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<TITLE>LUMINEX CORPORATION</TITLE>
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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">







<DIV align="center" style="font-size: 10pt; margin-top: 18pt">As filed with Securities and Exchange Commission on May&nbsp;25, 2006
</DIV>


<DIV align="right" style="font-size: 10pt; margin-top: 0pt">Registration No.&nbsp;333- __________
</DIV>

<DIV align="right" style="font-size: 10pt; margin-top: 6pt">&nbsp;
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 0pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B><FONT style="border-bottom: 1px solid #000000">LUMINEX CORPORATION</FONT></B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD align="center" valign="top">Delaware
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">72-2747608</TD>
</TR>
<TR style="font-size: 1px">

<TD align="center" valign="top">
<div style="border-top: 1px solid #000000; width: 50%">&nbsp;
</div></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">
<div style="border-top: 1px solid #000000; width: 55%">&nbsp;</div></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer Identification No.)</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">of incorporation or organization)</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
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</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">12212 Technology Blvd., Austin, Texas 78727</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 1pt; width: 35%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt">(Address of principal executive offices) (Zip Code)</DIV>


<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>LUMINEX CORPORATION 2006 EQUITY INCENTIVE PLAN<BR>
LUMINEX CORPORATION 2006 MANAGEMENT STOCK PURCHASE PLAN</B><BR>
(Full title of the Plan)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">David S. Reiter<BR>
Vice President, General Counsel and Corporate Secretary<BR>
Luminex Corporation<BR>
12212 Technology Boulevard<BR>
Austin, Texas 78727<BR>
(Name and address of agent for service)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">(512)&nbsp;219-8020</DIV>

<DIV align="center"><DIV style="font-size: 3pt; margin-top: 1pt; width: 43%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>

<DIV align="center" style="font-size: 10pt">(Telephone number, including area code, of agent for service)</DIV>


<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>



<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>CALCULATION OF REGISTRATION FEE</B>
</DIV>

<DIV align="center">
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    <TD width="2%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
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    <TD nowrap align="left" colspan="15" style="border-bottom: 3px double #000000">&nbsp;</TD>
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<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Proposed Maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Proposed</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Offering</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"></TD>
    <TD width="1%">&nbsp;</TD>
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    <TD nowrap align="center"><B>Title of Securities</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Amount to be</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Price Per</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Aggregate</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Amount of</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center"><B>to be Registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Registered (1)</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Share (2)</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Offering Price</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Registration Fee</B></TD>
    <TD width="1%">&nbsp;</TD>
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                    <TD style="border-top: 1px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock, par
value $0.001 per
share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="center" valign="top" style="border-top: 1px solid #000000" nowrap>2,500,000 shares</TD>
    <TD style="border-right: 2px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000">$14.95</TD>
    <TD style="border-right: 2px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000">$37,375,000</TD>
    <TD style="border-right: 2px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>

<TD align="center" valign="top" style="border-top: 1px solid #000000">$4,000</TD>
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="15" style="border-top: 3px double #000000">&nbsp;</TD>
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<DIV style="margin-top: 3pt">
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<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
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<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &#147;Securities
Act&#148;), this registration statement includes an indeterminate number of additional shares which may
be offered and issued to prevent dilution resulting from stock splits, stock dividends or similar
transactions. In addition, this registration statement covers
related  rights to purchase the Registrant&#146;s Series A Junior
Participating Preferred Stock registered on a Form 8-A filed with the
Securities and Exchange Commission on June 21, 2001 (the
&#147;Stock Rights&#148;). No additional consideration will be
received for the Stock Rights, which will initially trade together
with the Registrant&#146;s common stock.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Pursuant to Rule&nbsp;457(h)(1) under the Securities Act, the offering price is estimated solely
for the purpose of calculating the registration fee on the basis of the average of the high and low
prices of the Registrant&#146;s Common Stock on the Nasdaq National
Market on May&nbsp;22, 2006.</TD>
</TR>
</TABLE>
</DIV>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>







<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">










<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
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</TR>
<TR><TD colspan="9"><A HREF="#000">PART I</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">PART II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;3. Incorporation of Documents by Reference</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;4. Description of Securities</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;5. Interests of Named Experts and Counsel</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">Item&nbsp;6. Indemnification of Directors and Officers</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;7. Exemption from Registration Claimed</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">Item&nbsp;8. Exhibits</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#008">Item&nbsp;9. Undertakings</A></TD></TR>
<TR><TD colspan="9"><A HREF="#009">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#010">EXHIBIT INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="g01718exv5w1.txt">EX-5.1  OPINION OF BASS, BERRY & SIMS PLC</A></TD></TR>
<TR><TD colspan="9"><A HREF="g01718exv23w1.txt">EX-23.1  CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</A></TD></TR>
</TABLE>
</CENTER>
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<!-- link1 "PART I " -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART I</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><B>Information Required in the Section 10(a) Prospectus</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Luminex Corporation (the &#147;Registrant&#148;) has sent or given or will send or give documents
containing the information specified by Part&nbsp;I of this Form S-8 Registration Statement (the
&#147;Registration Statement&#148;) to participants in the plans to which this Registration Statement
relates, as specified in Rule&nbsp;428(b)(1) promulgated by the Securities and Exchange Commission (the
&#147;SEC&#148;) under the Securities Act of 1933, as amended (the &#147;Securities Act&#148;). The Registrant is not
filing such documents with the SEC, but these documents constitute (along with the documents
incorporated by reference into the Registration Statement pursuant to Item&nbsp;3 of Part&nbsp;II hereof) a
prospectus that meets the requirements of Section 10(a) of the Securities Act.
</DIV>

<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "PART II" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><B>Information Required in the Registration Statement</B>
</DIV>

<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference" -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Item&nbsp;3. <U>Incorporation of Documents by Reference</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed by the Registrant with the SEC, pursuant to the Securities Act
or the Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), are hereby incorporated by
reference and shall be deemed to be a part hereof from the date of filing of such document:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Registrant&#146;s Annual Report on Form 10-K for the fiscal year ended December&nbsp;31, 2005;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Registrant&#146;s Quarterly Report on Form 10-Q for the quarterly period ended March&nbsp;31, 2006;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Registrant&#146;s Current Reports on Form 8-K filed with the SEC on February&nbsp;1, 2006, February
15, 2006, April&nbsp;11, 2006, and April&nbsp;26, 2006; and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of the Registrant&#146;s Common Stock, par value $0.001 per share, contained in
the Registrant&#146;s Registration Statement on Form 8-A, filed with
the SEC on March&nbsp;27, 2000, and the description of the Stock
Rights contained in the Registrant&#146;s Registration Statement on Form 8-A, filed with the SEC on June 21, 2001, and
including all other amendments and reports filed for the purpose of updating such descriptions.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents filed by the Registrant pursuant to Section&nbsp;13(a), 13(c), 14 and 15(d) of the
Exchange Act after the date hereof and prior to the filing of a post-effective amendment to this
Registration Statement which indicates that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference
herein and to be a part hereof from the date of filing of such documents. Any statements contained
in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be
modified or replaced for purposes hereof to the extent that a statement contained herein (or in any
other subsequently filed document which also is incorporated or deemed to be incorporated by
reference herein) modifies or replaces such statement. Any statement so modified or replaced shall
not be deemed, except as so modified or replaced, to constitute a part hereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Notwithstanding the foregoing, information furnished under Items 2.02 and 7.01 of any Current
Report on Form 8-K, including the related exhibits, is not incorporated by reference in this
Registration Statement or the related prospectus.
</DIV>
<!-- link2 "Item&nbsp;4. Description of Securities" -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;4. <u>Description of Securities</u>.
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%">Not applicable.
</DIV>
<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel" -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;5. <u>Interests of Named Experts and Counsel</u>.
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%">Not applicable.
</DIV>
<!-- link2 "Item&nbsp;6. Indemnification of Directors and Officers" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;6. <u>Indemnification of Directors and Officers</u>.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145 of the Delaware General Corporation Law (the &#147;DGCL&#148;) permits a Delaware
corporation to indemnify any person who was or is a party or is threatened to be made a party to
any threatened, pending or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of the corporation) by
reason of the fact that he or she is or was a director, officer, employee or agent of the
corporation) or is or was serving at the request of the corporation as a director, officer,
employee or agent of another corporation or enterprise. A corporation may indemnify against
expenses (including attorneys&#146; fees), judgments, fines and amounts paid in settlement actually and
reasonably incurred in connection with such action, suit or proceeding if the person indemnified
acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the
best interests of the corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his or her conduct was unlawful. If the person indemnified is not
wholly successful in
such action, suit or proceeding, but is successful, on the merits or otherwise, in one or more
but less than all claims,
</DIV>

<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">issues or matters in such proceeding, he or she may be indemnified
against expenses actually and reasonably incurred in connection with each successfully resolved
claim, issue or matter. In the case of an action or suit by or in the right of the corporation to
procure a judgment in its favor, no indemnification may be made in respect to any claim, issue or
matter as to which such person shall have been adjudged to be liable to the corporation unless and
only to the extent that the Court of Chancery of the State of Delaware, or the court in which such
action or suit was brought, shall determine upon application that, despite the adjudication of
liability, such person is fairly and reasonably entitled to indemnity for such expenses which the
court shall deem proper. Section&nbsp;145 provides that, to the extent a present or former director or
officer of a corporation has been successful in the defense of any action, suit or proceeding
referred to above or in the defense of any claim, issue or manner therein, he or she shall be
indemnified against expenses (including attorneys&#146; fees) actually and reasonably incurred by him or
her in connection therewith.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Article&nbsp;V of the Registrant&#146;s restated certificate of incorporation (the &#147;Certificate&#148;)
provides that, except to the extent prohibited by the DGCL, the Registrant&#146;s directors shall not be
personally liable to it or its stockholders for monetary damages for breach of their fiduciary duty
as directors. Under the DGCL, the directors have a fiduciary duty to the Registrant which is not
eliminated by this provision of the Certificate and, in appropriate circumstances, equitable
remedies such as injunctive or other forms of non-monetary relief will remain available. In
addition, each director will continue to be subject to liability under the DGCL for breach of his
or her duty of loyalty to the Registrant or its stockholders; for acts or omissions which are found
by a court of competent jurisdiction to be not in good faith or which involve intentional
misconduct or knowing violations of law; for actions leading to improper personal benefit to the
director; and for payment of dividends or approval of stock repurchases or redemptions that are
prohibited by the DGCL. This provision also does not affect the directors&#146; responsibilities under
any other laws, such as the federal securities laws or state or federal environmental laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Article&nbsp;VI of the Certificate permits indemnification of any director or officer, as well as
any employee or agent of the Registrant, or any individual serving in such capacity for another
entity at the Registrant&#146;s request, for all expenses, judgments, fines, and amounts paid in
settlement so long as he or she acted in good faith and in a manner he or she reasonably believed
to be in, or not opposed to, the best interests of the Registrant, and, with respect to a criminal
proceeding, if he or she had no reasonable cause to believe his or her conduct was unlawful.
However, with respect to any action by or in the right of the Registrant, such a person will be
entitled to indemnification only if he or she acted in good faith and in a manner he or she
believed to be in, or not opposed to, the Registrant&#146;s best interests and, if he or she is adjudged
liable, only to the extent that the Court of Chancery of Delaware finds that he or she is
reasonably entitled to indemnification.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Article&nbsp;VI of the Certificate also authorizes the Registrant to assume the defense of an
indemnitee in any action, suit, proceeding or investigation in which indemnity is sought. In the
event that the Registrant does not assume the defense of an indemnitee, it may advance litigation
expenses to an indemnitee prior to the final disposition of an action concerning the indemnitee&#146;s
service. The making of such advances is conditioned upon the indemnitee giving the Registrant an
undertaking to repay the amount advanced if indemnification ultimately is deemed unavailable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If indemnification or advancement of expenses is authorized, it will not exclude any rights to
indemnification or advancement of expenses which any person may have under a bylaw, agreement,
board or stockholder vote, or otherwise. The indemnification or advancement of expenses provided by
Article&nbsp;IX will continue as to a person who ceases to be a director, officer, employee, or agent.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Certificate also states that the Registrant may maintain insurance, at its expense, to
protect itself and any director, officer, employee or agent of the Registrant or another
corporation against any loss, liability, or expense, whether or not the Registrant would have the
power to provide indemnification under the DGCL, as the Board of Directors may from time to time
determine. The Registrant has obtained directors&#146; and officers&#146; liability insurance, the effect of
which is to indemnify its directors and officers against certain damages and expenses because of
certain claims made against them caused by their negligent act, error or omission.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant has entered into Indemnification Agreements with each of its directors to give
such directors additional contractual assurances regarding the scope of indemnification set forth
in the Certificate and to provide additional procedural protections. At present, there is no
pending litigation or proceeding involving a director,
</DIV>

<P align="center" style="font-size: 10pt">II-2
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">officer or employee of the Registrant in
which indemnification is sought, nor is the Registrant aware of any threatened litigation that may
result in claims for indemnification.
</DIV>
<!-- link2 "Item&nbsp;7. Exemption from Registration Claimed" -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;7. <U>Exemption from Registration Claimed</U>.
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%">None.
</DIV>
<!-- link2 "Item&nbsp;8. Exhibits" -->
<DIV align="left"><A NAME="007"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Item&nbsp;8. <U>Exhibits</U>.
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="8%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="90%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Restated Certificate of Incorporation of the Company</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws of the Company</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3**
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Rights Agreement dated as of June&nbsp;21, 2001 between Luminex Corporation and
Mellon Investor Services, LLC, as Rights Agent, which includes as Exhibit&nbsp;A
the form of Certificate of Designations of Series&nbsp;A Junior Participating
Preferred Stock, as Exhibit&nbsp;B the Form of Rights Certificate and as Exhibit
C the Summary of Rights</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1***
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Luminex Corporation 2006 Equity Incentive Plan</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.2****
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Luminex Corporation 2006 Management Stock Purchase Plan</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Bass, Berry &#038; Sims PLC</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Independent Registered Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Bass, Berry &#038; Sims PLC (included in the Opinion of Bass, Berry &#038;
Sims PLC filed herewith as Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included on signature page of this Registration Statement)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="2%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="96%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as an Exhibit to the Company&#146;s Registration
Statement on Form&nbsp;S-1 (File No.&nbsp;333-96317), filed February&nbsp;7, 2000,
as amended, and incorporated herein by this reference.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">**
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as Exhibit&nbsp;4 to the Company&#146;s Current Report on Form
8-K dated June&nbsp;20, 2001, and incorporated herein by this reference.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">***
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as Exhibit&nbsp;A to the Company&#146;s Proxy Statement for
its Annual Meeting of Stockholders held on May&nbsp;25, 2006, and
incorporated herein by this reference.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">****
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as Exhibit&nbsp;B to the Company&#146;s Proxy Statement for
its Annual Meeting of Stockholders held on May&nbsp;25, 2006, and
incorporated herein by this reference.</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<!-- link2 "Item&nbsp;9. Undertakings" -->
<DIV align="left"><A NAME="008"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Item&nbsp;9. <U>Undertakings</U>.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A.&nbsp;The Registrant hereby undertakes:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;To include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;To reflect in the prospectus any facts or events arising after the effective date of this
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 this Registration
Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of
</DIV>

<P align="center" style="font-size: 10pt">II-3
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">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 SEC pursuant to Rule 424(b) if, in the aggregate, the changes
in volume and price represent no more than 20% change in the maximum aggregate offering price set
forth in the &#147;Calculation of Registration Fee&#148; table in the effective registration statement; and
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii)&nbsp;To include any material information with respect to the plan of distribution not
previously disclosed in this Registration Statement or any material change to such information in
this Registration Statement;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>Provided, however, </I>that clauses (a)(1)(i) and (a)(1)(ii) shall not apply if the information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed with or furnished to the Commission by the Registrant pursuant to Section&nbsp;13 or
Section 15(d) of the Exchange Act that are incorporated by reference into this Registration
Statement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;That, for the purpose of determining any liability under the Securities Act, 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 <I>bona fide </I>offering thereof.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;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 align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.&nbsp;The Registrant hereby undertakes that, for purposes of determining any liability under the
Securities Act, each filing of the Registrant&#146;s annual report pursuant to Section 13(a) or 15(d) of
the Exchange Act (and where applicable, each filing of an employee benefit plan&#146;s annual report
pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this
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 <I>bona fide </I>offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.&nbsp;Insofar as indemnification for liabilities arising under the Securities Act 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 SEC
such indemnification is against public policy as expressed in the Securities Act and is, therefore,
unenforceable. 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 and will be
governed by the final adjudication of such issue.
</DIV>

<P align="center" style="font-size: 10pt">II-4
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="009"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, 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 Austin, State of Texas, on this 25th
day of May, 2006.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="50%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="20%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" valign="top" align="left">LUMINEX CORPORATION</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">By:</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">/s/ Patrick J. Balthrop</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Patrick J. Balthrop
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;&nbsp;&nbsp;President and Chief</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Executive Officer</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><U>POWER OF ATTORNEY</U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL PERSONS BY THESE PRESENT, that each person whose signature appears below constitutes
and appoints Patrick J. Balthrop and Harriss T. Currie and each of them his or her true and lawful
attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her
and in his or her name, place and stead, in any and all capacities, to sign any and all amendments
(including post-effective amendments) to this Registration Statement, and to file the same, with
the SEC, granting unto said attorneys-in-fact and agents, full power and authority to do and
perform each and every act and thing requisite and necessary to be done in and about the premises,
as fully to all intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed below by the following persons in the capacities and on the dates indicated.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="46%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Signatures</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Date</B></TD>
</TR>
<TR>    <TD>&nbsp;</TD></TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="bottom">
<DIV style="margin-left:0px; text-indent:-0px">/s/ Patrick
J. Balthrop<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Patrick
J. Balthrop
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" valign="top">President and Chief
<BR>Executive Officer<BR>
(Principal Executive Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Harriss
T. Currie<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Harriss
T. Currie
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Vice President, Finance and<br>&nbsp;Chief
Financial Officer<br>
(Principal Financial Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Jay
B. Johnston
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Jay
B. Johnston
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Robert
J. Cresci
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Robert
J. Cresci
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Thomas
W. Erickson
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Thomas
W. Erickson
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Fred
C. Goad, Jr.
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Fred
C. Goad, Jr.
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Gerard
Vaillant
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Gerard
Vaillant
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">II-5
</DIV>

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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="46%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Signatures</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Date</B></TD>
</TR>
<TR>    <TD>&nbsp;</TD></TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Jim
D. Kever
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Jim
D. Kever
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ G.
Walter Loewenbaum II
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
G.
Walter Loewenbaum II
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Chairman of the Board of Directors,
&nbsp;<br>
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Kevin
M. McNamara
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
Kevin
M. McNamara
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">

<TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ J.
Stark Thompson
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
J.
Stark Thompson
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">May&nbsp;25, 2006</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">II-6
</DIV>

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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "EXHIBIT INDEX" -->
<DIV align="left"><A NAME="010"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>EXHIBIT INDEX</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="93%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Restated Certificate of Incorporation of the Company</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws of the Company</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3**
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Rights Agreement dated as of June&nbsp;21, 2001 between Luminex Corporation and
Mellon Investor Services, LLC, as Rights Agent, which includes as Exhibit&nbsp;A
the form of Certificate of Designations of Series&nbsp;A Junior Participating
Preferred Stock, as Exhibit&nbsp;B the Form of Rights Certificate and as Exhibit
C the Summary of Rights</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1***
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Luminex Corporation 2006 Equity Incentive Plan</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.2****
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Luminex Corporation 2006 Management Stock Purchase Plan</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Bass, Berry &#038; Sims PLC</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Independent Registered Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Bass, Berry &#038; Sims PLC (included in the Opinion of Bass, Berry &#038;
Sims PLC filed herewith as Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included on signature page of this Registration Statement)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="2%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="96%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">*
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as an Exhibit to the Company&#146;s Registration
Statement on Form&nbsp;S-1 (File No.&nbsp;333-96317), filed February&nbsp;7, 2000,
as amended, and incorporated herein by this reference.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">**
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as Exhibit&nbsp;4 to the Company&#146;s Current Report on Form
8-K dated June&nbsp;20, 2001, and incorporated herein by this reference.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">***
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as Exhibit&nbsp;A to the Company&#146;s Proxy Statement for
its Annual Meeting of Stockholders held on May&nbsp;25, 2006, and
incorporated herein by this reference.</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">****
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Previously filed as Exhibit&nbsp;B to the Company&#146;s Proxy Statement for
its Annual Meeting of Stockholders held on May&nbsp;25, 2006, and
incorporated herein by this reference.</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt">II-7
</DIV>

</BODY>
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LUMINEX CORPORATION
Table of Contents
As filed with Securities and Exchange Commission on May 25, 2006
Registration No. 333- __________
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
LUMINEX CORPORATION
(Exact name of registrant as specified in its charter)
Delaware
72-2747608
(State or other jurisdiction
(I.R.S. Employer Identification No.)
of incorporation or organization)
12212 Technology Blvd., Austin, Texas 78727
(Address of principal executive offices) (Zip Code)
LUMINEX CORPORATION 2006 EQUITY INCENTIVE PLAN
LUMINEX CORPORATION 2006 MANAGEMENT STOCK PURCHASE PLAN
(Full title of the Plan)
David S. Reiter
Vice President, General Counsel and Corporate Secretary
Luminex Corporation
12212 Technology Boulevard
Austin, Texas 78727
(Name and address of agent for service)
(512) 219-8020
(Telephone number, including area code, of agent for service)
CALCULATION OF REGISTRATION FEE
Proposed Maximum
Proposed
Offering
Maximum
Title of Securities
Amount to be
Price Per
Aggregate
Amount of
to be Registered
Registered (1)
Share (2)
Offering Price
Registration Fee
Common Stock, par
value $0.001 per
share
2,500,000 shares
$14.95
$37,375,000
$4,000
(1)
Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "Securities
Act"), this registration statement includes an indeterminate number of additional shares which may
be offered and issued to prevent dilution resulting from stock splits, stock dividends or similar
transactions. In addition, this registration statement covers
related  rights to purchase the Registrant's Series A Junior
Participating Preferred Stock registered on a Form 8-A filed with the
Securities and Exchange Commission on June 21, 2001 (the
"Stock Rights"). No additional consideration will be
received for the Stock Rights, which will initially trade together
with the Registrant's common stock.
(2)
Pursuant to Rule 457(h)(1) under the Securities Act, the offering price is estimated solely
for the purpose of calculating the registration fee on the basis of the average of the high and low
prices of the Registrant's Common Stock on the Nasdaq National
Market on May 22, 2006.
TABLE OF CONTENTS
PART I
PART II
Item 3. Incorporation of Documents by Reference
Item 4. Description of Securities
Item 5. Interests of Named Experts and Counsel
Item 6. Indemnification of Directors and Officers
Item 7. Exemption from Registration Claimed
Item 8. Exhibits
Item 9. Undertakings
SIGNATURES
EXHIBIT INDEX
EX-5.1  OPINION OF BASS, BERRY & SIMS PLC
EX-23.1  CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Table of Contents
PART I
Information Required in the Section 10(a) Prospectus
Luminex Corporation (the "Registrant") has sent or given or will send or give documents
containing the information specified by Part I of this Form S-8 Registration Statement (the
"Registration Statement") to participants in the plans to which this Registration Statement
relates, as specified in Rule 428(b)(1) promulgated by the Securities and Exchange Commission (the
"SEC") under the Securities Act of 1933, as amended (the "Securities Act"). The Registrant is not
filing such documents with the SEC, but these documents constitute (along with the documents
incorporated by reference into the Registration Statement pursuant to Item 3 of Part II hereof) a
prospectus that meets the requirements of Section 10(a) of the Securities Act.
Table of Contents
PART II
Information Required in the Registration Statement
Item 3.
Incorporation of Documents by Reference
.
The following documents filed by the Registrant with the SEC, pursuant to the Securities Act
or the Securities Exchange Act of 1934, as amended (the "Exchange Act"), are hereby incorporated by
reference and shall be deemed to be a part hereof from the date of filing of such document:
(1)
The Registrant's Annual Report on Form 10-K for the fiscal year ended December 31, 2005;
(2)
The Registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2006;
(3)
The Registrant's Current Reports on Form 8-K filed with the SEC on February 1, 2006, February
15, 2006, April 11, 2006, and April 26, 2006; and
(4)
The description of the Registrant's Common Stock, par value $0.001 per share, contained in
the Registrant's Registration Statement on Form 8-A, filed with
the SEC on March 27, 2000, and the description of the Stock
Rights contained in the Registrant's Registration Statement on Form 8-A, filed with the SEC on June 21, 2001, and
including all other amendments and reports filed for the purpose of updating such descriptions.
All documents filed by the Registrant pursuant to Section 13(a), 13(c), 14 and 15(d) of the
Exchange Act after the date hereof and prior to the filing of a post-effective amendment to this
Registration Statement which indicates that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference
herein and to be a part hereof from the date of filing of such documents. Any statements contained
in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be
modified or replaced for purposes hereof to the extent that a statement contained herein (or in any
other subsequently filed document which also is incorporated or deemed to be incorporated by
reference herein) modifies or replaces such statement. Any statement so modified or replaced shall
not be deemed, except as so modified or replaced, to constitute a part hereof.
Notwithstanding the foregoing, information furnished under Items 2.02 and 7.01 of any Current
Report on Form 8-K, including the related exhibits, is not incorporated by reference in this
Registration Statement or the related prospectus.
Item 4.
Description of Securities
.
Not applicable.
Item 5.
Interests of Named Experts and Counsel
.
Not applicable.
Item 6.
Indemnification of Directors and Officers
.
Section 145 of the Delaware General Corporation Law (the "DGCL") permits a Delaware
corporation to indemnify any person who was or is a party or is threatened to be made a party to
any threatened, pending or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative (other than an action by or in the right of the corporation) by
reason of the fact that he or she is or was a director, officer, employee or agent of the
corporation) or is or was serving at the request of the corporation as a director, officer,
employee or agent of another corporation or enterprise. A corporation may indemnify against
expenses (including attorneys' fees), judgments, fines and amounts paid in settlement actually and
reasonably incurred in connection with such action, suit or proceeding if the person indemnified
acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the
best interests of the corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his or her conduct was unlawful. If the person indemnified is not
wholly successful in
such action, suit or proceeding, but is successful, on the merits or otherwise, in one or more
but less than all claims,
Table of Contents
issues or matters in such proceeding, he or she may be indemnified
against expenses actually and reasonably incurred in connection with each successfully resolved
claim, issue or matter. In the case of an action or suit by or in the right of the corporation to
procure a judgment in its favor, no indemnification may be made in respect to any claim, issue or
matter as to which such person shall have been adjudged to be liable to the corporation unless and
only to the extent that the Court of Chancery of the State of Delaware, or the court in which such
action or suit was brought, shall determine upon application that, despite the adjudication of
liability, such person is fairly and reasonably entitled to indemnity for such expenses which the
court shall deem proper. Section 145 provides that, to the extent a present or former director or
officer of a corporation has been successful in the defense of any action, suit or proceeding
referred to above or in the defense of any claim, issue or manner therein, he or she shall be
indemnified against expenses (including attorneys' fees) actually and reasonably incurred by him or
her in connection therewith.
Article V of the Registrant's restated certificate of incorporation (the "Certificate")
provides that, except to the extent prohibited by the DGCL, the Registrant's directors shall not be
personally liable to it or its stockholders for monetary damages for breach of their fiduciary duty
as directors. Under the DGCL, the directors have a fiduciary duty to the Registrant which is not
eliminated by this provision of the Certificate and, in appropriate circumstances, equitable
remedies such as injunctive or other forms of non-monetary relief will remain available. In
addition, each director will continue to be subject to liability under the DGCL for breach of his
or her duty of loyalty to the Registrant or its stockholders; for acts or omissions which are found
by a court of competent jurisdiction to be not in good faith or which involve intentional
misconduct or knowing violations of law; for actions leading to improper personal benefit to the
director; and for payment of dividends or approval of stock repurchases or redemptions that are
prohibited by the DGCL. This provision also does not affect the directors' responsibilities under
any other laws, such as the federal securities laws or state or federal environmental laws.
Article VI of the Certificate permits indemnification of any director or officer, as well as
any employee or agent of the Registrant, or any individual serving in such capacity for another
entity at the Registrant's request, for all expenses, judgments, fines, and amounts paid in
settlement so long as he or she acted in good faith and in a manner he or she reasonably believed
to be in, or not opposed to, the best interests of the Registrant, and, with respect to a criminal
proceeding, if he or she had no reasonable cause to believe his or her conduct was unlawful.
However, with respect to any action by or in the right of the Registrant, such a person will be
entitled to indemnification only if he or she acted in good faith and in a manner he or she
believed to be in, or not opposed to, the Registrant's best interests and, if he or she is adjudged
liable, only to the extent that the Court of Chancery of Delaware finds that he or she is
reasonably entitled to indemnification.
Article VI of the Certificate also authorizes the Registrant to assume the defense of an
indemnitee in any action, suit, proceeding or investigation in which indemnity is sought. In the
event that the Registrant does not assume the defense of an indemnitee, it may advance litigation
expenses to an indemnitee prior to the final disposition of an action concerning the indemnitee's
service. The making of such advances is conditioned upon the indemnitee giving the Registrant an
undertaking to repay the amount advanced if indemnification ultimately is deemed unavailable.
If indemnification or advancement of expenses is authorized, it will not exclude any rights to
indemnification or advancement of expenses which any person may have under a bylaw, agreement,
board or stockholder vote, or otherwise. The indemnification or advancement of expenses provided by
Article IX will continue as to a person who ceases to be a director, officer, employee, or agent.
The Certificate also states that the Registrant may maintain insurance, at its expense, to
protect itself and any director, officer, employee or agent of the Registrant or another
corporation against any loss, liability, or expense, whether or not the Registrant would have the
power to provide indemnification under the DGCL, as the Board of Directors may from time to time
determine. The Registrant has obtained directors' and officers' liability insurance, the effect of
which is to indemnify its directors and officers against certain damages and expenses because of
certain claims made against them caused by their negligent act, error or omission.
The Registrant has entered into Indemnification Agreements with each of its directors to give
such directors additional contractual assurances regarding the scope of indemnification set forth
in the Certificate and to provide additional procedural protections. At present, there is no
pending litigation or proceeding involving a director,
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officer or employee of the Registrant in
which indemnification is sought, nor is the Registrant aware of any threatened litigation that may
result in claims for indemnification.
Item 7.
Exemption from Registration Claimed
.
None.
Item 8.
Exhibits
.
4.1*
Restated Certificate of Incorporation of the Company
4.2*
Amended and Restated Bylaws of the Company
4.3**
Rights Agreement dated as of June 21, 2001 between Luminex Corporation and
Mellon Investor Services, LLC, as Rights Agent, which includes as Exhibit A
the form of Certificate of Designations of Series A Junior Participating
Preferred Stock, as Exhibit B the Form of Rights Certificate and as Exhibit
C the Summary of Rights
10.1***
Luminex Corporation 2006 Equity Incentive Plan
10.2****
Luminex Corporation 2006 Management Stock Purchase Plan
5.1
Opinion of Bass, Berry & Sims PLC
23.1
Consent of Independent Registered Public Accounting Firm
23.2
Consent of Bass, Berry & Sims PLC (included in the Opinion of Bass, Berry &
Sims PLC filed herewith as Exhibit 5.1)
24.1
Power of Attorney (included on signature page of this Registration Statement)
*
Previously filed as an Exhibit to the Company's Registration
Statement on Form S-1 (File No. 333-96317), filed February 7, 2000,
as amended, and incorporated herein by this reference.
**
Previously filed as Exhibit 4 to the Company's Current Report on Form
8-K dated June 20, 2001, and incorporated herein by this reference.
***
Previously filed as Exhibit A to the Company's Proxy Statement for
its Annual Meeting of Stockholders held on May 25, 2006, and
incorporated herein by this reference.
****
Previously filed as Exhibit B to the Company's Proxy Statement for
its Annual Meeting of Stockholders held on May 25, 2006, and
incorporated herein by this reference.
Item 9.
Undertakings
.
A. The Registrant hereby undertakes:
(1) To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;
(ii) To reflect in the prospectus any facts or events arising after the effective date of this
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 this Registration
Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of
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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 SEC pursuant to Rule 424(b) if, in the aggregate, the changes
in volume and price represent no more than 20% change in the maximum aggregate offering price set
forth in the "Calculation of Registration Fee" table in the effective registration statement; and
(iii) To include any material information with respect to the plan of distribution not
previously disclosed in this Registration Statement or any material change to such information in
this Registration Statement;
Provided, however,
that clauses (a)(1)(i) and (a)(1)(ii) shall not apply if the information
required to be included in a post-effective amendment by those paragraphs is contained in periodic
reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or
Section 15(d) of the Exchange Act that are incorporated by reference into this Registration
Statement.
(2) That, for the purpose of determining any liability under the Securities Act, 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.
(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.
B. The Registrant hereby undertakes that, for purposes of determining any liability under the
Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or 15(d) of
the Exchange Act (and where applicable, each filing of an employee benefit plan's annual report
pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in this
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
bona fide
offering thereof.
C. Insofar as indemnification for liabilities arising under the Securities Act 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 SEC
such indemnification is against public policy as expressed in the Securities Act and is, therefore,
unenforceable. 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 and will be
governed by the final adjudication of such issue.
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Table of Contents
SIGNATURES
Pursuant to the requirements of the Securities Act, 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 Austin, State of Texas, on this 25th
day of May, 2006.
LUMINEX CORPORATION
By:
/s/ Patrick J. Balthrop
Patrick J. Balthrop
President and Chief
Executive Officer
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENT, that each person whose signature appears below constitutes
and appoints Patrick J. Balthrop and Harriss T. Currie and each of them his or her true and lawful
attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her
and in his or her name, place and stead, in any and all capacities, to sign any and all amendments
(including post-effective amendments) to this Registration Statement, and to file the same, with
the SEC, granting unto said attorneys-in-fact and agents, full power and authority to do and
perform each and every act and thing requisite and necessary to be done in and about the premises,
as fully to all intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed below by the following persons in the capacities and on the dates indicated.
Signatures
Title
Date
/s/ Patrick
J. Balthrop
Patrick
J. Balthrop
President and Chief
Executive Officer
(Principal Executive Officer)
May 25, 2006
/s/ Harriss
T. Currie
Harriss
T. Currie
Vice President, Finance and
Chief
Financial Officer
(Principal Financial Officer)
May 25, 2006
/s/ Jay
B. Johnston
Jay
B. Johnston
Director
May 25, 2006
/s/ Robert
J. Cresci
Robert
J. Cresci
Director
May 25, 2006
/s/ Thomas
W. Erickson
Thomas
W. Erickson
Director
May 25, 2006
/s/ Fred
C. Goad, Jr.
Fred
C. Goad, Jr.
Director
May 25, 2006
/s/ Gerard
Vaillant
Gerard
Vaillant
Director
May 25, 2006
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Table of Contents
Signatures
Title
Date
/s/ Jim
D. Kever
Jim
D. Kever
Director
May 25, 2006
/s/ G.
Walter Loewenbaum II
G.
Walter Loewenbaum II
Chairman of the Board of Directors,
Director
May 25, 2006
/s/ Kevin
M. McNamara
Kevin
M. McNamara
Director
May 25, 2006
/s/ J.
Stark Thompson
J.
Stark Thompson
Director
May 25, 2006
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Table of Contents
EXHIBIT INDEX
4.1*
Restated Certificate of Incorporation of the Company
4.2*
Amended and Restated Bylaws of the Company
4.3**
Rights Agreement dated as of June 21, 2001 between Luminex Corporation and
Mellon Investor Services, LLC, as Rights Agent, which includes as Exhibit A
the form of Certificate of Designations of Series A Junior Participating
Preferred Stock, as Exhibit B the Form of Rights Certificate and as Exhibit
C the Summary of Rights
10.1***
Luminex Corporation 2006 Equity Incentive Plan
10.2****
Luminex Corporation 2006 Management Stock Purchase Plan
5.1
Opinion of Bass, Berry & Sims PLC
23.1
Consent of Independent Registered Public Accounting Firm
23.2
Consent of Bass, Berry & Sims PLC (included in the Opinion of Bass, Berry &
Sims PLC filed herewith as Exhibit 5.1)
24.1
Power of Attorney (included on signature page of this Registration Statement)
*
Previously filed as an Exhibit to the Company's Registration
Statement on Form S-1 (File No. 333-96317), filed February 7, 2000,
as amended, and incorporated herein by this reference.
**
Previously filed as Exhibit 4 to the Company's Current Report on Form
8-K dated June 20, 2001, and incorporated herein by this reference.
***
Previously filed as Exhibit A to the Company's Proxy Statement for
its Annual Meeting of Stockholders held on May 25, 2006, and
incorporated herein by this reference.
****
Previously filed as Exhibit B to the Company's Proxy Statement for
its Annual Meeting of Stockholders held on May 25, 2006, and
incorporated herein by this reference.
II-7