INPUT OUTPUT INC
DEF 14A, 1997-08-29
MEASURING & CONTROLLING DEVICES, NEC
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<PAGE>
                            SCHEDULE 14A INFORMATION
 
                  Proxy Statement Pursuant to Section 14(a) of
            the Securities Exchange Act of 1934 (Amendment No.    )
 
    Filed by the Registrant /X/
    Filed by a party other than the Registrant / /
 
    Check the appropriate box:
    / /  Preliminary Proxy Statement
    / /  Confidential, for Use of the Commission Only (as permitted by Rule
         14a-6(e)(2))
    /X/  Definitive Proxy Statement
    / /  Definitive Additional Materials
    / /  Soliciting Material Pursuant to Section 240.14a-11(c) or Section 
         240.14a-12
 
                              INPUT/OUTPUT, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)
 
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
 
Payment of Filing Fee (Check the appropriate box):
 
/X/  No fee required

/ /  Fee computed on table below per Exchange Act Rules 14a-6(i)(1) 
     and 0-11

    (1) Title of each class of securities to which transaction applies:

        ------------------------------------------------------------------------
    (2) Aggregate number of securities to which transaction applies:

        ------------------------------------------------------------------------
    (3) Per unit price or other underlying value of transaction computed
        pursuant to Exchange Act Rule 0-11 (set forth the amount on which the
        filing fee is calculated and state how it was determined):

        ------------------------------------------------------------------------
    (4) Proposed maximum aggregate value of transaction:

        ------------------------------------------------------------------------
    (5) Total fee paid:

        ------------------------------------------------------------------------

/ / Fee paid previously with preliminary materials.

/ / Check box if any part of the fee is offset as provided by Exchange Act Rule
    0-11(a)(2) and identify the filing for which the offsetting fee was paid
    previously. Identify the previous filing by registration statement number,
    or the Form or Schedule and the date of its filing.

    (1) Amount Previously Paid:

        ------------------------------------------------------------------------
    (2) Form, Schedule or Registration Statement No.:

        ------------------------------------------------------------------------
    (3) Filing Party:

        ------------------------------------------------------------------------
    (4) Date Filed:

        ------------------------------------------------------------------------

<PAGE>


                               INPUT/OUTPUT, INC.
                            11104 WEST AIRPORT BLVD.
                             STAFFORD, TEXAS  77477
                                 (713) 933-3339

                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

                          TO BE HELD SEPTEMBER 29, 1997

To the Stockholders of Input/Output, Inc.:

    NOTICE IS HEREBY GIVEN that the 1997 Annual Meeting of Stockholders of  
Input/Output, Inc. (the "Company") will be held at the Stafford Civic Center, 
1415 Constitution Avenue, Stafford, Texas 77477, on Monday, September 29, 
1997 at 10:00 a.m., Stafford, Texas time, for the following purposes, as 
described in the accompanying Proxy Statement:

    1.    To elect three directors, each for a three-year term expiring
          in 2000 or until their successors are duly elected and qualified or
          until their earlier death, resignation or removal.
     
    2.    To consider and vote upon the adoption of the Input/Output,
          Inc. Employee Stock Purchase Plan.

    3.    To consider and ratify the appointment of KPMG Peat Marwick LLP
          as the Company's independent certified public accountants for the
          fiscal year ending May 31, 1998.

    4.    To transact any other business which properly may be brought
          before the Annual Meeting or any adjournment thereof. 

    Only holders of record of the Company's Common Stock at the close of 
business on August 12, 1997 are entitled to notice of and to vote at the 
Annual Meeting or any adjournment thereof.  A complete list of such 
stockholders will be open for the examination of any stockholder of record at 
the Company's principal executive offices at 11104 West Airport Blvd., 
Stafford, Texas 77477 for a period of ten (10) days prior to the Annual 
Meeting.  The list shall also be available for the examination of any 
stockholder of  record present at the Annual Meeting.  The Annual Meeting may 
be adjourned from time to time without notice other than by announcement at 
such meeting.

    WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING, PLEASE SIGN AND DATE THE 
ENCLOSED PROXY AND RETURN IT IN THE ENVELOPE PROVIDED.  


                                         By Order of the Board of Directors,


                                         /s/ ROBERT P. BRINDLEY
                                         ROBERT P. BRINDLEY
                                         Secretary

Stafford, Texas 
August 29, 1997 


<PAGE>

                              INPUT/OUTPUT, INC.
                           11104 WEST AIRPORT BLVD.
                            STAFFORD, TEXAS  77477
                                (713) 933-3339

                               PROXY STATEMENT
                                     FOR
                        ANNUAL MEETING OF STOCKHOLDERS
                        TO BE HELD SEPTEMBER 29, 1997

                  SOLICITATION AND REVOCABILITY OF PROXIES

     The Board of Directors of Input/Output, Inc., a Delaware corporation 
(the "Company"), is soliciting proxies to be voted at the Annual Meeting of 
Stockholders of the Company to be held at the Stafford Civic Center, 1415 
Constitution Avenue, Stafford, Texas 77477, on Monday, September 29, 1997 at 
10:00 a.m., Stafford, Texas time, and at any adjournment thereof.  This Proxy 
Statement and the enclosed proxy are first being mailed to stockholders on or 
about August 29, 1997 in connection with this solicitation.

     This proxy solicitation is intended to afford stockholders the 
opportunity to vote on the matters set forth in the accompanying Notice of 
Annual Meeting of Stockholders dated August 29, 1997.  The proxy permits 
stockholders to withhold voting for any or all nominees for election to the 
Company's Board of Directors (the "Board") and to abstain from voting for any 
proposal if the stockholder so chooses.

     All holders of record of shares of the Company's Common Stock
at the close of business on August 12, 1997 (the "Record Date"), are entitled to
notice of and to vote at the Annual Meeting.  On the Record Date, the Company
had outstanding 43,462,826 shares of common stock, par value $0.01 per share
(the "Common Stock").

     Each share of Common Stock is entitled to one vote.  The presence, in 
person or by proxy, of holders of a majority of the outstanding shares of 
Common Stock entitled to vote as of the Record Date is necessary to 
constitute a quorum at the Annual Meeting.  A plurality of the votes of the 
shares present in person or by proxy at the Annual Meeting, provided a quorum 
is constituted, is required for the election of directors.  All other actions 
proposed herein may be taken upon the affirmative vote of holders of a 
majority of the shares of Common Stock represented at the Annual Meeting, 
provided a quorum is present in person or by proxy.

     With regard to the election of directors, votes may be cast in favor or 
withheld; votes that are withheld will be excluded entirely from the vote and 
will have no effect.  Abstentions may be specified on all other proposals and 
will be counted as present for purposes of the item on which the abstention 
is noted.  Abstentions on the other specific proposals set forth herein will 
have the effect of negative votes because these proposals require the 
affirmative vote of holders of a majority of shares present in person or by 
proxy and entitled to vote.  Under the rules of the New York Stock Exchange, 
Inc. ("NYSE"), brokers who hold shares in street name for customers have the 
authority to vote on certain "discretionary" items when they have not 
received instructions from beneficial owners.  NYSE rules provide that 
brokers who have not received voting instructions from their clients have 
discretion to give a proxy and to vote on the election of directors and the 
other proposals set forth herein.  Under applicable Delaware law, a broker 
non-vote will have no effect on the outcome of the election of directors or 
the proposal to ratify the appointment of the auditors, nor will it count as 
a vote cast in determining the total affirmative votes cast on the proposal 
to adopt the Input/Output, Inc. Employee Stock Purchase Plan.

     Any stockholder has the unconditional right to revoke his proxy at any 
time before it is voted.  Any proxy given may be revoked either by a written 
notice duly signed and delivered to the Secretary of the 

<PAGE>

Company prior to the exercise of the proxy, by execution of a subsequent 
proxy and delivery of such subsequent proxy to the Secretary of the Company, 
or by voting in person at the Annual Meeting (although attending the Annual 
Meeting without executing a ballot or executing a subsequent proxy will not 
constitute revocation of a proxy). Where a stockholder's duly executed proxy 
specifies a choice with respect to a voting matter, the shares will be voted 
accordingly.  If no such specification is made, the shares will be voted (i) 
FOR the nominees for director identified below, (ii) FOR the adoption of the 
Input/Output, Inc. Employee Stock Purchase Plan and (iii) FOR the 
ratification of the appointment of KPMG Peat Marwick LLP as the Company's 
independent certified public accountants for the fiscal year ending May 31, 
1998.

                              ELECTION OF DIRECTORS

     The Company's Certificate of Incorporation divides the Board into three 
classes.  The term of office of one class of directors expires at this Annual 
Meeting of Stockholders.  A second class of directors will serve until the 
1998 Annual Meeting of Stockholders, and the third class of directors will 
serve until the 1999 Annual Meeting of Stockholders.

     Robert P. Brindley, Shelby H. Carter, Jr. and Theodore H. Elliott, Jr., 
each of whom is currently a director of the Company with a term expiring at 
the 1997 Annual Meeting, are nominees for director and will stand for 
election at this year's Annual Meeting for a three-year term of office 
expiring at the 2000 Annual Meeting of Stockholders or until their successors 
are duly elected and qualified or until their earlier death, resignation or 
removal.  For additional information regarding Messrs. Brindley, Carter and 
Elliott,  see "Management - Directors and Executive Officers of the Company." 
The persons named in the proxy will vote FOR such nominees, except where 
authority has been withheld as to a particular nominee or as to all nominees.

     Nominees for director receiving a plurality of the votes represented by 
the shares of Common Stock present in person or represented by proxy at the 
Annual Meeting and entitled to vote thereon will be elected as directors.  
Each nominee has consented to being named in this Proxy Statement and to 
serve his term if elected.  If any nominee should for any reason become 
unavailable for election, proxies may be voted with discretionary authority 
by the persons named therein for any substitute designated by the Board.

     THE BOARD RECOMMENDS THAT STOCKHOLDERS VOTE FOR EACH OF THESE NOMINEES 
FOR ELECTION TO THE BOARD.

                    PROPOSAL TO ADOPT THE INPUT/OUTPUT, INC.
                          EMPLOYEE STOCK PURCHASE PLAN

GENERAL

     In March 1997, the Board adopted the Input/Output, Inc. Employee Stock 
Purchase Plan (the "Purchase Plan") in order to advance the long-range 
interests of the Company by encouraging the acquisition and ownership of 
Common Stock by employees of the Company and its subsidiaries.  The Purchase 
Plan is intended to increase the employees' proprietary interest in the 
Company's long-term performance and success and to provide employees with a 
means of obtaining an equity ownership interest in the Company.  The Purchase 
Plan is intended to qualify as an "employee stock purchase plan" under 
Section 423 of the Internal Revenue Code of 1986, as amended (the "Code").  A 
copy of the Purchase Plan is attached hereto as Appendix I, and the following 
description is qualified in its entirety by reference to Appendix I.

                                     -2-
<PAGE>

DESCRIPTION OF THE PLAN

     The Purchase Plan, if approved by the stockholders, will allow all 
employees who are employed for more than 20 hours per week and who have been 
employed by the Company for at least six months prior to the first day of an 
"offering period" (as described below) to authorize payroll deductions at a 
rate of 1% to 15% of base compensation (including overtime) to be applied 
toward the purchase of Common Stock.  There are 1.5 million shares of Common 
Stock reserved for issuance under the Purchase Plan, subject to adjustments 
for stock dividends and similar events.  As of July 31, 1997, there were 
approximately 1,018 employees eligible to participate in the Purchase Plan.  
The Purchase Plan, which is administered by a Plan Committee appointed by the 
Compensation Committee of the Board, will terminate (i) at such time as is 
determined in the discretion of the Board or (ii) at such time as all shares 
reserved under the Purchase Plan have been purchased.

     Under the Purchase Plan, separate six-month offering periods commence on 
April 1 and October 1 of each year.  An employee must authorize a payroll 
deduction before the start of an offering period in order to participate in 
that offering.  On the last business day of the offering period, the employee 
will be deemed to have exercised the option to purchase as many shares as the 
employee's payroll deduction will allow, at the option price.  The option 
price is 85% of the lesser of (i) the fair market value of the stock on the 
first day of the offering period, or (ii) the fair market value of the stock 
on the last day of the offering period.  Fractional shares will not be issued 
under the Purchase Plan, and any funds remaining in employee plan accounts 
after such purchase shall be retained for the next offering period.  Fair 
market value shall be determined by reference to the closing share prices as 
reported by the composite transaction reporting system for securities listed 
on the NYSE.  The closing price of the Company's Common Stock as reported on 
the NYSE on July 31, 1997 was $21.625.

     Shares purchased will be held by the Plan Administrator for the benefit 
of Purchase Plan participants, and participants may direct the Plan 
Administrator to sell purchased shares from their plan accounts.  The initial 
Plan Administrator is Harris Trust and Savings Bank.  Participants may elect 
to receive stock certificates for purchased shares from their plan accounts.  

     An employee may withdraw from an offering at any time.  Upon withdrawal, 
the amount in the employee's account will be refunded, without interest.  
Employees who withdraw from an offering may not thereafter participate in 
that offering, and those employees will also be ineligible to participate in 
the next offering period.  However, if a withdrawing employee is otherwise 
eligible, that employee may participate in any other future offering periods 
under the Purchase Plan.

     If an employee is terminated for any reason (including death or 
disability), that employee's participation in the Purchase Plan will 
immediately terminate.  All cash remaining in such a former employee's 
account will be refunded, without interest.

     No employee shall be permitted to purchase any shares under the Purchase 
Plan if such employee, immediately after such purchase, owns shares 
possessing five percent or more of the total combined voting power or value 
of all classes of stock of the Company.  The fair market value of all shares 
purchased by an employee under the Purchase Plan during any calendar year may 
not exceed $25,000.

     Because the purchase of shares under the Purchase Plan is discretionary 
with all eligible employees, it would not be meaningful to include 
information as to the amount of shares which would have been distributable 
during fiscal 1997 to all employees, or to groups of employees, or to any 
particular employee of the Company had the Purchase Plan been in effect 
during the fiscal year.

                                     -3-
<PAGE>

     The Compensation Committee of the Board of Directors may at any time 
amend or terminate the Purchase Plan, provided that no employee's existing 
rights under any offering already commenced may be adversely affected 
thereby. No amendment may be made to the Purchase Plan without prior approval 
of the stockholders of the Company if such amendment would increase the 
number of shares reserved thereunder, materially modify the eligibility 
requirements, or materially increase the benefits that may accrue to 
participants.

     If the Company's stockholders have not approved the Purchase Plan prior 
to the last day of the first offering period (i.e., September 30, 1997), then 
no funds in a participant's plan account may be used to purchase shares until 
such stockholder approval has been obtained, and in that event, the purchase 
date for the first offering period shall be the fifth business day after the 
date of stockholder approval.  If the stockholders have not approved the 
Purchase Plan by January 17, 1998 (i.e., the date which is 12 months after 
the date of adoption of the Purchase Plan by the Board of Directors), the 
Purchase Plan shall terminate and all funds held in participants' plan 
accounts shall be returned to the participants in cash, plus interest at 5% 
per annum. 

FEDERAL INCOME TAX CONSEQUENCES RELATING TO THE PURCHASE PLAN

     The federal income tax consequences of an employee's participation under 
the Purchase Plan will vary.  The following discussion is only a summary of 
the general federal income tax guidelines applicable to the Purchase Plan.  
Employees should consult their own tax advisors since a taxpayer's particular 
situation may be such that some variation of the tax matters described below 
will apply.

     The Purchase Plan and the right of participants to make purchases 
thereunder are intended to qualify under the provisions of Section 421 and 
423 of the Code.  Under those provisions, no income will be taxable to a 
participant at the time of grant of the option or purchase of shares for 
federal income tax purposes.  However, a participant may become liable for 
tax upon dispositions of shares acquired under the Purchase Plan (or if he or 
she dies holding such shares), and the tax consequences will depend on how 
long a participant has held the shares prior to disposition.

     If the shares are disposed of at a point in time which is (a) at least 
two years after the date of the beginning of the offering period and (b) at 
least one year after the stock is purchased in accordance with the terms of 
the  Purchase Plan (or if the employee dies while holding the shares), the 
following tax consequences will apply:  The lesser of (a) the excess of fair 
market value of the shares at the time of such disposition over the purchase 
price of the shares (the "option price"), or (b) the excess of the fair 
market value of the shares at the time the option was granted over the option 
price (which option price will be computed as of the offering date) will be 
treated as ordinary income to the participant.  Any further gain upon 
disposition generally will be taxed at long-term capital gain rates.  If the 
shares are sold and the sales price is less than the option price, there is 
no ordinary income and the participant has a long-term capital loss equal to 
the difference.  If an employee holds the shares for this period, no 
deduction in respect of the disposition of such shares will be allowed to the 
Company.

     If the shares are sold or disposed of (including by way of gift) before 
the expiration of either the two year or the one year holding periods 
described above, the following tax consequences will apply:  The amount by 
which the fair market value of the shares on the date the option is exercised 
(which is the last business day of the offering period and which is hereafter 
referred to as the "termination date") exceeds the option price will be 
treated as ordinary income to the participant.  This excess will constitute 
ordinary income in the year of sale or other disposition even if no gain is 
realized on the sale or a gratuitous transfer of the shares is made.  The 
balance of any gain will be treated as capital gain and will qualify for 
long-term capital gain treatment if the shares have been held for more than 
one year following the exercise of the option.  Even if the shares 

                                     -4-
<PAGE>

are sold for less than their fair market value on the termination date, the 
same amount of ordinary income is attributed to a participant and a capital 
loss is allowed equal to the difference between the sales price and the value 
of such shares on such termination date.  The Company, in the event of an 
early disposition, will be allowed a deduction for federal income tax 
purposes equal to the ordinary income realized by the disposing employee.

VOTE REQUIRED

     The affirmative vote of the holders of a majority of the shares of 
Common Stock represented in person or by proxy at the Annual Meeting and 
entitled to vote thereon, provided a quorum is present, is required for the 
approval of the Purchase Plan.

     THE BOARD RECOMMENDS THAT STOCKHOLDERS VOTE FOR THE PROPOSAL TO APPROVE 
THE ADOPTION OF THE INPUT/OUTPUT, INC. EMPLOYEE STOCK PURCHASE PLAN.

                        PROPOSAL TO RATIFY APPOINTMENT OF
                    INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

     The Board has selected KPMG Peat Marwick LLP as independent certified 
public accountants to examine the consolidated financial statements of the 
Company for the fiscal year ending May 31, 1998.  Stockholders are being 
asked to ratify this appointment.  The Company has been informed that neither 
KPMG Peat Marwick LLP nor any of its partners have any direct financial 
interest or any material indirect financial interest in the Company nor have 
had any connection during the past three years with the Company in the 
capacity of promoter, underwriter, voting trustee, director, officer or 
employee.

     Representatives of KPMG Peat Marwick LLP are expected to be present at 
the Annual Meeting with the opportunity to make a statement if they so desire 
and to be available to respond to appropriate questions.

     The affirmative vote of the holders of a majority of the shares of 
Common Stock represented in person or by proxy at the Annual Meeting and 
entitled to vote thereon, provided a quorum is present, is required for 
approval of this proposal.

     THE BOARD RECOMMENDS THAT STOCKHOLDERS VOTE FOR THE RATIFICATION OF THE 
APPOINTMENT OF KPMG PEAT MARWICK LLP AS THE COMPANY'S INDEPENDENT CERTIFIED 
PUBLIC ACCOUNTANTS FOR THE FISCAL YEAR ENDING MAY 31, 1998.

                                     -5-
<PAGE>

                                  MANAGEMENT

DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY

     The following table sets forth the names, ages and titles of the 
directors and executive officers of the Company.
<TABLE>
            Name                       Age                  Title
            ----                       ---                  -----
<S>                                    <C>  <C>
 Charles E. Selecman . . . . . . . .   68   Chairman of the Board of Directors, 
                                             President and Chief Executive Officer
 Robert P. Brindley. . . . . . . . .   47   Director, Executive Vice President - Worldwide 
                                             Marketing Operations, Chief Financial Officer 
                                             and Secretary
 G. Thomas Grisham . . . . . . . . .   45   Senior Vice President - Manufacturing
 Robert A. Brook . . . . . . . . . .   42   Vice President - Research and Development
 Axel M. Sigmar. . . . . . . . . . .   36   Vice President - Advanced System Group
 Shelby H. Carter, Jr. . . . . . . .   66   Director
 Ernest E. Cook. . . . . . . . . . .   71   Director
 Glen H. Denison . . . . . . . . . .   73   Director
 Theodore H. Elliott, Jr.  . . . . .   61   Director
 G. Thomas Graves III. . . . . . . .   48   Director
</TABLE>

     Set forth below are descriptions of the backgrounds of the executive 
officers and directors of the Company and their principal occupations for the 
past five years.

     Charles E. Selecman has served as Chairman of the Board of Directors of 
the Company since December 1986.  On May 16, 1997, Mr. Selecman was elected 
President and Chief Executive Officer of the Company.  He previously served 
as President and Chief Executive Officer of the Company from 1989 until 1993. 
Mr. Selecman served from 1984 through 1986 as president of various oil field 
equipment and oil and gas exploration and production subsidiaries of Kidde, 
Inc., and also served as the group executive for the Kidde, Inc. energy 
group, which included the Company.  Mr. Selecman's term as a director of the 
Company expires at the 1999 Annual Meeting of Stockholders.

     Robert P. Brindley, a director of the Company since July 1994, was 
appointed Executive Vice President - Worldwide Marketing Operations in June 
1997.  He has served as Chief Financial Officer and Secretary of the Company 
since 1987.  He previously served as Senior Vice President from 1991 to June 
1997, Vice President - Finance from 1987 to 1991, and Vice President and 
Controller from 1982 to 1987.  Mr. Brindley, whose present term as a director 
of the Company expires at the 1997 Annual Meeting of Stockholders, is a 
nominee for re-election at the meeting.  See "Election of Directors."

                                     -6-
<PAGE>

     G. Thomas Grisham has served as Senior Vice President - Manufacturing of 
the Company since June 1997.  Prior to his appointment as Senior Vice 
President, he had served as Vice President - Manufacturing since 1992.  Mr. 
Grisham served as Manufacturing Manager for the Company from 1991 to 1992.  
Prior to that he held various positions of increasing responsibility in 
Marketing and Sales from 1980 until 1991.

     Robert A. Brook has served as Vice President - Research and Development 
since June 1997.  From 1993 until June 1997, Mr. Brook served as Vice 
President - Exploration.  Mr. Brook joined the Company in 1991.

     Axel M. Sigmar was appointed Vice President - Advanced System Group in 
June 1997.  Prior to that he had served, since 1992, as Vice President - 
Corporate Development of the Company.  Mr. Sigmar was a product line manager 
having worldwide responsibility for land seismic at Schlumberger Geco-Prakla, 
a seismic contractor, from 1988 to 1992.  Mr. Sigmar served in various 
international management and technical positions in Schlumberger Wireline and 
Testing operations from 1982 to 1988.

     Shelby H. Carter, Jr., a director of the Company since February 1987, is 
also a founder/director of Bay Networks, Inc., a software and local area 
networking company.  Since January 1986, Mr. Carter has also served as a 
professor at the University of Texas Graduate School of Business and College 
of Business Administration.  From December 1986 to September 1989, he served 
as an advisory partner at Austin Ventures, L.P., a venture capital firm.  In 
January 1985, Mr. Carter retired from his positions as General Sales Manager, 
Worldwide Operations and Corporate Vice President for Xerox Corporation, 
where he had been employed since January 1970; prior to that he was employed 
for 15 years by IBM Corporation.  He also serves on the Board of Directors of 
TechWorks, Inc. and Pervasive Software, Inc.  Mr. Carter, whose present term 
as a director of the Company expires at the 1997 Annual Meeting of 
Stockholders, is a nominee for re-election at the meeting.  See "Election of 
Directors."

     Ernest E. Cook, a director of the Company since February 1987, is an 
independent oil and gas consultant.  Mr. Cook is also a director of Triton 
Energy Corporation.  Mr. Cook's term as a director of the Company expires at 
the 1998 Annual Meeting of Stockholders.

     Glen H. Denison was a director of the Company from 1988 until resigning 
in July 1990.  Mr. Denison rejoined the Company's Board of Directors in 
September 1990 upon retiring as Group Vice President of Hanson Industries, 
Inc. and Chief Executive Officer of Axelson, Inc., an oilfield equipment 
manufacturer, which were positions he had held since 1984.  Mr. Denison 
retired as Chairman of Axelson, Inc. in 1993.  Mr. Denison's term as a 
director of the Company expires at the 1998 Annual Meeting of Stockholders.

     Theodore H. Elliott, Jr., a director of the Company since February 1987, 
has been Chairman of Prime Capital Management Co. Inc., a Stamford, 
Connecticut, venture capital company, during the past five years.  Mr. 
Elliott's present term as a director of the Company expires at the 1997 
Annual Meeting of Stockholders; he is a nominee for re-election at the 
meeting.  See "Election of Directors."

     G. Thomas Graves III, a director of the Company since February 1987, 
currently serves as President of Gralee Capital Corporation, an asset 
management company.  He is also President and Director of Wilco Properties, 
Inc., a privately held oil and gas exploration company.  Mr. Graves served as 
Senior Vice President of Triton Energy Corporation from 1987 to 1993 and also 
served as Chairman and Chief Executive of Triton Europe Plc, a London Stock 
Exchange listed company engaged in the oil and gas exploration industry, from 
October 1991 to September 1993.  Mr. Graves' term as a director of the 
Company expires at the 1999 Annual Meeting of Stockholders.

                                     -7-
<PAGE>

     No director is related to any other director or executive officer of the 
Company or its subsidiaries, and there are no arrangements or understandings 
between a director and any other person pursuant to which such person was 
elected as director.

     Corporate officers are appointed by the Board and serve at the 
discretion of the Board.

MEETINGS OF DIRECTORS AND COMMITTEES

     The Board held 12 meetings during fiscal 1997.  Each director attended 
at least 75% of the aggregate of the total meetings of the Board and any 
committee on which such director served.

     The Company has the following standing Committees:

     THE  AUDIT COMMITTEE, which currently consists of Messrs. Elliott 
(Chairman), Denison and Graves met four times during fiscal 1997.  Its 
principal functions are to confirm the existence of effective accounting and 
internal control systems and to oversee the entire audit function.

     THE COMPENSATION COMMITTEE, which currently consists of Messrs. Carter 
(Chairman), Cook and Denison, held six meetings during fiscal 1997.  Its 
principal functions are to study, advise and consult with the Company's 
management regarding the compensation of officers and directors and other key 
employees of the Company.

     THE NOMINATING COMMITTEE, which currently consists of Messrs. Selecman 
(Chairman), Carter and Cook, met once during fiscal 1997.  Its principal 
functions are to identify suitable candidates to fill vacancies on the Board 
which may occur from time to time.  The Nominating Committee will consider 
nominees recommended by holders of Common Stock.  Nominations should be sent 
to the Nominating Committee c/o the Company at the address set forth on the 
first page of this Proxy Statement, on or before May 4, 1998.

                     REMUNERATION OF DIRECTORS AND OFFICERS

EXECUTIVE COMPENSATION

     The following table sets forth information regarding annual and 
long-term compensation with respect to the fiscal years ended May 31, 1997, 
1996 and 1995 paid or accrued by the Company to or on behalf of those persons 
who were during the fiscal year ended May 31, 1997, (i) the Company's Chief 
Executive Officers and (ii) the other four most highly compensated executive 
officers of the Company (the Company's Chief Executive Officers and the other 
four most highly compensated officers are collectively referred to herein as 
the "Named Executive Officers.")


                                     -8-

<PAGE>

                           SUMMARY COMPENSATION TABLE
<TABLE>
<S>                                          <C>    <C>        <C>      <C>            <C>
                                                                                         ALL OTHER
                                                                         LONG-TERM     COMPENSATION
                                                ANNUAL COMPENSATION     COMPENSATION     (4) (5)
                                             -------------------------  ------------   ------------

                                                                         Securities   
                                                                         Underlying   
                                             Year    Salary      Bonus    Options     
                                             ----   --------   --------  ----------
Charles E. Selecman (1)                      1997   $      0   $      0  $      0         $     0
Chairman of the Board, President 
 and Chief Executive Officer

Gary D. Owens (1)                            1997   $350,000   $      0   150,000(2)      $67,404
 President and Chief Executive Officer       1996    300,000    306,526   200,000          67,218
                                             1995    250,000    256,173         0          67,823

Robert P. Brindley                           1997   $225,000   $      0    80,000         $40,262
 Executive Vice President, Chief             1996    195,000    179,742    80,000          44,268
 Financial Officer and Secretary             1995    175,000    153,071         0          43,550

Michael J. Sheen (3)                         1997   $225,000   $      0    80,000(3)      $51,372
 Senior Vice President and Chief             1996    195,000    179,742    80,000          55,378
 Technical Officer                           1995    175,000    153,071         0          53,879

G. Thomas Grisham                            1997   $195,000   $      0    80,000         $ 8,389
 Senior Vice President-Manufacturing         1996    160,000    147,480    80,000          13,131
                                             1995    130,000    113,710         0           8,264

Axel M. Sigmar                               1997   $160,000   $      0    60,000         $37,976
 Vice President - Advanced System Group      1996    150,000    138,263    50,000          43,899
                                             1995    130,000    113,710         0          41,172
</TABLE>
- -------------------
(1)  Mr. Owens resigned as the Company's President and Chief Executive Officer
     and as a member of the Board on May 16, 1997.  Mr. Selecman assumed the
     positions of President and Chief Executive Officer as of that date. 
     Mr. Selecman has entered into an employment agreement with the Company. 
     See "-- Employment Agreements" and "Compensation Committee Report on
     Executive Compensation."

(2)  On January 17, 1997, stock options to purchase up to 150,000 shares of
     Common Stock were granted to Mr. Owens by the Company pursuant to the
     Company's Amended and Restated 1990 Stock Option Plan; such stock options
     were canceled pursuant to the terms of the such plan contemporaneously with
     Mr. Owens' resignation from the Company on May 16, 1997.

(3)  Mr. Sheen resigned from his positions as Senior Vice President and Chief
     Technical Officer and as a member of the Board on June 3, 1997.  The stock
     options to purchase up to 80,000 shares of Common Stock granted to Mr.
     Sheen during fiscal 1997 were also canceled pursuant to the terms of the
     Amended and Restated 1990 Stock Option Plan contemporaneously with his
     resignation on such date.  

(4)  During fiscal 1997, the Company contributed to its Section 401(k) Plan as
     follows:  Mr. Selecman: $0; Mr. Owens: $15,169; Mr. Sheen: $9,789; Mr.
     Brindley: $9,789; Mr. Grisham:  $8,389;  and Mr. Sigmar: $7,075.

(5)  During fiscal 1997, the Company paid whole life insurance premiums as
     contributions with respect to the Company's Supplemental Executive
     Retirement Plan (SERP) as follows:  Mr. Owens: $52,235; Mr. Sheen: $41,583;
     Mr. Brindley:  $30,473; and Mr. Sigmar: $30,901.

                                     -9-
<PAGE>

     During fiscal 1997, the named individuals and certain officers included 
in the group received benefits in the form of certain perquisites. However, 
none of the individuals identified in the foregoing table received 
perquisites which exceeded in value the lesser of $50,000 or 10% of such 
officer's salary and bonus.

STOCK OPTIONS

     The options shown below were awarded during fiscal 1997 pursuant to the 
Company's Amended and Restated 1990 Stock Option Plan (the "1990 Plan"):


                        OPTION GRANTS IN LAST FISCAL YEAR

                                Individual Grants
<TABLE>
- ---------------------------------------------------------------------------------------------------------
                          Number          Percent of total 
                      of securities       options granted                                    Hypothetical
                        underlying        to employees in     Exercise or                     Grant Date 
       Name          options granted(1)      fiscal year     base price(1)  Expiration date    Value (2) 
- -------------------  ------------------   ----------------   -------------  ---------------  ------------
<S>                  <C>                  <C>                <C>            <C>              <C>
                            (#)                 (%)             ($/Sh)
Gary D. Owens            150,000(3)            21.43           $21.125         01/17/07      $1,495,500(3)
Robert P. Brindley        80,000               11.43            21.125         01/17/07         797,600 
Michael J. Sheen          80,000(3)            11.43            21.125         01/17/07         797,600(3)
G. Thomas Grisham         80,000               11.43            21.125         01/17/07         797,600
Axel M. Sigmar            60,000                8.5             21.125         01/17/07         598,200
Executive Group          450,000               64.29            21.125         01/17/07       4,496,500
Non-Employee Director
 Group                      N/A                 N/A 
Non-Executive Officer-
 Employee Group          250,000               35.71        16.875-21.125 
</TABLE>

(1)  These options will vest in four equal annual increments beginning on the
     first anniversary date of the grant. The 1990 Plan provides that in the
     event of a "change in control" of the Company (as defined in the 1990
     Plan), all stock options will become fully vested.  The options granted
     during fiscal 1997 to Messrs. Owens and Sheen were canceled
     contemporaneously with the resignations of these individuals in May and
     June of 1997.

(2)  The options are valued pursuant to the Black-Scholes valuation model, based
     upon the following assumptions: (a) expected stock price volatility
     calculated using monthly changes in stock price since May 1995, resulting
     in a stock price volatility of 44%; (b) a risk-free rate of return
     calculated using the interest rates of five-year U.S. Treasury notes as of
     the date of the grant, resulting in a risk-free rate of return assumption
     of 6.27% for options granted on January 17, 1997, and (c) a time of
     exercise assumption of five years (although the actual option term is ten
     years, that period was reduced for valuation purposes to reflect the
     non-transferability, vesting schedule and risk of forfeiture of the
     options).

(3)  On January 17, 1997, Messrs. Owens and Sheen were granted stock options to
     purchase up to 150,000 shares and 80,000 shares of Common Stock,
     respectively, pursuant to the 1990 Plan; such stock options were canceled
     pursuant to the terms of the such plan contemporaneously with their
     resignations from the Company on May 16, 1997 and June 3, 1997,
     respectively.

     The following table shows the number of shares covered by all 
exercisable and non-exercisable stock options held by the Named Executive 
Officers as of May 31, 1997.  Also reported are the year-end values for their 
unexercised "in-the-money" options, which represent the positive spread 
between the exercise price of any option and the year-end market price of the 
Common Stock.

                                      -10-
<PAGE>
                                       
                   AGGREGATED FISCAL YEAR-END OPTION VALUES

<TABLE>
                        Shares 
                      Acquired on                       Number of Unexercised       Value of Unexercised In-the-Money 
       Name            Exercise      Value Realized  Options at Fiscal year end (#)  Options at Fiscal year end ($)
- -------------------   -----------    --------------  ------------------------------ ---------------------------------
                                                      Exercisable/Unexercisable          Exercisable/Unexercisable
                                                      -------------------------          -------------------------
<S>                   <C>            <C>              <C>                            <C>
Charles E. Selecman         0                   $0         22,500/287,500                       $88,573/$88,593
Gary D. Owens(1)            0                    0         85,000/0                          $1,195,812/$0
Robert P. Brindley          0                    0         80,000/40,000                       $838,748/$0
Michael J. Sheen            0                    0         60,000/0                            $553,748/$0
G. Thomas Grisham      15,000             $409,647         35,000/140,000                      $207,656/$0
Axel M. Sigmar         60,500           $1,386,831         23,000/105,000                      $254,156/$46,500

(1) On January 17, 1997, Messrs. Owens and Sheen were granted stock options to purchase up to 150,000 shares and 
    80,000 shares of Common Stock, respectively, pursuant to the 1990 Plan; such stock options were canceled 
    pursuant to the terms of the such plan contemporaneously with their resignations from the Company on May 16,
    1997 and June 3, 1997, respectively.
</TABLE>

     On May 31, 1997, the last reported sales price of the Common Stock on 
the New York Stock Exchange composite tape was $17.75 per share.  The Named 
Executive Officers exercised Company stock options covering a total of 75,500 
shares during fiscal 1997.

EMPLOYMENT AGREEMENTS

     In 1991, the Company entered into employment agreements with Messrs. 
Owens, Brindley and Sheen, which were subject to automatic yearly extensions. 
In January 1997, the agreements were amended.  Each of these agreements 
provided that if the officer was terminated for a reason other than (a) his 
death, disability or retirement, (b) for cause or (c) his voluntary 
termination other than for good reason, such officer would be entitled to 
receive from the Company a lump sum severance payment equal to the sum of the 
following amounts: (i) the officer's full base salary through his date of 
termination at the rate then in effect, (ii) an amount equal to two times the 
average of the officer's annual base salary plus bonus for the preceding 
three fiscal years, (iii) certain relocation and indemnity payments, and (iv) 
in the event the officer is subject to the excise tax imposed by Section 4999 
of the Code as a result of a change in control, an amount equal to the 
product of (a) 25% multiplied by (b) the amount of any "excess parachute 
payment" received by the officer as described in the provisions of Section 
280G(b) of the Code.  In the event that an officer was deemed to receive a 
"parachute  payment" as the result of a change in control, such payment would 
be deemed to be an "excess parachute payment" if it equaled or exceeded 300 
percent of the officer's "base amount," generally the average annual 
compensation received by the officer over the most recent five tax years.  
The "excess parachute payment" is computed as that portion of the "parachute 
payment" which exceeds the "base amount."  In addition, unless the officer is 
terminated for cause, the Company must maintain in full force and effect for 
the continued benefit of the officer for a two-year period after the date of 
termination all benefit plans and programs or arrangements in which the 
officer was entitled to participate immediately prior to the date of 
termination.  In May and June 1997, Messrs. Owens and Sheen resigned from all 
positions with the Company, resulting in payments of $686,000 and $425,000 to 
Messrs. Owens and Sheen, respectively.  The employment agreement with Mr. 
Brindley remains in effect on the terms described above.

     In May 1997, the Company entered into an employment agreement with Mr. 
Selecman (the "Executive Agreement"), pursuant to which the Company agreed to 
employ Mr. Selecman as the Company's President and Chief Executive Officer 
through December 15, 1997.  The Executive Agreement is automatically 

                                     -11-
<PAGE>

renewable for additional six-month terms, unless either party provides prior 
written notice of termination.  If the Executive Agreement is terminated by 
the Company without cause (as defined), voluntarily by Mr. Selecman or due to 
the death or disability of Mr. Selecman, the Company will  continue to pay 
his base salary through the remaining term.  In addition, the agreement 
provides that Mr. Selecman will be entitled to a severance payment equal to 
the product of $360,000 multiplied by a fraction, the numerator being the 
number of days Mr. Selecman is not employed by the Company between May 16 and 
December 15, 1997 and the denominator being the total number of days between 
May 16 and December 15, 1997.  The agreement also provides that the Company 
will provide lifetime medical benefits to Mr. Selecman at the Company's cost. 
 Pursuant to the Executive Agreement, Mr. Selecman is also entitled to 
certain salary and bonus payments, as well as stock options.  See 
"Compensation Committee Report on Executive Compensation - Compensation of 
the Chief Executive Officer." 

SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

     The Input/Output, Inc. Supplemental Executive Retirement Plan (the 
"SERP") was established in 1992.  The SERP is designed to defer taxation of 
participants until their receipt of benefits.  The Board, in its sole 
discretion, is authorized to determine eligibility for participation in the 
SERP.  The Board has appointed a committee composed of directors and 
executive officers of the Company to administer the SERP.  The SERP provides 
to each participant, upon such participant's retirement from the Company at 
age 65, an annual deferred benefit equal to 60% of the participant's average 
annual compensation for those three consecutive calendar years during his 
employment that results in the highest annual compensation, reduced by 
certain social security benefits and certain actuarial equivalents of annual 
matching contributions made by the Company and credited to the participant 
under the Company's Section 401(k) Plan.  If a participant terminates 
employment prior to his 65th birthday due to death, total disability or early 
retirement that is approved by the Board, the participant will be 50% vested 
in his deferred benefit upon attaining age 55 and completing 15 years of 
service with the Company.  A participant's vested interest increases 5% 
thereafter for each additional year of service.  A participant is fully 
vested in his deferred benefit at age 65, or at age 55 if the participant has 
completed 25 years of service with the Company, or upon total disability of 
the participant or a change in control of the Company.  In addition, the SERP 
provides that the Company shall pay a participant an amount equal to any 
excise tax pursuant to Section 280G of the Code and any income or other tax 
liability arising in connection therewith, in the event that payment of a 
deferred benefit results in liability for such tax.

     "Change of control" for purposes of the SERP is defined to include the 
following: (i) mergers or consolidations in which the Company is not the 
surviving corporation (unless the proportionate ownership of the Company's 
stockholders in the surviving corporation is unchanged), (ii) any sale or 
other disposition of all or substantially all of the Company's assets, (iii) 
the approval by the Company's stockholders of any plan of liquidation or 
dissolution, (iv) the acquisition by a third party of beneficial ownership of 
50.1% of the Company's outstanding voting securities and (v) during any 
two-year period, persons who constituted at least a majority of the entire 
Board of Directors at the beginning of such period cease for any reason 
(other than death) to constitute a majority of the directors, unless the new 
director was approved by at least two-thirds of the directors then still in 
office who were directors at the beginning of such period.

COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION

     The Compensation Committee of the Board of Directors (the "Committee") 
includes only directors who are not employees of the Company.  The Committee 
establishes the salary levels of corporate officers and administers the 
Company's stock option and management incentive plans.  The present members 
of the Committee are Shelby H. Carter, Jr., Chairman, Ernest E. Cook and Glen 
H. Denison. The following report 

                                     -12-
<PAGE>

presents the Committee's summary of the Company's compensation programs and 
policies and describes the bases for compensation of the Company's executive 
officers and its chief executive officer:

COMPENSATION POLICY

     The goal of the Company's executive compensation policy is to support 
the overall objective of enhancing stockholder value, while at the same time 
attracting, motivating and retaining highly qualified and productive 
employees.  It is the policy of the Company that a significant portion of the 
compensation paid to the executive officers should be based on the Company's 
results of operations and the growth in value of its equity.  This policy 
aligns the interests of the Company's management and stockholders by placing 
increased emphasis on performance-based pay and reduced emphasis on fixed pay 
in overall total compensation.  To achieve its goals, the Company's executive 
compensation policies have been designed to provide competitive levels of 
compensation that integrate annual base compensation with bonuses based upon 
corporate performance and individual initiatives and performance.  Also, 
since 1990, the  Company has adopted and maintained stock option plans under 
which the benefits realized by executives are directly related to stock price 
performance.  

     Consistent with this objective, the Input/Output, Inc. Management 
Incentive Plan (the "MIP") provided for annual cash bonuses to the officers 
and other key employees of the Company, which were tied to actual profits 
performance compared to budgeted and prior year's pretax profits.  As a 
result of the Committee's review of the Company's total compensation program 
for its executives during 1996, the Committee recommended to the Board of 
Directors in July 1996 that the Company adopt the Input/Output, Inc. 1996 
Management Incentive Program (the "Incentive Plan") to replace the MIP.  The 
Incentive Plan was adopted by the Board of Directors and was approved by the 
stockholders at the 1996 Annual Meeting.  The Incentive Plan is similar to 
the MIP regarding its calculation of bonuses by reference to objective 
performance criteria. 

     In its assessment of compensation levels, the Committee takes into 
consideration performance relative to the individual responsibilities of the 
executive officers, as well as the financial performance of the Company 
relative to its goals and relative to the financial performance of other 
companies.  The Committee also considers the competitiveness of both the 
entire executive compensation package and each of its individual components.  
To assist it in its consideration, the Committee periodically engages the 
services of outside compensation consultants to evaluate the Company's 
executive compensation structure from time to time.  These consultants report 
directly to the Committee and advise the Committee regarding the 
competitiveness of the Company's executive compensation package as well as 
recent trends and developments in executive compensation for U.S. companies.  

     The Committee has considered the impact of Section 162(m) regarding the 
corporate limitations on deducting certain compensation expenses. It is the 
Committee's intent to adopt policies to obtain maximum tax deductibility of 
executive compensation, consistent with providing motivational and 
competitive compensation which is truly performance-based.  In furtherance of 
this goal, the Incentive Plan and the Company's option plans are intended to 
assure that the Company's executive compensation plans meet the requirements 
of Section 162(m) to achieve maximum deductibility of executive compensation 
expense.

     The Committee reviews the performance of the Company and each officer 
individually to determine salary and bonus adjustments and to determine stock 
option awards.  In determining appropriate salary levels, the Committee 
generally considers compensation levels for executive positions with similar 
duties and responsibilities in the external market, including those at 
comparable-sized electronics companies, as well as corporate and individual 
performance.

                                     -13-
<PAGE>

     Company executive compensation currently consists of two key elements: A 
long-term component (stock options) and an annual component (base salary and 
bonus).  Following is a description of the elements of the Company's current 
executive compensation program and how each relates to the objectives and 
policies outlined above.

     STOCK OPTIONS.  The Committee believes that long-term incentives should 
be provided to management to increase shareholder value, as measured by stock 
price.  The Committee believes that stock incentives are appropriate, not 
only for senior management, but also for employees of the Company and its 
subsidiaries.  All options provide for the purchase of shares at an exercise 
price equal to fair market value on the date of grant.  During fiscal 1997, 
Messrs. Owens, Brindley, Sheen, Grisham and Sigmar received stock option 
grants under the 1990 Plan.  See "Summary Compensation Table" and "Stock 
Options" above for information concerning these grants.

     INCENTIVE PLAN.  The Committee believes that key employees should have a 
significant portion of their total compensation based on the Company's 
relative financial performance to plan projections and the prior year's 
results. The participant's annual cash bonus under the Incentive Plan is 
determined based on specified performance achievements by the Company.

     Each participant is assigned to a group within the Incentive Plan which 
reflects his responsibility level within the Company.  The performance 
criteria for Incentive Plan groups emphasize the Company's objective for 
growth in profits before tax compared to budgeted pretax earnings for the 
plan year and the actual pretax results for the prior year. 

     Because the Company experienced a decline in pre-tax net earnings in 
fiscal 1997 compared to fiscal 1996, none of the performance criteria under 
the Incentive Plan were met in fiscal 1997.  Therefore, none of the Named 
Executive Officers received any cash bonuses under the Incentive Plan with 
respect to fiscal 1997.

     BASE SALARY.  The Committee approves the annual salaries for all 
officers of the Company.  The Committee reviews recommendations made by the 
Chief Executive Officer with regard to salary adjustments for officers other 
than himself, and then either approves or changes these recommended salary 
adjustments.  The Committee independently reviews performance of the Chief 
Executive Officer and determines an appropriate salary based on the criteria 
set forth above.  As noted above, base salaries for the Company's executive 
officers are also determined by reference to salary surveys from outside 
consultants and other sources.

COMPENSATION OF THE CHIEF EXECUTIVE OFFICER

     On May 16, 1997, Mr. Owens resigned as the Company's President and Chief 
Executive Officer and as a member of the Board.  Following Mr. Owens' 
resignation, Charles E. Selecman, the Company's Chairman of the Board, 
assumed the additional positions of President and Chief Executive Officer and 
entered into the Executive Agreement with the Company. 

     In fiscal 1997, Mr. Owens' annual base salary was $350,000. The factors 
which the Committee considered in determining Mr. Owens' compensation for 
fiscal 1997 were basically the same as those discussed above for the 
Company's executive officers.  As stated above, neither Mr. Owens nor any of 
the other Named Executive Officers received any cash bonuses with respect to 
fiscal 1997 pursuant to the Incentive Plan.  Mr. Owens' participation in 
option grants made by the Company during fiscal 1997 under the 1990 Plan was 
based upon overall compensation packages and option plans provided to senior 
executives in similar companies as well as Mr. Owens' level and scope of 
responsibilities to the Company during fiscal 

                                     -14-
<PAGE>

1997.  In January 1997, the Committee awarded options to purchase 150,000 
shares of Common Stock under the 1990 Plan to Mr. Owens.  As a result of Mr. 
Owens' resignation as President and Chief Executive Officer of the Company in 
May 1997, these options terminated upon his resignation.

     Pursuant to the terms of the Executive Agreement, Mr. Selecman is to 
receive a salary of $40,000 for each month of service as the Company's 
President and Chief Executive Officer.  In addition, Mr. Selecman received an 
initial fee of $150,000 (in part to defray his relocation costs) pursuant to 
the Executive Agreement.  Mr. Selecman's bonus under the Executive Agreement 
will be determined by reference to the average of the closing prices (the 
"Average Price") for the Common Stock on the NYSE for the ten consecutive 
trading days preceding December 15, 1997 (the day on which the initial term 
of the Executive Agreement expires).  If the Average Price is less than $20, 
Mr. Selecman's bonus will be $300,000; if the Average Price is at least $20 
but less than $25, Mr. Selecman's bonus will be $600,000; if the Average 
Price is at least $25 but less than $30, Mr. Selecman's bonus will be 
$1,200,000; if the Average Price is at least $30 but less than $35, Mr. 
Selecman's bonus will be $2,400,000; and if the Average Price is $35 or 
greater, Mr. Selecman's bonus will be $3,600,000.  In connection with the 
Executive Agreement, the Company granted Mr. Selecman on June 4, 1997 an 
option under the 1990 Plan to purchase 200,000 shares of Common Stock at an 
exercise price of $17.50 per share.  On June 4, 1997, the closing price per 
share of Company Common Stock as reported on NYSE composite transactions was 
$17.50.  The option becomes fully exercisable at the earlier to occur of (i) 
Mr. Selecman's termination of employment with the Company or (ii) June 4, 
1998. 

     In determining Mr. Selecman's compensation as the Company's President 
and Chief Executive Officer, the Committee considered the extraordinary 
nature of Mr. Selecman's services, his efforts in reorganizing Company 
management and his willingness to come out of retirement on an expedited 
basis to serve the Company as its Chief Executive Officer.  The Committee 
also considered Mr. Selecman's prior experience as President and Chief 
Executive Officer of the Company from 1989 to 1993.  The Committee has 
authorized an executive search for a new President and Chief Executive 
Officer.

SUMMARY

     The Committee believes that the Company's executive compensation 
policies and programs serve the interests of the stockholders and the Company 
effectively.  The various compensation programs are believed appropriately 
balanced to provide motivation for executives to contribute to the Company's 
overall success and enhance the value of the Company for the stockholders' 
benefit.  When performance goals are met or exceeded, resulting in increased 
value to stockholders, executives will be rewarded commensurately. When 
performance goals are not met, the executives' overall cash compensation is 
negatively impacted.  During fiscal 1997, none of the Named Executive 
Officers received any cash compensation derived from incentives directly 
linked to corporate performance.  The Committee will continue to monitor the 
effectiveness of the Company's total compensation program and continue to 
make proposals where applicable, to meet the current and future needs of the 
Company.

     This report has been provided by the Compensation Committee.
                                       
                       Shelby H. Carter, Jr., Chairman
                               Ernest E. Cook
                              Glen H. Denison

     The Compensation Committee Report on executive compensation shall not be 
deemed incorporated by reference by any general statement incorporating by 
reference this Proxy Statement into any filing under the Securities Act of 
1933 or the Securities Exchange Act of 1934, except to the extent that the 
Company 

                                     -15-
<PAGE>

specifically incorporates this information by reference, and shall not 
otherwise be deemed filed under such Acts.

STOCK PERFORMANCE GRAPH

     The following performance graph shall not be deemed incorporated by 
reference by any general statement incorporating by reference this Proxy 
Statement into any filing under the Securities Act of 1933 or the Securities 
Exchange Act of 1934, except to the extent that the Company specifically 
incorporates this information by reference, and shall not otherwise be deemed 
filed under such Acts.

     The following performance graph compares the yearly percentage change in 
the cumulative total stockholder return on the Company's Common Stock (as 
measured by dividing: (i) the difference between the Common Stock share price 
at the end and the beginning of the measurement period by (ii) the Common 
Stock share price at the beginning of the measurement period) with the 
cumulative total return assuming reinvestment of dividends of (1) the 
Standard and Poor's 500 Index and (2) the Standard and Poor's Electronics 
Index:

                        1993      1994      1995      1996      1997
                       ----------------------------------------------
INPUT/OUTPUT           102.86    294.29    388.57    922.86    405.71
S&P 500                111.61    116.36    139.86    179.63    232.25
S&P Electronics        110.46    106.15    177.91    225.86    307.1
Instrumentation




                                     -16-
<PAGE>

COMPENSATION OF DIRECTORS

     As compensation for serving on the Company's Board of Directors, each 
director who is not an employee of the Company receives $1,500 for each 
meeting attended and $1,500 for each committee meeting attended.  In 
addition, each non-employee director receives an annual stipend of $20,000.

     DIRECTORS RETIREMENT PLAN.  In 1992, the Company adopted the Directors 
Retirement Plan.  Under the Directors Retirement Plan, participation was 
limited to directors who served as outside directors for an aggregate of not 
less than five years or whose service on the Board as an outside director 
terminated due to death or disability or a change in control of the Company. 
Payment of benefits under the Directors Retirement Plan is payable in 
quarterly installments and commences at the beginning of the Company's fiscal 
quarter next following the later date at which a director (i) attains age 
sixty-five or (ii) retires from the Board.  Payments of benefits shall 
continue for a period equal to the lesser of (a) the number of years and 
portions thereof, rounded upwards to the nearest six months, during which 
such director served as an outside director or (b) ten years.  (During fiscal 
1996, the Board determined to accelerate the vesting in full of Mr. 
Selecman's years of service as an outside director.)  In the event of a 
"change of control" (as defined in the Plan), the director may elect to 
receive a lump sum payment representing the present value of the quarterly 
payments otherwise payable.  Total benefits payable to an outside director 
under the Directors Retirement Plan are equal to the greater of (i) 100% of 
the outside director's annual stipend effective for the fiscal year in which 
he retires or (ii) 100% of the outside director's annual stipend payable in 
the fiscal year prior to retirement.  

     In July 1996, the Board of Directors of the Company determined to 
discontinue the Directors Retirement Plan.  Under the terms adopted by the 
Board, all benefit accruals relating to years of service through the date of 
discontinuation were frozen; in addition, participation by any individual not 
currently an outside director was prohibited.  

     NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN.  Pursuant to the 
Input/Output, Inc. Non-Employee Director Stock Option Plan (the "Directors' 
Plan"), the Company is authorized to make automatic and discretionary grants 
of options to purchase shares of Common Stock to outside directors. The 
Directors' Plan provides that each individual serving as an outside director 
on the first business day of November 1996 will automatically receive a 
nonqualified stock option to purchase 20,000 shares of Common Stock and that 
each outside director who joins the Company's Board in the future will 
automatically receive a nonqualified stock option to purchase 20,000 shares 
of Common Stock on the date on which such person is first elected or begins 
to serve as an outside director. This first grant of a stock option for 
20,000 shares is referred to as the "First Grant."  Additionally, outside 
directors will receive a stock option to purchase 10,000 shares of Common 
Stock (the "Second Grant") on the first business day of the November 
immediately succeeding the First Grant and a stock option to purchase 10,000 
shares of Common Stock (the "Third Grant") on the first business day of the 
November immediately succeeding the Second Grant.  The First Grant stock 
options shall vest in 33.33% installments on the first, second, and third 
anniversary dates of the First Grant.  The Second Grant stock options shall 
vest in 50% installments on the first and second anniversary dates of the 
Second Grant.  The Third Grant stock options shall be fully exercisable on 
and following the first anniversary date of the Third Grant.  In addition, 
the Directors' Plan provides for discretionary grants of stock options to 
outside directors as determined from time to time by the Board. On June 30, 
1997, the five outside Board members (Messrs. Carter, Cook, Denison, Elliott 
and Graves) were each granted options to purchase 12,000 shares of Common 
Stock, vesting in one-third increments over a three-year period following the 
date of grant.  The exercisability of options under the Directors' Plan 
accelerates upon a change of control (as described in the plan) and upon the 
option holder's death while serving as a director or upon termination as a 
director as the result of retirement or disability.  As of July 31, 1997, the 
Company had granted options covering a total of 830,000 shares of Common 
Stock under the Directors' Plan.

                                     -17-

<PAGE>


                 VOTING AND STOCK OWNERSHIP OF MANAGEMENT
                        AND PRINCIPAL STOCKHOLDERS

     At the Record Date, there were outstanding 43,462,826 shares of Common 
Stock which were held of record by 306 stockholders, and the Company believes 
that there were approximately 11,050 beneficial owners of the Common Stock on 
such date.  Each share of Common Stock is entitled to one vote on each matter 
to come before the Annual Meeting.  The holders of the Common Stock have no 
appraisal or similar rights with respect to any of the matters to be voted on 
at the Annual Meeting.

     The following table sets forth certain information with regard to the 
beneficial ownership as of July 31, 1997 of Common Stock by (i) all persons 
known by the Company to be the beneficial owners of more than five percent of 
the outstanding Common Stock, (ii) each director of the Company, (iii) each 
Named Executive Officer of the Company and (iv) all executive officers and 
directors as a group (ten persons).

<TABLE>
                                                                      COMMON STOCK
                                                         --------------------------------------
          Name of Beneficial Owner(1)                    Number of Shares(1)   Percent of Class
          ---------------------------                    -------------------   ----------------
<S>                                                        <C>                 <C>
J. P. Morgan & Co., Inc.
  60 Wall Street
  New York, NY 10260                                          4,416,700              10.2%

Wellington Management
  One Post Office Square 
  Boston, MA 02709-2137                                       3,515,680               8.0%

Charles E. Selecman (2)                                          52,500                 *

Robert P. Brindley (3)                                          146,000                 *

G. Thomas Grisham (4)                                            55,000                 *

Robert A. Brook (5)                                              51,200                 *

Axel M. Sigmar (6)                                               23,000                 *

Shelby H. Carter, Jr. (7)                                        25,000                 *

Ernest E. Cook (8)                                               25,000                 *

Glen H. Denison (7)                                              25,000                 *

Theodore H. Elliott, Jr. (8)                                     33,500                 *

G. Thomas Graves III                                             23,800                 *

All officers and directors as a group (10 persons) (9)          470,000               1.1%

- ---------------
 *Less than 1%.

(1)  Except as otherwise indicated, the persons named in the table possess sole voting and 
     investment power with respect to all shares of Common Stock shown as beneficially owned 
     by them.  The table also includes shares of Common Stock held by wives and minor children 
     of such persons and corporations and partnerships in which such persons hold a controlling
     interest,  but excludes any controlling interest which may be deemed solely to exist by 
     virtue of such person being a director of a corporation.

(2)  Includes 22,500 shares which are subject to a currently exercisable option granted under 
     the Company's 1991 Directors Stock Option Plan.

(3)  Includes 80,000  shares which are subject to a currently exercisable option granted under 
     the Amended and Restated 1990 Stock Option Plan and 18,000 shares of restricted stock. 

(4)  Includes 35,000 shares which are subject to a currently exercisable option granted under 
     the Amended and Restated 1990 Stock Option Plan and 10,000 shares of restricted stock.

(5)  Represents 51,200 shares which are subject to a currently exercisable option granted under
     the Amended and Restated 1990 Stock Option Plan.


                                     -18-

<PAGE>

(6)  Represents 23,000 shares which are subject to a currently exercisable option granted under
     the Amended and Restated 1990 Stock Option Plan.

(7)  Represents 25,000  shares which are subject to a currently exercisable option granted 
     under the 1991 Directors Stock Option Plan.

(8)  Includes 22,500 shares which are subject to a currently exercisable option granted under 
     the 1991 Directors Stock Option Plan.

(9)  Includes an aggregate of 189,200 shares which are subject to currently exercisable 
     options granted under the Amended and Restated 1990 Stock Option Plan and 102,500 shares 
     which are subject to currently exercisable options granted under the 1991 Directors Stock 
     Option Plan.
</TABLE>

- --------------------------------------------------------------------------------

     SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE.  Section 16(a) 
of the Securities  Exchange Act of 1934 requires the Company's directors, 
executive officers and persons who own more than 10% of the Company's Common 
Stock, to file with the Securities and Exchange Commission ("SEC") initial 
reports of ownership and reports of changes of ownership of Common Stock and 
other equity securities of the Company.  Such persons are required by SEC 
regulations to furnish the Company with copies of all Section 16(a) reports 
they file.  Based solely upon its review of Forms 3, 4 and 5 and amendments 
thereto provided to the Company, during the fiscal year ended May 31, 1997, 
the Company's directors and executive officers and the persons who own more 
than 10% of the Company's Common Stock had complied with all Section 16(a) 
filing requirements, except that Mr. Graves inadvertently reported one 
transaction one month late.  

                STOCKHOLDER PROPOSALS AT 1998 ANNUAL MEETING

     In order for stockholder proposals to receive consideration for 
inclusion in the Company's Proxy Statement for its 1998 Annual Meeting of 
Stockholders, such proposals must be received at the Company's offices at 
11104 West Airport Blvd., Stafford, Texas 77477, Attention:  Secretary, on or 
before May 4, 1998.  All stockholder proposals must comply with Rule 14a-8 
promulgated by the Securities and Exchange Commission  pursuant to the 
Securities Exchange Act of 1934, as amended.

                                OTHER MATTERS

     The Company will bear all costs of this proxy solicitation.  In addition 
to soliciting proxies by mail, directors, executive officers and employees of 
the Company, without receiving additional compensation, may solicit proxies 
by telephone, by telegram or in person.  Arrangements will also be made with 
brokerage firms and other custodians, nominees and fiduciaries to forward 
solicitation materials to the beneficial owners of shares of the Common 
Stock, and the Company will reimburse such brokerage firms and other 
custodians, nominees and fiduciaries for reasonable out-of-pocket expenses 
incurred by them in connection with forwarding such materials.  In addition, 
the Company has retained Kissel-Blake Inc., a proxy solicitation firm, for 
assistance in connection with the Annual Meeting at a cost of approximately 
$4,000 plus reimbursement of reasonable out-of-pocket expenses.

     The Board does not know of any business to be presented for 
consideration at the Annual Meeting other than that stated in the 
accompanying Notice.  It is intended, however, that the persons authorized 
under the proxies may, in the absence of instructions to the contrary, vote 
or act in accordance with their judgment with respect to any other proposal 
properly presented for action at such meeting.

     The Annual Report of Stockholders for the fiscal year ended May 31, 
1997, which includes financial statements, is enclosed herewith.  The Annual 
Report does not form a part of this Proxy Statement or the materials for the 
solicitation of proxies to be voted at the Annual Meeting.


                                     -19-

<PAGE>

     A COPY OF THE COMPANY'S ANNUAL REPORT ON FORM 10-K, INCLUDING FINANCIAL 
STATEMENTS BUT NOT INCLUDING EXHIBITS, WILL BE FURNISHED AT NO CHARGE TO EACH 
PERSON TO WHOM A PROXY STATEMENT IS DELIVERED UPON RECEIPT OF A WRITTEN 
REQUEST OF SUCH PERSON ADDRESSED TO INPUT/OUTPUT, INC., ATTN: INVESTOR 
RELATIONS, 11104 WEST AIRPORT BLVD., STAFFORD, TEXAS 77477, TELEPHONE (713) 
933-3339.  THE COMPANY WILL ALSO FURNISH SUCH ANNUAL REPORT ON FORM 10-K TO 
ANY "BENEFICIAL OWNER" OF SUCH SECURITIES AT NO CHARGE UPON RECEIPT OF A 
WRITTEN REQUEST, CONTAINING A GOOD FAITH REPRESENTATION THAT, AT THE RECORD 
DATE, SUCH PERSON WAS A BENEFICIAL OWNER OF SECURITIES OF THE COMPANY 
ENTITLED TO VOTE AT THE ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON 
SEPTEMBER 29, 1997.  COPIES OF ANY EXHIBIT TO THE FORM 10-K WILL BE FURNISHED 
UPON THE PAYMENT OF A REASONABLE FEE.

     Information contained in the Proxy Statement relating to the security 
holdings of and related information concerning directors and officers of the 
Company is based upon information received from the individual directors and 
officers.

     PLEASE MARK, SIGN, DATE AND RETURN THE PROXY CARD AT YOUR EARLIEST 
CONVENIENCE IN THE ENCLOSED RETURN ENVELOPE.  NO POSTAGE IS REQUIRED IF 
MAILED IN THE UNITED STATES.  A PROMPT RETURN OF YOUR PROXY CARD WILL BE 
APPRECIATED AS IT WILL SAVE THE EXPENSE OF FURTHER MAILINGS.

                                         By Order of the Board of Directors,


                                         /s/ Robert P. Brindley
                                         Robert P. Brindley
                                         Secretary


Stafford, Texas 
August 29, 1997



                                     -20-

<PAGE>

                                  APPENDIX I

                              INPUT/OUTPUT, INC.
                         EMPLOYEE STOCK PURCHASE PLAN

     This Plan is intended to advance the long-range interests of 
Input/Output, Inc., a Delaware corporation (the "Company"), by encouraging 
the acquisition and ownership of capital stock of the Company ("Common 
Stock"), upon the terms herein set forth, by employees of the Company and 
certain of its subsidiaries, in order that their proprietary interest in the 
Company's long-term performance and success, and their continuance as 
employees of the Company, may be enhanced.  The Plan is also intended to 
provide employees with an opportunity to acquire a proprietary interest in 
the Company through the purchase of shares of the Common Stock of the 
Company.  This Plan shall be known as the "Input/Output, Inc. Employee Stock 
Purchase Plan."  The Plan is intended to qualify as an "employee stock 
purchase plan" under Section 423 of the Internal Revenue Code of 1986, as 
amended (the "Code").  The provisions of the Plan shall be construed in a 
manner consistent with requirements of Section 423 of the Code.

     1.  SHARES OFFERED.  The total number of shares of Common Stock ($.01 
par value) available for purchase by Participants under all Offerings 
(defined in Section 3 below) is 1,500,000 SHARES, which are either authorized 
but unissued Common Stock or Common Stock held by the Company in its 
treasury. If any Offering shall expire without all shares available under 
such Offering having been purchased, such unpurchased shares shall be added 
to the shares otherwise available for future Offerings.

     2.  ADMINISTRATION.  The Plan shall be administered by a committee (the 
"Plan Committee") appointed by the compensation committee of the Board of 
Directors (the "Compensation Committee"), which Plan Committee shall consist 
of not less than three members.  Subject to the express provisions of the 
Plan, the Plan Committee shall have authority, in its discretion, to 
interpret and construe any and all provisions of the Plan, to adopt rules and 
regulations for administering the Plan, and to make all other determinations 
necessary or advisable for administering the Plan.  The Plan Committee's 
determination on the foregoing matters shall be conclusive.  The Plan 
Committee shall have the power to appoint and remove an independent third 
party (which may, but need not, be a bank or trust company) to act as 
administrator of the Plan and custodian of all stock certificates issued 
under the Plan, and to provide such other services as the Plan Committee may 
determine (the "Administrator"), and the Plan Committee is authorized to 
enter into an agreement with the Administrator concerning its duties under 
the Plan.

     The Compensation Committee may from time to time appoint members of the 
Plan Committee in substitution for or in addition to members previously 
appointed, and may fill vacancies, however caused, in the Plan Committee.  
The Plan Committee may select one of its members as its Chairman and shall 
hold its meetings at such times and places as it shall deem advisable, and 
may hold telephonic meetings.  A majority of its members shall constitute a 
quorum.  All determinations of the Plan Committee shall be made by a  
majority of its members.  The Plan Committee may correct any defect or 
omission, or reconcile any inconsistency in the Plan, in the manner and to 
the extent it shall deem desirable.  Any decision or determination reduced to 
writing and signed by a majority of the members of the Plan Committee shall 
be as fully effective as if it had been made by a majority vote at a meeting 
duly called and held.  The Plan Committee may appoint a secretary and shall 
make such rules and regulations for the conduct of its business as it shall 
deem advisable.

     3.  OFFERINGS.  The Plan Committee shall make an offering to Eligible 
Employees (defined in Section 4 below) to purchase Common Stock under the 
Plan (each an "Offering") during the six-month periods from April 1 through 
September 30 and from October 1 through March 31, until this Plan terminates; 
each such six-month offering period during which any such Offering is open is 
referred to herein as an "Offering Period."  The April 1 or October 1 which 
is the first day of an Offering Period is the "Offering Date" for such 
Offering Period.  For each Offering Period, payroll deductions of 
Participants for all payroll periods which end during the Offering Period 
(including a payroll period which ends on the last day of an Offering Period) 
shall be 



<PAGE>


considered Payroll Deductions during such Offering Period and shall be used 
to purchase Common Stock at the end of the Offering Period in accordance with 
Section 7 below. Unless otherwise specified by the Plan Committee, the number 
of shares of Common Stock that may be purchased under an Offering shall be 
the balance of the 1,500,000 shares authorized in Section 1 above which have 
not been previously purchased under the terms of this Plan. 

     4.  ELIGIBILITY.  The Compensation Committee shall designate the 
subsidiaries of the Company whose employees are eligible to participate in 
the Plan ("Participating Subsidiaries").

     An "Eligible Employee" is a person who (i) is actively employed by
the Company or one of the Participating Subsidiaries, (ii) is actively employed
on the first day of the calendar month prior to an Offering Period, and (iii) is
not excluded pursuant to the following sentence. The following persons shall not
be Eligible Employees:  (1) employees whose customary employment with the
Company and all Participating Subsidiaries is twenty (20) hours or less per
week, (2) employees who have not been employed by the Company or a Participating
Subsidiary for at least six (6) consecutive months, and (3) an employee who owns
capital stock of the Company (including all capital stock which may be purchased
under outstanding Offerings under the Plan or outstanding options under any
stock plan of the Company) possessing 5% or more of the total combined voting
power or value of all classes of capital stock of the Company or of its
subsidiary corporations (for the foregoing purposes, the rules of Section 425(d)
of the Code shall apply in determining stock ownership), as provided in Code
Section 423(b)(3). All Eligible Employees may participate in the Plan.   A
person shall be considered actively employed when the person is presently
performing his/her regular duties with the Company or a Participating
Subsidiary.  A person's period of employment with a company acquired by the
Company or by one of its subsidiaries shall be included in determining an
employee's length of employment for the purpose of this paragraph, provided that
such acquired company is a Participating Subsidiary on the Offering Date.  A
person who is a director but not an employee shall not be eligible under the
Plan.

     5.  OFFERING RIGHTS.  With respect to each Offering, each Eligible
Employee may elect to participate by having a portion of his Compensation
(defined in Section 6 below) withheld and applied to the purchase of shares of
Common Stock at the end of the Offering Period.  The amount withheld from each
paycheck issued to the Eligible Employee during the Offering Period is the
Participant's "Payroll Deduction" (in accordance with Section 6 below), and the
Plan Committee shall apply such Payroll Deductions during an Offering Period to
the purchase of the Company's Common Stock at the end of the Offering Period in
accordance with Section 7 below.  In no event may the number of shares of Common
Stock which may be purchased by all Participants for an Offering exceed the
number of shares available during the Offering Period (as determined in
accordance with Section 3 above). 

     6.  PARTICIPATION; PAYROLL DEDUCTIONS.  An Eligible Employee who 
completes and delivers an authorization for Payroll Deduction on the form 
provided by the Plan Committee ("Payroll Deduction Authorization Form") shall 
become a participant in the Plan ("Participant").  A Participant may deliver 
a Payroll Deduction Authorization Form to the Chief Financial Officer of the 
Company prior to the Offering Date of an Offering Period, and in accordance 
with the rules developed by the Plan Committee.  On his Payroll Deduction 
Authorization Form, the Participant shall elect to have deductions made on 
each payday which may be any whole percentage from 1% up to and including 15% 
of the Participant's Compensation in effect at the beginning of the Offering 
Period. "Compensation" shall mean W-2 compensation, including overtime but 
excluding commissions, bonuses and other special payments.  A Participant who 
elects to participate for an Offering Period through Payroll Deduction shall 
be deemed to have elected to participate in the Plan on the same basis for 
each successive Offering Period until such Participant changes his Payroll 
Deduction in accordance with Section 8 below or withdraws (or is deemed to 
withdraw) from an Offering pursuant to Section 12 below.  A Participant shall 
not be required to file additional Payroll Deduction Authorization Forms for 
successive Offering Periods in order to continue participation in the Plan.


                                      -2-

<PAGE>

     7.  PARTICIPANTS' PLAN ACCOUNTS.  The Plan Committee will
maintain, or cause to have maintained, a Plan Account in the name of each
Participant.  On each payday, a Participant's Payroll Deduction shall be
withheld and credited to such Participant's Plan Account.  As of the last day of
the Offering Period or such other date as designated by the Plan Committee if
required for proper administration of the Plan ("Purchase Date"), the amount
then in such Participant's Plan Account shall be applied to the purchase of
shares in accordance with Section 10 below; provided, however, that the first
Purchase Date after the adoption of the Plan may be delayed pursuant to Section
27 below.  The purchase of shares shall be made solely from amounts credited to
the Participants' Plan Accounts.

     8.  PAYROLL DEDUCTION CHANGES.  Except in the case of a withdrawal
under Section 12 below, a Participant may not change his Payroll Deduction
during an Offering Period.  A Participant may, however, decrease or increase his
Payroll Deduction for a subsequent Offering Period prior to the commencement of
the next Offering Period, by filing a new Payroll Deduction Authorization Form
with the Chief Financial Officer of the Company during the time specified by the
Plan Committee.

     9.  NO INTEREST.  The Plan Committee shall NOT credit a Participant's 
Plan Account with interest on any Payroll Deduction, except as provided in 
Section 27 below.

    10.  PURCHASE PRICE AND PURCHASE OF SHARES.  Subject to Section 28 below, 
the purchase price for a share of Common Stock under any Offering will be the 
lesser of:

          (a)    85% of the closing sale price for shares of Common Stock as 
     reported by the composite transaction reporting system for securities 
     listed on the New York Stock Exchange on the Offering Date for such 
     Offering or on the most recently preceding date on which there was such 
     a sale (the "Initial Offering Price"); or

          (b)    85% of the closing sale price for shares of Common Stock 
     as reported by the composite transaction reporting system for 
     securities listed on the New York Stock Exchange on the last day of the 
     Offering Period or on the most recently preceding date on which there 
     was such a sale (the "Alternate Offering Price").

     As of the Purchase Date, the Alternate Offering Price shall be 
ascertained.  The Plan Committee will then apply all funds credited to the 
Participants' Plan Accounts to purchase shares of Common Stock available 
under the Offering.  Unless a Participant has withdrawn prior to the Purchase 
Date pursuant to Section 12, and subject to the provisions of Sections 25 and 
28, a Participant shall be deemed to have elected to purchase the maximum 
number of whole shares of Common Stock which may be purchased with the amount 
credited to his Plan Account as of the Purchase Date at the lower of the 
Initial Offering Price or the Alternate Offering Price. Fractional shares 
will not be issued under the Plan and any funds in a Participant's Plan 
Account which would have been used to purchase fractional shares shall be 
retained in such Plan Account for the next Offering Period.

     11.    TERMINATION OF EMPLOYMENT; TERMINATION OF ELIGIBILITY.  In the 
event of a Participant's termination of employment for any reason (including 
death or disability), the Participant's participation in the Plan shall 
immediately terminate without notice to the Participant, and all Payroll 
Deductions credited to such Participant's Plan Account shall be returned to 
such Participant in cash, without interest.  

     An Eligible Employee of a company included in the Plan which ceases to 
be a Participating Subsidiary shall be deemed to have terminated employment 
for purposes of this Section as of the date such company ceases to be a 
Participating Subsidiary unless, as of such date, the Participant shall 
become an Eligible Employee of the Company or of any Participating Subsidiary 
then included in the Plan.


                                      -3-

<PAGE>

     12.    WITHDRAWAL FROM OFFERING. Each Participant shall have the right, 
at any time prior to the Purchase Date, to withdraw from an Offering by 
providing fifteen (15) days' prior written notice to the Chief Financial 
Officer of the Company revoking his Payroll Deduction.  A Participant who 
elects to cease participation in the Plan by revoking his Payroll Deduction 
may not resume participation in the Plan until after the expiration of one 
full Offering Period following the Offering Period in which he withdraws and 
ceases participation. As promptly as practicable after the receipt of a 
revocation notice, all Payroll Deductions credited to such Participant's Plan 
Account shall be returned to such Participant in cash, without interest.

     13.    STOCK CERTIFICATES.  As promptly as practicable after the 
Purchase Date of each Offering, the Plan Committee will deliver to the 
Administrator all shares of Common Stock purchased with the funds credited to 
the Plan Accounts.  The Administrator will hold the shares of Common Stock of 
all Participants in its name or in the name of its nominee evidenced by as 
many or as few certificates as the Administrator determines.  No certificate 
representing shares of Common Stock purchased for a Participant's Plan 
Account will be issued to the Participant unless he or she makes a request in 
writing or until his or her Plan Account is terminated, or such Participant 
withdraws from an Offering. So long as the stock credited to a Participant's 
Plan Account is held by the Administrator, all rights accruing to an owner of 
record of such stock, including, without limitation, voting rights and rights 
of disposal, shall belong to the Participant for whose account such stock is 
held. 

     A Participant may elect, at any time and from time to time, to receive a 
stock certificate for shares credited to his Plan Account after the purchase 
price for such shares has been paid in full. In such event, certificates for 
shares of Common Stock shall be issued only in the name of the Participant 
unless the Participant or the Participant's designee (in the event the 
Participant has died) elects otherwise by written notice to the Plan 
Committee and the Plan Committee gives prior written consent to such 
election. 

     If a Participant withdraws from an Offering, terminates employment for 
any reason, or elects to terminate participation in the Plan, the 
Administrator will transfer to the Participant a stock certificate for whole 
shares credited to his Plan Account (and for which the purchase price has 
been paid in full), unless the Participant elects to sell all or part of the 
Participant's shares in accordance with Section 14 below.

     14.    SALE OF SHARES OF COMMON STOCK.  A Participant may request that 
the Administrator sell all or any part of the shares of Common Stock credited 
to such Participant's Plan Account.  Upon receipt of a written request from a 
Participant, the Administrator, as the Participant's agent, will sell the 
number of shares of Common Stock specified in the Participant's request 
within five business days of receipt by the Administrator of instructions to 
sell the shares of Common Stock, and will deliver to the Participant the 
proceeds of the sale, less a handling charge, brokerage commissions, and 
other costs of sale. Whole and fractional shares may be aggregated and sold 
with those of other Participants, in which case the proceeds for each 
Participant will be based on the average sales price of all shares aggregated 
and sold.  Any sale may, but need not, be made by purchase for other Plan 
Accounts, subject to and in accordance with the terms of the Plan, in which 
case the price will be the closing sale price of Common Stock as reported by 
the principal securities exchange or the inter-dealer quotation system on 
which the stock is traded or quoted on the date of receipt by the 
Administrator of the notice of the Participant's desire to sell shares of 
Common Stock or, if the stock is not traded on the date of receipt, the mean 
on the next prior date that it was so traded.  No sales of any fractional 
shares shall be permitted.

     15.    VOTING OF SHARES OF COMMON STOCK. The Administrator will vote a 
Participant's shares of Common Stock as instructed by the Participant on a 
form to be furnished by and returned to the Administrator at least ten days 
(or such shorter period as the law may require) before the meeting at which 
such shares of Common Stock are to be voted.  The Administrator will not vote 
shares of Common Stock for which no instructions are received.


                                      -4-

<PAGE>

     16.    TENDER OR EXCHANGE OFFER.  If a tender offer or exchange offer is 
commenced for shares of Common Stock, the Administrator, upon receipt of 
information with respect thereto as the holder of record of the shares of 
Common Stock, will either (i) forward, or arrange for the forwarding of, 
information provided by the offeror to holders of record of Common Stock to 
each Participant or (ii) provide to the offeror the name and mailing address 
of each Participant as reflected on the records of the Administrator with 
instructions to mail such material to each Participant.  The Administrator 
will tender all or part of a Participant's shares of Common Stock in response 
to written instructions from the Participant in such form as the 
Administrator may reasonably require and only if such instructions are 
received by the Administrator at least five days (or such shorter period as 
may be required by law) prior to the termination of the offer.  Unless the 
Administrator has received instructions in accordance with the previous 
sentence, it will not tender a Participant's shares of Common Stock.  Except 
to the extent disclosure is required to tender shares of Common Stock 
pursuant to proper written instructions, the Administrator will maintain the 
confidentiality of a Participant's election to tender or not tender shares of 
Common Stock.

     17.    CASH DIVIDENDS, STOCK DIVIDENDS AND SPLITS.  Any cash dividends 
paid on shares credited to a Participant's Plan Account will, when received 
by the Administrator, be credited to the Participant's Plan Account and used 
to purchase additional shares on the next Purchase Date.  Any stock dividends 
and any shares received as a result of a stock split on any shares of Common 
Stock credited to a Participant's Plan Account will, when received by the 
Administrator, be credited to the Participant's Plan Account.

     18.    STATEMENTS.  As soon as practicable after the cash credited to 
the Participant's Plan Account has been applied to the purchase of shares of 
Common Stock (but in no event later than 20 calendar days after the purchase) 
the Administrator will mail a statement to the Participant summarizing the 
transactions in the Participant's Plan Account since the last statement. 

     19.    NO RIGHTS AS A STOCKHOLDER.  None of the rights or privileges of 
a stockholder of the Company shall exist with respect to shares of Common 
Stock purchased under this Plan until a certificate representing such shares 
is issued.

     20.    RIGHTS NOT TRANSFERABLE.  Except as hereinafter set forth and 
unless otherwise provided by law, no Participant shall have the right to 
sell, assign, transfer, pledge, or otherwise dispose of or encumber either 
the right to participate in the Plan or any interest in the Participant's 
Plan Account, and such right and interest shall not be liable for or subject 
to the debts, contracts, or liabilities of such Participant.  If any such 
action is taken by the Participant, or any claim asserted by another party in 
respect of such right and interest, such action or claim will be treated as 
notice of cancellation, and except as may otherwise be required by law, such 
event shall be deemed to be a withdrawal from the Plan and the Participant's 
Plan Account shall be repaid to him as provided in Section 12.  

     Provided, however, that a Participant may designate in writing (on a 
form provided by the Plan Committee) the person who shall have the right to 
receive the Participant's Plan Account in the event of the Participant's 
death. In the event of death, if a Participant has not designated a person to 
receive the Participant's Plan Account, such Participant's Plan Account shall 
be distributed to the Participant's estate. 

     21.    APPLICATION OF FUNDS.  All funds received or withheld by the Plan 
Committee under this Plan as Payroll Deductions shall be held by the Company 
without segregation and may be used for any general corporate purpose without 
restriction.

     22.    ADJUSTMENTS UPON CHANGES IN CAPITALIZATION.  Notwithstanding any 
other provision of the Plan, in the event of any change in the outstanding 
Common Stock by reason of a stock dividend, recapitalization, merger, 
consolidation, split-up, combination or exchange of shares, or the like, the 
aggregate number and class of shares available under the Plan, the number and 
class of shares subject to outstanding 


                                      -5-

<PAGE>

Offerings, the maximum number of shares which an individual Eligible Employee 
may purchase, and the Initial Offering Price shall be proportionately 
adjusted, and such other adjustments shall be made as may be deemed 
equitable, by the Plan Committee, whose determinations shall be conclusive.

     23.    AMENDMENTS OF THE PLAN.  Except as provided below, the 
Compensation Committee may at any time, and from time to time, make such 
changes in and additions to the Plan as the Compensation Committee deems 
advisable. However, the following amendments may only be made by the Board of 
Directors with approval by vote of the holders of a majority of shares of 
Common Stock voted at a properly convened meeting at which a quorum is 
present: (a) increase the maximum number of shares which may be purchased 
under the Plan, (b) reduce the purchase price per share, or (c) amend the 
requirements for an Eligible Employee. No amendment of the Plan may, without 
the consent of the Participant with respect to any outstanding Offering, 
materially and adversely affect the Eligible Employee's rights with respect 
to such Offering.

     24.    TERMINATION OF THE PLAN.  This Plan shall terminate (a) on the 
date that all of the shares authorized for sale under the Plan have been 
purchased, except as otherwise extended by authorizing additional shares, or 
(b) at any time, at the discretion of the Board of Directors of the Company; 
provided, however, that no termination shall affect outstanding Offerings.

     Upon termination of the Plan and the exercise or lapse of all Offering 
rights hereunder, all remaining amounts credited to Plan Accounts of 
Participants shall be returned to such Participants in cash, without interest.

     25.    ALLOCATION OF SHARES IF EXCEED MAXIMUM OFFERED.  If the total 
number of shares which would otherwise be purchased by Participants through 
Payroll Deductions under any Offering exceeds the shares available for 
purchase under the Offering, the Plan Committee may allocate the available 
shares among the Participants on any basis consistent with the terms of the 
Plan, and any remaining funds credited to a Participant's Plan Account on the 
Purchase Date shall be  returned to the Participant in cash, without 
interest. 

     26.    GOVERNMENTAL AND OTHER REGULATIONS.  The obligation of the 
Company to issue or transfer and deliver shares under this Plan shall be 
subject to (a) compliance with all applicable laws, governmental rules and 
regulations and administrative action, (b) the effectiveness of a 
Registration Statement under the Securities Act of 1933, as amended, with 
respect to such issue or transfer, if deemed necessary or appropriate by 
counsel for the Company, and (c) the condition that the shares of Common 
Stock reserved for issuance upon the purchase of shares subject to Offering 
under the Plan shall have been listed (or authorized for listing upon 
official notice of issuance) upon each securities exchange on which 
outstanding shares of the same class may then be listed.

     27.    APPROVAL OF STOCKHOLDERS.  The Plan has been adopted by the Board 
of Directors of the Company, subject to the approval of the stockholders of 
the Company.  If the stockholders do not approve the Plan by a vote of the 
holders of a majority of shares of Common Stock voted at a properly convened 
meeting at which a quorum is present, the Plan shall be immediately 
terminated and all funds held in Participants' Plan Accounts shall be 
returned to such Participants in cash, with interest at 5% per annum from the 
date of transfer to such accounts to the date of refund. If the stockholders 
have not approved the Plan by a vote of the holders of a majority of shares 
of Common Stock voted at a properly convened meeting at which a quorum is 
present within twelve (12) months after the date of adoption of the Plan by 
the Board of Directors, the Plan shall terminate on the date which is twelve 
(12) months after the date of adoption of the Plan by the Board, and all 
funds held in Participants' Plan Accounts shall be returned to such 
Participants in cash, with interest at 5% per annum from the date of transfer 
to such accounts to the date of refund.  If the stockholders have not 
approved the Plan by a vote of the holders of a majority of shares of Common 
Stock voted at a properly convened meeting at which a quorum is present prior 
to the last day of the first Offering Period, no funds in a Participant's 
Plan Account may be used to purchase shares under Section 7 above until such 
stockholder approval has been 


                                      -6-

<PAGE>

obtained; in that event, the first Purchase Date shall be the fifth business 
day after the date of stockholder approval. 

     28.    $25,000 LIMITATION. No Eligible Employee shall be included in an 
Offering which permits him to purchase Common Stock under all employee stock 
purchase plans of the Company and its subsidiaries to accrue (within the 
meaning of Section 423(b)(8) of the Code) at a rate which exceeds $25,000 of 
fair market value of such capital stock (determined at the Offering Date) for 
each calendar year in which such Offering is outstanding at any time.

     29.    INDEMNIFICATION.  No current or previous member of the Board of 
Directors, the Compensation Committee, or the Plan Committee, nor any officer 
or employee of the Company acting on behalf of the Board of Directors, the 
Compensation Committee, or the Plan Committee, shall be personally liable for 
any action, determination, or interpretation taken or made in good faith with 
respect to the Plan, and all such members of the Board of Directors, the 
Compensation Committee, or the Plan Committee and each and any officer or 
employee of the Company acting on their behalf shall, to the extent permitted 
by law, be fully indemnified and protected by the Company in respect of any 
such action, determination or interpretation.  The foregoing right of 
indemnification shall not be exclusive of any other rights of indemnification 
to which such individuals may be entitled under the Company's Certificate of 
Incorporation or Bylaws, as a matter of law, or otherwise.

     30.    INVESTMENT INTENT.  The Company may require that there be 
presented to and filed with it by any Participant(s) under the Plan, such 
evidence as it may deem necessary to establish that the rights to purchase 
Common Stock granted or the shares of Common Stock to be purchased or 
transferred hereunder are being acquired for investment and not with a view 
to their distribution.

     31.    NO RIGHT TO CONTINUE EMPLOYMENT.  This Plan does not constitute a 
contract of employment.  Nothing in the Plan or in any related documentation 
confers upon any employee the right to continue in the employ of the Company 
or any of its subsidiaries or interferes with or restricts in any way the 
right of the Company or any of its subsidiaries to discharge any employee at 
any time (subject to any contract rights of such employee).

     32.    GOVERNING LAW.  The law of the State of Delaware will govern all 
matters relating to this Plan except to the extent it is superseded by the 
federal laws of the United States of America.

     33.    CONSTRUCTION OF PLAN.  The captions used in this Plan are for 
convenience only and shall not be construed in interpreting the Plan. 
Whenever the context so requires, the masculine shall include the feminine 
and neuter, and the singular shall also include the plural, and conversely.


                                      -7-

<PAGE>

       PROXY      
        FOR       
      ANNUAL      
      MEETING     
        OF        
   STOCKHOLDERS   
SEPTEMBER 29, 1997

                              INPUT/OUTPUT, INC.                  
              THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS   
             FOR THE ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON 
                              SEPTEMBER 29, 1997                  

The undersigned stockholder acknowledges receipt of the Notice of Annual 
Meeting of Stockholders and the Proxy Statement, each dated August 29, 1997, 
and hereby appoints Charles E. Selecman and Robert P. Brindley, or either of 
them, proxies for the undersigned, each with full power of substitution, to 
vote all of the undersigned's shares of common stock of Input/Output, Inc. 
(the "Company") at the Annual Meeting of Stockholders of the Company to be 
held at the Stafford Civic Center, 1415 Constitution Avenue, Stafford, Texas 
77477, on Monday, September 29, 1997 at 10:00 a.m., Stafford, Texas time, and 
at any adjournments or postponements thereof.

                        (PLEASE SIGN ON REVERSE SIDE)

<PAGE>
                              INPUT/OUTPUT, INC.
      PLEASE MARK VOTE IN OVAL IN THE FOLLOWING MANNER USING DARK INK ONLY

1. Election of Directors, Nominees: Robert P. Brindley,  For   Withheld  For All
   Shelby H. Carter, Jr. and Theodore H. Elliott, Jr.    All     All     Except 
                                                         / /     / /       / /  
   For all, except nominee's written in below:

   --------------------------------------------------

2. The adoption of the Input/Output, Inc. Employee       For   Against   Abstain
   Stock Purchase Plan.                                  / /     / /       / /  

3. The ratification of the appointment of KPMG Peat      For   Against   Abstain
   Marwick LLP as the Company's independent              / /     / /       / /  
   certified public accountants for the fiscal year
   ending May 31, 1998.

4. In their discretion, upon such other matters as       For   Against   Abstain
   may properly come before the meeting.                 / /     / /       / /  

The board of directors recommends a vote FOR the nominees and proposals above 
and if no specification is made, the shares will be voted for such nominees 
and proposals.

Dated                                   , 1997
     ----------------------------------

- ----------------------------------------------
            Stockholder's Signature

- ----------------------------------------------
            Stockholder's Signature

Signature should agree with name printed hereon. If Stock is held in the name 
of more than one person, EACH joint owner should sign. Executors, 
administrators, trustees, guardians, and attorneys should indicate the 
capacity in which they sign. Attorneys should submit powers of attorney.

PLEASE SIGN, DATE AND RETURN THE PROXY IN THE ENVELOPE ENCLOSED. THIS PROXY 
WILL BE VOTED IN THE MANNER DIRECTED HEREIN BY THE UNDERSIGNED STOCKHOLDER. 
IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED FOR THE ELECTION OF ALL 
NOMINEES IN ITEM 1, FOR THE PROPOSALS SET FORTH IN ITEMS 2 AND 3 AND WILL 
GRANT DISCRETIONARY AUTHORITY PURSUANT TO ITEM 4. THIS PROXY WILL REVOKE ALL 
PRIOR PROXIES SIGNED BY YOU.



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