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<P align="right" style="font-size: 10pt"><B>REGISTRATION NO. 333-</B>



<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>






<P align="center" style="font-size: 14pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>

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


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<HR noshade width="26%" align="center" size="1" color="#000000">
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<P align="center" style="font-size: 18pt"><B>FORM S-8</B>

<DIV align="center" style="font-size: 10pt"><B>REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933</B></DIV>



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<HR noshade width="26%" align="center" size="1" color="#000000">
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<P align="center" style="font-size: 10pt"><B>INPUT/OUTPUT, INC.</B>


<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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<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
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<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>DELAWARE</B><BR>
(State or other jurisdiction<BR>
of incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>22-2286646</B><BR>
(I.R.S. Employer Identification No.)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><B>12300 PARC CREST DR.<BR>
STAFFORD, TEXAS 77477</B><BR>
(Address, including zip code, of principal executive offices)



<P align="center" style="font-size: 10pt"><B>INPUT/OUTPUT, INC. GX
TECHNOLOGY CORPORATION EMPLOYMENT<BR>
INDUCEMENT STOCK OPTION PROGRAM<BR>
and<BR>
INPUT/OUTPUT, INC. APRIL 2005 INDUCEMENT EQUITY PROGRAM</B><BR>
(Full Title of the Plan)



<P align="center" style="font-size: 10pt"><B>DAVID L. ROLAND, ESQ.<BR>
VICE PRESIDENT, GENERAL COUNSEL<BR>
AND CORPORATE SECRETARY<BR>
INPUT/OUTPUT, INC.<BR>
12300 PARC CREST DR.<BR>
STAFFORD, TEXAS 77477<BR>
(281)&nbsp;933-3339</B><BR>
(Name, address and telephone number of agent for service)



<P align="center" style="font-size: 10pt"><B>With copies to:<BR>
FULBRIGHT&#038; JAWORSKI L.L.P.<BR>
1301 MCKINNEY, SUITE 5100<BR>
HOUSTON, TEXAS 77010<BR>
ATTENTION: MARC H. FOLLADORI<BR>
(713)&nbsp;651-5151</B>



<P align="center" style="font-size: 10pt"><B>CALCULATION OF REGISTRATION FEE</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="60%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Title of securities</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount to</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>maximum offering</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>aggregate offering</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount of</B></TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>to be registered</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>be registered</B><SUP style="font-size: 85%; vertical-align: text-top"><B>(1)(2)</B></SUP></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>price per share</B><SUP style="font-size: 85%; vertical-align: text-top"><B>(3)</B></SUP></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>price</B><SUP style="font-size: 85%; vertical-align: text-top"><B>(3)</B></SUP></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>registration fee</B></TD>
    <TD>&nbsp;</TD>
</TR>

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<TR style="font-size: 1px">
    <TD colspan="17" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD><DIV style="margin-left:15px; text-indent:-15px">Common Stock
$0.01 par value <SUP style="font-size: 85%; vertical-align: text-top">(1)</SUP></DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="center">509,000 shares</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
    <TD align="center">$6.41</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
    <TD align="center">$3,262,690</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
    <TD align="center">$384.02</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="17" align="left" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>
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</TABLE>
</DIV>



<P>
<HR size="1" width="18%" align="left" noshade color="#000000">

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

<TR valign="top">
    <TD width="1%" nowrap align="left">(1)</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="96%">This registration statement also covers (i)&nbsp;the associated rights to purchase Series&nbsp;A Preferred Stock, par value $0.01 per share,
issued pursuant to that certain Rights Agreement dated as of January&nbsp;17, 1997, by and between the Registrant and Harris Trust and
Savings Bank, as Rights Agent, as amended by the First Amendment to Rights Agreement, dated effective as of April&nbsp;21, 1999, and (ii)
an indeterminate number of shares that may become issuable pursuant to certain anti-dilution adjustment provisions under the option
award agreements entered into between the Registrant and individual participants in the Input/Output, Inc. GX Technology Corporation
Employment Inducement Stock Option Program and under the Input/Output, Inc. April&nbsp;2005 Inducement Equity Program pursuant to Rule
416(a) under the Securities Act of 1933.</TD>
</TR>

<TR><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD width="1%" nowrap align="left">(2)</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="96%">This registration statement covers 434,000 shares of the Registrant&#146;s Common Stock issuable pursuant to the Input/Output, Inc. GX
Technology Corporation Employment Inducement Stock Option Program, evidenced by stock option award agreements entered into between
the Registrant and the individual participants in such program.</TD>
</TR>

</TABLE>


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

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<!-- 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>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
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	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">INTRODUCTORY STATEMENT</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">PART I INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS</A></TD></TR>
<TR><TD colspan="9"><A HREF="#002">PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;3. Incorporation of Documents by Reference</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;4. Description of Securities</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">Item&nbsp;5. Interests of Named Experts and Counsel</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;6. Indemnification of Directors and Officers</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">Item&nbsp;7. Exemption from Registration Claimed</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#008">Item&nbsp;8. Exhibits</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#009">Item&nbsp;9. Undertakings</A></TD></TR>
<TR><TD colspan="9"><A HREF="#010">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#011">POWER OF ATTORNEY</A></TD></TR>
<TR><TD colspan="9"><A HREF="#012">INDEX TO EXHIBITS</A></TD></TR>
<TR><TD colspan="9"><A HREF="h24066exv4w1.htm">Form of Stock Option Award Agreement</A></TD></TR>
<TR><TD colspan="9"><A HREF="h24066exv4w2.htm">Stock Option Agreement</A></TD></TR>
<TR><TD colspan="9"><A HREF="h24066exv4w3.htm">Restricted Stock Agreement</A></TD></TR>
<TR><TD colspan="9"><A HREF="h24066exv5w1.htm">Opinion of Fulbright & Jaworski L.L.P.</A></TD></TR>
<TR><TD colspan="9"><A HREF="h24066exv23w1.htm">Consent of PricewaterhouseCoopers LLP</A></TD></TR>
</TABLE>
</CENTER>
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<P>

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

<TR valign="top">
    <TD width="1%" nowrap align="left">(3)</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="96%">The offering price per share and the aggregate offering price have been estimated solely for purposes of calculating the
registration fee pursuant to Rule 457(c) and Rule 457(h) under the Securities Act of 1933 on the basis of the average high and low
sale prices for the registrant&#146;s shares of common stock as reported on the New York Stock Exchange
composite transactions on April&nbsp;1, 2005 ($6.41&nbsp;per share).</TD>
</TR>

</TABLE>




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

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



<!-- link1 "INTRODUCTORY STATEMENT" -->
<DIV align="left"><A NAME="000"></A></DIV>

<P align="center" style="font-size: 10pt"><B>INTRODUCTORY STATEMENT</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Input/Output, Inc. (the &#147;<U>Registrant</U>&#148;) is filing this Registration Statement on
Form S-8 (this &#147;<U>Registration Statement</U>&#148;) under the Securities Act of 1933, as amended (the
&#147;<U>Securities Act</U>&#148;), with the Securities and Exchange Commission (the &#147;<U>Commission</U>&#148;)
to register 75,000 shares of common stock, $0.01 par value per share, of the Registrant (the
&#147;<U>Common Stock</U>&#148;) for issuance to TengBeng Koid, a new employee of the Registrant, under the
Input/Output, Inc. April&nbsp;2005 Inducement Equity Program. Under the Input/Output, Inc. April&nbsp;2005
Inducement Equity Program, up to 55,000 shares of Common Stock may be issued upon the exercise of
stock options to be granted to TengBeng Koid under a Stock Option Agreement and up to 20,000 shares
of restricted Common Stock are to be issued to him under a Restricted Stock Agreement, in each case
as a material inducement to his joining the Registrant.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Registration Statement also registers 434,000 shares of Common Stock for issuance upon
the exercise of employment inducement stock option awards granted to certain employees of GX
Technology Corporation, under a program known as the Input/Output, Inc. GX Technology Corporation
Employment Inducement Stock Option Program, as a material inducement to their joining the
Registrant.

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<DIV align="left"><A NAME="001"></A></DIV>

<P align="center" style="font-size: 10pt"><B>PART I<BR>
INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The information required by Part&nbsp;I of Form S-8 to be contained in a Section 10(a) prospectus
is omitted from this Registration Statement in accordance with Rule&nbsp;428 of the Securities Act and
the Note to Part&nbsp;I of Form S-8.


<!-- link1 "PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
<DIV align="left"><A NAME="002"></A></DIV>

<P align="center" style="font-size: 10pt"><B>PART II<BR>
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>


<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference" -->
<DIV align="left"><A NAME="003"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;3. Incorporation of Documents by Reference</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents have been filed by the Registrant with the Commission and are
incorporated into this Registration Statement by reference:


<P>
<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="5%" style="background: transparent">&nbsp;</TD>
    <TD width="4%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The Registrant&#146;s Annual Report on Form 10-K for the fiscal year ended December&nbsp;31,
2004, filed with the Commission on March&nbsp;16, 2005 pursuant to Section 13(a) of the
Securities and Exchange Act of 1934, as amended (the &#147;<U>Exchange Act</U>&#148;);</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="5%" style="background: transparent">&nbsp;</TD>
    <TD width="4%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The Registrant&#146;s Current Reports on Form 8-K filed with the Commission on February
17, 2005, March&nbsp;22, 2005 and March&nbsp;28, 2005, pursuant to Section 13(a) of the Exchange
Act;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="5%" style="background: transparent">&nbsp;</TD>
    <TD width="4%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The description of the Registrant&#146;s common stock contained in the Registration
Statement on Form 8-A filed with the Commission on October&nbsp;17, 1994, filed under</TD>
</TR>

</TABLE>


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

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

<P>
<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="1%" nowrap align="left">&nbsp;&nbsp;&nbsp;</TD>
    <TD>Section&nbsp;12(b) of the Exchange Act, as amended by the Registrant&#146;s Current Report on Form
8-K filed on March&nbsp;8, 2002; and</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The Registrant&#146;s Registration Statement on Form 8-A12B filed with the Commission on
January&nbsp;27, 1997, as amended by Form 8-A12B/A filed on May&nbsp;7, 1999.</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents filed by the Registrant with the Commission pursuant to Sections&nbsp;13(a), 13(c),
14 and 15(d) of the Exchange Act subsequent to the filing date of this Registration Statement and
prior to the filing of a post-effective amendment to this Registration Statement which indicates
that all securities offered have been sold or which deregisters all securities then remaining
unsold, shall be deemed to be incorporated by reference into this Registration Statement and to be
a part hereof from the date of filing of each such document.

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<DIV align="left"><A NAME="004"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;4. Description of Securities</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

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<DIV align="left"><A NAME="005"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

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<DIV align="left"><A NAME="006"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;6. Indemnification of Directors and Officers</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The General Corporation Law of the State of Delaware (&#147;<U>DGCL</U>&#148;) permits the Registrant
and its stockholders to limit directors&#146; exposure to liability for certain breaches of the
directors&#146; fiduciary duty. The Restated Certificate of Incorporation of the Registrant, as amended
(the &#147;<U>Charter</U>&#148;), provides that a director of the Registrant shall not be personally liable
to the Registrant or its stockholders for monetary damages for breach of fiduciary duty as a
director, except for liability (i)&nbsp;for any breach of the director&#146;s duty of loyalty to the
Registrant or its stockholders, (ii)&nbsp;for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii)&nbsp;under Section&nbsp;174 of the DGCL or (iv)
for any transaction from which the director derived an improper personal benefit.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Amended and Restated Bylaws of the Registrant (the &#147;<U>Bylaws</U>&#148;) provide that the
Registrant shall, to the full extent permitted by applicable laws (including the DGCL), indemnify
its directors, officers, employees and agents with respect to expenses (including counsel fees),
judgments, fines, penalties and other liabilities and amounts incurred by any such person in
connection with any threatened, pending or completed action, suit or proceeding to which such
person is or was a party, or is or was threatened to be made a party, by reason of the fact that
such person is or was serving as a director, officer, employee or agent of the Registrant or any of
its direct or indirect wholly owned subsidiaries, or is or was serving at the request of the
Registrant or any of its direct or indirect wholly owned subsidiaries as a director, officer,
employee, agent or trustee of another corporation, partnership, joint venture, trust, employee
benefit plan or other enterprise. The Bylaws provide that the indemnification provided pursuant to
the Bylaws is not exclusive of any other rights to which those seeking indemnification may be
entitled under any provision of law, certificate of incorporation, bylaws, governing documents,


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

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



<P align="left" style="font-size: 10pt">agreement, vote of stockholders or disinterested directors of the Registrant or any of its
direct or indirect wholly owned subsidiaries, or otherwise.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant maintains a standard form of officers&#146; and directors&#146; liability insurance
policy which provides coverage to the officers and directors of the Registrant for certain
liabilities, including certain liabilities which may arise out of this Registration Statement.

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<DIV align="left"><A NAME="007"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;7. Exemption from Registration Claimed</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

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<DIV align="left"><A NAME="008"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;8. Exhibits</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="9%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="86%">&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">Form of Stock Option Award Agreement pursuant to which participants
in the Input/Output, Inc. GX Technology Corporation Employment
Inducement Stock Option Program are to be granted employment
inducement stock options to purchase shares of Common Stock of the
Registrant under such program.</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>
</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">Stock Option Agreement pursuant to which TengBeng Koid is to be
granted stock options to purchase shares of Common Stock of the
Registrant, under the Input/Output, Inc. April&nbsp;2005 Inducement Equity
Program.</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>
</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">Restricted Stock Agreement pursuant to which TengBeng Koid is to be
issued restricted Common Stock of the Registrant under the
Input/Output, Inc. April&nbsp;2005 Inducement Equity Program.</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>
</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 Fulbright &#038; Jaworski L.L.P.</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>
</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 PricewaterhouseCoopers LLP.</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>
</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 Fulbright &#038; Jaworski L.L.P. (included in the opinion of
Fulbright &#038; Jaworski L.L.P. filed as Exhibit&nbsp;5.1 hereto).</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>
</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 the signature page hereto).</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<!-- link2 "Item&nbsp;9. Undertakings" -->
<DIV align="left"><A NAME="009"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;9. Undertakings</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A.&nbsp;Undertaking to Update


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The undersigned Registrant hereby undertakes:


<P align="left" style="font-size: 10pt">&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:



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


<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">


<P align="left" style="margin-left:3%; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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 hereof) 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 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&nbsp;percent change in the maximum aggregate
offering price set forth in the &#147;Calculation of Registration Fee&#148; table in this Registration
Statement; and



<P align="left" style="margin-left:3%; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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;


<P align="left" style="margin-left: 0%; text-indent: 0%; margin-right: 0%; font-size: 10pt">provided, however, that paragraphs (i)&nbsp;and (ii)&nbsp;above do 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 15(d) of the
Exchange Act that are incorporated by reference in this Registration Statement.


<P align="left" style="font-size: 10pt">&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 bona fide offering thereof.


<P align="left" style="font-size: 10pt">&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.


<P align="left" style="font-size: 10pt">B. Undertaking With Respect to Documents Incorporated by Reference



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The undersigned 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 that is incorporated by reference in this Registration Statement shall
be deemed to be a new registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona fide offering
thereof.


<P align="left" style="font-size: 10pt">C. Undertaking With Respect to Indemnification



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&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 Commission
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


<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">



<P align="left" style="font-size: 10pt">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.


<P align="center" style="font-size: 10pt">II-7
</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="010"></A></DIV>

<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>



<P align="left" style="font-size: 10pt">&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 Stafford, State of Texas, on April&nbsp;4, 2005.


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><B>INPUT/OUTPUT, INC.</B><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">     /s/ J. Michael Kirksey
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">J. Michael Kirksey&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Executive Vice President
and Chief Financial Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>
<!-- link1 "POWER OF ATTORNEY" -->
<DIV align="left"><A NAME="011"></A></DIV>

<P align="center" style="font-size: 10pt"><B>POWER OF ATTORNEY</B>




<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints J. Michael Kirksey and David L. Roland, and each of them, his true and lawful
attorneys-in-fact and agents, with full power of substitution and resubstitution for him and in his
name, place and stead, in any and all capacities, to sign, execute and file this registration
statement under the Securities Act and any and all amendments (including, without limitation,
post-effective amendments and any amendment or amendments or additional registration statement
filed pursuant to Rule&nbsp;462 under the Securities Act increasing the amount of securities for which
registration is being sought) to this Registration Statement, and to file the same, with all
exhibits thereto, and any and all other documents in connection therewith, with the Commission, to
sign any and all applications, registration statements, notices or other documents necessary or
advisable to comply with the applicable state securities laws, and to file the same, together with
other documents in connection therewith, with the appropriate state securities authorities,
granting unto said attorney-in-fact and agents full power and authority to do and perform each and
every act and thing requisite and necessary to be done, 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 any of them, or their or his substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the dates indicated.


<P align="center" style="font-size: 10pt">II-8
</DIV>

<!-- PAGEBREAK -->
<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="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="34%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="26%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">SIGNATURE</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">TITLE</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">DATE</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Robert P. Peebler
<HR size="1" noshade color="#000000">
Robert P. Peebler</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
President, Chief Executive Officer
and Director
(principal executive officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ J. Michael Kirksey
<HR size="1" noshade color="#000000">
J. Michael Kirksey</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Executive Vice President
and Chief Financial Officer
(principal financial officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Michael L. Morrison
<HR size="1" noshade color="#000000">
Michael L. Morrison</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Controller and Director of Accounting
(principal accounting officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ James M. Lapeyre, Jr.
<HR size="1" noshade color="#000000">
James M. Lapeyre, Jr.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Chairman of the Board of
Directors and Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Bruce S. Appelbaum
<HR size="1" noshade color="#000000">
Bruce S. Appelbaum</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;
<HR size="1" noshade color="#000000">
Theodore H. Elliott, Jr.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ Franklin Myers
<HR size="1" noshade color="#000000">
Franklin Myers</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ S. James Nelson, Jr.
<HR size="1" noshade color="#000000">
S. James Nelson, Jr.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">/s/ John N. Seitz
<HR size="1" noshade color="#000000">
John N. Seitz</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">April 4, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;</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" style="padding-top: 1em">
    <TD align="center" nowrap valign="top">&nbsp;
<HR size="1" noshade color="#000000">
Sam K. Smith</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt">II-9
</DIV>

<!-- PAGEBREAK -->
<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 "INDEX TO EXHIBITS" -->
<DIV align="left"><A NAME="012"></A></DIV>

<P align="center" style="font-size: 10pt"><B>INDEX TO EXHIBITS</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="9%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="86%">&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">Form of Stock Option Award Agreement pursuant to which
participants in the Input/Output, Inc. GX Technology Corporation
Employment Inducement Stock Option Program are to be granted
employment inducement stock options to purchase shares of Common
Stock of the Registrant under such program.</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>
</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">Stock Option Agreement pursuant to which TengBeng Koid is to be
granted stock options to purchase shares of Common Stock of the
Registrant, under the Input/Output, Inc. April&nbsp;2005 Inducement
Equity Program.</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>
</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">Restricted Stock Agreement pursuant to which TengBeng Koid is to
be issued restricted Common Stock of the Registrant under the
Input/Output, Inc. April&nbsp;2005 Inducement Equity Program.</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>
</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 Fulbright &#038; Jaworski L.L.P.</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>
</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 PricewaterhouseCoopers LLP.</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>
</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 Fulbright &#038; Jaworski L.L.P. (included in the opinion
of Fulbright &#038; Jaworski L.L.P. filed as Exhibit&nbsp;5.1 hereto).</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>
</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 the signature page hereto).</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



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

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sv8
Table of Contents
REGISTRATION NO. 333-
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
INPUT/OUTPUT, INC.
(Exact name of registrant as specified in its charter)
DELAWARE
(State or other jurisdiction
of incorporation or organization)
22-2286646
(I.R.S. Employer Identification No.)
12300 PARC CREST DR.
STAFFORD, TEXAS 77477
(Address, including zip code, of principal executive offices)
INPUT/OUTPUT, INC. GX
TECHNOLOGY CORPORATION EMPLOYMENT
INDUCEMENT STOCK OPTION PROGRAM
and
INPUT/OUTPUT, INC. APRIL 2005 INDUCEMENT EQUITY PROGRAM
(Full Title of the Plan)
DAVID L. ROLAND, ESQ.
VICE PRESIDENT, GENERAL COUNSEL
AND CORPORATE SECRETARY
INPUT/OUTPUT, INC.
12300 PARC CREST DR.
STAFFORD, TEXAS 77477
(281) 933-3339
(Name, address and telephone number of agent for service)
With copies to:
FULBRIGHT& JAWORSKI L.L.P.
1301 MCKINNEY, SUITE 5100
HOUSTON, TEXAS 77010
ATTENTION: MARC H. FOLLADORI
(713) 651-5151
CALCULATION OF REGISTRATION FEE
Proposed
Proposed maximum
Title of securities
Amount to
maximum offering
aggregate offering
Amount of
to be registered
be registered
(1)(2)
price per share
(3)
price
(3)
registration fee
Common Stock
$0.01 par value
(1)
509,000 shares
$6.41
$3,262,690
$384.02
(1)
This registration statement also covers (i) the associated rights to purchase Series A Preferred Stock, par value $0.01 per share,
issued pursuant to that certain Rights Agreement dated as of January 17, 1997, by and between the Registrant and Harris Trust and
Savings Bank, as Rights Agent, as amended by the First Amendment to Rights Agreement, dated effective as of April 21, 1999, and (ii)
an indeterminate number of shares that may become issuable pursuant to certain anti-dilution adjustment provisions under the option
award agreements entered into between the Registrant and individual participants in the Input/Output, Inc. GX Technology Corporation
Employment Inducement Stock Option Program and under the Input/Output, Inc. April 2005 Inducement Equity Program pursuant to Rule
416(a) under the Securities Act of 1933.
(2)
This registration statement covers 434,000 shares of the Registrant's Common Stock issuable pursuant to the Input/Output, Inc. GX
Technology Corporation Employment Inducement Stock Option Program, evidenced by stock option award agreements entered into between
the Registrant and the individual participants in such program.
TABLE OF CONTENTS
INTRODUCTORY STATEMENT
PART I INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS
PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
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
POWER OF ATTORNEY
INDEX TO EXHIBITS
Form of Stock Option Award Agreement
Stock Option Agreement
Restricted Stock Agreement
Opinion of Fulbright & Jaworski L.L.P.
Consent of PricewaterhouseCoopers LLP
Table of Contents
(3)
The offering price per share and the aggregate offering price have been estimated solely for purposes of calculating the
registration fee pursuant to Rule 457(c) and Rule 457(h) under the Securities Act of 1933 on the basis of the average high and low
sale prices for the registrant's shares of common stock as reported on the New York Stock Exchange
composite transactions on April 1, 2005 ($6.41 per share).
Table of Contents
INTRODUCTORY STATEMENT
Input/Output, Inc. (the "
Registrant
") is filing this Registration Statement on
Form S-8 (this "
Registration Statement
") under the Securities Act of 1933, as amended (the
"
Securities Act
"), with the Securities and Exchange Commission (the "
Commission
")
to register 75,000 shares of common stock, $0.01 par value per share, of the Registrant (the
"
Common Stock
") for issuance to TengBeng Koid, a new employee of the Registrant, under the
Input/Output, Inc. April 2005 Inducement Equity Program. Under the Input/Output, Inc. April 2005
Inducement Equity Program, up to 55,000 shares of Common Stock may be issued upon the exercise of
stock options to be granted to TengBeng Koid under a Stock Option Agreement and up to 20,000 shares
of restricted Common Stock are to be issued to him under a Restricted Stock Agreement, in each case
as a material inducement to his joining the Registrant.
This Registration Statement also registers 434,000 shares of Common Stock for issuance upon
the exercise of employment inducement stock option awards granted to certain employees of GX
Technology Corporation, under a program known as the Input/Output, Inc. GX Technology Corporation
Employment Inducement Stock Option Program, as a material inducement to their joining the
Registrant.
PART I
INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS
The information required by Part I of Form S-8 to be contained in a Section 10(a) prospectus
is omitted from this Registration Statement in accordance with Rule 428 of the Securities Act and
the Note to Part I of Form S-8.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference
The following documents have been filed by the Registrant with the Commission and are
incorporated into this Registration Statement by reference:
•
The Registrant's Annual Report on Form 10-K for the fiscal year ended December 31,
2004, filed with the Commission on March 16, 2005 pursuant to Section 13(a) of the
Securities and Exchange Act of 1934, as amended (the "
Exchange Act
");
•
The Registrant's Current Reports on Form 8-K filed with the Commission on February
17, 2005, March 22, 2005 and March 28, 2005, pursuant to Section 13(a) of the Exchange
Act;
•
The description of the Registrant's common stock contained in the Registration
Statement on Form 8-A filed with the Commission on October 17, 1994, filed under
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Section 12(b) of the Exchange Act, as amended by the Registrant's Current Report on Form
8-K filed on March 8, 2002; and
•
The Registrant's Registration Statement on Form 8-A12B filed with the Commission on
January 27, 1997, as amended by Form 8-A12B/A filed on May 7, 1999.
All documents filed by the Registrant with the Commission pursuant to Sections 13(a), 13(c),
14 and 15(d) of the Exchange Act subsequent to the filing date of this Registration Statement and
prior to the filing of a post-effective amendment to this Registration Statement which indicates
that all securities offered have been sold or which deregisters all securities then remaining
unsold, shall be deemed to be incorporated by reference into this Registration Statement and to be
a part hereof from the date of filing of each such document.
Item 4. Description of Securities
Not applicable.
Item 5. Interests of Named Experts and Counsel
Not applicable.
Item 6. Indemnification of Directors and Officers
The General Corporation Law of the State of Delaware ("
DGCL
") permits the Registrant
and its stockholders to limit directors' exposure to liability for certain breaches of the
directors' fiduciary duty. The Restated Certificate of Incorporation of the Registrant, as amended
(the "
Charter
"), provides that a director of the Registrant shall not be personally liable
to the Registrant or its stockholders for monetary damages for breach of fiduciary duty as a
director, except for liability (i) for any breach of the director's duty of loyalty to the
Registrant or its stockholders, (ii) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii) under Section 174 of the DGCL or (iv)
for any transaction from which the director derived an improper personal benefit.
The Amended and Restated Bylaws of the Registrant (the "
Bylaws
") provide that the
Registrant shall, to the full extent permitted by applicable laws (including the DGCL), indemnify
its directors, officers, employees and agents with respect to expenses (including counsel fees),
judgments, fines, penalties and other liabilities and amounts incurred by any such person in
connection with any threatened, pending or completed action, suit or proceeding to which such
person is or was a party, or is or was threatened to be made a party, by reason of the fact that
such person is or was serving as a director, officer, employee or agent of the Registrant or any of
its direct or indirect wholly owned subsidiaries, or is or was serving at the request of the
Registrant or any of its direct or indirect wholly owned subsidiaries as a director, officer,
employee, agent or trustee of another corporation, partnership, joint venture, trust, employee
benefit plan or other enterprise. The Bylaws provide that the indemnification provided pursuant to
the Bylaws is not exclusive of any other rights to which those seeking indemnification may be
entitled under any provision of law, certificate of incorporation, bylaws, governing documents,
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agreement, vote of stockholders or disinterested directors of the Registrant or any of its
direct or indirect wholly owned subsidiaries, or otherwise.
The Registrant maintains a standard form of officers' and directors' liability insurance
policy which provides coverage to the officers and directors of the Registrant for certain
liabilities, including certain liabilities which may arise out of this Registration Statement.
Item 7. Exemption from Registration Claimed
Not applicable.
Item 8. Exhibits
4.1
Form of Stock Option Award Agreement pursuant to which participants
in the Input/Output, Inc. GX Technology Corporation Employment
Inducement Stock Option Program are to be granted employment
inducement stock options to purchase shares of Common Stock of the
Registrant under such program.
4.2
Stock Option Agreement pursuant to which TengBeng Koid is to be
granted stock options to purchase shares of Common Stock of the
Registrant, under the Input/Output, Inc. April 2005 Inducement Equity
Program.
4.3
Restricted Stock Agreement pursuant to which TengBeng Koid is to be
issued restricted Common Stock of the Registrant under the
Input/Output, Inc. April 2005 Inducement Equity Program.
5.1
Opinion of Fulbright & Jaworski L.L.P.
23.1
Consent of PricewaterhouseCoopers LLP.
23.2
Consent of Fulbright & Jaworski L.L.P. (included in the opinion of
Fulbright & Jaworski L.L.P. filed as Exhibit 5.1 hereto).
24.1
Power of Attorney (included on the signature page hereto).
Item 9. Undertakings
A. Undertaking to Update
The undersigned 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;
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(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 hereof) 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 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 "Calculation of Registration Fee" table in this 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 paragraphs (i) and (ii) above do 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 15(d) of the
Exchange Act that are incorporated by reference in 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. Undertaking With Respect to Documents Incorporated by Reference
The undersigned 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 that is incorporated by reference in this Registration Statement shall
be deemed to be a new registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona fide offering
thereof.
C. Undertaking With Respect to Indemnification
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 Commission
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
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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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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 Stafford, State of Texas, on April 4, 2005.
INPUT/OUTPUT, INC.
By:
/s/ J. Michael Kirksey
J. Michael Kirksey
Executive Vice President
and Chief Financial Officer
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints J. Michael Kirksey and David L. Roland, and each of them, his true and lawful
attorneys-in-fact and agents, with full power of substitution and resubstitution for him and in his
name, place and stead, in any and all capacities, to sign, execute and file this registration
statement under the Securities Act and any and all amendments (including, without limitation,
post-effective amendments and any amendment or amendments or additional registration statement
filed pursuant to Rule 462 under the Securities Act increasing the amount of securities for which
registration is being sought) to this Registration Statement, and to file the same, with all
exhibits thereto, and any and all other documents in connection therewith, with the Commission, to
sign any and all applications, registration statements, notices or other documents necessary or
advisable to comply with the applicable state securities laws, and to file the same, together with
other documents in connection therewith, with the appropriate state securities authorities,
granting unto said attorney-in-fact and agents full power and authority to do and perform each and
every act and thing requisite and necessary to be done, 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 any of them, or their 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 by the following persons in the capacities and on the dates indicated.
II-8
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SIGNATURE
TITLE
DATE
/s/ Robert P. Peebler
Robert P. Peebler
President, Chief Executive Officer
and Director
(principal executive officer)
April 4, 2005
/s/ J. Michael Kirksey
J. Michael Kirksey
Executive Vice President
and Chief Financial Officer
(principal financial officer)
April 4, 2005
/s/ Michael L. Morrison
Michael L. Morrison
Controller and Director of Accounting
(principal accounting officer)
April 4, 2005
/s/ James M. Lapeyre, Jr.
James M. Lapeyre, Jr.
Chairman of the Board of
Directors and Director
April 4, 2005
/s/ Bruce S. Appelbaum
Bruce S. Appelbaum
Director
April 4, 2005
Theodore H. Elliott, Jr.
Director
/s/ Franklin Myers
Franklin Myers
Director
April 4, 2005
/s/ S. James Nelson, Jr.
S. James Nelson, Jr.
Director
April 4, 2005
/s/ John N. Seitz
John N. Seitz
Director
April 4, 2005
Sam K. Smith
Director
II-9
Table of Contents
INDEX TO EXHIBITS
4.1
Form of Stock Option Award Agreement pursuant to which
participants in the Input/Output, Inc. GX Technology Corporation
Employment Inducement Stock Option Program are to be granted
employment inducement stock options to purchase shares of Common
Stock of the Registrant under such program.
4.2
Stock Option Agreement pursuant to which TengBeng Koid is to be
granted stock options to purchase shares of Common Stock of the
Registrant, under the Input/Output, Inc. April 2005 Inducement
Equity Program.
4.3
Restricted Stock Agreement pursuant to which TengBeng Koid is to
be issued restricted Common Stock of the Registrant under the
Input/Output, Inc. April 2005 Inducement Equity Program.
5.1
Opinion of Fulbright & Jaworski L.L.P.
23.1
Consent of PricewaterhouseCoopers LLP.
23.2
Consent of Fulbright & Jaworski L.L.P. (included in the opinion
of Fulbright & Jaworski L.L.P. filed as Exhibit 5.1 hereto).
24.1
Power of Attorney (included on the signature page hereto).