner &amp; Smith Incorporated and Deutsche Bank
Securities Inc., as representatives of the several underwriters named therein.</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Indenture, dated as of September 25, 2006, among ONEOK Partners, L.P. and Wells Fargo Bank, N.A., as trustee (incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K, filed by ONEOK Partners, L.P. on September 26,
2006).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.2</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Tenth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 3.200% Senior Notes due 2018 (the
&#147;2018 Notes&#148;).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.3</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Eleventh Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 5.000% Senior Notes due 2023 (the
&#147;2023 Notes&#148;).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.4</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Twelfth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 6.200% Senior Notes due 2043 (together
with the 2018 Notes and 2023 Notes, the &#147;Notes&#148;).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.5</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Form of Senior Note due 2018 (included in Exhibit 4.2 above).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.6</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Form of Senior Note due 2023 (included in Exhibit 4.3 above).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;4.7</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Form of Senior Note due 2043 (included in Exhibit 4.4 above).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>&nbsp;&nbsp;5.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Opinion of Fried, Frank, Harris, Shriver &amp; Jacobson LLP regarding the Notes&#146; validity.</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>23.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Consent of Fried, Frank, Harris, Shriver &amp; Jacobson LLP (contained in Exhibit 5.1 hereto).</TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR STYLE="font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" NOWRAP>99.1</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">News release of ONEOK Partners, L.P. announcing the pricing of its public offering of the Notes.</TD></TR>
</TABLE>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">5 </P>

</BODY></HTML>
[{"type": "8-K", "sequence": "1", "filename": "d596840d8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 32405}]
{"company-data": {"conformed-name": "ONEOK Partners LP", "cik": "0000909281", "assigned-sic": "4922", "irs-number": "931120873", "state-of-incorporation": "DE", "fiscal-year-end": "0216"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-12202", "film-number": "131093756"}, "business-address": {"street1": "100 WEST FIFTH STREET", "city": "TULSA", "state": "OK", "zip": "74103", "phone": "9185887000"}, "mail-address": {"street1": "100 WEST FIFTH STREET", "city": "TULSA", "state": "OK", "zip": "74103"}, "former-company": {"former-conformed-name": "NORTHERN BORDER PARTNERS LP", "date-changed": "19930719"}}
Form 8-K
UNITED STATES
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) September 12, 2013
(Date of earliest event reported) September 9, 2013
ONEOK PARTNERS, L.P.
(Exact name of registrant as specified in its charter)
Delaware
1-12202
93-1120873
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(I.R.S. Employer
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 communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange 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 1.01
Entry into a Material Definitive Agreement
Underwriting Agreement
On September 9, 2013, ONEOK Partners, L.P., a Delaware limited partnership (the "Partnership") and ONEOK Partners Intermediate
Limited Partnership, a Delaware limited partnership and a wholly-owned subsidiary of the Partnership (the "Guarantor"), entered into an underwriting agreement (the "Underwriting Agreement") with RBS Securities Inc., Merrill
Lynch, Pierce, Fenner & Smith Incorporated and Deutsche Bank Securities Inc., as representatives (the "Representatives") of the several underwriters named therein (the "Underwriters"), with respect to the issuance and
sale by the Partnership of (i) $425 million aggregate principal amount of the Partnership's 3.200% senior notes due 2018 (the "2018 Notes"), (ii) $425 million aggregate principal amount of the Partnership's 5.000%
senior notes due 2023 (the "2023 Notes") and (iii) $400 million aggregate principal amount of the Partnership's 6.200% senior notes due 2043 (the "2043 Notes" and collectively with the 2018 Notes and the 2023 Notes, the
"Notes").
The Underwriting Agreement contains customary representations, warranties and agreements by the Partnership and the
Guarantor, and customary conditions to closing, indemnification obligations of both the Partnership and the Guarantor, on the one hand, and the Underwriters, on the other hand, including for liabilities under the Securities Act of 1933, as amended
(the "Act"), obligations of the parties and termination provisions. The Partnership also agreed not to offer or sell certain debt securities until October 9, 2013 without the prior written consent of the Representatives. The foregoing
description of the Underwriting Agreement is qualified in its entirety by reference to such Underwriting Agreement, a copy of which is filed herewith as Exhibit 1.1 and is incorporated herein by reference.
The Partnership registered the sale of the Notes with the Securities and Exchange Commission (the "Commission") pursuant to a
Registration Statement on Form S-3 (Registration No. 333-183287) filed on August 13, 2012 (the "Registration Statement"). On September 12, 2013, the Partnership completed the underwritten public offering (the
"Offering") of the Notes. The Partnership intends to use the net proceeds from the Offering of approximately $1.24 billion, after deducting underwriting discounts and offering expenses, to repay amounts outstanding under its $1.2 billion
commercial paper program, and for general partnership purposes.
Indenture, Supplemental Indenture and Notes
The terms of the Notes are governed by the Indenture, dated as of September 25, 2006 (the "Indenture"), between the Partnership
and Wells Fargo Bank, N.A., as trustee (the "Trustee"), as supplemented by the Tenth Supplemental Indenture with respect to the 2018 Notes (the "Tenth Supplemental Indenture"), the Eleventh Supplemental Indenture with respect to
the 2023 Notes (the "Eleventh Supplemental Indenture") and the Twelfth Supplemental Indenture with respect to the 2043 Notes (the "Twelfth Supplemental Indenture"), each of which is dated September 12, 2013.
The Indenture was filed as Exhibit 4.1 to a Form 8-K filed with the Securities and Exchange Commission on September 26, 2006 and is
incorporated herein by reference. The Tenth Supplemental Indenture with respect to the 2018 Notes, the Eleventh Supplemental Indenture with respect to the 2023 Notes and the Twelfth Supplemental Indenture with respect to the 2043 Notes are each
filed herewith as Exhibits 4.2, 4.3 and 4.4, respectively, and are each incorporated herein by reference. The form of the 2018 Notes, the 2023 Notes and the 2043 Notes are each filed herewith as Exhibits 4.5, 4.6, and 4.7, respectively, and are each
incorporated herein by reference. In addition, the legal opinion related to the 2018 Notes, the 2023 Notes, the 2043 Notes and the Guarantees related thereto is attached hereto as Exhibit 5.1 and is incorporated herein by reference.
1
Affiliations
The Underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include
securities trading, commercial and investment banking, financial advisory, investment management, principal investment, hedging, financing and brokerage activities. The Underwriters and their respective affiliates have provided in the past and may
provide from time to time in the future certain commercial banking, financial advisory, investment banking and other services for the Partnership for which they will receive customary fees. Affiliates of the Representatives and certain of the other
Underwriters are lenders under the Partnership's $1.2 billion revolving credit agreement. Citigroup Global Markets Inc. is also a manager under the Partnership's $300 million "at the market" equity program. Affiliates of certain
of the Underwriters hold the Partnership's common units. Certain of the Underwriters and their respective affiliates may from time to time act as dealers under the Partnership's $1.2 billion commercial paper program and, to the extent that
they or their affiliates hold such commercial paper, are entitled to receive their respective share of any repayment by the Partnership of amounts outstanding thereunder. As is described above, some of the net proceeds of this offering may be used
to pay down borrowings under the Partnership's $1.2 billion commercial paper program.
Item 2.03
Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
The information included under "Indenture, Supplemental Indenture and Notes" in Item 1.01 above is incorporated herein by
reference.
Item 7.01
Regulation FD Disclosure
The Partnership issued a news release on
September 9, 2013, attached hereto as Exhibit 99.1, announcing the pricing of the Notes. This information is not deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not
incorporated by reference into any registration statement under the Act.
Item 9.01
Financial Statements and Exhibits
(d) Exhibits
Exhibit Number
Description
1.1
Underwriting Agreement dated September 9, 2013, among ONEOK Partners, L.P. and ONEOK Partners Intermediate Limited Partnership and RBS Securities Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Deutsche Bank
Securities Inc., as representatives of the several underwriters named therein.
4.1
Indenture, dated as of September 25, 2006, among ONEOK Partners, L.P. and Wells Fargo Bank, N.A., as trustee (incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K, filed by ONEOK Partners, L.P. on September 26,
2006).
4.2
Tenth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 3.200% Senior Notes due 2018 (the
"2018 Notes").
4.3
Eleventh Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 5.000% Senior Notes due 2023 (the
"2023 Notes").
4.4
Twelfth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 6.200% Senior Notes due 2043 (together
with the 2018 Notes and 2023 Notes, the "Notes").
2
4.5
Form of Senior Note due 2018 (included in Exhibit 4.2 above).
4.6
Form of Senior Note due 2023 (included in Exhibit 4.3 above).
4.7
Form of Senior Note due 2043 (included in Exhibit 4.4 above).
5.1
Opinion of Fried, Frank, Harris, Shriver & Jacobson LLP regarding the Notes' validity.
23.1
Consent of Fried, Frank, Harris, Shriver & Jacobson LLP (contained in Exhibit 5.1 hereto).
99.1
News release of ONEOK Partners, L.P. announcing the pricing of its public offering of the Notes.
3
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.
ONEOK Partners, L.P.
By:
ONEOK Partners GP, L.L.C., its General Partner
Date: September 12, 2013
By:
/s/ Derek S. Reiners
Senior Vice President, Chief Financial Officer
and Treasurer
4
EXHIBIT INDEX
Exhibit Number
Description
1.1
Underwriting Agreement dated September 9, 2013, among ONEOK Partners, L.P. and ONEOK Partners Intermediate Limited Partnership and RBS Securities Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Deutsche Bank
Securities Inc., as representatives of the several underwriters named therein.
4.1
Indenture, dated as of September 25, 2006, among ONEOK Partners, L.P. and Wells Fargo Bank, N.A., as trustee (incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K, filed by ONEOK Partners, L.P. on September 26,
2006).
4.2
Tenth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 3.200% Senior Notes due 2018 (the
"2018 Notes").
4.3
Eleventh Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 5.000% Senior Notes due 2023 (the
"2023 Notes").
4.4
Twelfth Supplemental Indenture, dated September 12, 2013, among ONEOK Partners, L.P., ONEOK Partners Intermediate Limited Partnership and Wells Fargo Bank, N.A., as trustee, with respect to the 6.200% Senior Notes due 2043 (together
with the 2018 Notes and 2023 Notes, the "Notes").
4.5
Form of Senior Note due 2018 (included in Exhibit 4.2 above).
4.6
Form of Senior Note due 2023 (included in Exhibit 4.3 above).
4.7
Form of Senior Note due 2043 (included in Exhibit 4.4 above).
5.1
Opinion of Fried, Frank, Harris, Shriver & Jacobson LLP regarding the Notes' validity.
23.1
Consent of Fried, Frank, Harris, Shriver & Jacobson LLP (contained in Exhibit 5.1 hereto).
99.1
News release of ONEOK Partners, L.P. announcing the pricing of its public offering of the Notes.
5