<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
	<head>
		<!-- Document created using Wdesk 1 -->
		<!-- Copyright 2019 Workiva -->
		<title>Document</title>
	</head>
	<body style="font-family:Times New Roman;font-size:10pt;">
<div><a name="sCDC4576685DE7333728C4AC9EE1D4557"></a></div><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:144%;text-align:center;font-size:13.5pt;"><font style="font-family:inherit;font-size:13.5pt;font-weight:bold;">UNITED STATES</font></div><div style="line-height:144%;text-align:center;font-size:13.5pt;"><font style="font-family:inherit;font-size:13.5pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="line-height:144%;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Washington, D.C. 20549</font></div><div style="line-height:144%;text-align:left;font-size:4.5pt;"><font style="font-family:inherit;font-size:4.5pt;"><br></font></div><div style="line-height:144%;padding-top:13px;text-align:center;font-size:13.5pt;"><font style="font-family:inherit;font-size:13.5pt;font-weight:bold;">FORM 8-K</font></div><div style="line-height:144%;text-align:left;font-size:4.5pt;"><font style="font-family:inherit;font-size:4.5pt;"><br></font></div><div style="line-height:144%;padding-top:6px;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">CURRENT REPORT</font></div><div style="line-height:144%;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Pursuant to Section&#160;13 OR 15(d)</font></div><div style="line-height:144%;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">of the Securities Exchange Act of 1934</font></div><div style="line-height:144%;padding-top:6px;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">January 14, 2019</font></div><div style="line-height:144%;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Date of Report (Date of earliest event reported)</font></div><div style="line-height:144%;text-align:left;font-size:4.5pt;"><font style="font-family:inherit;font-size:4.5pt;"><br></font></div><div style="line-height:144%;text-align:center;font-size:7.5pt;"><font style="font-family:inherit;font-size:7.5pt;"><br></font></div><div style="line-height:144%;padding-top:6px;text-align:center;font-size:18pt;"><font style="font-family:inherit;font-size:18pt;font-weight:bold;">THE RUBICON PROJECT, INC.</font></div><div style="line-height:144%;text-align:center;font-size:7.5pt;"><font style="font-family:inherit;font-size:7.5pt;font-weight:bold;">(Exact name of registrant as specified in its charter)</font></div><div style="line-height:144%;text-align:left;font-size:4.5pt;"><font style="font-family:inherit;font-size:4.5pt;"><br></font></div><div style="line-height:144%;padding-bottom:2px;text-align:center;font-size:7.5pt;"><font style="font-family:inherit;font-size:7.5pt;"><br></font></div><div style="line-height:120%;padding-bottom:9px;text-align:left;font-size:4.5pt;"><font style="font-family:inherit;font-size:4.5pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:85.546875%;border-collapse:collapse;text-align:left;"><tr><td colspan="5"></td></tr><tr><td style="width:21%;"></td><td style="width:22%;"></td><td style="width:14%;"></td><td style="width:2%;"></td><td style="width:41%;"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:center;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Delaware</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:center;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">001-36384</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:center;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">20-8881738</font></div></td></tr><tr><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:5px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-top:2px;text-align:center;padding-left:5px;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">(State or other jurisdiction</font></div><div style="padding-bottom:2px;text-align:center;padding-left:5px;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">of incorporation)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:5px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-top:2px;text-align:center;padding-left:5px;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">(Commission</font></div><div style="padding-bottom:2px;text-align:center;padding-left:5px;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">File Number)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:5px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-top:2px;text-align:center;padding-left:5px;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">(IRS Employer</font></div><div style="padding-bottom:2px;text-align:center;padding-left:5px;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">Identification No.)</font></div></td></tr></table></div></div><div style="line-height:144%;padding-top:10px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">12181 Bluff Creek Drive, 4th Floor</font></div><div style="line-height:144%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Los Angeles, CA 90094</font></div><div style="line-height:144%;text-align:center;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">(Address of principal executive offices, including zip code)</font></div><div style="line-height:144%;padding-top:6px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">(310) 207-0272</font></div><div style="line-height:144%;text-align:center;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">(Registrant&#8217;s telephone number, including area code)</font></div><div style="line-height:144%;padding-top:6px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Not applicable</font></div><div style="line-height:144%;text-align:center;font-size:6pt;"><font style="font-family:inherit;font-size:6pt;font-weight:bold;">(Former name or former address, if changed since last report)</font></div><div style="line-height:144%;text-align:left;font-size:4.5pt;"><font style="font-family:inherit;font-size:4.5pt;"><br></font></div><div style="line-height:144%;text-align:center;font-size:7.5pt;"><font style="font-family:inherit;font-size:7.5pt;"><br></font></div><div style="line-height:144%;padding-top:6px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):</font></div><div style="line-height:120%;padding-bottom:9px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-left:4px;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:97.65625%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:3%;"></td><td style="width:80%;"></td><td style="width:17%;"></td></tr><tr><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#9744;</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#9744;</font></div></td><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#9744;</font></div></td><td colspan="2" style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></div></td></tr><tr><td style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#9744;</font></div></td><td colspan="2" style="vertical-align:middle;border-bottom:1px solid #cbcbcb;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:5px;border-left:1px solid #cbcbcb;border-right:1px solid #cbcbcb;border-top:1px solid #cbcbcb;"><div style="padding-bottom:2px;text-align:left;padding-left:5px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></div></td></tr></table></div></div><div style="line-height:144%;padding-top:4px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:144%;padding-top:6px;text-align:left;text-indent:22px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167; 230.405 of this chapter) or Rule&#160;12b-2&#160;of the Securities Exchange Act of 1934 (&#167;&#160;240.12b-2&#160;of this chapter).</font></div><div style="line-height:144%;padding-top:6px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Emerging growth company&#160;&#160;</font><font style="font-family:Wingdings;font-size:10pt;">x</font></div><div style="line-height:144%;padding-top:6px;text-align:left;text-indent:22px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section&#160;13(a) of the Exchange Act.&#160;&#160;</font><font style="font-family:Wingdings;font-size:10pt;">x</font></div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:173%;padding-bottom:8px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 8.01 Other Events.</font></div><div style="line-height:173%;padding-top:10px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Rubicon Project, Inc. (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Company</font><font style="font-family:inherit;font-size:10pt;">&#8221;) will hold its annual meeting of stockholders (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">2019 Annual Meeting</font><font style="font-family:inherit;font-size:10pt;">&#8221;) on May 15, 2019, at 12:00 p.m., Pacific Time, at the Company&#8217;s headquarters at 12181 Bluff Creek Drive, 4</font><font style="font-family:inherit;font-size:10pt;"><sup style="vertical-align:top;line-height:120%;font-size:7pt">th</sup></font><font style="font-family:inherit;font-size:10pt;">&#32;Floor, Playa Vista, CA 90094.</font></div><div style="line-height:173%;padding-top:10px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Because the date of the 2019 Annual Meeting has been changed by more than 30 days from the anniversary of the Company&#8217;s 2018 annual meeting of stockholders, the deadline for the submission of proposals by stockholders for inclusion in the Company&#8217;s proxy materials relating to the 2019 Annual Meeting in accordance with Rule 14a-8 under the Securities Exchange Act of 1934, as amended, will be the close of business on February 14, 2019, which the Company believes is a reasonable time before it expects to begin to print and send its proxy materials. Any proposal received after such date will be considered untimely.</font></div><div style="line-height:173%;padding-top:10px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In accordance with the Company&#8217;s Amended and Restated Bylaws (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Bylaws</font><font style="font-family:inherit;font-size:10pt;">&#8221;), stockholders who intend to nominate a person for election as a director or submit a proposal regarding any other matter of business at the 2019 Annual Meeting must deliver written notice of any proposed business or nomination to the Company&#8217;s Secretary at the Company&#8217;s principal executive offices, no later than the close of business on February 14, 2019 (which is 90 days prior to the date of the 2019 Annual Meeting). Any notice of proposed business or nomination must comply with the specific requirements set forth in the Company&#8217;s Bylaws in order to be considered at the 2019 Annual Meeting.</font></div><div style="line-height:173%;padding-top:10px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SIGNATURE</font></div><div style="line-height:251%;padding-top:16px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</font></div><div style="line-height:120%;padding-bottom:28px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:96.6796875%;border-collapse:collapse;text-align:left;"><tr><td colspan="4"></td></tr><tr><td style="width:7%;"></td><td style="width:40%;"></td><td style="width:6%;"></td><td style="width:47%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">THE RUBICON PROJECT, INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:25px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:25px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:25px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:25px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:1px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Date:</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">January 14, 2019</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:1px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">By:</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">/s/ Jonathan Feldman</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:1px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Jonathan Feldman</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Co-General Counsel and Secretary</font></div></td></tr></table></div></div><div style="line-height:144%;padding-top:4px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
</html>
[{"type": "8-K", "sequence": "1", "filename": "a8k01142019.htm", "description": "FORM 8-K", "secsgml_size_bytes": 28720}]
{"company-data": {"conformed-name": "RUBICON PROJECT, INC.", "cik": "0001595974", "assigned-sic": "7370", "irs-number": "208881738", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-36384", "film-number": "19525675"}, "business-address": {"street1": "12181 BLUFF CREEK DRIVE, 4TH FLOOR", "city": "LOS ANGELES", "state": "CA", "zip": "90094", "phone": "310-207-0272"}, "mail-address": {"street1": "12181 BLUFF CREEK DRIVE, 4TH FLOOR", "city": "LOS ANGELES", "state": "CA", "zip": "90094"}}
Document
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 OR 15(d)
of the Securities Exchange Act of 1934
January 14, 2019
Date of Report (Date of earliest event reported)
THE RUBICON PROJECT, INC.
(Exact name of registrant as specified in its charter)
Delaware
001-36384
20-8881738
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(IRS Employer
Identification No.)
12181 Bluff Creek Drive, 4th Floor
Los Angeles, CA 90094
(Address of principal executive offices, including zip code)
(310) 207-0272
(Registrant's telephone number, including area code)
Not applicable
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company
x
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
x
Item 8.01 Other Events.
The Rubicon Project, Inc. (the "
Company
") will hold its annual meeting of stockholders (the "
2019 Annual Meeting
") on May 15, 2019, at 12:00 p.m., Pacific Time, at the Company's headquarters at 12181 Bluff Creek Drive, 4
th
Floor, Playa Vista, CA 90094.
Because the date of the 2019 Annual Meeting has been changed by more than 30 days from the anniversary of the Company's 2018 annual meeting of stockholders, the deadline for the submission of proposals by stockholders for inclusion in the Company's proxy materials relating to the 2019 Annual Meeting in accordance with Rule 14a-8 under the Securities Exchange Act of 1934, as amended, will be the close of business on February 14, 2019, which the Company believes is a reasonable time before it expects to begin to print and send its proxy materials. Any proposal received after such date will be considered untimely.
In accordance with the Company's Amended and Restated Bylaws (the "
Bylaws
"), stockholders who intend to nominate a person for election as a director or submit a proposal regarding any other matter of business at the 2019 Annual Meeting must deliver written notice of any proposed business or nomination to the Company's Secretary at the Company's principal executive offices, no later than the close of business on February 14, 2019 (which is 90 days prior to the date of the 2019 Annual Meeting). Any notice of proposed business or nomination must comply with the specific requirements set forth in the Company's Bylaws in order to be considered at the 2019 Annual Meeting.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
THE RUBICON PROJECT, INC.
Date:
January 14, 2019
By:
/s/ Jonathan Feldman
Jonathan Feldman
Co-General Counsel and Secretary