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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED STATES</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">WASHINGTON, D.C.&#160; 20549</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">PURSUANT TO SECTION&nbsp;13 OR 15 (d)</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">OF THE SECURITIES EXCHANGE ACT OF 1934</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">DATE OF EARLIEST EVENT REPORTED:&#160; <b>May&nbsp;23, 2013</b></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">HELMERICH&nbsp;&amp; PAYNE,&nbsp;INC.</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of registrant as specified in its charter)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">State of Incorporation:<b>&#160; Delaware</b></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">COMMISSION FILE NUMBER <b>1-4221</b></font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Internal Revenue Service &#151; Employer Identification No.<b>&nbsp;73-0679879</b></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1437 South Boulder Avenue, Suite&nbsp;1400, Tulsa, Oklahoma 74119</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of Principal Executive Offices)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(918)742-5531</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone number, including area code)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">N/A</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former Name or Former Address, if Changed since Last Report)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box below if the Form&nbsp;8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;"> &#160;Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&#160; Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&#160; Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&#160; Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ITEM 1.01&#160; ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT</font></b></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On May&nbsp;23, 2013, Helmerich&nbsp;&amp; Payne International Drilling Co. (&#147;H&amp;P Drilling&#148;), a wholly owned subsidiary of Helmerich&nbsp;&amp; Payne,&nbsp;Inc. (&#147;H&amp;P&#148;), executed a block sale with Goldman, Sachs&nbsp;&amp; Co. for the sale of 2,000,000 shares of the common stock of Atwood Oceanics,&nbsp;Inc., a Delaware corporation (the &#147;Issuer&#148;), at a per share price of $53.43.&#160; </font><font size="2" style="font-size:10.0pt;">In connection with the block sale to Goldman, Sachs&nbsp;&amp; Co., H&amp;P Drilling executed a lock-up agreement (the &#147;Lock-Up Agreement&#148;) in which it agreed that, during a period of 60-days after the date of the block sale, it would not offer, sell, contract to sell, pledge, grant any option to purchase, make any short sale or otherwise dispose of any shares of the common stock of the Issuer, or any options or warrants to purchase any such shares, or any securities convertible into, exchangeable for or that represent the right to receive such shares, other than the 2,000,000 shares pursuant to the Agreement (defined hereafter) with the Issuer.&#160; On May&nbsp;23, 2013, H&amp;P Drilling also entered into a stock purchase agreement (the &#147;Agreement&#148;) with the Issuer pursuant to which, among other things, the Issuer agreed to purchase 2,000,000 shares of the Issuer&#146;s common stock held by H&amp;P Drilling at a price of $53.53 per share.&#160; The sale is expected to be consummated on June&nbsp;13, 2013.&#160; One of H&amp;P&#146;s executive officers, Hans Helmerich, is a director of the Issuer.&#160; George S. Dotson, a director of the Issuer, was previously but is no longer an executive officer of H&amp;P.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The foregoing description of the Agreement and the Lock-Up Agreement is only a summary, is not complete, should be read together with, and is qualified in its entirety by reference to, the entire Agreement and Lock-Up Agreement, which are filed herewith as Exhibits 10.1 and 10.2, respectively, and are incorporated herein by reference.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ITEM 9.01</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">FINANCIAL STATEMENTS AND EXHIBITS</font></b></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Exhibits.</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;Number</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stock Purchase Agreement, dated as of May&nbsp;23,   2013, by and between Helmerich&nbsp;&amp; Payne International Drilling Co.   and Atwood Oceanics,&nbsp;Inc.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.2</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Lock-Up-Agreement, dated as of May&nbsp;23, 2013,   by and between Helmerich&nbsp;&amp; Payne International Drilling Co. and   Goldman, Sachs&nbsp;&amp; Co.</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt 2.0in;text-indent:-1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>
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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly authorized the undersigned to sign this report on its behalf.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">HELMERICH&nbsp;&amp;   PAYNE,&nbsp;INC.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant)</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/   Steven R. Mackey</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Steven   R. Mackey</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Executive   Vice President</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">DATE:   May&nbsp;28, 2013</font></p>    </td>   </tr>  </table>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2<a name="PB_2_203748_7056"></a></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT&nbsp;INDEX</font></b></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;Number</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stock Purchase Agreement, dated as of May&nbsp;23,   2013, by and between Helmerich&nbsp;&amp; Payne International Drilling Co. and   Atwood Oceanics,&nbsp;Inc.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.2</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Lock-Up-Agreement, dated as of May&nbsp;23, 2013,   by and between Helmerich&nbsp;&amp; Payne International Drilling Co. and   Goldman, Sachs&nbsp;&amp; Co.</font></p>    </td>   </tr>  </table>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3<a name="PB_3_203805_5335"></a></font></p>
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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 EARLIEST EVENT REPORTED:
May 23, 2013
HELMERICH & PAYNE, INC.
(Exact name of registrant as specified in its charter)
State of Incorporation:
Delaware
COMMISSION FILE NUMBER
1-4221
Internal Revenue Service — Employer Identification No.
73-0679879
1437 South Boulder Avenue, Suite 1400, Tulsa, Oklahoma 74119
(Address of Principal Executive Offices)
(918)742-5531
(Registrant's telephone number, including area code)
N/A
(Former Name or Former Address, if Changed since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
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
On May 23, 2013, Helmerich & Payne International Drilling Co. ("H&P Drilling"), a wholly owned subsidiary of Helmerich & Payne, Inc. ("H&P"), executed a block sale with Goldman, Sachs & Co. for the sale of 2,000,000 shares of the common stock of Atwood Oceanics, Inc., a Delaware corporation (the "Issuer"), at a per share price of $53.43.
In connection with the block sale to Goldman, Sachs & Co., H&P Drilling executed a lock-up agreement (the "Lock-Up Agreement") in which it agreed that, during a period of 60-days after the date of the block sale, it would not offer, sell, contract to sell, pledge, grant any option to purchase, make any short sale or otherwise dispose of any shares of the common stock of the Issuer, or any options or warrants to purchase any such shares, or any securities convertible into, exchangeable for or that represent the right to receive such shares, other than the 2,000,000 shares pursuant to the Agreement (defined hereafter) with the Issuer.  On May 23, 2013, H&P Drilling also entered into a stock purchase agreement (the "Agreement") with the Issuer pursuant to which, among other things, the Issuer agreed to purchase 2,000,000 shares of the Issuer's common stock held by H&P Drilling at a price of $53.53 per share.  The sale is expected to be consummated on June 13, 2013.  One of H&P's executive officers, Hans Helmerich, is a director of the Issuer.  George S. Dotson, a director of the Issuer, was previously but is no longer an executive officer of H&P.
The foregoing description of the Agreement and the Lock-Up Agreement is only a summary, is not complete, should be read together with, and is qualified in its entirety by reference to, the entire Agreement and Lock-Up Agreement, which are filed herewith as Exhibits 10.1 and 10.2, respectively, and are incorporated herein by reference.
ITEM 9.01
FINANCIAL STATEMENTS AND EXHIBITS
(d)
Exhibits.
Exhibit Number
Description
10.1
Stock Purchase Agreement, dated as of May 23,   2013, by and between Helmerich & Payne International Drilling Co.   and Atwood Oceanics, Inc.
10.2
Lock-Up-Agreement, dated as of May 23, 2013,   by and between Helmerich & Payne International Drilling Co. and   Goldman, Sachs & Co.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly authorized the undersigned to sign this report on its behalf.
HELMERICH &   PAYNE, INC.
(Registrant)
/s/   Steven R. Mackey
Steven   R. Mackey
Executive   Vice President
DATE:   May 28, 2013
2
EXHIBIT INDEX
Exhibit Number
Description
10.1
Stock Purchase Agreement, dated as of May 23,   2013, by and between Helmerich & Payne International Drilling Co. and   Atwood Oceanics, Inc.
10.2
Lock-Up-Agreement, dated as of May 23, 2013,   by and between Helmerich & Payne International Drilling Co. and   Goldman, Sachs & Co.
3