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<div><a name="sC034EA576746070075D26AB28E405558"></a></div><div></div><div><br></div><div style="line-height:144%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">As filed with the Securities and Exchange Commission on May 3, 2019</font></div><div style="line-height:120%;padding-bottom:9px;text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Registration No. 333-</font></div><div style="line-height:120%;text-align:center;font-size:18pt;"><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:99.79716024340772%;border-collapse:collapse;text-align:left;"><tr><td colspan="4"></td></tr><tr><td style="width:33%;"></td><td style="width:33%;"></td><td style="width:33%;"></td><td style="width:1%;"></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:14px;padding-bottom:2px;padding-right:2px;border-top:3px double #000000;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">UNITED STATES SECURITIES AND EXCHANGE COMMISSION</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></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Washington, D.C. 20549</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></tr><tr><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><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;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;padding-left:4px;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">FORM S</font><font style="font-family:inherit;font-size:14pt;">&#8209;</font><font style="font-family:inherit;font-size:14pt;font-weight:bold;">8</font></div><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">REGISTRATION STATEMENT</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></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">UNDER</font></div><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;text-decoration:underline;">THE SECURITIES ACT OF 1933</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></tr><tr><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><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;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:6px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:18pt;"><font style="font-family:inherit;font-size:18pt;font-weight:bold;">LIMELIGHT NETWORKS, INC.</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></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(Exact name of Registrant as specified in its charter)</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></tr><tr><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:12px;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:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Delaware</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">20-1677033</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></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(State or other jurisdiction of</font></div><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">incorporation or organization)</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:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(I.R.S. Employer</font></div><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Identification Number)</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></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:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">222 South Mill Avenue, 8th</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;"><sup style="vertical-align:top;line-height:120%;font-size:7pt">&#160;</sup></font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Floor</font></div><div style="text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Tempe, Arizona 85281</font></div><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></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></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:6px;padding-right:2px;"><div style="padding-bottom:6px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(Address of principal executive offices)</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></tr><tr><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:10px;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:10px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">2013 EMPLOYEE STOCK PURCHASE PLAN, AS AMENDED</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></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(Full title of the plan)</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></tr><tr><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:9px;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:9px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="4" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Robert A. Lento</font></div><div style="text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">President, Chief Executive Officer and Director</font></div><div style="text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Limelight Networks, Inc.</font></div><div style="text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">222 South Mill Avenue, 8th</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;"><sup style="vertical-align:top;line-height:120%;font-size:7pt">&#160;</sup></font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Floor</font></div><div style="text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Tempe, Arizona 85281</font></div><div 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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:13px;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:top;padding-left:2px;padding-top:6px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Copy to:</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></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Mitzi Chang</font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Goodwin Procter LLP</font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">3 Embarcadero Center, 28</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;"><sup style="vertical-align:top;line-height:120%;font-size:7pt">th</sup></font><font 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style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:9px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="3" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:2px;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non&#8209;accelerated filer, a smaller reporting company or an emerging growth company.  See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer,&#8221; &#8220;smaller reporting company&#8221; and "emerging growth company" in Rule&#160;12b&#8209;2 of the Exchange Act.</font></div><div style="padding-bottom:2px;padding-top:2px;text-align:justify;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></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></tr></table></div></div><div style="line-height:210%;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:97.16024340770791%;border-collapse:collapse;text-align:left;"><tr><td colspan="4"></td></tr><tr><td style="width:30%;"></td><td style="width:38%;"></td><td style="width:4%;"></td><td style="width:28%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:9pt;">Large&#160;accelerated&#160;filer             </font><font style="font-family:Wingdings;font-size:10pt;">o</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;padding-top:2px;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:9pt;">Accelerated&#160;filer                   &#160;&#160;</font><font style="font-family:Wingdings;font-size:10pt;">&#254;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:9pt;">Non-accelerated&#160;filer&#160;             &#160;</font><font style="font-family:Wingdings;font-size:10pt;">o</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;padding-top:2px;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:9pt;">Smaller&#160;Reporting&#160;Company&#160;&#160;</font><font style="font-family:Wingdings;font-size:10pt;">o</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;padding-top:2px;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:9pt;">Emerging Growth Company&#160; &#160;</font><font style="font-family:Wingdings;font-size:10pt;">o</font></div></td></tr></table></div></div><div style="line-height:144%;padding-top:8px;text-align:left;padding-left:28px;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:9pt;">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 7(a)(2)(B) of the Securities Act. </font><font style="font-family:Wingdings;font-size:10pt;">o</font></div><div style="line-height:138%;text-align:left;padding-left:33px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:justify;text-indent:336px;font-size:7.5pt;"><font style="font-family:inherit;font-size:7.5pt;">&#160;&#160;&#160;&#160;</font></div></div><hr style="page-break-after:always"><div></div><div><br></div><div style="line-height:138%;padding-top:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:115%;padding-bottom:8px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">CALCULATION OF REGISTRATION FEE</font></div><div style="line-height:120%;text-align:center;font-size:9pt;"><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:99.59432048681542%;border-collapse:collapse;text-align:left;"><tr><td colspan="5"></td></tr><tr><td style="width:36%;"></td><td style="width:16%;"></td><td style="width:16%;"></td><td style="width:16%;"></td><td style="width:16%;"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-right:1px solid #000000;border-top:3px double #00000a;"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Title of Securities to be Registered</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;border-left:1px solid #000000;border-right:1px solid #000000;border-top:3px double #00000a;"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Amount to be</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Registered(1)</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;border-left:1px solid #000000;border-right:1px solid #000000;border-top:3px double #00000a;"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Proposed Maximum Offering Price Per Share</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;border-left:1px solid #000000;border-right:1px solid #000000;border-top:3px double #00000a;"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Proposed Maximum Aggregate Offering Price</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;border-left:1px solid #000000;border-right:1px solid #000000;border-top:3px double #00000a;"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Amount of </font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Registration Fee</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:3px double #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Common Stock, $0.001 par value per share, to be issued under the 2013 Employee Stock Purchase Plan, as amended</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">5,000,000</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;"><div style="padding-top:4px;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">$2.50</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">&#160;&#160;&#160;&#160;&#160;$12,500,000(2)</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;"><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">$1,515.00</font></div></td></tr></table></div></div><table cellpadding="0" cellspacing="0" style="padding-top:8px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:42px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:9pt;padding-left:0px;"><font style="font-family:inherit;font-size:9pt;">(1)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Pursuant to Rule 416 under the Securities Act of 1933, as amended, this Registration Statement shall also cover any additional shares of the Registrant's Common Stock that become issuable under the Registrant's 2013 Employee Stock Purchase Plan, as amended, by reason of any stock dividend, stock split, recapitalization or any similar transaction effected without the Registrant's receipt of consideration.  </font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:8px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:42px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:9pt;padding-left:0px;"><font style="font-family:inherit;font-size:9pt;">(2)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;">Estimated in accordance with Rule 457(h) and (c) solely for the purpose of calculating the registration fee on the basis of 85% of $2.94, the average of the high and low prices of the Registrant&#8217;s Common Stock as reported on the NASDAQ Global Select Market on April 26, 2019.  Pursuant to the 2013 Employee Stock Purchase Plan, as amended, the purchase price of a share of the Registrant&#8217;s Common Stock reserved for issuance thereunder will be an amount equal to 85% of the lower of the fair market value per share of the Registrant&#8217;s Common Stock on the first trading day of the offering period or on the exercise date.</font></div></td></tr></table><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div></div><hr style="page-break-after:always"><div><a name="sD2236485F8011A3258866AB28E5742F4"></a></div><div></div><div><br></div><div style="line-height:120%;text-align:center;-sec-extract:summary;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">REGISTRATION OF ADDITIONAL SECURITIES </font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">PURSUANT TO GENERAL INSTRUCTION E</font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">This Registration Statement registers additional shares of Common Stock of Limelight Networks, Inc. (the &#8220;Registrant&#8221;) to be issued pursuant to the Registrant&#8217;s 2013 Employee Stock Purchase Plan, as amended. Accordingly, the contents of the previous Registration Statement on Form S-8 filed by the Registrant with the Securities and Exchange Commission (the &#8220;Commission&#8221;) on August 12, 2013 (File No. 333-190572) are incorporated by reference in this Registration Statement pursuant to General Instruction E of Form S-8.</font></div><div style="line-height:120%;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">PART II</font></div><div style="line-height:120%;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 3.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Incorporation of Documents by Reference.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The following documents, which have been filed by the Registrant with the Commission, are hereby incorporated by reference in this Registration Statement on Form S-8 (the &#8220;Registration Statement&#8221;) (other than portions of these documents that are furnished under applicable Commission rules rather than filed and exhibits furnished in connection with such items):</font></div><table cellpadding="0" cellspacing="0" style="padding-top:16px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:72px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:10pt;padding-left:48px;"><font style="font-family:inherit;font-size:10pt;">(a)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Registrant&#8217;s Annual Report on Form 10-K for the year ended December 31, 2018 (the &#8220;Annual Report&#8221;), as filed with the Commission on February 1, 2019;</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:16px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:72px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:10pt;padding-left:48px;"><font style="font-family:inherit;font-size:10pt;">(b)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">All other reports filed by the Registrant pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;) since the end of the fiscal year covered by the Annual Report; and</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-top:16px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:72px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:10pt;padding-left:48px;"><font style="font-family:inherit;font-size:10pt;">(c)</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The description of the Registrant&#8217;s Common Stock contained in the Registrant&#8217;s Registration Statement on Form&#160;8-A (File No. 001-33508), as filed with the Commission on May 30, 2007 pursuant to Section&#160;12(b) of the Exchange Act and as declared effective on June 7, 2007, including any amendment or report filed for the purpose of updating such description.</font></div></td></tr></table><div style="line-height:120%;padding-top:10px;text-align:justify;text-indent:33px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">All documents filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act on or after the date of this Registration Statement and prior to the filing of a post-effective amendment to this Registration Statement that indicates that all securities offered have been sold or that deregisters all securities then remaining unsold shall be deemed to be incorporated by reference in this Registration Statement and to be part hereof from the date of filing of such documents; </font><font style="font-family:inherit;font-size:10pt;font-style:italic;">provided</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;font-style:italic;">however</font><font style="font-family:inherit;font-size:10pt;">, that documents or information deemed to have been furnished and not filed in accordance with the rules of the Commission shall not be deemed incorporated by reference in this Registration Statement. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any subsequently filed document which also is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement. </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 8.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Exhibits.</font></div><div style="line-height:120%;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:99.89949748743719%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:14%;"></td><td style="width:86%;"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Exhibit Number</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="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Description</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.1*</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="text-decoration:underline;color:#0000FF;-sec-extract:exhibit;" href="http://www.sec.gov/Archives/edgar/data/1391127/000095015307001260/p73585a3exv4w1.htm"><font style="font-family:inherit;font-size:10pt;">Specimen Common Stock certificate of the Registrant</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#s0EA9E184765F35C8E7706AB28EC3E74C"><font style="font-family:inherit;font-size:10pt;">Opinion of Goodwin Procter LLP</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">10.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="text-decoration:underline;color:#0000FF;-sec-extract:exhibit;" href="amendmentno1to2013espp.htm"><font style="font-family:inherit;font-size:10pt;">Amendment No. 1 to the 2013 Employee Stock Purchase Plan</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">23.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#s22206E48C2C47D3318336AB28EF4A355"><font style="font-family:inherit;font-size:10pt;">Consent of Ernst &amp; Young LLP, Independent Registered Public Accounting Firm</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">23.2</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#s0EA9E184765F35C8E7706AB28EC3E74C"><font style="font-family:inherit;font-size:10pt;">Consent of Goodwin Procter LLP (contained in Exhibit 5.1 hereto)</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">24.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#sD00E6BBB6A0003E7BB836AB28E7BAE6F"><font style="font-family:inherit;font-size:10pt;">Power of Attorney (contained on signature page hereto)</font></a><font style="font-family:inherit;font-size:10pt;">.</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:18px;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:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;text-indent:144px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">&#160;&#160;&#160;&#160;</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:41px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:10pt;padding-left:0px;"><font style="font-family:inherit;font-size:10pt;">*</font></div></td><td style="vertical-align:top;padding-left:1.3333333333333333px;"><div style="line-height:120%;text-align:left;font-size:10pt;text-indent:-1.3333333333333333px;"><font style="font-family:inherit;font-size:10pt;">Incorporated by reference to exhibits filed with the Registrant&#8217;s Registration Statement on Form&#160;S&#8209;1, as amended (Registration No. 333-141516), as declared effective on June 7, 2007.</font></div></td></tr></table><div><br></div><div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></div><hr style="page-break-after:always"><div><a name="sD00E6BBB6A0003E7BB836AB28E7BAE6F"></a></div><div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SIGNATURES</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Tempe, State of Arizona, on this 3rd day of May 2019.</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:336px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">LIMELIGHT NETWORKS, INC.</font></div><div style="line-height:120%;text-align:justify;padding-left:336px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:336px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">By:  </font><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Robert A. Lento&#160;&#160;&#160;&#160;</font></div><div style="line-height:120%;text-align:left;padding-left:360px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Robert A. Lento </font></div><div style="line-height:120%;text-align:left;padding-left:360px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">President, Chief Executive Officer and Director</font></div><div style="line-height:120%;text-align:left;padding-left:360px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">POWER OF ATTORNEY</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert A. Lento and Sajid Malhotra, jointly and severally, as his or her attorneys-in-fact, with full power of substitution in each, for him in any and all capacities to sign any amendments to this Registration Statement on Form S-8, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his substitutes, may do or cause to be done by virtue hereof.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the date indicated.</font></div><div style="line-height:120%;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:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:32%;"></td><td style="width:53%;"></td><td style="width:15%;"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Signature</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="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Title</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="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Date</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Robert A. Lento     </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Robert A. Lento</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">President, Chief Executive Officer and Director</font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Principal Executive Officer)</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Sajid Malhotra   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Sajid Malhotra</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Chief Financial Officer </font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Principal Financial Officer)</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Daniel R. Boncel   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Daniel R. Boncel</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Vice President, Finance</font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Principal Accounting Officer)</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Walter D. Amaral   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Walter D. Amaral </font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Non-Executive Chairman of the Board and Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Doug Bewsher   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Doug Bewsher</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Marc DeBevoise   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Marc DeBevoise</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Jeffrey T. Fisher   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Jeffrey T. Fisher</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Scott Genereux   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Scott Genereux</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Patricia Parra Hadden   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;Patricia Parra Hadden</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ David C. Peterschmidt   </font></div><div style="text-align:justify;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;David C. Peterschmidt</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:12px;text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></div><hr style="page-break-after:always"><div><a name="s1433375420D8B46312F96AB28EBBD1D1"></a></div><div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">INDEX TO EXHIBITS</font></div><div style="line-height:120%;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:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:14%;"></td><td style="width:86%;"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Exhibit Number</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="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Description</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.1*</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="http://www.sec.gov/Archives/edgar/data/1391127/000095015307001260/p73585a3exv4w1.htm"><font style="font-family:inherit;font-size:10pt;">Specimen Common Stock certificate of the Registrant</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#s0EA9E184765F35C8E7706AB28EC3E74C"><font style="font-family:inherit;font-size:10pt;">Opinion of Goodwin Procter LLP</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">10.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="amendmentno1to2013espp.htm"><font style="font-family:inherit;font-size:10pt;">Amendment No. 1 to the 2013 Employee Stock Purchase Plan</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">23.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#s22206E48C2C47D3318336AB28EF4A355"><font style="font-family:inherit;font-size:10pt;">Consent of Ernst &amp; Young LLP, Independent Registered Public Accounting Firm</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">23.2</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#s0EA9E184765F35C8E7706AB28EC3E74C"><font style="font-family:inherit;font-size:10pt;">Consent of Goodwin Procter LLP (contained in Exhibit 5.1 hereto)</font></a><font style="font-family:inherit;font-size:10pt;">.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">24.1</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="#sD00E6BBB6A0003E7BB836AB28E7BAE6F"><font style="font-family:inherit;font-size:10pt;">Power of Attorney (contained on signature page hereto)</font></a><font style="font-family:inherit;font-size:10pt;">.</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:18px;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:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;text-indent:144px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">&#160;&#160;&#160;&#160;</font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:41px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:10pt;padding-left:0px;"><font style="font-family:inherit;font-size:10pt;">*</font></div></td><td style="vertical-align:top;padding-left:1.3333333333333333px;"><div style="line-height:120%;text-align:left;font-size:10pt;text-indent:-1.3333333333333333px;"><font style="font-family:inherit;font-size:10pt;">Incorporated by reference to exhibits filed with the Registrant&#8217;s Registration Statement on Form&#160;S&#8209;1, as amended (Registration No. 333-141516), as declared effective on June 7, 2007.</font></div></td></tr></table><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></div><hr style="page-break-after:always"><div><a name="s0EA9E184765F35C8E7706AB28EC3E74C"></a></div><div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;padding-top:16px;text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Exhibit 5.1</font></div><div style="line-height:120%;text-align:center;padding-left:14px;text-indent:-15px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Limelight Networks, Inc.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">222 South Mill Avenue, 8th Floor</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Tempe, Arizona 85281</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:120%;font-size:10pt;padding-left:0px;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Re:</font></div></td><td style="vertical-align:top;"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Registration Statement on Form S-8</font></div></td></tr></table><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Ladies and Gentlemen:</font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We have acted as counsel to you in connection with your filing of a Registration Statement on Form S-8 (the &#8220;Registration Statement&#8221;) pursuant to the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;), on or about the date hereof relating to an aggregate of 5,000,000 shares (the &#8220;Shares&#8221;) of Common Stock, $0.001 par value per share (the &#8220;Common Stock&#8221;), of Limelight Networks, Inc., a Delaware corporation (the &#8220;Company&#8221;), that may be issued pursuant to the Company&#8217;s 2013 Employee Stock Purchase Plan, as amended (the &#8220;Plan&#8221;).</font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We have reviewed such documents and made such examination of law as we have deemed appropriate to give the opinions set forth below.  We have relied, without independent verification, on certificates of public officials and, as to matters of fact material to the opinion set forth below, on certificates of officers of the Company.</font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The opinion set forth below is limited to the Delaware General Corporation Law.</font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">For purposes of the opinion set forth below, we have assumed that no event occurs that causes the number of authorized shares of Common Stock available for issuance by the Company to be less than the number of then unissued Shares.</font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Based on the foregoing, we are of the opinion that the Shares have been duly authorized and, upon issuance and delivery against payment therefor in accordance with the terms of the Plan, will be validly issued, fully paid and nonassessable. </font></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We hereby consent to the inclusion of this opinion as Exhibit 5.1 to the Registration Statement.  In giving our consent, we do not admit that we are in the category of persons whose consent is required under Section&#160;7 of the Securities Act or the rules and regulations thereunder.</font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Very truly yours,</font></div><div style="line-height:120%;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">GOODWIN PROCTER LLP</font></div><div style="line-height:120%;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">/s/ GOODWIN PROCTER LLP</font></div><div style="line-height:120%;padding-top:16px;text-align:left;padding-left:312px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></div><hr style="page-break-after:always"><div><a name="s22206E48C2C47D3318336AB28EF4A355"></a></div><div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Exhibit</font><font style="font-family:inherit;font-size:10pt;">&#32;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">23.1</font></div><div style="line-height:120%;padding-bottom:16px;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Consent of Independent Registered Public Accounting Firm </font></div><div style="line-height:120%;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">We consent to the incorporation by reference in the Registration Statement (Form&#160;S-8) pertaining to the 2013 Employee Stock Purchase Plan, As Amended, of Limelight Networks, Inc. of our reports dated January 31, 2019, with respect to the consolidated financial statements and schedule of Limelight Networks, Inc., and the effectiveness of internal control over financial reporting of Limelight Networks, Inc. included in its Annual Report (Form 10-K) for the year ended December&#160;31, 2018, filed with the Securities and Exchange Commission. </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">/s/ Ernst &amp; Young LLP</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Phoenix, Arizona </font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">May 3, 2019</font></div><div><br></div><div><div style="line-height:120%;text-align:justify;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div></div>	</body>
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Document
As filed with the Securities and Exchange Commission on May 3, 2019
Registration No. 333-
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S
‑
8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
LIMELIGHT NETWORKS, INC.
(Exact name of Registrant as specified in its charter)
Delaware
20-1677033
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification Number)
222 South Mill Avenue, 8th
Floor
Tempe, Arizona 85281
(Address of principal executive offices)
2013 EMPLOYEE STOCK PURCHASE PLAN, AS AMENDED
(Full title of the plan)
Robert A. Lento
President, Chief Executive Officer and Director
Limelight Networks, Inc.
222 South Mill Avenue, 8th
Floor
Tempe, Arizona 85281
(602) 850-5000
(Name, address and telephone number, including area code, of agent for service)
Copy to:
Mitzi Chang
Goodwin Procter LLP
3 Embarcadero Center, 28
th
Floor
San Francisco, CA 94111
(415) 733-6000
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non‑accelerated filer, a smaller reporting company or an emerging growth company.  See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b‑2 of the Exchange Act.
Large accelerated filer
o
Accelerated filer
þ
Non-accelerated filer
o
Smaller Reporting Company
o
Emerging Growth Company
o
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 7(a)(2)(B) of the Securities Act.
o
CALCULATION OF REGISTRATION FEE
Title of Securities to be Registered
Amount to be
Registered(1)
Proposed Maximum Offering Price Per Share
Proposed Maximum Aggregate Offering Price
Amount of
Registration Fee
Common Stock, $0.001 par value per share, to be issued under the 2013 Employee Stock Purchase Plan, as amended
5,000,000
$2.50
$12,500,000(2)
$1,515.00
(1)
Pursuant to Rule 416 under the Securities Act of 1933, as amended, this Registration Statement shall also cover any additional shares of the Registrant's Common Stock that become issuable under the Registrant's 2013 Employee Stock Purchase Plan, as amended, by reason of any stock dividend, stock split, recapitalization or any similar transaction effected without the Registrant's receipt of consideration.
(2)
Estimated in accordance with Rule 457(h) and (c) solely for the purpose of calculating the registration fee on the basis of 85% of $2.94, the average of the high and low prices of the Registrant's Common Stock as reported on the NASDAQ Global Select Market on April 26, 2019.  Pursuant to the 2013 Employee Stock Purchase Plan, as amended, the purchase price of a share of the Registrant's Common Stock reserved for issuance thereunder will be an amount equal to 85% of the lower of the fair market value per share of the Registrant's Common Stock on the first trading day of the offering period or on the exercise date.
REGISTRATION OF ADDITIONAL SECURITIES
PURSUANT TO GENERAL INSTRUCTION E
This Registration Statement registers additional shares of Common Stock of Limelight Networks, Inc. (the "Registrant") to be issued pursuant to the Registrant's 2013 Employee Stock Purchase Plan, as amended. Accordingly, the contents of the previous Registration Statement on Form S-8 filed by the Registrant with the Securities and Exchange Commission (the "Commission") on August 12, 2013 (File No. 333-190572) are incorporated by reference in this Registration Statement pursuant to General Instruction E of Form S-8.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3.
Incorporation of Documents by Reference.
The following documents, which have been filed by the Registrant with the Commission, are hereby incorporated by reference in this Registration Statement on Form S-8 (the "Registration Statement") (other than portions of these documents that are furnished under applicable Commission rules rather than filed and exhibits furnished in connection with such items):
(a)
The Registrant's Annual Report on Form 10-K for the year ended December 31, 2018 (the "Annual Report"), as filed with the Commission on February 1, 2019;
(b)
All other reports filed by the Registrant pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act") since the end of the fiscal year covered by the Annual Report; and
(c)
The description of the Registrant's Common Stock contained in the Registrant's Registration Statement on Form 8-A (File No. 001-33508), as filed with the Commission on May 30, 2007 pursuant to Section 12(b) of the Exchange Act and as declared effective on June 7, 2007, including any amendment or report filed for the purpose of updating such description.
All documents filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act on or after the date of this Registration Statement and prior to the filing of a post-effective amendment to this Registration Statement that indicates that all securities offered have been sold or that deregisters all securities then remaining unsold shall be deemed to be incorporated by reference in this Registration Statement and to be part hereof from the date of filing of such documents;
provided
,
however
, that documents or information deemed to have been furnished and not filed in accordance with the rules of the Commission shall not be deemed incorporated by reference in this Registration Statement. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any subsequently filed document which also is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.
Item 8.
Exhibits.
Exhibit Number
Description
4.1*
Specimen Common Stock certificate of the Registrant
.
5.1
Opinion of Goodwin Procter LLP
.
10.1
Amendment No. 1 to the 2013 Employee Stock Purchase Plan
.
23.1
Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm
.
23.2
Consent of Goodwin Procter LLP (contained in Exhibit 5.1 hereto)
.
24.1
Power of Attorney (contained on signature page hereto)
.
*
Incorporated by reference to exhibits filed with the Registrant's Registration Statement on Form S‑1, as amended (Registration No. 333-141516), as declared effective on June 7, 2007.
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Tempe, State of Arizona, on this 3rd day of May 2019.
LIMELIGHT NETWORKS, INC.
By:
/s/ Robert A. Lento
Robert A. Lento
President, Chief Executive Officer and Director
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert A. Lento and Sajid Malhotra, jointly and severally, as his or her attorneys-in-fact, with full power of substitution in each, for him in any and all capacities to sign any amendments to this Registration Statement on Form S-8, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his substitutes, may do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the date indicated.
Signature
Title
Date
/s/ Robert A. Lento
Robert A. Lento
President, Chief Executive Officer and Director
(Principal Executive Officer)
May 3, 2019
/s/ Sajid Malhotra
Sajid Malhotra
Chief Financial Officer
(Principal Financial Officer)
May 3, 2019
/s/ Daniel R. Boncel
Daniel R. Boncel
Vice President, Finance
(Principal Accounting Officer)
May 3, 2019
/s/ Walter D. Amaral
Walter D. Amaral
Non-Executive Chairman of the Board and Director
May 3, 2019
/s/ Doug Bewsher
Doug Bewsher
Director
May 3, 2019
/s/ Marc DeBevoise
Marc DeBevoise
Director
May 3, 2019
/s/ Jeffrey T. Fisher
Jeffrey T. Fisher
Director
May 3, 2019
/s/ Scott Genereux
Scott Genereux
Director
May 3, 2019
/s/ Patricia Parra Hadden
Patricia Parra Hadden
Director
May 3, 2019
/s/ David C. Peterschmidt
David C. Peterschmidt
Director
May 3, 2019
INDEX TO EXHIBITS
Exhibit Number
Description
4.1*
Specimen Common Stock certificate of the Registrant
.
5.1
Opinion of Goodwin Procter LLP
.
10.1
Amendment No. 1 to the 2013 Employee Stock Purchase Plan
.
23.1
Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm
.
23.2
Consent of Goodwin Procter LLP (contained in Exhibit 5.1 hereto)
.
24.1
Power of Attorney (contained on signature page hereto)
.
*
Incorporated by reference to exhibits filed with the Registrant's Registration Statement on Form S‑1, as amended (Registration No. 333-141516), as declared effective on June 7, 2007.
Exhibit 5.1
May 3, 2019
Limelight Networks, Inc.
222 South Mill Avenue, 8th Floor
Tempe, Arizona 85281
Re:
Registration Statement on Form S-8
Ladies and Gentlemen:
We have acted as counsel to you in connection with your filing of a Registration Statement on Form S-8 (the "Registration Statement") pursuant to the Securities Act of 1933, as amended (the "Securities Act"), on or about the date hereof relating to an aggregate of 5,000,000 shares (the "Shares") of Common Stock, $0.001 par value per share (the "Common Stock"), of Limelight Networks, Inc., a Delaware corporation (the "Company"), that may be issued pursuant to the Company's 2013 Employee Stock Purchase Plan, as amended (the "Plan").
We have reviewed such documents and made such examination of law as we have deemed appropriate to give the opinions set forth below.  We have relied, without independent verification, on certificates of public officials and, as to matters of fact material to the opinion set forth below, on certificates of officers of the Company.
The opinion set forth below is limited to the Delaware General Corporation Law.
For purposes of the opinion set forth below, we have assumed that no event occurs that causes the number of authorized shares of Common Stock available for issuance by the Company to be less than the number of then unissued Shares.
Based on the foregoing, we are of the opinion that the Shares have been duly authorized and, upon issuance and delivery against payment therefor in accordance with the terms of the Plan, will be validly issued, fully paid and nonassessable.
We hereby consent to the inclusion of this opinion as Exhibit 5.1 to the Registration Statement.  In giving our consent, we do not admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations thereunder.
Very truly yours,
GOODWIN PROCTER LLP
/s/ GOODWIN PROCTER LLP
Exhibit
23.1
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the 2013 Employee Stock Purchase Plan, As Amended, of Limelight Networks, Inc. of our reports dated January 31, 2019, with respect to the consolidated financial statements and schedule of Limelight Networks, Inc., and the effectiveness of internal control over financial reporting of Limelight Networks, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2018, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
Phoenix, Arizona
May 3, 2019