<SEC-DOCUMENT>0001104659-18-027392.txt : 20180427
<SEC-HEADER>0001104659-18-027392.hdr.sgml : 20180427
<ACCEPTANCE-DATETIME>20180427083111
ACCESSION NUMBER:		0001104659-18-027392
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180427
DATE AS OF CHANGE:		20180427
GROUP MEMBERS:		ARCHROCK GENERAL PARTNER, L.P.
GROUP MEMBERS:		ARCHROCK GP LLC
GROUP MEMBERS:		ARCHROCK GP LP LLC
GROUP MEMBERS:		ARCHROCK MLP LP LLC
GROUP MEMBERS:		ARCHROCK PARTNERS CORP.
GROUP MEMBERS:		ARCHROCK SERVICES, L.P.
GROUP MEMBERS:		AROC CORP.
GROUP MEMBERS:		AROC SERVICES GP LLC
GROUP MEMBERS:		AROC SERVICES LP LLC

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Archrock Partners, L.P.
		CENTRAL INDEX KEY:			0001367064
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				223935108
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-82640
		FILM NUMBER:		18781124

	BUSINESS ADDRESS:	
		STREET 1:		9807 KATY FREEWAY
		STREET 2:		STE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024
		BUSINESS PHONE:		281-836-8000

	MAIL ADDRESS:	
		STREET 1:		9807 KATY FREEWAY
		STREET 2:		STE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EXTERRAN PARTNERS, L.P.
		DATE OF NAME CHANGE:	20070821

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Universal Compression Partners, L.P.
		DATE OF NAME CHANGE:	20060621

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Archrock, Inc.
		CENTRAL INDEX KEY:			0001389050
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				743204509
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		9807 KATY FREEWAY
		STREET 2:		STE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024
		BUSINESS PHONE:		281-836-8000

	MAIL ADDRESS:	
		STREET 1:		9807 KATY FREEWAY
		STREET 2:		STE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EXTERRAN HOLDINGS INC.
		DATE OF NAME CHANGE:	20070619

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Iliad Holdings, INC
		DATE OF NAME CHANGE:	20070206
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>a18-12178_1sc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>


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<p align="center" style="margin:0in 0in .0001pt 10.0pt;text-align:center;text-indent:-10.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington, D.C. 20549</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="1" face="Times New Roman" style="font-size:5.0pt;">&nbsp;</font></p>    <div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade align="center" style="color:black;"></div>
<p align="center" style="margin:0in 0in .0001pt 10.0pt;text-align:center;text-indent:-10.0pt;"><b><font size="1" face="Times New Roman" style="font-size:5.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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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;">&nbsp;</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt 10.0pt;text-align:center;text-indent:-10.0pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt 10.0pt;text-align:center;text-indent:-10.0pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">SCHEDULE 13D</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;"><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;">(Rule 13d-101)</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;">Information to be Included in Statements Filed Pursuant to &#167; 240.13d-1(a) and Amendments Thereto Filed Pursuant to &#167; 240.13d-2(a) </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 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;">Under the Securities Exchange Act of 1934 <br> (Amendment No. 6)</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade align="center" style="color:black;"></div>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
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<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">Archrock Partners, L.P.</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;">(Name of Issuer)</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in;">
<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Common Units </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;">(Title of Class of Securities)</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
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<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">03957U 100 </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;">(CUSIP Number)</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>
<div style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in;">
<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Stephanie C. Hildebrandt</font></b></p>
<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">9807 Katy Freeway, Suite 100</font></b></p>
<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Houston, Texas 77024</font></b></p>
<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(281) 836-8000 </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;">(Name, Address and Telephone Number of Person<br> Authorized to Receive Notices and Communications)</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in;">
<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">April 26, 2018</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 Event Which Requires Filing of this Statement)<br><br></font></p>
<p style="margin:0in .5in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is subject of this Schedule 13D, and is filing this statement because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box.&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
<p style="margin:5.0pt .5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Note</font></b><font size="2" style="font-size:10.0pt;">: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.</font></p>
<p style="margin:5.0pt .5in;"><font size="1" face="Times New Roman" style="font-size:6.5pt;position:relative;top:-3.0pt;">*</font><font size="2" style="font-size:10.0pt;">&#160;The remainder of this cover page shall be filled out for a reporting person&#146;s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. </font></p>
<p style="margin:0in .5in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The information required on the remainder of this cover page shall not be deemed to be &#147;filed&#148; for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the &#147;Act&#148;), or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).</font></p>
<p style="margin:0in .5in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
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<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   Archrock, Inc.</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<p style="margin:4.0pt 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:4.0pt 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:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Source of   Funds: <br>    </font><font size="2" style="font-size:10.0pt;">OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Voting Power: <br>    </font><font size="2" style="font-size:10.0pt;">0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared   Voting Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole Dispositive   Power:</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):</font><font size="2" style="font-size:10.0pt;">  <br>   100%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; CO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<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>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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" style="font-size:10.0pt;">2</font><a name="PB_2_145017_3346"></a></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
</div>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.34%;">
<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.32%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</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;">&nbsp;</font></p>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   AROC Corp.</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Source of   Funds: <br>    </font><font size="2" style="font-size:10.0pt;">OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Voting Power: <br>    </font><font size="2" style="font-size:10.0pt;">0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared   Voting Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Dispositive Power:</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>    </font><font size="2" style="font-size:10.0pt;">70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares :</font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp; </font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):</font><font size="2" style="font-size:10.0pt;">  <br>   100%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; CO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<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>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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" style="font-size:10.0pt;">3</font><font size="2"><a name="PB_3_114336_7056"></a></font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
</div>
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<div style="font-family:Times New Roman;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;">
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<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.34%;">
<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.32%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
</div>
<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>
<div align="center">
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;">
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   AROC Services GP LLC</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Source of   Funds: <br>    </font><font size="2" style="font-size:10.0pt;">OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Voting Power: <br>    </font><font size="2" style="font-size:10.0pt;">0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared   Voting Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Dispositive Power:</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):</font><font size="2" style="font-size:10.0pt;">  <br>   100%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<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>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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" style="font-size:10.0pt;">4</font><font size="2"><a name="PB_4_114400_5335"></a></font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
</div>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.34%;">
<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.32%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</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;">&nbsp;</font></p>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   AROC Services LP LLC</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Source of   Funds: <br>    </font><font size="2" style="font-size:10.0pt;">OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Voting Power: <br>    </font><font size="2" style="font-size:10.0pt;">0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared   Voting Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole   Dispositive Power:</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):</font><font size="2" style="font-size:10.0pt;">  <br>   100%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<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>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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" style="font-size:10.0pt;">5</font><font size="2"><a name="PB_5_124057_2243"></a></font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
</div>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div align="center">
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;">
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<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No. 03957U 100</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.34%;">
<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
<td width="33%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:33.32%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
</div>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div align="center">
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;">
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of   Reporting Person:<br>   Archrock Services, L.P.</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Source of Funds: <br>    </font><font size="2" style="font-size:10.0pt;">OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole Voting Power: <br>    </font><font size="2" style="font-size:10.0pt;">0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Voting Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sole Dispositive Power:</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate Amount Beneficially Owned by Each Reporting   Person:*</font><font size="2" style="font-size:10.0pt;">  <br>   70,231,036</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if the Aggregate Amount in Row (11) Excludes Certain   Shares: </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Percent of Class Represented by Amount in Row (11):</font><font size="2" style="font-size:10.0pt;">  <br>   100%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; CO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<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>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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" style="font-size:10.0pt;">6</font><font size="2"><a name="PB_6_124107_7056"></a></font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
</div>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
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<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
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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>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   Archrock Partners Corp.</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Source of   Funds: <br>    </font>HC; OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Voting Power: <br>    </font>0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Shared   Voting Power:*</font>  <br>   41,166,399</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Dispositive Power:</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   41,166,399</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font>  <br>   41,166,399</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="font-size:10.0pt;margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font>&nbsp;&nbsp;&nbsp;</font><font face="Wingdings">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):**</font>  <br>   58.6%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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="Times New Roman" style="font-size:10.0pt;">** Based on a total of 70,363,681 Common Units outstanding as of April 26, 2018.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">7<a name="PB_7_125126_7056"></a></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
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<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   Archrock MLP LP LLC</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 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:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Source of   Funds: <br>    </font>OO</font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Voting Power: <br>    </font>0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Shared   Voting Power:*</font>  <br><br></font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Dispositive Power:</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   29,064,637</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font>  <br>   29,064,637</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="font-size:10.0pt;margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font>&nbsp;&nbsp;&nbsp;</font><font face="Wingdings">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):**</font>  <br>   41.4%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
</div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade align="left" style="color:black;"></div>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">* Archrock, Inc., AROC Corp., AROC Services GP LLC, AROC Services LP LLC and Archrock Services, L.P. do not directly own any Common Units; however, they may be deemed to beneficially own these Common Units. See Item 5.</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="Times New Roman" style="font-size:10.0pt;">** Based on a total of 70,363,681 Common Units outstanding as of April 26, 2018.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">8<a name="PB_8_125126_5335"></a></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
</div>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
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<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   Archrock GP LP LLC</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Source of   Funds: <br>    </font>OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Voting Power: <br>    </font>0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Shared   Voting Power:*</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Dispositive Power:</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font>  <br>   0</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="font-size:10.0pt;margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font>&nbsp;&nbsp;&nbsp;</font><font face="Wingdings">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Percent of   Class Represented by Amount in Row (11):</font>  <br>   0%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</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>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">9<a name="PB_9_125126_5796"></a></p>
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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>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
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<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
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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>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   Archrock GP LLC</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 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:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Source of   Funds: <br>    </font>OO</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
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<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Voting Power: <br>    </font>0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Shared   Voting Power:*</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Dispositive Power:</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font>  <br>   0</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="font-size:10.0pt;margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font>&nbsp;&nbsp;&nbsp;</font><font face="Wingdings">o</font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):</font>  <br>   0%</font></p>    </td>   </tr>
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<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</font></p>    </td>   </tr>
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<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></td>   </tr> </table>
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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>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">10<a name="PB_10_125140_5421"></a></p>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.   03957U 100</font></p>    </td>
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<p align="center" style="margin:4.0pt 0in;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</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;">&nbsp;</font></p>
<div align="center">
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;">
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name of Reporting Person:<br>   Archrock General Partner, L.P.</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font></p>    </td>
<td width="91%" colspan="4" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the   Appropriate Box if a Member of Group: </font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="8%" colspan="3" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:8.36%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font></p>    </td>
<td width="82%" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:82.72%;">
<p style="margin:4.0pt 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SEC Use   Only: </font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Source of   Funds: <br>    </font>OO</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check if Disclosure of Legal   Proceedings Is Required Pursuant to Items 2(d) or 2(e):&nbsp; </font><font size="2" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Citizenship or Place of   Organization:<br>    </font><font size="2" style="font-size:10.0pt;">Delaware</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="12%" colspan="3" rowspan="7" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:12.04%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Number of<br>   Shares<br>   Beneficially<br>   Owned by<br>   Each<br>   Reporting<br>   Person With:</font></p>    </td>
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Voting Power: <br>    </font>0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Shared   Voting Power:*</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">9.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Sole   Dispositive Power:</font>  <br>   0</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="87%" colspan="3" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:87.96%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr style="page-break-inside:avoid;">
<td width="4%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:4.46%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.</font></p>    </td>
<td width="83%" colspan="2" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:83.5%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shared Dispositive Power:*</font><font size="2" style="font-size:10.0pt;">  <br>   0</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">11.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Aggregate   Amount Beneficially Owned by Each Reporting Person:*</font>  <br>   0</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">12.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="font-size:10.0pt;margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Check if   the Aggregate Amount in Row (11) Excludes Certain Shares: </font>&nbsp;&nbsp;&nbsp;</font><font face="Wingdings">o</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Percent   of Class Represented by Amount in Row (11):</font>  <br>   0%</font></p>    </td>   </tr>
<tr>
<td width="100%" colspan="6" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:100.0%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="3%" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:3.34%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:3.0pt 3.0pt 3.0pt 3.0pt;width:5.58%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">14.</font></p>    </td>
<td width="91%" colspan="4" style="border:none;border-bottom:solid windowtext 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt;width:91.08%;">
<p style="margin:4.0pt 0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Type of   Reporting Person: </font><font size="2" style="font-size:10.0pt;"><br>   HC; OO</font></p>    </td>   </tr>
<tr height="0">
<td width="24" style="border:none;"></td>
<td width="40" style="border:none;"></td>
<td width="22" style="border:none;"></td>
<td width="32" style="border:none;"></td>
<td width="6" style="border:none;"></td>
<td width="586" style="border:none;"></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;">&nbsp;</font></p>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">11<a name="PB_11_125126_3020"></a></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade align="left" style="color:#010101;"></div>
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<div style="font-family:Times New Roman;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<table border="1" cellspacing="0" cellpadding="0" width="100%" style="border:none;border-collapse:collapse;width:100.0%;">
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.&nbsp;03957U 100</font></p>    </td>
<td width="33%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:2.9pt 2.9pt 2.9pt 2.9pt;width:33.34%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
<td width="33%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:2.9pt 2.9pt 2.9pt 2.9pt;width:33.32%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Explanatory Note</font></b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This Amendment No.&nbsp;6 to Schedule 13D (this &#147;Amendment No.&nbsp;6&#148;) amends and supplements the statement on Schedule 13D filed with the United States Securities and Exchange Commission on August&nbsp;28, 2008 (as amended to date, the &#147;Schedule 13D&#148;), relating to the common units representing limited partner interests (the &#147;Common Units&#148;) of Archrock Partners, L.P., a Delaware limited partnership (the &#147;Issuer&#148;). Capitalized terms used herein without definition shall have the meaning set forth in the Schedule 13D.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 1.</font></b><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><b>Security and Issuer.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">No modification is made to Item 1 of the Schedule 13D.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.</font></b><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><b>Identity and Background.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item&nbsp;2 of the Schedule 13D is amended and supplemented by the following:</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The list of Listed Persons set forth on Schedule 1 is hereby amended such that the number next to the heading &#147;Amount Beneficially Owned&#148; under each Listed Person&#146;s name is zero (0), indicating that, following the consummation of, and as a result of, the Merger (as defined below), no Listed Person is the beneficial owner of Common Units.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 3.</font></b><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><b>Source and Amount of Funds or Other Consideration.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">No modification is made to Item 3 of the Schedule 13D.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 4.</font></b><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><b>Purpose of Transaction.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 4 of the Statement is amended and supplemented by the following:</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On April&nbsp;26, 2018, the Issuer merged with and into Amethyst Merger Sub LLC, an indirect wholly owned subsidiary of AROC (&#147;Merger Sub&#148;), with the Issuer surviving the merger as an indirect wholly owned subsidiary of AROC (the &#147;Merger&#148;), pursuant to that certain Agreement and Plan of Merger (the &#147;Original Agreement&#148;), dated as of January&nbsp;1, 2018, by and among the Issuer, AROC, the General Partner and Archrock GP, as amended by Amendment No.&nbsp;1 to Agreement and Plan of Merger (the &#147;Amendment&#148; and the Original Agreement as amended by the Amendment, the &#147;Merger Agreement&#148;), dated as of January&nbsp;11, 2018, by and among the Issuer, the General Partner and Archrock GP.&#160; As a result of the Merger, all outstanding Common Units, other than those owned by AROC and its subsidiaries, were canceled and converted into the right to receive 1.40 shares of common stock, par value $0.01 per share, of AROC (the &#147;AROC Common Stock&#148;) per Common Unit.&#160; As a result of the Merger, the Reporting Persons own all of the outstanding Common Units and the Common Units are no longer publicly traded.&#160; Additionally, all of the Issuer&#146;s incentive distribution rights, which were previously owned indirectly by AROC, were canceled and ceased to exist.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The foregoing description of the Merger Agreement is qualified in its entirety by reference to the Original Agreement and the Amendment, which were filed as Exhibit&nbsp;A and Exhibit&nbsp;B, respectively, to the Schedule 13D on February&nbsp;14, 2018.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">General</font></i></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Except for those matters set forth above in this Amendment No.&nbsp;6, the Reporting Persons do not currently have any plans or proposals that relate to, or would result in, any of the matters listed in Items 4(a)&#150;(j)&nbsp;of Schedule 13D,</font></p>
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<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">12<a name="PB_12_114132_8788"></a></p>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.&nbsp;03957U 100</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">although, depending on the factors discussed herein, the Reporting Persons may change their purposes or formulate different plans or proposals with respect thereto at any time.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 5.</font></b><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><b>Interest in Securities of the Issuer.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 5 of the Statement is amended and supplemented by the following:</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As a result of the Merger described in Item 4 (which Item 4 is incorporated herein by reference), the Reporting Persons own all of the outstanding Common Units.&#160; Because the registration of the Common Units will be terminated, Common Units held by AROC and its subsidiaries will no longer be subject to reporting under Section&nbsp;13(d)&nbsp;of the Exchange Act.&#160; Consequently, this Amendment No.&nbsp;6 constitutes an exit filing for the Reporting Persons.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 6.</font></b><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><b>Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">No modification is made to Item 6 of the Schedule 13D.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item&nbsp;7.</font></b><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><b>Material to be Filed as Exhibits.</b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .75pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">None.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">13<a name="PB_13_114226_7056"></a></p>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.&nbsp;03957U 100</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></u></b></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">After reasonable inquiry and to the best of my knowledge and belief,&nbsp;I certify that the information set forth in this Statement is true, complete and correct.</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dated: April&nbsp;27, 2018</font></p>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK,&nbsp;INC.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President, General Counsel and Secretary</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AROC CORP.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President, General Counsel and Secretary</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AROC SERVICES GP LLC</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President, General Counsel and Secretary</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AROC SERVICES LP LLC</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President, General Counsel and Secretary</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK SERVICES, L.P.</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President, General Counsel and Secretary</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">14<a name="PB_14_115307_5706"></a></p>
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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>
<table border="1" cellspacing="0" cellpadding="0" width="100%" style="border:none;border-collapse:collapse;">
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<td width="33%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:2.9pt 2.9pt 2.9pt 2.9pt;width:33.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CUSIP No.&nbsp;03957U 100</font></p>    </td>
<td width="33%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:2.9pt 2.9pt 2.9pt 2.9pt;width:33.34%;">
<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13D</font></p>    </td>
<td width="33%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:2.9pt 2.9pt 2.9pt 2.9pt;width:33.32%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;">
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK PARTNERS CORP.</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President, General Counsel and Secretary</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK MLP LP LLC</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Pamela A. Jasinski</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pamela A. Jasinski</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Manager</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK GP LP LLC</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Pamela A. Jasinski</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pamela A. Jasinski</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Manager</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK GP LLC</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President and General Counsel</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK GENERAL PARTNER, L.P.</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ARCHROCK GP LLC, its general partner</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
<td width="44%" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.34%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.66%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="7%" valign="top" style="padding:0in 0in 0in 0in;width:7.26%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
<td width="37%" valign="top" style="padding:0in 0in 0in 0in;width:37.08%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stephanie C. Hildebrandt</font></p>    </td>   </tr>
<tr>
<td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;text-autospace:none;"><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;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior Vice President and General Counsel</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:center;">15<a name="PB_15_115408_7056"></a></p>
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