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<div><a name="s2E7074E9305CFA14F4AC498D858318F4"></a></div><div></div><div><br></div><div style="line-height:120%;text-align:center;font-size:20pt;"><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:94.25925925925925%;border-collapse:collapse;text-align:left;"><tr><td colspan="11"></td></tr><tr><td style="width:31%;"></td><td style="width:6%;"></td><td style="width:11%;"></td><td style="width:5%;"></td><td style="width:1%;"></td><td style="width:13%;"></td><td style="width:1%;"></td><td style="width:15%;"></td><td style="width:15%;"></td><td style="width:1%;"></td><td style="width:1%;"></td></tr><tr><td colspan="11" style="vertical-align:top;border-bottom:1px solid #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;padding-bottom:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">As filed with the Securities and Exchange Commission on February 23, 2017</font></div><div style="text-align:right;padding-bottom:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Registration No. 333-                                              </font></div></td></tr><tr><td colspan="11" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #00000a;"><div style="padding-top:5px;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">UNITED STATES</font></div><div style="padding-top:5px;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></div></td></tr><tr><td colspan="11" 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;">Washington, D.C. 20549</font></div></td></tr><tr><td colspan="11" 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 colspan="11" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:15pt;"><font style="font-family:inherit;font-size:15pt;font-weight:bold;">FORM S&#8209;8</font></div></td></tr><tr><td colspan="11" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:13pt;"><font style="font-family:inherit;font-size:13pt;font-weight:bold;">REGISTRATION STATEMENT</font></div></td></tr><tr><td colspan="11" 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-style:italic;font-weight:bold;">UNDER </font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-style:italic;font-weight:bold;">THE SECURITIES ACT OF 1933</font></div></td></tr><tr><td colspan="11" 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 colspan="11" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:20pt;"><font style="font-family:inherit;font-size:20pt;font-weight:bold;">A10 NETWORKS, INC.</font></div></td></tr><tr><td colspan="11" style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:8px;padding-right:2px;"><div style="padding-bottom:8px;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></td></tr><tr><td colspan="11" 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: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;">Delaware</font></div></td><td colspan="5" 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="5" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">20-1446869</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:8px;padding-right:2px;"><div style="padding-bottom:8px;text-align:center;font-size:7pt;"><font style="font-family:inherit;font-size:7pt;font-weight:bold;">(State or other jurisdiction of <br>incorporation or organization)</font></div></td><td colspan="5" 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="5" style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:8px;padding-right:2px;"><div style="padding-bottom:8px;text-align:center;font-size:7pt;"><font style="font-family:inherit;font-size:7pt;font-weight:bold;">(I.R.S. Employer <br>Identification No.)</font></div></td></tr><tr><td colspan="11" style="vertical-align:bottom;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;">3 West Plumeria Drive</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">San Jose, CA 95134</font></div></td></tr><tr><td colspan="11" style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:8px;padding-right:2px;"><div style="padding-bottom:8px;text-align:center;font-size:7pt;"><font style="font-family:inherit;font-size:7pt;font-weight:bold;">(Address of principal executive offices, including zip code)</font></div></td></tr><tr><td colspan="11" 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 colspan="11" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Amended and Restated 2014 Equity Incentive Plan</font></div><div style="text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div></td></tr><tr><td colspan="11" style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:8px;padding-right:2px;"><div style="padding-bottom:8px;text-align:center;font-size:7pt;"><font style="font-family:inherit;font-size:7pt;font-weight:bold;">(Full title of the plan)</font></div></td></tr><tr><td colspan="11" 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 colspan="11" 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;">Lee Chen</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">President and Chief Executive Officer </font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">A10 Networks, Inc. </font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">3 West Plumeria Drive</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">San Jose, CA 95134</font></div><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(408) 325-8668</font></div></td></tr><tr><td colspan="11" style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:8px;padding-right:2px;"><div style="padding-bottom:8px;text-align:center;font-size:7pt;"><font style="font-family:inherit;font-size:7pt;font-weight:bold;">(Name, address and telephone number, including area code, of agent for service)</font></div></td></tr><tr><td colspan="11" 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: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;"><br></font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Herbert P. Fockler</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Mark B. Baudler</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Wilson Sonsini Goodrich &amp; Rosati</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Professional Corporation</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">650 Page Mill Road</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Palo Alto, CA 94304</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">(650) 493-9300</font></div></td><td colspan="5" 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-style:italic;">Copies to:</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br></font></div></td><td colspan="5" 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;"><br></font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Robert Cochran</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Executive Vice President,</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">Legal and Corporate Collaboration</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">A10 Networks, Inc.</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">3 West Plumeria Drive</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">San Jose, CA 95134</font></div><div style="text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;">(408) 325-8668</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:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></td><td colspan="8" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:30px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="11" 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 colspan="11" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer&#8221; and &#8220;smaller reporting company&#8221; in Rule&#160;12b-2 of the Exchange Act (Check one).</font></div></td></tr><tr><td colspan="5" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:4px;padding-left:48px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Large accelerated filer </font><font style="font-family:Wingdings;font-size:8pt;">o</font><font style="font-family:inherit;font-size:8pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;<br>Non-accelerated filer   </font><font style="font-family:Wingdings;font-size:8pt;">o</font><font style="font-family:inherit;font-size:8pt;">&#160;&#160;&#160;&#160;(Do not check if a smaller reporting company)</font></div></td><td colspan="6" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;">Accelerated filer                   </font><font style="font-family:Wingdings;font-size:8pt;">x</font><font style="font-family:inherit;font-size:8pt;">&#160;&#160;&#160;<br>Smaller reporting company  </font><font style="font-family:Wingdings;font-size:8pt;">o</font></div></td></tr></table></div></div><div><br></div><div></div><hr style="page-break-after:always"><div></div><div><br></div><div style="line-height:115%;padding-top:16px;text-align:center;padding-left:0px;text-indent:0px;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:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="9"></td></tr><tr><td style="width:41%;"></td><td style="width:10%;"></td><td style="width:4%;"></td><td style="width:1%;"></td><td style="width:12%;"></td><td style="width:1%;"></td><td style="width:16%;"></td><td style="width:14%;"></td><td style="width:1%;"></td></tr><tr><td colspan="9" style="vertical-align:top;border-bottom:1px solid #00000a;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;font-weight:bold;">CALCULATION OF REGISTRATION FEE</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:1px solid #00000a;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Title&#160;of Securities <br>to be Registered</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:1px solid #00000a;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Proposed <br>Maximum Amount <br>to be <br>Registered (1)</font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:1px solid #00000a;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Proposed <br>Maximum <br>Offering Price <br>per Share</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:1px solid #00000a;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Aggregate <br>Offering Price</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-top:1px solid #00000a;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Amount of <br>Registration Fee</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;"><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;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Common Stock, par value $0.00001 per share, reserved for issuance pursuant to the Amended and Restated 2014 Equity Incentive Plan   </font></div></td><td colspan="2" style="vertical-align:top;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;3,394,376 (2)</font></div></td><td colspan="3" style="vertical-align:top;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;$ 9.55 (3)</font></div></td><td style="vertical-align:top;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;$ 32,416,290.80</font></div></td><td style="vertical-align:top;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-top:3px double #000000;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;$ 3,757.05</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;"><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;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">TOTAL</font></div></td><td colspan="2" style="vertical-align:top;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3,394,376</font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #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;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double #000000;border-top:3px double #000000;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;$ 32,416,290.80</font></div></td><td style="vertical-align:top;border-bottom:1px solid #00000a;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-left:3px double #000000;border-right:3px double 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style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #00000a;"><div style="overflow:hidden;height:22px;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;border-top:1px solid #00000a;"><div style="overflow:hidden;height:22px;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;border-top:1px solid #00000a;"><div style="overflow:hidden;height:22px;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;border-top:1px solid #00000a;"><div style="overflow:hidden;height:22px;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;border-top:1px solid #00000a;"><div style="overflow:hidden;height:22px;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;border-top:1px solid #00000a;"><div style="overflow:hidden;height:22px;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:22px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td colspan="8" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:8px;padding-left:33px;text-indent:-34px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(1)   Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Securities Act</font><font style="font-family:inherit;font-size:10pt;">&#8221;), this registration statement shall also cover any additional securities that may be necessary to adjust the number of shares reserved for issuance pursuant to the Registrant&#8217;s Amended and Restated 2014 Equity Incentive Plan (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">2014 Plan</font><font style="font-family:inherit;font-size:10pt;">&#8221;) by reason of any stock split, stock dividend or similar adjustment effected without the Registrant&#8217;s receipt of consideration that results in an increase in the number of outstanding shares of the Registrant&#8217;s common stock. </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="8" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:4px;text-align:left;padding-left:33px;text-indent:-34px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(2)   Reflects an automatic annual increase of 3,394,376 on January 1, 2017 to the number of shares of Registrant&#8217;s Common Stock reserved for issuance under the 2014 Plan, which annual increase is provided for in the 2014 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="8" style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:4px;text-align:left;padding-left:33px;text-indent:-34px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(3)   Estimated in accordance with paragraphs (c) and (h) of Rule 457 under the Securities Act solely for the purpose of calculating the registration fee on the basis of $9.55 per share, which represents the average of the high and low price per share of the Registrant&#8217;s common stock on February 17, 2017 as reported on the New York Stock Exchange.</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:115%;padding-top:16px;text-align:left;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br></font></div><div><br></div><div></div><hr style="page-break-after:always"><div><a name="s49495317B9EF01A6FD02498D879641CB"></a></div><div></div><div><br></div><div style="line-height:120%;text-align:center;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:12px;text-align:left;text-indent:22px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">This Registration Statement on Form S-8 (the &#8220;Registration Statement&#8221;) registers additional shares of Common Stock of A10 Networks, Inc. (the &#8220;Registrant&#8221;) to be issued pursuant to the Registrant&#8217;s Amended and Restated 2014 Equity Incentive Plan (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">2014 Plan</font><font style="font-family:inherit;font-size:10pt;">&#8221;). The number of shares of the Registrant&#8217;s common stock available for grant and issuance under the 2014 Plan is subject to an annual increase on the first day of each fiscal year starting on January&#160;1, 2015 by an amount equal to the least of (i)&#160;8,000,000 Shares, (ii)&#160;five percent (5%) of the outstanding Shares (as defined in the 2014 Plan) on the last day of the immediately preceding fiscal year of the Registrant or (iii)&#160;such number of Shares determined by the board of directors of the Registrant.</font></div><div style="line-height:120%;padding-top:16px;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">On January&#160;1, 2017, the number of shares of the Registrant&#8217;s common stock available for grant and issuance under the 2014 Plan increased by 3,394,376 shares.  These additional shares of Common Stock have become reserved for issuance as a result of the operation of the &#8220;evergreen&#8221; provision of the 2014 Plan.  Accordingly, the content of the Registrant&#8217;s Registration Statement on Form S-8 (No. 333-194719) filed with the Securities and Exchange Commission (the &#8220;Commission&#8221;) on March&#160;21, 2014, as amended by the Post-Effective Amendment No. 1 to the Registration Statement on Form S-8 filed with the Commission on June&#160;23, 2014, is incorporated herein by reference pursuant to General Instruction E of Form S-8.</font></div><div><br></div><div><div style="line-height:120%;text-align:left;font-size:7.5pt;"><font style="font-family:inherit;font-size:7.5pt;"><br></font></div></div><hr style="page-break-after:always"><div></div><div><br></div><div style="line-height:120%;padding-top:32px;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%;padding-top:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 3.&#160;&#160;&#160;&#160;Incorporation of Documents by Reference. </font></div><div style="line-height:120%;padding-top:6px;text-align:left;text-indent:22px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Registrant hereby incorporates by reference in this Registration Statement the following documents and information previously filed with the Commission: </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:98.0788675429727%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:3%;"></td><td style="width:4%;"></td><td style="width:93%;"></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:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-left:18px;text-indent:-18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(1)The Registrant&#8217;s Annual Report on Form 10-K filed with the Commission on February 23, 2017 pursuant to Section 13(a) of the Securities Exchange Act of 1934, as amended (the &#8220;</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Exchange Act</font><font style="font-family:inherit;font-size:10pt;">&#8221;); 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</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 into this Registration Statement. </font></div><div style="line-height:120%;padding-top:12px;text-align:left;text-indent:22px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">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 other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. 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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;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="5" style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Incorporated by Reference Herein</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Exhibit 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><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Description</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Filed Herewith</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Form</font></div></td><td 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style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Consent of Deloitte &amp; Touche LLP, Independent Registered Public Accounting Firm</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</font></div></td><td 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style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Consent of Wilson Sonsini Goodrich &amp; Rosati, Professional Corporation (see Exhibit 5.1)</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</font></div></td><td 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style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Power of Attorney (contained on signature page hereto)</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</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="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 style="vertical-align:middle;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">99.1</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:middle;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Amended and Restated 2014 Equity Incentive Plan and forms of agreement thereunder</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: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;">10-K</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;">001-36343</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;">10.4</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;">2/29/2016</font></div></td></tr></table></div></div><div><br></div><div></div><hr style="page-break-after:always"><div></div><div><br></div><div style="line-height:120%;text-align:center;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;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">SIGNATURES</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;">Pursuant to the requirements of the Securities Act of 1933, as amended, 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 San Jose, State of California, on  </font><font style="font-family:inherit;font-size:10pt;">February&#160;23, 2017</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:115%;padding-top:16px;text-align:left;padding-left:336px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">A10 NETWORKS, INC.</font></div><div style="line-height:115%;padding-top:16px;text-align:left;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;">&#32;/s/ Lee Chen&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font></div><div style="line-height:115%;text-align:left;padding-left:336px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Lee Chen</font></div><div style="line-height:115%;text-align:left;padding-left:336px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Chief Executive Officer and President</font></div><div style="line-height:115%;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:115%;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%;padding-top:16px;text-align:justify;text-indent:48px;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 Lee Chen and Greg Straughn, and each of them, as his true and lawful attorney in fact and agent with full power of substitution, for him in any and all capacities, to sign any and all amendments to this Registration Statement on Form S-8 (including post-effective amendments), and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney in fact, proxy and agent full power and authority to do and 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style="vertical-align:bottom;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;">Lee Chen</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="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Principal Executive Officer)</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 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 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style="vertical-align:bottom;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;">and Secretary and Director</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 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><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;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;">/s/  Peter Y. Chung</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="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</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="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">February 23, 2017</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:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Peter Y. Chung</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="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 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><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;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;">/s/ Alan S. Henricks</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="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</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="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">February 23, 2017</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:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Alan S. Henricks</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="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 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><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;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;">/s/ Phillip J. Salsbury</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="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Director</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="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">February 23, 2017</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:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Phillip J. Salsbury</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="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></table></div></div><div style="line-height:120%;padding-top:16px;text-align:center;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></div><div><br></div><div style="line-height:120%;padding-top:16px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></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;">EXHIBIT INDEX</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></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="9"></td></tr><tr><td style="width:9%;"></td><td style="width:3%;"></td><td style="width:34%;"></td><td style="width:10%;"></td><td style="width:10%;"></td><td style="width:2%;"></td><td style="width:12%;"></td><td style="width:10%;"></td><td style="width:10%;"></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="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="4" style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Incorporated by Reference Herein</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Exhibit 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><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Description</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Filed Herewith</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Form</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-top:16px;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"><br></font></div><div style="padding-top:16px;text-align:center;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;font-weight:bold;text-decoration:underline;">File No. </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Exhibit</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:16px;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;text-decoration:underline;">Filing Date</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Specimen common stock certificate of the Registrant</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:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">S-1/A</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">333-194015</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4.1</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">3/10/2014</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Opinion of Wilson Sonsini Goodrich &amp; Rosati, Professional Corporation</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</font></div></td><td colspan="2" 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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Consent of Deloitte &amp; Touche LLP, Independent Registered Public Accounting Firm</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</font></div></td><td colspan="2" 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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Consent of Wilson Sonsini Goodrich &amp; Rosati, Professional Corporation (see Exhibit 5.1)</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</font></div></td><td colspan="2" 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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Power of Attorney (contained on signature page hereto)</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">X</font></div></td><td colspan="2" 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="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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">99.1</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:16px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Amended and Restated 2014 Equity Incentive Plan and forms of agreement thereunder</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: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;">10-K</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;">001-36343</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;">10.4</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;">2/29/2016</font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;"><br></font></div><div><br></div><div></div>	</body>
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Document
As filed with the Securities and Exchange Commission on February 23, 2017
Registration No. 333-
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S‑8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
A10 NETWORKS, INC.
(Exact name of Registrant as specified in its charter)
Delaware
20-1446869
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
3 West Plumeria Drive
San Jose, CA 95134
(Address of principal executive offices, including zip code)
Amended and Restated 2014 Equity Incentive Plan
(Full title of the plan)
Lee Chen
President and Chief Executive Officer
A10 Networks, Inc.
3 West Plumeria Drive
San Jose, CA 95134
(408) 325-8668
(Name, address and telephone number, including area code, of agent for service)
Herbert P. Fockler
Mark B. Baudler
Wilson Sonsini Goodrich & Rosati
Professional Corporation
650 Page Mill Road
Palo Alto, CA 94304
(650) 493-9300
Copies to:
Robert Cochran
Executive Vice President,
Legal and Corporate Collaboration
A10 Networks, Inc.
3 West Plumeria Drive
San Jose, CA 95134
(408) 325-8668
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act (Check one).
Large accelerated filer
o
Non-accelerated filer
o
(Do not check if a smaller reporting company)
Accelerated filer
x
Smaller reporting company
o
CALCULATION OF REGISTRATION FEE
Title of Securities
to be Registered
Proposed
Maximum Amount
to be
Registered (1)
Proposed
Maximum
Offering Price
per Share
Aggregate
Offering Price
Amount of
Registration Fee
Common Stock, par value $0.00001 per share, reserved for issuance pursuant to the Amended and Restated 2014 Equity Incentive Plan
3,394,376 (2)
$ 9.55 (3)
$ 32,416,290.80
$ 3,757.05
TOTAL
3,394,376
$ 32,416,290.80
$ 3,757.05
(1)   Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "
Securities Act
"), this registration statement shall also cover any additional securities that may be necessary to adjust the number of shares reserved for issuance pursuant to the Registrant's Amended and Restated 2014 Equity Incentive Plan (the "
2014 Plan
") by reason of any stock split, stock dividend or similar adjustment effected without the Registrant's receipt of consideration that results in an increase in the number of outstanding shares of the Registrant's common stock.
(2)   Reflects an automatic annual increase of 3,394,376 on January 1, 2017 to the number of shares of Registrant's Common Stock reserved for issuance under the 2014 Plan, which annual increase is provided for in the 2014 Plan.
(3)   Estimated in accordance with paragraphs (c) and (h) of Rule 457 under the Securities Act solely for the purpose of calculating the registration fee on the basis of $9.55 per share, which represents the average of the high and low price per share of the Registrant's common stock on February 17, 2017 as reported on the New York Stock Exchange.
REGISTRATION OF ADDITIONAL SECURITIES
PURSUANT TO GENERAL INSTRUCTION E
This Registration Statement on Form S-8 (the "Registration Statement") registers additional shares of Common Stock of A10 Networks, Inc. (the "Registrant") to be issued pursuant to the Registrant's Amended and Restated 2014 Equity Incentive Plan (the "
2014 Plan
"). The number of shares of the Registrant's common stock available for grant and issuance under the 2014 Plan is subject to an annual increase on the first day of each fiscal year starting on January 1, 2015 by an amount equal to the least of (i) 8,000,000 Shares, (ii) five percent (5%) of the outstanding Shares (as defined in the 2014 Plan) on the last day of the immediately preceding fiscal year of the Registrant or (iii) such number of Shares determined by the board of directors of the Registrant.
On January 1, 2017, the number of shares of the Registrant's common stock available for grant and issuance under the 2014 Plan increased by 3,394,376 shares.  These additional shares of Common Stock have become reserved for issuance as a result of the operation of the "evergreen" provision of the 2014 Plan.  Accordingly, the content of the Registrant's Registration Statement on Form S-8 (No. 333-194719) filed with the Securities and Exchange Commission (the "Commission") on March 21, 2014, as amended by the Post-Effective Amendment No. 1 to the Registration Statement on Form S-8 filed with the Commission on June 23, 2014, is incorporated herein by reference 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 Registrant hereby incorporates by reference in this Registration Statement the following documents and information previously filed with the Commission:
(1)The Registrant's Annual Report on Form 10-K filed with the Commission on February 23, 2017 pursuant to Section 13(a) of the Securities Exchange Act of 1934, as amended (the "
Exchange Act
"); and
(2)The description of the Registrant's common stock contained in the Registrant's Registration Statement on Form 8-A (File No. 001-36331) filed with the Commission on March 21, 2014, pursuant to Section 12(b) of the Exchange Act, 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 indicate 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 a 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 into 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 other subsequently filed document which also is or 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
Incorporated by Reference Herein
Exhibit Number
Description
Filed Herewith
Form
File No.
Exhibit
Filing Date
4.1
Specimen common stock certificate of the Registrant
S-1/A
333-194015
4.1
3/10/2014
5.1
Opinion of Wilson Sonsini Goodrich & Rosati, Professional Corporation
X
23.1
Consent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm
X
23.2
Consent of Wilson Sonsini Goodrich & Rosati, Professional Corporation (see Exhibit 5.1)
X
24.1
Power of Attorney (contained on signature page hereto)
X
99.1
Amended and Restated 2014 Equity Incentive Plan and forms of agreement thereunder
10-K
001-36343
10.4
2/29/2016
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended, 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 San Jose, State of California, on
February 23, 2017
.
A10 NETWORKS, INC.
By:
/s/ Lee Chen
Lee Chen
Chief Executive Officer and President
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Lee Chen and Greg Straughn, and each of them, as his true and lawful attorney in fact and agent with full power of substitution, for him in any and all capacities, to sign any and all amendments to this Registration Statement on Form S-8 (including post-effective amendments), and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney in fact, proxy and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney in fact, proxy and agent, or his substitute, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement on Form S‑8 has been signed by the following persons in the capacities and on the dates indicated.
Signature
Title
Date
/s/  Lee Chen
Chief Executive Officer, President and Director
February 23, 2017
Lee Chen
(Principal Executive Officer)
/s/ Greg Straughn
Chief Financial Officer
February 23, 2017
Greg Straughn
(Principal Accounting and Financial Officer)
/s/ Robert Cochran
Executive Vice President, Legal and Corporate Collaboration
February 23, 2017
Robert Cochran
and Secretary and Director
/s/  Peter Y. Chung
Director
February 23, 2017
Peter Y. Chung
/s/ Alan S. Henricks
Director
February 23, 2017
Alan S. Henricks
/s/ Phillip J. Salsbury
Director
February 23, 2017
Phillip J. Salsbury
EXHIBIT INDEX
Incorporated by Reference Herein
Exhibit Number
Description
Filed Herewith
Form
File No.
Exhibit
Filing Date
4.1
Specimen common stock certificate of the Registrant
S-1/A
333-194015
4.1
3/10/2014
5.1
Opinion of Wilson Sonsini Goodrich & Rosati, Professional Corporation
X
23.1
Consent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm
X
23.2
Consent of Wilson Sonsini Goodrich & Rosati, Professional Corporation (see Exhibit 5.1)
X
24.1
Power of Attorney (contained on signature page hereto)
X
99.1
Amended and Restated 2014 Equity Incentive Plan and forms of agreement thereunder
10-K
001-36343
10.4
2/29/2016