<SEC-DOCUMENT>0001140361-15-021873.txt : 20150527
<SEC-HEADER>0001140361-15-021873.hdr.sgml : 20150527
<ACCEPTANCE-DATETIME>20150527145903
ACCESSION NUMBER:		0001140361-15-021873
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20150527
DATE AS OF CHANGE:		20150527
EFFECTIVENESS DATE:		20150527

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AXT INC
		CENTRAL INDEX KEY:			0001051627
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				943031310
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-204478
		FILM NUMBER:		15892107

	BUSINESS ADDRESS:	
		STREET 1:		4281 TECHNOLOGY DR.
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94538
		BUSINESS PHONE:		510.438.4734

	MAIL ADDRESS:	
		STREET 1:		4281 TECHNOLOGY DR.
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94538

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMERICAN XTAL TECHNOLOGY
		DATE OF NAME CHANGE:	19971217
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>forms8.htm
<DESCRIPTION>AXT, INC S-8 5-27-2015
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: right; MARGIN-RIGHT: 3.6pt">As filed with the Securities and Exchange Commission on May 27, 2015</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: right; MARGIN-LEFT: 0.55pt; MARGIN-RIGHT: 3.6pt">Registration No.</div>
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<div style="FONT-SIZE: 14pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">UNITED STATES</div>

<div style="FONT-SIZE: 14pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">SECURITIES AND EXCHANGE COMMISSION</div>

<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">Washington, D.C. 20549</div>

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<div style="FONT-SIZE: 18pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">FORM S&#8209;8</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">REGISTRATION STATEMENT</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; FONT-STYLE: italic; TEXT-ALIGN: center">Under</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; FONT-STYLE: italic; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">The Securities Act of 1933</div>

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<div style="FONT-SIZE: 24pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">AXT, INC.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">(Exact name of Registrant as specified in its charter)</div>

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<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 49%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Delaware</div>
</td>
<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 2%">&#160;</td>
<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 49%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">94-3031310</div>
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<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 49%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">(State or other jurisdiction of incorporation or organization)</div>
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<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 2%">&#160;</td>
<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 49%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">(I.R.S. Employer Identification Number)</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">4281 Technology Drive</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">Fremont, California 94538</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">(Address of principal executive offices, including zip code)</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">AXT, INC. 2015 EQUITY INCENTIVE PLAN</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">(Full title of the plan)</div>

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<div>&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Morris S. Young</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Chief Executive Officer</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">AXT, Inc.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">4281 Technology Drive</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Fremont, California 94538</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">(510) 683-5900</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">(Name, address and telephone number, including area code, of agent for service)</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic; TEXT-ALIGN: center">With a copy to:</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Donna M. Petkanics</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: -20.2pt; TEXT-INDENT: 21.35pt">Wilson Sonsini Goodrich &amp; Rosati, P.C.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">650 Page Mill Road</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Palo Alto, California 94304</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">(650) 493-9300</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">&#160;</div>

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<div>&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 0.55pt">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.&#160; See the definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer&#8221; and &#8220;smaller reporting company&#8221; in Rule 12b&#8209;2 of the Exchange Act.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-RIGHT: 18.5pt">Large accelerated filer</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-RIGHT: 18.5pt">&#9744;</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-RIGHT: 18.5pt">Accelerated filer</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings; MARGIN-RIGHT: 18.5pt">&#253;</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-RIGHT: 18.5pt">Non-accelerated filer</div>
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<td style="BORDER-TOP: medium none; BORDER-RIGHT: medium none; VERTICAL-ALIGN: top; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; WIDTH: 55%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-RIGHT: 18.5pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#9744;</font>(do not check if a smaller reporting company)</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-RIGHT: 18.5pt">Smaller reporting company</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; MARGIN-RIGHT: 18.5pt">&#9744;</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center; MARGIN-LEFT: 0.55pt">CALCULATION OF REGISTRATION FEE</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Title of Securities to be Registered</div>
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<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Amount to be</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Registered(1)</div>
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<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Proposed Maximum </div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Offering Price Per</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Share</div>
</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160;</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Proposed Maximum</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Aggregate Offering</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Price</div>
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<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160;</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">
<div></div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Amount of</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Registration Fee</div>
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<td style="BORDER-TOP: #000000 4px double; VERTICAL-ALIGN: bottom; WHITE-SPACE: nowrap; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160;</td>
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<td style="VERTICAL-ALIGN: top; BORDER-BOTTOM: #000000 2px solid" valign="bottom">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 10.8pt; TEXT-INDENT: -10.8pt">Common stock, $0.001 par value per share:</div>
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<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">&#160;&#160;&#160;&#160; </td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">&#160; </td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160; </td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">&#160; </td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid" valign="bottom" colspan="2">&#160; </td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left" valign="bottom" nowrap="nowrap">&#160;</td>
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<td style="VERTICAL-ALIGN: top; BORDER-BOTTOM: #000000 2px solid; WIDTH: 52%; BACKGROUND-COLOR: #cceeff" valign="bottom">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; MARGIN-LEFT: 10.8pt; TEXT-INDENT: -10.8pt">&#8212; To be issued under the 2015 Equity Incentive Plan</div>
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<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: right; WIDTH: 9%; BACKGROUND-COLOR: #cceeff" valign="bottom">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">3,399,562</div>
</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" valign="bottom" nowrap="nowrap">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" valign="bottom">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: left; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" valign="bottom">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">$</div>
</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: right; WIDTH: 9%; BACKGROUND-COLOR: #cceeff" valign="bottom">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">2.38</div>
</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(2)</div>
</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">$</div>
</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">8,090,957.56</div>
</td>
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<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; BORDER-LEFT: #000000 2px solid; WIDTH: 1%; BACKGROUND-COLOR: #cceeff" valign="bottom">&#160;</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">$</div>
</td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: #000000 2px solid; TEXT-ALIGN: right; WIDTH: 9%; BACKGROUND-COLOR: #cceeff" valign="bottom">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">940.17</div>
</td>
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<div><br>
</div>

<div style="TEXT-ALIGN: justify">
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; WIDTH: 18pt; align: right">&#160;(1)</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; TEXT-ALIGN: justify; WIDTH: auto">Pursuant to Rule 416(a) of the Securities Act of 1933, as amended <font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(the &#8220;Securities Act&#8221;)</font>, this Registration Statement shall also cover any additional shares of common stock of AXT, Inc. <font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(the &#8220;Registrant&#8221;) </font>that become issuable under the 2015 Equity Incentive Plan by reason of any stock dividend, stock split, recapitalization or other similar transaction effected without receipt of consideration that increases the number of the Registrant&#8217;s outstanding shares of common stock.</td>
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</div>

<div style="TEXT-ALIGN: justify">
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; WIDTH: 18pt; align: right">(2)</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; TEXT-ALIGN: justify; WIDTH: auto">Estimated in accordance with Rule 457(c) and Rule 457 (h) of the Securities Act solely for purposes of calculating the registration fee on the basis of $2.38, the average of the high and low prices of the Registrant&#8217;s common stock as reported on the NASDAQ Global Select Market on May 21, 2015.</td>
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</div>

<div>&#160;</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">PART I</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">INFORMATION REQUIRED IN THE PROSPECTUS</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">The documents containing the information specified in Item 1 and Item 2 of this Registration Statement on Form S&#8209;8 (the &#8220;Registration Statement&#8221;) will be sent or given to employees, officers, directors or others as specified by Rule 428(b)(1) under the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;).&#160; In accordance with the rules and regulations of the Securities and Exchange Commission (the &#8220;Commission&#8221;) and the instructions to the Registration Statement, such documents are not being filed with the Commission either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule 424.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">PART II</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">INFORMATION REQUIRED IN REGISTRATION STATEMENT</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="TEXT-ALIGN: left">
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 3.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Incorporation of Documents by Reference.</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">AXT, Inc. (the &#8220;Registrant&#8221;) hereby incorporates by reference into this Registration Statement the following documents previously filed with the&#160;Commission (other than information in a report on Form 8-K that is furnished and not filed pursuant to Form 8-K and, except as may be noted in any such Form 8-K, exhibits filed on such form that are related to such information):</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(1) The Registrant&#8217;s Annual Report on Form 10&#8209;K (File No.<font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</font>000-24085<font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">)</font> for its fiscal year ended December 31, 2014, filed with the Commission on March 13, 2015 pursuant to Section 13(a) of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;);</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(2) The Registrant&#8217;s Quarterly Report on Form 10&#8209;Q (File No.<font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</font>000-24085<font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">)</font> for the quarterly period ended March 31, 2015, filed with the Commission on May 8, 2015 pursuant to Section 13 of the Exchange Act;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(3) Each of the Registrant&#8217;s Current Reports on Form 8-K filed with the Commission pursuant to Section 13 of the Exchange Act on February 23, 2015, April 29, 2015, May 20, 2015 and May 22, 2015; and</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">(4) The Registrant&#8217;s description of its Common Stock contained in its Registration Statement on Form 8-A filed on April 24, 1998, under the Exchange Act, including any amendment or report filed for the purpose of updating such description.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">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 style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic"> provided</font>, <font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic">however</font>, 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 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.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 4.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Description of Securities.</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">Not applicable.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="TEXT-ALIGN: left">
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 5.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Interests of Named Experts and Counsel.</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">Not applicable.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 6.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Indemnification of Directors and Officers.</td>
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<div style="TEXT-ALIGN: left">&#160;</div>

<div style="TEXT-ALIGN: left; TEXT-INDENT: 36pt">Section 102(b) of the Delaware General Corporation Law authorizes a corporation to provide in its Certificate of Incorporation that a director of the corporation shall not be personally liable to a corporation or its stockholders for monetary damages for breach or alleged breach of the director&#8217;s &#8220;duty of care.&#8221;&#160; While this statute does not change the directors&#8217; duty of care, it enables corporations to limit available relief to equitable remedies such as injunction or rescission.&#160; The statute has no effect on a director&#8217;s duty of loyalty or liability for acts or omissions not in good faith or involving intentional misconduct or knowing violations of law, illegal payment of dividends or stock redemptions or repurchases, or for any transaction from which the director derives an improper personal benefit.&#160; As permitted by the statute, we have adopted provisions in&#160;our Certificate of Incorporation which eliminate to the fullest extent permissible under Delaware law the personal liability of&#160;our directors to us and our stockholders for monetary damages for breach or alleged breach of their duty of care.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 24.5pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">Section 145 of the General Corporation Law of the State of Delaware provides for the indemnification of officers, directors, employees and agents of a corporation.&#160; Our Bylaws provide for indemnification of&#160;our directors, officers, employees and agents to the full extent permitted by Delaware law, including those circumstances in which indemnification would otherwise be discretionary under Delaware law.&#160; Our Bylaws also empower&#160;us to enter into indemnification agreements with&#160;our directors and officers and to purchase insurance on behalf of any person whom&#160;we are required or permitted to indemnify.&#160; We have entered into agreements with&#160;our directors and certain of&#160;our executive officers that require us to indemnify such persons to the fullest extent permitted under Delaware law against expenses, judgments, fines and amounts paid in settlement&#160;actually and reasonably incurred (including expenses of a derivative action) in connection with any proceeding, whether actual or threatened, to which any such person may be made a party by reason of the fact that such person is or was a director or executive officer of us or any of our affiliated enterprises.&#160; The indemnification agreements also set forth certain procedures that will apply in the event of a claim for indemnification thereunder.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 24.5pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">Section 145 of the General Corporation Law of the State of Delaware provides for indemnification in terms sufficiently broad to indemnify such individuals, under certain circumstances, for liabilities (including reimbursement of expenses incurred) arising under the Securities Act.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 7.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Exemption from Registration Claimed.</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">Not applicable.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="TEXT-ALIGN: left">
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 8.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Exhibits.</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">See the Index to Exhibits following the signature page hereto.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="TEXT-ALIGN: left">
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; WIDTH: 36pt; align: right">Item 9.</td>
<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; FONT-WEIGHT: bold; TEXT-ALIGN: left; WIDTH: auto">Undertakings.</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">A. The undersigned Registrant hereby undertakes:</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement.&#160; Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the &#8220;Calculation of Registration Fee&#8221; table in the effective registration statement;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">&#160;</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">&#160;(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 72pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt"><font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic">Provided</font>, <font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic">however</font>, that paragraphs (A)(1)(i) and (A)(1)(ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in this registration statement.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">B. The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the Registrant&#8217;s annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan&#8217;s annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial <font style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-STYLE: italic">bona fide</font> offering thereof.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">C. Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable.&#160; In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act of 1933 and will be governed by the final adjudication of such issue.</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">SIGNATURES</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">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&#8209;8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Fremont, State of California, on May 27, 2015.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">
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<td style="VERTICAL-ALIGN: top" colspan="2">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: left">AXT, INC.</div>
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<td style="VERTICAL-ALIGN: top; WIDTH: 49.97%">&#160;</td>
<td style="VERTICAL-ALIGN: top" colspan="2"></td>
<td style="VERTICAL-ALIGN: top; WIDTH: 11%"></td>
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<tr>
<td style="VERTICAL-ALIGN: top; WIDTH: 49.97%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">&#160;</div>
</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 4%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">By:</div>
</td>
<td style="VERTICAL-ALIGN: top; BORDER-BOTTOM: #000000 2px solid; WIDTH: 34.97%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">/s/ Morris S. Young</div>
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<td style="VERTICAL-ALIGN: top; WIDTH: 49.97%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">&#160;</div>
</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 4%">&#160;</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 34.97%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Morris S. Young</div>
</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 11%">&#160;</td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">&#160;</div>
</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 4%">&#160;</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 34.97%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Chief Executive Officer</div>
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<td style="VERTICAL-ALIGN: middle; WIDTH: 11%">&#160;</td>
</tr>
</table>
</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">POWER OF ATTORNEY</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Morris S. Young and Gary L. Fischer, and each of them, as his or her true and lawful attorneys-in-fact and agent with full power of substitution, for him or her 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 attorneys-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 attorneys-in-fact, proxy and agent, or his or her substitute, may lawfully do or cause to be done by virtue hereof.</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">&#160;</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: justify; TEXT-INDENT: 36pt">Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement on Form S&#8209;8 has been signed by the following persons in the capacities and on the dates indicated below:</div>

<div><br>
</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Signature</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Title</div>
</td>
<td style="VERTICAL-ALIGN: bottom; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Date</div>
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<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
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<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: bottom; TEXT-ALIGN: center; WIDTH: 15%"></td>
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<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: black 2px solid; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">/s/ Morris S. Young</div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Chief Executive Officer and Director</div>
</td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; PADDING-BOTTOM: 2px; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">May 27, 2015&#160;</div>
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<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">Morris S. Young</div>
</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(Principal Executive Officer)</div>
</td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</div>
</td>
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<tr style="HEIGHT: 18px">
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
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<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%"></td>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">/s/ Gary L. Fischer</div>
</td>
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<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; TEXT-ALIGN: left; WIDTH: 46%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Chief Financial Officer and Corporate Secretary</div>
</td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; PADDING-BOTTOM: 2px; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">May 27, 2015&#160;</div>
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<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">Gary L. Fischer</div>
</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">(Principal Financial and Accounting Officer)</div>
</td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</div>
</td>
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<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%"></td>
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<tr>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: black 2px solid; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">/s/ Jesse Chen</div>
</td>
<td style="VERTICAL-ALIGN: bottom; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; TEXT-ALIGN: left; WIDTH: 46%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Chairman of the Board of Directors</div>
</td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; PADDING-BOTTOM: 2px; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">May 27, 2015&#160;</div>
</td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">Jesse Chen</div>
</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</div>
</td>
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<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%"></td>
</tr>

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<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: black 2px solid; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">/s/ David C. Chang</div>
</td>
<td style="VERTICAL-ALIGN: bottom; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; TEXT-ALIGN: left; WIDTH: 46%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Director</div>
</td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; PADDING-BOTTOM: 2px; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">May 27, 2015&#160;</div>
</td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">David C. Chang</div>
</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</div>
</td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">&#160;</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%"></td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: black 2px solid; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">/s/ Leonard J. LeBlanc</div>
</td>
<td style="VERTICAL-ALIGN: bottom; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; TEXT-ALIGN: left; WIDTH: 46%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">Director</div>
</td>
<td style="VERTICAL-ALIGN: middle; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; PADDING-BOTTOM: 2px; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">May 27, 2015&#160;</div>
</td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 35%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">Leonard J. LeBlanc</div>
</td>
<td style="VERTICAL-ALIGN: bottom; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: 46%"></td>
<td style="VERTICAL-ALIGN: middle; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: top; TEXT-ALIGN: center; WIDTH: 15%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif">&#160;</div>
</td>
</tr>
</table>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">&#160;</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">INDEX TO EXHIBITS</div>

<div><br>
</div>

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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Exhibit</div>

<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Number</div>
</div>
</td>
<td style="VERTICAL-ALIGN: bottom; PADDING-BOTTOM: 2px; WIDTH: 2%"></td>
<td style="VERTICAL-ALIGN: bottom; BORDER-BOTTOM: black 2px solid; WIDTH: 90%">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-WEIGHT: bold; TEXT-ALIGN: center">Description</div>
</td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: top; WIDTH: 8%; BACKGROUND-COLOR: #cceeff">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center">4.1*</div>
</td>
<td style="VERTICAL-ALIGN: top; WIDTH: 2%; BACKGROUND-COLOR: #cceeff"></td>
<td style="VERTICAL-ALIGN: top; WIDTH: 90%; BACKGROUND-COLOR: #cceeff">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">2015 Equity Incentive Plan</div>
</td>
</tr>

<tr>
<td style="VERTICAL-ALIGN: top; WIDTH: 8%; BACKGROUND-COLOR: #ffffff">
<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: center"><a href="ex5_1.htm">5.1</a></div>
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<div style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; TEXT-ALIGN: left">Opinion of Wilson Sonsini Goodrich &amp; Rosati, Professional Corporation</div>
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<td style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman', Times, serif; VERTICAL-ALIGN: top; TEXT-ALIGN: left; WIDTH: auto">Incorporated by reference to Appendix A to the Registrant&#8217;s Definitive Proxy Statement filed on April 8, 2015, as amended on April 17, 2015 (File No. 000-24085).</td>
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<TYPE>EX-5.1
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<div style="TEXT-ALIGN: right; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Exhibit 5.1</div>

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<div style="TEXT-ALIGN: center; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">May 27, 2015</div>

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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">AXT, Inc.</div>

<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">4281 Technology Drive</div>

<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">Fremont, California 94538</div>

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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">Ladies and Gentlemen:</div>

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<div style="TEXT-ALIGN: justify; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">We have examined the Registration Statement on Form S-8 (the &#8220;Registration Statement&#8221;) to be filed by AXT, Inc., a Delaware corporation, with the Securities and Exchange Commission (the &#8220;Commission&#8221;) on or about the date hereof, in connection with the registration under the Securities Act of 1933, as amended (the &#8220;Securities Act&#8221;), of an aggregate of 3,399,562 shares of your common stock, par value $0.001 per share (the &#8220;Shares&#8221;), reserved for issuance pursuant to the 2015 Equity Incentive Plan (the &#8220;Plan&#8221;). As your legal counsel, we have reviewed the actions proposed to be taken by you in connection with the issuance and sale of the Shares to be issued under the Plan.</div>

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<div style="TEXT-ALIGN: justify; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">It is our opinion that the Shares, when issued and sold in the manner referred to in the Plan and pursuant to the agreements that accompany the Plan, will be legally and validly issued, fully paid and nonassessable.</div>

<div style="TEXT-ALIGN: justify; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">&#160;</div>

<div style="TEXT-ALIGN: justify; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">We consent to the use of this opinion as an exhibit to the Registration Statement, and further consent to the use of our name wherever appearing in the Registration Statement and any amendments thereto. In giving such consent, we do not consider that we are &#8220;experts&#8221; within the meaning of such term as used in the Securities Act, or the rules and regulations of the Commission issued thereunder, with respect to any part of the Registration Statement, including this opinion as an exhibit or otherwise.</div>

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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">Very truly yours,</div>
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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">WILSON SONSINI GOODRICH &amp; ROSATI</div>
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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">Professional Corporation</div>
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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">/s/ Wilson Sonsini Goodrich &amp; Rosati. P.C.</div>
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<TYPE>EX-23.1
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<DESCRIPTION>EXHIBIT 23.1
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<div style="TEXT-ALIGN: right; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold">Exhibit 23.1</div>

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<div style="TEXT-ALIGN: center; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt; FONT-WEIGHT: bold">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</div>

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<div style="TEXT-ALIGN: justify; TEXT-INDENT: 36pt; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated March 13, 2015 relating to the consolidated financial statements, and the effectiveness of internal control over financial reporting, which appear in AXT, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2014.</div>

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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">/s/ Burr Pilger Mayer, Inc.</div>
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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">San Jose, California</div>
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<div style="TEXT-ALIGN: left; FONT-FAMILY: 'Times New Roman', Times, serif; FONT-SIZE: 10pt">May 27, 2015</div>
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