CROSS TIMBERS OIL CO
DEF 14A, 1998-04-24
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>
 
                            SCHEDULE 14A INFORMATION
PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934


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 (S) 240.14a-11(c) or (S) 240.14a-12

                           CROSS TIMBERS OIL COMPANY
- --------------------------------------------------------------------------------
                (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)(4) and 0-11.
     1)  Title of each class of securities to which transactions 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>
 
  CROSS TIMBERS OIL COMPANY
================================================================================

  810 Houston Street, Suite 2000
  Fort Worth, Texas 76102



April 17, 1998



Dear Stockholder:

  On behalf of the Board of Directors, we invite you to attend the Annual
Meeting of Stockholders to be held on the First Floor of the W. T. Waggoner
Building, 810 Houston Street, Fort Worth, Texas, on Tuesday, May 19, 1998 at
10:00 a.m. local time.

  Matters to be voted upon are listed in the accompanying Notice of Annual
Meeting.  Additionally, we will review the Company's operating results for 1997
and our plans for the year ahead.

  WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING, IT IS IMPORTANT THAT YOUR
SHARES BE REPRESENTED. PLEASE TAKE A MOMENT TO COMPLETE, SIGN AND MAIL THE
ENCLOSED PROXY CARD AS SOON AS POSSIBLE.  IF YOU PLAN TO ATTEND THE MEETING, YOU
MAY REVOKE YOUR PROXY PRIOR TO OR AT THE MEETING AND VOTE IN PERSON.


Sincerely,



Bob R. Simpson                           Steffen E. Palko
Chairman of the Board and                Vice Chairman and
Chief Executive Officer                  President
 
<PAGE>
 
     CROSS TIMBERS OIL COMPANY
================================================================================

     810 Houston Street, Suite 2000
     Fort Worth, Texas 76102



NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON MAY 19, 1998



To the Stockholders of Cross Timbers Oil Company:

     The Annual Meeting of Stockholders of Cross Timbers Oil Company ("the
Company") will be held on Tuesday, May 19, 1998, at 10:00 a.m. local time, on
the First Floor of the W. T. Waggoner Building, 810 Houston Street, Fort Worth,
Texas, for the following purposes:

     1. To elect three directors;

     2. To approve the 1998 Stock Incentive Plan;

     3. To approve the 1998 Royalty Trust Option Plan;

     4. To transact any other business that may properly come before the meeting
        or any adjournments thereof.

     By resolution of the Board of Directors, only stockholders of record as of
the close of business on Monday, March 23, 1998, are entitled to receive notice
of, and to vote at, the Annual Meeting.

     The Annual Report of the Company, including financial statements for the
year ended December 31, 1997, accompanies this Proxy Statement.

     Your attention is directed to the Proxy Statement for further information
about each of the matters to be considered.

     YOU ARE CORDIALLY INVITED TO ATTEND THE MEETING.  WHETHER OR NOT YOU PLAN
TO BE PRESENT, PLEASE DATE AND SIGN THE ACCOMPANYING PROXY CARD EXACTLY AS YOUR
NAME APPEARS THEREON, INDICATING YOUR VOTES BY MARKING THE APPROPRIATE BALLOT
BOXES, AND RETURN IT PROMPTLY IN THE ENCLOSED ENVELOPE.

          By Order of the Board of Directors,



          Virginia Anderson
          Secretary

Fort Worth, Texas
April 17, 1998
<PAGE>
 
     CROSS TIMBERS OIL COMPANY
================================================================================

     810 Houston Street, Suite 2000
     Fort Worth, Texas 76102


PROXY STATEMENT FOR ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ON MAY 19, 1998

     This Proxy Statement is provided in connection with the solicitation of
proxies by the Board of Directors of Cross Timbers Oil Company ("the Company")
for the Annual Meeting of Stockholders to be held on Tuesday, May 19, 1998, and
any adjournment thereof.  This Proxy Statement and the accompanying form of
proxy are first being mailed to stockholders on or about April 17, 1998.  The
Annual Meeting is called for the purposes stated in the accompanying notice of
the meeting.

SHARES OUTSTANDING AND VOTING RIGHTS

     All stockholders of record of the Company's $.01 par value common stock
("Common Stock") and $.01 par value Series A Convertible Preferred Stock
("Preferred Stock") as of March 23, 1998 are entitled to vote at the Annual
Meeting.  As of that date, there were 38,979,309 shares of Common Stock and
1,138,729 shares of Preferred Stock issued and outstanding.  Each share of
Common Stock is entitled to one vote and each share of Preferred Stock is
entitled to 2.16 votes (with any resulting fractional votes rounded to the
nearest whole number) on each matter to be voted on at the Annual Meeting.
Stockholders are not entitled to vote cumulatively for the election of directors
or on any other matter.

     The Board of Directors requests that you execute and return the proxy
promptly, whether or not you plan to attend the Annual Meeting.  A majority of
the outstanding shares entitled to vote must be represented in person or by
proxy at the Annual Meeting in order to constitute a quorum.

     A proxy marked "abstain" on a matter will be considered to be represented
at the Annual Meeting but not voted on such matter and will have the same effect
as a vote "against" the matter.  Shares registered in the names of brokers or
other "street name" nominees for which proxies are voted on some but not all
matters will be considered to be voted only as to those matters actually voted,
and will not be voted or considered as shares present on any matters for which
such shares were not voted because the beneficial holder did not provide voting
instructions (commonly referred to as "broker non-votes").

     If a proxy is properly signed and is not revoked by the stockholder, the
shares it represents will be voted at the Annual Meeting in accordance with the
stockholder's instructions.  If no specific voting instructions are designated,
the shares will be voted as recommended by the Board of Directors.

     A proxy may be revoked at any time before it is voted at the Annual
Meeting.  A stockholder may revoke a prior-dated proxy by executing and
delivering a subsequent proxy relating to the same shares or by attending the
Annual Meeting and voting in person at that time.  Otherwise, revocation of a
proxy must be communicated in writing to the Secretary of the Company at its
principal office, 810 Houston Street, Suite 2000, Fort Worth, Texas 76102.

COST OF SOLICITATION

     The Company will bear the cost of soliciting proxies, including the charges
and expenses of brokerage firms and other custodians, nominees and fiduciaries
for forwarding proxy materials to beneficial owners of Common Stock.
Solicitations will be made primarily by mail, but certain directors, officers or
other employees of the Company may solicit proxies in person, by telephone or by
other means.  Such persons will not receive special compensation for such
solicitation services.  The Company has engaged ChaseMellon Shareholder
Services, L.L.C., to solicit proxies from brokers, banks, nominees and other
institutional holders for a fee of $4,500 plus reimbursement for all reasonable
out-of-pocket expenses.

                                                                               1
<PAGE>
 
ITEM 1.   ELECTION OF DIRECTORS

     In accordance with the Bylaws of the Company, the members of the Board of
Directors are divided into three classes, in as equal number as possible, with
staggered three-year terms.  Each director's term of office continues until the
third Annual Meeting of stockholders following his election to office and until
a successor is duly elected and qualified.  The terms of Class II, Class III and
Class I directors expire at the Annual Meeting of stockholders in 1998, 1999 and
2000, respectively.

     The Board of Directors has nominated Bob R. Simpson and Scott G. Sherman
for election as directors in Class II.  Class II directors will serve for 
three-year terms continuing until the Annual Meeting in May 2001 and until their
successors are elected and qualified. Additionally, the Board has nominated Jack
P. Randall for election as director in Class III to serve until the Annual
Meeting in May 1999. Mr. Randall has served as a director since August 19, 1997,
following the resignation of Charles B. Chitty on June 10, 1997. All nominees
are currently serving as directors and have consented to serve for their new
terms. Biographical information (including ages as of April 1, 1998) follows for
each person nominated, as well as for each director whose term in office will
continue after the Annual Meeting.

     It is the intention of those persons named on the accompanying proxy to
vote in favor of the three nominees listed below.  Should any one or more of
these nominees become unavailable for election, the proxies may be voted with
discretionary authority for any substitute recommended by the Board.  Directors
are elected by a majority of the votes of stockholders present in person or
represented by proxy at the Annual Meeting.

     If all nominees are elected, the Board will comprise the following six
members, three nonemployee directors and three directors who are executive
officers of the Company.


NOMINEES FOR DIRECTOR

- --------------------------------------------------------------------------------
C L A S S  I I    (Term Expires 2001)
- --------------------------------------------------------------------------------


BOB R. SIMPSON    Age 49. Mr. Simpson has been a director of the Company since
                  1990. A co-founder of the Company with Mr. Palko, Mr. Simpson
                  has been Chairman since July 1, 1996 and has been Chief
                  Executive Officer or held similar positions with the Company
                  and its predecessors since 1986. Mr. Simpson was Vice
                  President of Finance and Corporate Development of Southland
                  Royalty Company (1979-1986) and Tax Manager of Southland
                  Royalty Company (1976-1979).

SCOTT G. SHERMAN  Age 64. Mr. Sherman has been a director of the Company since
                  1990. Mr. Sherman has been sole owner of Sherman Enterprises,
                  a personal investment firm, for the past 11 years. Previously,
                  Mr. Sherman owned and operated Eaglemotive Industries, an
                  automotive parts manufacturing company, for 18 years.


- --------------------------------------------------------------------------------
C L A S S  I I I  (Term expires 1999)
- --------------------------------------------------------------------------------


JACK P. RANDALL   Age 48. Mr. Randall was appointed by the Board in August 1997,
                  after the resignation of Charles Chitty. He is the president
                  and co-founder of Randall & Dewey, Inc., an oil and gas
                  consulting firm. Prior to that, he was with Amoco Production
                  Company (1975-1989) where he was Manager of Acquisitions and
                  Divestitures for seven years. 



2
<PAGE>
 
DIRECTORS CONTINUING IN OFFICE

- --------------------------------------------------------------------------------
C L A S S  I       (Term Expires 2000)
- --------------------------------------------------------------------------------

STEFFEN E. PALKO    Age 47. Mr. Palko has been a director of the Company since
                    1990. A co-founder of the Company with Mr. Simpson, Mr.
                    Palko has been Vice Chairman and President or held similar
                    positions with the Company and its predecessors since 1986.
                    Mr. Palko was Vice President-Reservoir Engineering of
                    Southland Royalty Company (1984-1986) and Manager of
                    Reservoir Engineering of Southland Royalty Company 
                    (1982-1984).

J. LUTHER KING, JR. Age 57. Mr. King has been a director of the Company since
                    1991. Since 1979, Mr. King has served as President,
                    Principal and Portfolio Manager/Analyst of Luther King
                    Capital Management Corporation, an investment management
                    firm of which Mr. King is the majority shareholder.
                    Previously, he was Vice President and Director of Lionel D.
                    Edie & Company, an investment management firm.

- --------------------------------------------------------------------------------
C L A S S  I I I    (Term expires 1999)
- --------------------------------------------------------------------------------

J. RICHARD SEEDS    Age 52. Mr. Seeds has been a director of the Company since
                    July 1996. From May 1997 to present, Mr. Seeds has served as
                    Executive Vice President. From August 1993 to May 1997, Mr.
                    Seeds was Career Guidance Counselor with the Springtown
                    Independent School District. Mr. Seeds was an independent
                    personal investment manager from 1986 to 1993. Mr. Seeds was
                    Vice President of Finance and Controller of Southland
                    Royalty Company (1979-1986) and Controller of Southland
                    Royalty Company (1977-1979).

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

DIRECTORS' COMPENSATION, BOARD MEETINGS AND COMMITTEES

     Employee directors receive no additional compensation for service on the
Board of Directors.  During 1997 each nonemployee director received 3,375 shares
of Common Stock as compensation for services as director to the Company and was
also granted 2,250 stock options pursuant to the 1997 Stock Incentive Plan.

     The Board of Directors held six meetings during 1997.  Additionally,
management frequently discusses Company matters with the directors on an
informal basis.  All directors attended at least 75 percent of the aggregate
number of meetings of the Board and the Committees on which they served during
1997. The Board of Directors does not have a nominating committee.  The
permanent committees of the Board, number of meetings held during 1997, current
membership and functions are as follows:

     AUDIT COMMITTEE (three meetings) - Jack P. Randall, Chairman; J. Luther
King, Jr. and Scott G. Sherman. The primary functions of the Audit Committee are
to monitor the Company's internal accounting controls, review financial
statements and related information, and review the services and fees of the
independent auditors.

     COMPENSATION COMMITTEE (four meetings) - J. Luther King, Chairman, and
Scott G. Sherman.  Jack P. Randall was a member during 1997.  The primary
functions of the Compensation Committee are to establish and approve the terms
of employment of the Chairman and Vice Chairman and to review and approve
management's recommendations concerning compensation of the other executive
officers and certain other employees.  The Compensation Committee also grants
all stock options and makes all decisions regarding interpretations of the 1991,
1994 and 1997 Stock Incentive Plans.

                                                                               3
<PAGE>
 
SECURITY OWNERSHIP OF MANAGEMENT AND CERTAIN BENEFICIAL OWNERS

     The following table sets forth as of February 1, 1998, the beneficial
ownership of Common Stock by directors, the five continuing executive officers
named in the Summary Compensation Table, all directors and executive officers as
a group, and all persons who were known to the Company to be the beneficial
owners of more than five percent of the outstanding shares of Common Stock.  All
shares of Common Stock and options have been adjusted for the three-for-two
stock split effected February 25, 1998.
 
<TABLE> 
<CAPTION> 
                                                   COMMON STOCK BENEFICIALLY OWNED (a)
                                                   -------------------------------------
                                                   NUMBER OF
  NAME                                             SHARES                      PERCENT
  -----------------------------------------------  ---------                   ---------
<S>                                                <C>                         <C>
  
    DIRECTORS AND EXECUTIVE OFFICERS (b):
    Bob R. Simpson (c)...........................  1,560,445                      4.0%
    Steffen E. Palko (c).........................  1,009,098                      2.6
    J. Richard Seeds (c)(d)......................     89,738                      *
    J. Luther King, Jr. (e)......................    191,902                      *
    Jack P. Randall..............................      2,250                      *
    Scott G. Sherman (d)(f)......................     97,837                      *
    Louis G. Baldwin (c).........................    208,897                      *
    Kenneth F. Staab (c).........................    184,849                      *
    Keith A. Hutton (c)..........................    152,005                      *
    Directors and executive officers as a group                 
      (14 persons) (c)...........................  4,019,140                     10.1
  
    CERTAIN BENEFICIAL OWNERS:
    Baron Capital Group, Inc. (g)................  5,601,525                     14.4
      767 Fifth Avenue, 24th Floor
      New York, NY  10153
    Stein Roe & Farnham Incorporated (h).........  2,016,225                      5.2
      One South Wacker Drive
      Chicago, IL  60606
    White River Corporation......................  5,400,013                     13.9
      777 Westchester Avenue, Suite 201
      White Plains, NY 10604
</TABLE>
 
   ---------------------

*   Less than 1%

(a) Unless otherwise indicated, all shares listed are directly held with sole
    voting and investment power.

(b) Includes options, issued under the 1991, 1994 and 1997 Stock Incentive Plans
    that are exercisable within 60 days of February 1, 1998, to acquire Common
    Stock, as follows: Mr. Simpson, 225,000; Mr. Palko, 129,000; Mr. Seeds,
    75,450; Mr. King, 11,700; Mr. Randall, 2,250; Mr. Sherman, 13,950; Mr.
    Baldwin, 52,500; Mr. Staab, 52,500; Mr. Hutton, 65,577; all directors and
    executive officers as a group, 886,437.

(c) Includes Common Stock that may be deemed to be beneficially owned pursuant
    to the terms of the Cross Timbers Oil Company 401(k) Plan that was held by
    such plan as of December 31, 1997.

(d) Includes shares of Common Stock that would be beneficially owned upon
    conversion of the Company's Series A Convertible Preferred Stock as follows:
    Mr. Seeds, 3,473; Mr. Sherman (owned by the Scott Sherman Family Limited
    Partnership), 69,262; all directors and executive officers as a group,
    72,735.

(e) Includes 126,202 shares owned by LKCM Investment Partnership ("Investment
    Partnership"). Mr. King is the general partner and portfolio manager of the
    Investment Partnership. Mr. King is president of Luther King Capital
    Management Corporation which is the investment advisor of the Investment
    Partnership. Luther King Capital Management Corporation and an affiliated
    company are also limited partners of the Investment Partnership. Mr. King
    has the power to direct the voting and disposition of these shares.

(f) Includes 80,512 common shares owned by the Scott Sherman Family Limited
    Partnership.  See also (d) above.

(g) As reported on Schedule 13G, Baron Capital Group, Inc. has sole power to
    vote and dispose of 149,250 shares and shared power to vote and dispose of
    5,452,275 shares at December 31, 1997.

(h) As reported on Schedule 13G, SR&F Special Portfolio has the sole power to
    vote 2,016,225 shares and Stein Roe & Farnham Incorporated has the sole
    power to dispose of 2,016,225 shares at December 31, 1997.

4
<PAGE>
 
EXECUTIVE COMPENSATION

     The table below provides information with respect to the Chief Executive
Officer of the Company and the four other most highly compensated executive
officers of the Company for the years ended December 31, 1997, 1996 and 1995.
All shares of Common Stock and Common Stock prices have been adjusted for the
three-for-two stock split effected February 25, 1998.
<TABLE>
<CAPTION>
 
SUMMARY COMPENSATION TABLE
- ---------------------------------------------------------------------------------------------------------------------
 
                                ANNUAL COMPENSATION                      LONG-TERM COMPENSATION
                                -----------------------------------      -----------------------------
                                                                         RESTRICTED         SECURITIES
                                                       OTHER ANNUAL      STOCK              UNDERLYING   ALL OTHER
NAME AND                        SALARY         BONUS   COMPENSATION      AWARD(s)           OPTIONS/     COMPENSATION
PRINCIPAL POSITION        YEAR  ($)         ($)        ($)(a)            ($)                SARs (#)     ($)(b)
- ------------------        ----  ---------   --------   ------------      ---------          ----------   ------------
<S>                       <C>   <C>         <C>        <C>               <C>           <C>  <C>          <C>
 
Bob R. Simpson            1997    404,167    350,000         -           1,595,250     (c)     225,000         18,187
  Chairman of the         1996    309,299    300,000         -             477,500     (d)        -            17,785
   Board and Chief        1995    301,053    200,000         -             843,750     (e)        -            17,144
   Executive Officer
 
Steffen E. Palko          1997    317,083    225,000         -             797,625     (c)     129,000         14,793
  Vice Chairman           1996    302,215    200,000         -             358,125     (d)        -            17,586
   and President          1995    301,053    150,000         -             278,438     (e)        -            16,966
 
Louis G. Baldwin          1997    151,432     93,000          -               -                 52,500          9,500
  Senior Vice             1996    146,247     66,000          -            143,250     (d)        -             9,500
   President and Chief    1995    140,680     56,000          -            122,344     (e)        -             9,240
   Financial Officer
 
Kenneth F. Staab          1997    151,379     84,000          -               -                 52,500          9,500
  Senior Vice             1996    145,738     68,000          -            143,250     (d)        -             9,500
   President -            1995    140,133     70,000          -            122,344     (e)        -             9,240
   Engineering
 
Keith A. Hutton           1997    134,495    103,000          -               -                 63,000          9,500
  Senior Vice             1996    106,496     66,000          -             95,500     (d)      27,619          9,500
   President -            1995    102,400     63,000          -            118,125     (e)      12,881          9,240
   Asset Development
</TABLE>
- -----------------------------------------------


(a) Amounts do not include perquisites and other personal benefits, securities
    or property, because the total annual amount of such compensation did not
    exceed the lesser of $50,000 or 10% of the total of annual salary and bonus
    reported for the named executive.

(b) Includes Company 401(k) Plan contributions for each officer of $9,500,
    $9,500 and $9,240 during 1997, 1996 and 1995, respectively. The remaining
    amounts for Messrs. Simpson and Palko represent life insurance premiums paid
    by the Company.

(c) Represents the value of 54,000 and 27,000 performance shares of Common Stock
    granted on May 20, 1997 and 54,000 and 27,000 performance shares of Common
    Stock granted on October 1, 1997 to Messrs. Simpson and Palko, respectively,
    pursuant to the 1997 Stock Incentive Plan. The performance shares granted on
    May 20, 1997 vested when the stock price closed at $16.67 on October 1,
    1997; at that time, the additional 54,000 and 27,000 performance shares were
    granted that vested when the stock price closed at or above $20 on March 26,
    1998. The shares are valued in the above table at $12.58 and $16.96, the
    closing Common Stock price on the grant dates of May 20, 1997 and October 1,
    1997, respectively. Based on the December 31, 1997 Common Stock closing
    price of $16.63, Mr. Simpson's restricted stock holdings of 54,000 shares
    had a year-end value of $897,950 and Mr. Palko's restricted stock holdings
    of 27,000 shares had a year-end value of $448,875. Quarterly Common Stock
    dividends are paid to holders of performance shares.

(d) Represents the value of 45,000, 33,750, 13,500, 13,500 and 9,000 performance
    shares of Common Stock granted in 1996 to Messrs. Simpson, Palko, Baldwin,
    Staab and Hutton, respectively, pursuant to the 1994 Stock Incentive Plan.
    Performance shares vested when the Common Stock price closed at or above
    $13.33 on January 13, 1997.  These shares are valued in the above table at
    $10.61 per share, the closing Common Stock price on the grant date of
    November 20, 1996.

(e) Represents the value of 112,500, 37,125, 16,312, 16,312 and 15,750
    performance shares of Common Stock granted in 1995 to Messrs. Simpson,
    Palko, Baldwin, Staab and Hutton, respectively, pursuant to the 1994 Stock
    Incentive Plan. These performance shares vested in two equal amounts during
    1996 when the Common Stock price reached $9.33 and $10.67. These shares are
    valued in the above table at $7.50 per share, the closing Common Stock price
    on the grant date of November 21, 1995.

                                                                               5
<PAGE>
 
STOCK INCENTIVE PLANS
 
    The Company adopted the 1991 Stock Incentive Plan ("the 1991 Plan"), the
1994 Stock Incentive Plan ("the 1994 Plan") and the 1997 Stock Incentive Plan
("the 1997 Plan") to provide incentives for officers, other key employees and
nonemployee directors.

    Shown in the tables below are Option/SAR grants during 1997, Option/SAR
exercises during 1997 and Option/SAR values as of December 31, 1997 for officers
named in the Summary Compensation Table.  All shares of Common Stock, Options,
SARs and exercise prices have been adjusted for the three-for-two stock split
effected February 25, 1998.

<TABLE>
<CAPTION>
OPTION/SAR GRANTS IN 1997
- -------------------------------------------------------------------------------------------------------------
INDIVIDUAL GRANTS
- -------------------------------------------------------------------------------
           
                                         PERCENTAGE
                           NUMBER OF     OF TOTAL                                  POTENTIAL REALIZED VALUE
                           SECURITIES    OPTIONS/                                  AT ASSUMED ANNUAL RATES OF
                           UNDERLYING    SARS                                      STOCK PRICE APPRECIATION
                           OPTIONS/      GRANTED TO   EXERCISE                     FOR OPTION TERM (a)
                           SARS          EMPLOYEES    PRICE           EXPIRATION   --------------------------
NAME                       GRANTED       IN 1997      ($/SHARE)       DATE           5% ($)          10% ($)
- -----------------------    ----------    --------     ----------      ----------   ---------        ---------
<S>                        <C>           <C>          <C>             <C>          <C>              <C>
Bob R. Simpson              225,000       12.9%         12.04         05/20/07     1,702,900        4,317,400
Steffen E. Palko            129,000        7.4%         12.04         05/20/07       976,300        2,475,300
Kenneth F. Staab             52,500        3.0%         12.04         05/20/07       397,300        1,007,400
Louis G. Baldwin             52,500        3.0%         12.04         05/20/07       397,300        1,007,400
Keith A. Hutton              63,000        3.6%         12.04         05/20/07       476,800        1,208,900
</TABLE>
- -------------------------------------

(a) Based on the fair market value at the date of grant and the stated annual
    appreciation rate, compounded annually, for the option term of ten years.
    The assumed annual appreciation rates of 5% and 10% were established by the
    Securities and Exchange Commission and therefore are not intended to
    forecast possible future appreciation, if any, of the Common Stock. However,
    the total potential realized value shown for the above named executives
    represents less than 1.5% of the total appreciation all stockholders would
    realize.

<TABLE>  
<CAPTION> 
AGGREGATED OPTION/SAR EXERCISES IN 1997 AND 12/31/97 OPTION/SAR VALUES
- ------------------------------------------------------------------------------------------------------------------

                                                  NUMBER OF SHARES                  VALUE OF
                    SHARES                        UNDERLYING UNEXERCISED            UNEXERCISED IN-THE-MONEY
                    ACQUIRED                      OPTIONS/SARs AT 12/31/97 (#)      OPTIONS/SARs AT 12/31/97 ($)
                    ON EXERCISE    VALUE          ------------------------------    ------------------------------
NAME                (a) (#)        REALIZED ($)   EXERCISABLE      UNEXERCISABLE    EXERCISABLE      UNEXERCISABLE
- ------------------  -----------    ------------   -----------      -------------    -----------      -------------
<S>                 <C>            <C>            <C>              <C>              <C>              <C>
                                            
Bob R. Simpson      235,687         1,409,445        112,500          112,500          515,625          515,625
Steffen E. Palko    199,125         1,213,547         64,500           64,500          295,625          295,625
Kenneth F. Staab     66,543           407,104         26,250           26,250          120,313          120,313
Louis G. Baldwin     66,543           407,104         26,250           26,250          120,313          120,313
Keith A. Hutton      30,598           186,831         34,077           61,329          167,890          368,684
</TABLE>
- ----------------------------

(a) Included are shares underlying SARs, as follows: Mr. Simpson, 31,500; 
    Mr. Palko, 9,000; Mr. Staab, 1,800; Mr. Baldwin, 1,800.


6
<PAGE>
 
COMPENSATION ARRANGEMENTS

     The Company's bonus plans are designed to reward employees for exceptional
performance and significant contributions to the Company's success.  Bonuses are
generally paid annually or semiannually to employees in certain executive,
professional, supervisory or other key management positions.  All bonuses are
dependent upon an employee's performance exceeding requirements and the
Company's profitability and ability to provide returns to investors.

     The Company sponsors a 401(k) benefit plan that allows employees to
contribute and defer a portion of their wages.  All employees over 21 years of
age and with at least three months of service with the Company may participate.
Employee contributions of up to 10% of wages are matched by the Company.
Employee contributions vest immediately while the Company's contributions vest
100% after three years of service.


EMPLOYMENT AND SEVERANCE AGREEMENTS

     In February 1995, Messrs. Simpson and Palko entered into new employment
agreements effective March 31, 1995 and ending on December 31, 1995, which
automatically continue from year to year thereafter until terminated by either
party upon thirty days written notice prior to each December 31.  Pursuant to
these agreements, Messrs. Simpson and Palko each receive an annual base salary
of at least $300,000.  In December 1996, the Committee increased the annual base
salary of Messrs. Simpson and Palko to $400,000 and $315,000, respectively, and
December 1997, the Committee increased the annual base salary to $450,000 and
$340,000, respectively.  Each employment agreement provides that the employee is
entitled to participate in any incentive compensation program established by the
Company for its executive officers, in a manner approved by the Committee.  The
employee also receives $2,000,000 of life insurance, participates in the group
medical and disability insurance plans of the Company and receives a $700 per
month automobile allowance, as well as fuel, oil, maintenance and insurance
costs for automobiles.  The agreements are subject to early termination upon the
death or disability of the employee, or for cause.  If an agreement is
terminated because of death or disability, the compensation payments continue
for the term of the agreement, reduced by the amount of disability insurance
paid to the employee.  If an agreement is terminated for cause, as defined, the
Company is not required to make additional payments.

     The employment agreements further provide that the employee may terminate
the agreement for "good reason," which means: failure to reelect the employee to
his office, significant change in the employee's duties, reduction of or failure
to provide typical increases in the employee's salary following a change in
control of the Company, relocation of the employee to an office outside the Fort
Worth/Dallas metropolitan area, breach of the agreement by the Company, or
failure to maintain the employee's level of participation in the compensation
and benefit plans of the Company.  If the employee terminates his employment for
good reason after a Change in Control (as defined below), or if the employee is
terminated by the Company in anticipation of, or following, a Change in Control,
the employee is entitled to a lump-sum payment of three times his most recent
annual compensation.  Such compensation includes annual management incentive
compensation and planned level of annual perquisites, but generally excludes
benefits received pursuant to the Company's stock incentive plans.  In addition,
the employee becomes fully vested in the Company's stock incentive plans upon
any such termination.  The lump-sum payment (including the value of full vesting
in the Company's stock incentive plans) will be reduced to the maximum amount
permitted under the Internal Revenue Code ("Code") that does not constitute a
parachute payment, unless the employee elects to receive the full amount. (The
Code defines a parachute payment as any severance payment, contingent upon a
Change in Control, the aggregate present value of which is in excess of three
times the employee's average annual compensation over the past five years.)  If
the termination for good reason occurs other than because of a Change in
Control, the employee is entitled to severance pay in the amount that would have
been paid him under the employment agreement had it not been terminated.

     A "Change in Control" of the Company under the employment agreements is
deemed to have occurred only if:  any person, or persons acting together as a
group, shall become the direct or indirect beneficial owner of more than 50% of
the Company's issued and outstanding voting equity securities; a change in the
majority of the Board of Directors occurs within a twelve-month period (unless
approved by the vote of two-thirds of the directors still

                                                                               7
<PAGE>
 
in office who were directors at the beginning of such twelve-month period); or a
plan or agreement is adopted, approved or executed to dispose of all or
substantially all the assets or outstanding Common Stock of the Company.

     In June 1997, the Board of Directors approved severance protection plans
("Severance Plans") for all employees of the Company.  Under the terms of the
Severance Plans, an employee is entitled to receive a severance payment if a
change of control in the Company occurs and either the employee is terminated
within two years of the change of control or the employee terminates his
employment after a stated period (the President and the Chief Executive Officer
may terminate their employment after three months; Executive Vice Presidents or
Senior Vice Presidents may terminate their employment after six months).  The
Severance Plans will not apply to any employee that is terminated for cause, for
permanent disability, due to an employee's death, or by an employee's own
decision for other than good reason (e.g., change of job status or a required
move of more than 25 miles).  If entitled to severance under the terms of the
Severance Plans, the Chief Executive Officer and President will receive three
times their annual salary and bonus and eighteen months medical, vision, and
dental benefits and Executive Vice Presidents and Senior Vice Presidents will
receive two and one-half times their annual salary and bonus and eighteen months
medical, vision, and dental benefits.

     The Severance Plans also provide that if employees are subject to the 20%
parachute excise tax, then the Company will pay the employee under the Severance
Plan an additional amount to "gross up" the payment so that the employee will
receive the full amount due under the terms of the Severance Plan after payment
of the excise tax. Also, all stock options and performance shares granted under
any existing stock incentive plan will become vested.

     Messrs. Simpson and Palko, who have severance benefits under their
employment agreements as described above, may elect, within ten days of their
termination of employment, to receive severance benefits provided under the
Severance Plans in lieu of, but not in addition to, the severance benefits under
their employment agreements.


REPORT OF THE COMPENSATION COMMITTEE OF THE BOARD OF DIRECTORS

     In 1997, the Compensation Committee of the Board of Directors ("the
Committee") was composed of Messrs. King, Randall and Sherman, all of whom are
nonemployee directors of the Company.  The Committee reviews the Company's
executive compensation program, grants all stock options and makes all policy
decisions regarding interpretations of the 1991 Plan, the 1994 Plan and the 1997
Plan.  The overall policy of the Company's executive compensation program is to
attract, retain and reward executives who are capable of leading the Company in
achieving its business objectives and strategies in a highly competitive
industry.

     The Company participates in four major annual compensation surveys,
prepared by independent consultants, that provide comparative compensation data
for a broad group of domestic companies in the oil and gas industry. Guided by
these surveys, compensation ranges are established and individual executive
compensation is determined based upon the individual's responsibilities and
performance.  Participants in these surveys are not necessarily included in the
Dow Jones Secondary Oil Index, the industry index used by the Company in its
Performance Graph. However, the Committee believes that these surveys provide
the best available compensation data for the Company's most direct competition
for executive talent.

     The Company generally sets its executive compensation at the upper range
cash compensation of executives with competitors having similar
responsibilities.  Adjustments are made to account for cases in which the
responsibilities of Company executives appear to differ from the
responsibilities of executives of the companies surveyed.  The Company's base
salaries have historically been set near the median, so that bonuses, primarily
determined by individual performance, will constitute a substantial portion of
cash compensation.  Annual bonus and other compensation to executive officers
are determined by subjective and quantitative analysis of both corporate and
individual performance, rather than using a predetermined formula.

TAX DEDUCTION LIMITATION FOR EXECUTIVE COMPENSATION

     Section 162(m) of the Internal Revenue Code generally limits the corporate
tax deduction for compensation paid to executive officers named in the Summary
Compensation Table to $1 million, unless certain requirements are

8
<PAGE>
 
met. During 1997, none of the executive officers named in the table received
compensation exceeding the maximum deductible amount. Because the Company's
stock incentive plans comply with Section 162(m), the tax deductions available
to the Company when executive officers exercise their existing stock options or
when their performance shares vest will not be applied against the $1 million
limit. The Compensation Committee intends to monitor compensation paid to the
Company's executive officers so that the corporate tax deduction is maximized,
while maintaining the flexibility to attract and retain qualified executives.


COMPENSATION OF THE CEO AND PRESIDENT

     The Committee sets the cash compensation of Messrs. Simpson and Palko.  The
Committee believes there is necessarily some subjectivity in setting cash
compensation of the Company's executive officers and does not use predetermined
performance criteria when setting such cash compensation.  In determining
appropriate cash compensation levels, the Committee subjectively and
quantitatively analyzes the individual's performance, the performance of the
Company and the individual's contribution to that performance.  Specific factors
considered in setting bonus levels include the Company's operational and
financial results, success of the Company's acquisition and development programs
and prudent management of the Company's capital structure.  The Committee also
considers the executive's level and scope of responsibility, experience, and the
compensation practices of competitors for executives of similar responsibility.
The Committee does not establish predetermined maximum bonuses.

     The minimum salaries of Messrs. Simpson and Palko are set by employment
contracts approved by the Committee, as described under "Employment and
Severance Agreements" above.  In setting 1997 bonuses for Messrs. Simpson and
Palko, the Committee took into consideration their roles in formulating goals
and implementing the strategy resulting in record levels of oil and gas
production, cash flow from operations, net income and earnings per share.  The
Committee also took into consideration the Company's acquisition of more than
$250 million in producing properties, including an innovative preemptive
strategy for purchasing $195 million in San Juan Basin properties and
establishing a new core area.  Additional factors included two successful
subordinated note offerings totaling $300 million and the divestiture of
approximately $30 million in non-strategic properties.  These significant
achievements increased stockholder value and laid the foundation for achieving
above average growth rates as measured by cash flow per share.

     The Committee relies heavily upon stock-based incentives, including stock
options, stock appreciation rights and performance shares to compensate the
executive employees of the Company.  The Committee believes that stock-based
incentives encourage and reward effective management that results in long-term
corporate financial success, as measured by stock price appreciation.
Stock-based incentives awarded to Messrs. Simpson and Palko and other executive
employees are based on the Committee's subjective evaluation of the employee's
ability to influence the Company's long-term growth and profitability and to
reward outstanding individual performance and contributions to the Company.

     The Compensation Committee awarded 225,000 and 129,000 stock options (as
adjusted for the three-for-two stock split) to Messrs. Simpson and Palko,
respectively, on May 20, 1997.  In accordance with the grant, one-half of these
stock options vested on October 1, 1997 when the Common Stock price first closed
above $16.67. The balance of the stock options vested to Messrs. Simpson and
Palko when the Common Stock price closed at or above $20.00 on March 26, 1998.
Pursuant to the 1997 Plan, the Committee also awarded 54,000 and 27,000
performance shares (as adjusted for the three-for-two stock split) to Messrs.
Simpson and Palko, respectively, on May 20, 1997 (when the Common Stock closing
price was $12.58 per share) that vested when the Common Stock price first closed
above $16.67 on October 1, 1997.  An additional 54,000 and 27,000 performance
shares were awarded to Messrs. Simpson and Palko, respectively, on October 1,
1997 (when the Common Stock closing price was $16.96) that vested when the
Common Stock price closed at or above $20.00 on March 26, 1998.

                            Compensation Committee:
                            ---------------------- 
                              J. Luther King, Jr.
                                Jack P. Randall
                               Scott G. Sherman

                                                                               9
<PAGE>
 
PERFORMANCE GRAPH

     Common Stock of the Company began trading publicly on May 12, 1993.  The
following graph compares the percentage change in the cumulative total
stockholder return on the Common Stock against the total return of the S&P 500
Index and the Dow Jones Oil, Secondary Index for the period of May 12, 1993 to
December 31, 1997. The graph assumes that the value on May 12, 1993 of the
investment in Common Stock (at the initial public offering price) and each index
was $100 and that all dividends were reinvested.


                 COMPARISON OF 55 MONTH CUMULATIVE TOTAL RETURN
               AMONG CROSS TIMBERS OIL COMPANY, THE S&P 500 INDEX
                     AND THE DOW JONES OIL, SECONDARY INDEX
<TABLE>
<CAPTION>
 
       Measurement         Cross Timbers   S&P   Dow Jones Oil,
          Date              Oil Company   Index  Secondary Index
- -------------------------  -------------  -----  ---------------
<S>                        <C>            <C>    <C>
 
       5/12/93                  100        100        100
                                                   
         12/93                  111        107         91
                                                   
         12/94                  120        108         88
                                                   
         12/95                  143        149        102
                                                   
         12/96                  207        183        126
                                                   
         12/97                  311        244        134
 
</TABLE>

     This 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.


RELATIONSHIPS AND TRANSACTIONS WITH MANAGEMENT AND OTHERS

     During 1997, Mr. Simpson sold 65,000 units of beneficial interest ("Units")
in Cross Timbers Royalty Trust (traded on the New York Stock Exchange under the
symbol "CRT") to a third party in a private transaction for $942,500.  Mr.
Simpson had purchased these Units at an average cost of $9.45 per Unit.  The
Company subsequently purchased these Units at market value from the third party
in a private transaction for $942,500.

     During 1997, the Company incurred fees of $1,556,408 and expenses of $5,140
with Randall & Dewey, Inc. for consulting services performed in connection with
certain property divestitures and the acquisition of producing properties in the
San Juan Basin.  Mr. Randall, a director of the Company, is the president and
50% owner of Randall & Dewey, Inc.

10
<PAGE>
 
BENEFICIAL OWNERSHIP REPORTING COMPLIANCE WITH SECTION 16(a) OF THE EXCHANGE ACT

     Section 16(a) of the Exchange Act requires directors and officers of the
Company and persons who own more than ten percent of Common Stock to file with
the Securities and Exchange Commission ("SEC") and the New York Stock Exchange
initial reports of ownership and reports of changes in ownership of Common
Stock.  The SEC requires that copies of such reports be provided to the Company.
To the Companys knowledge, based solely on the information furnished to the
Company and written representations that no other reports were required, all
applicable Section 16(a) filing requirements were complied with during and for
the year ended December 31, 1997.


PROPOSALS BY THE BOARD

ITEM 2.  APPROVAL OF THE 1998 STOCK INCENTIVE PLAN

     On April 13, 1998, the Compensation Committee ("the Committee") of the
Board of Directors adopted the Cross Timbers Oil Company 1998 Stock Incentive
Plan ("1998 Plan"), subject to stockholder approval at the 1998 Annual Meeting.
The following general description of the material features of the 1998 Plan is
qualified in its entirety by reference to the entire document filed as Exhibit A
hereto.

     Purposes.  The purposes of the 1998 Plan are to provide incentives to
directors, officers and employees of the Company to contribute to the Company's
future success and prosperity, thus enhancing the value of the Company for the
benefit of stockholders, to provide management of the Company with a proprietary
ownership interest in the Company, to maintain competitive compensation levels,
to attract and retain competent and talented employees and directors, and to
provide incentives to management of the Company for continuous employment.
Pursuant to the terms of the 1998 Plan, an aggregate of 6,000,000 shares of
Common Stock are available for grant, of which 3,000,000 may be performance
shares.   However, in the aggregate with any other stock incentive plan of the
Company, the Company may not grant nonqualified options, incentive stock
options, or performance shares if the total number of shares of Common Stock
subject to outstanding options and unvested performance shares exceeds 6% of the
total number of shares of Common Stock that the Company has issued and are
outstanding at the time any grants are made.  For example, as of March 31, 1998,
there were 39,148,843 shares of Common Stock issued and outstanding, and thus,
under the terms of the 1998 Plan, no more than 2,348,930 shares could be granted
and outstanding under all of the Company's stock incentive plans.  As of March
31, 1998, there were a total of 1,672,044 options outstanding under the 1991,
1994 and 1997 Plans.  Therefore, only 676,886 additional options or performance
shares could have been granted under the 1998 Plan as of that date.

     The maximum number of shares of Common Stock that may be issued to any
individual pursuant to options or performance shares during any one year is
600,000 and 300,000, respectively, and during the life of the 1998 Plan is
1,200,000 and 600,000, respectively.  No awards may be made under the 1998 Plan
after the tenth anniversary of the effective date of the Plan.  Only the net
shares issued under the 1998 Plan will be counted as issued, and shares of
Common Stock surrendered for payment of the exercise price of an option or for
income tax withholding obligations and shares relating to any unexercised
portion of a terminated or expired option may be made available for issuance
under the 1998 Plan.

     Administration.  The 1998 Plan will be administered by the Committee,
consisting of two or more outside directors.  The Committee will have full power
to select, from among the persons eligible for awards, the individuals to whom
awards will be granted, to make any combination of awards to any participant and
to determine the specific terms of each grant, subject to the provisions of the
1998 Plan.  Members of the Committee currently are Messrs. King and Sherman.

     Eligibility.  Directors, officers and key employees of the Company will be
eligible to receive stock options or performance shares under the 1998 Plan.
Approximately 75 employees would currently qualify to participate in the 1998
Plan.  Members of the Board of Directors who are not employed by the Company
("nonemployee directors") will receive annual automatic grants of stock options
and performance shares.  The Committee has made

                                                                              11
<PAGE>
 
no determination as to which of the directors, executive officers or other
eligible employees or managers of the Company, its subsidiaries and affiliates
will receive grants under the 1998 Plan.

     Stock Options.  The 1998 Plan will permit the granting of incentive stock
options ("ISOs") and non-qualified options.  To qualify as ISOs, options must
meet additional federal income tax requirements, including a limitation that the
aggregate fair market value of ISOs that first become exercisable by an optionee
during any calendar year may not exceed $100,000.  Further, ISOs cannot be
granted to any owner of 10% or more of the total combined voting power of all
classes of stock of the Company or its subsidiaries, unless the ISOs (i) have an
exercise price of 110% of the fair market value of the Common Stock on the date
of grant, and (ii) may not be exercised more than five years from the date of
grant thereof.

     A stock option entitles the grantee to purchase a number of shares of
Common Stock at a price ("Exercise Price"), which will be not less than 100% of
the fair market value of a share of Common Stock on the date the option is
granted.  The Exercise Price must be paid in full with cash or, unless otherwise
provided by the award agreement, by delivery of previously owned Common Stock or
Common Stock being acquired pursuant to such exercise, valued at its fair market
value on the exercise date.  However, in order for the optionee to be able to
pay for the Exercise Price with previously owned Common Stock or with the Common
Stock that the optionee is acquiring pursuant to such exercise, the optionee
must show that he directly owns on the date of exercise shares of Common Stock
sufficient to pay the Exercise Price, and that he has owned such shares for six
months or more.

     The term of each option will be fixed by the Committee but may not exceed
ten years from the date of grant. The Committee will determine at which time or
times each option may be exercised.  Stock options will be evidenced by option
agreements, the terms and provisions of which may differ.  No stock option shall
be transferable by the optionee other than by will or by the laws of descent or
distribution, unless the Committee authorizes all or a portion of the stock
option to be granted to immediate family members or to an entity involving
immediate family members, subject to certain restrictions.

     In the event of termination of employment by reason of death, an option may
thereafter be exercised by the optionee's estate, or by such person who acquires
the right to exercise such option by inheritance, bequest or by reason of such
optionee's death (to the extent it was then exercisable) for one year after such
death.  In the event of termination of employment by reason of permanent
disability, an option may thereafter be exercised (to the extent it was then
exercisable) within one year after such termination.  In the event of
termination of employment by reason of retirement, an option may thereafter be
exercised (to the extent it was then exercisable) within three months
thereafter.  In the event of termination of employment by reason other than
death, retirement, or disability, ISOs terminate immediately and non-qualified
options may be exercised within 30 days after termination, unless termination is
for cause, and then non-qualified options terminate immediately.  The stated
exercise periods can be modified by the Committee.

     Performance Shares.  The Committee may award shares of Common Stock
("Performance Shares") to any person eligible to participate in the 1998 Plan.
In addition to any other restrictions the Committee may place on Performance
Shares, the Committee may, in its discretion, provide that Performance Shares
shall vest upon the satisfaction of performance targets to be achieved during an
applicable Performance Cycle.  Performance Shares may, in the Committee's
discretion, be subject to forfeiture, in whole or in part, in the event that
performance targets established by the Committee are not met.  Any award of
Performance Shares to the Chief Executive Officer or any other named executive
officer, as listed in the prior year's proxy statement, will comply with the
requirements for qualified performance-based compensation under Section 162(m)
of the Internal Revenue Code of 1986, as amended (the "Code") and the Treasury
regulations promulgated thereunder.  With respect to such officers, performance
targets established by the Committee may relate to corporate, group, unit or
individual performance and may be established in terms of market price of Common
Stock, cash flow or cash flow per share, reserve value or reserve value per
share, net asset value or net asset value per share, or earnings.  Upon election
of the participant on the date of vesting, and upon approval by the Committee,
the Company may purchase some or all of the participant's vested Performance
Shares at the fair market value on the date the Committee determines that the
Performance Shares have vested.  Within seven business days after receipt of the
participant's election, the Committee will inform the participant of its
decision whether to approve the purchase of such Performance Shares.

12
<PAGE>
 
     Taxation of ISOs.  No taxable income will be realized by an optionee upon
the grant or exercise of an ISO. If shares of Common Stock are issued to an
optionee pursuant to the exercise of an ISO and if no disposition of such shares
is made within two years after the date of grant or within one year after the
transfer of such shares to such optionee, then, upon the sale of such shares,
any amount realized in excess of the exercise price will be taxed to such
optionee as a long-term capital gain and any loss sustained will be a long-term
capital loss and no deduction will be allowed to the Company for federal income
tax purposes.  If no disqualifying disposition is made in the year of exercise,
the exercise of an ISO will give rise to an adjustment in computing alternative
minimum taxable income that may result in alternative minimum tax liability for
the optionee.

     If shares of Common Stock acquired upon the exercise of an ISO are disposed
of prior to the expiration of either holding period described above, the
optionee will realize ordinary income in the year of such disqualifying
disposition in an amount equal to the excess (if any) of the fair market value
of the shares at exercise (or, if less, the amount realized on the disposition
of the shares) over the exercise price thereof and the Company in general will
be entitled to deduct such amount.  Any additional gain realized by the
participant will be taxed as a short-term, mid-term or long-term capital gain,
depending on how long the shares have been held, and will not result in any
deduction by the Company.  The holding period for mid-term capital gain
treatment is one year to 18 months and for long-term capital gain treatment is
more than 18 months.

     If an ISO ceases to qualify as an ISO for any reason, the option will be
treated as a non-qualified option. Subject to certain exceptions for disability
or death, an ISO generally will not be eligible for the tax treatment described
above if it is exercised more than three months following the termination of
employment.

     Taxation of Non-Qualified Options.  No income will be realized by an
optionee at the time a non-qualified option is granted.  Ordinary income will be
realized by the optionee upon exercise in an amount equal to the difference
between the fair market value of the shares on the date of exercise and the
exercise price (the amount paid for the shares) and the Company in general will
be entitled to a tax deduction in same amount.  At disposition, appreciation (or
depreciation) after the date of exercise will be treated as short-term, mid-term
or long-term capital gain (or loss) depending on how long the shares have been
held.

     Taxation of Common Stock Used to Exercise Options.  Shares of Common Stock
delivered to pay for shares of Common Stock purchased on the exercise of an ISO
or a non-qualified stock option will be valued at the fair market value at the
date of exercise.  Unless the delivery of shares constitutes a disqualifying
disposition of shares acquired upon exercise of an ISO, no taxable gain or loss
will be realized on the surrender of such shares.  For federal income tax
purposes, the optionee receives the same tax basis and holding period in a
number of the new shares equal to the number of old shares exchanged.  The
optionee will also receive a tax basis in the additional shares equal to zero in
the case of an ISO or equal to their fair market value at the date of exercise
in the case of a non-qualified stock option and a new holding period in either
case.

     Taxation of Performance Shares.  A recipient of Performance Shares
generally will recognize ordinary income equal to the fair market value of the
Common Stock at the time the Common Stock is no longer subject to forfeiture
less any amount paid for such stock.  However, a recipient who makes an election
under Section 83(b) of the Code, within thirty days of issuance of the
Performance Shares, will recognize ordinary income on the date of issuance equal
to the fair market value of the Performance Shares at that time less any amount
paid for such stock. The recipient will receive a tax basis in the Performance
Shares equal to their fair market value at the time income is recognized.  If
the Performance Shares subject to such election are forfeited, the recipient
will not be entitled to any deduction, refund or loss for tax purposes with
respect to the forfeited Performance Shares.  Upon sale of the shares after the
forfeiture period has expired, any gain or loss will be short-term, mid-term or
long-term capital gain or loss depending upon the length of his holding period,
which begins when the restriction expires (or upon the earlier issuance of the
Performance Shares, if the recipient elected immediate recognition of income
under Section 83(b)).  The Company must withhold income taxes and in general
will be entitled to a deduction equal to the ordinary income recognized by the
recipient.

     Automatic Grants.  The 1998 Plan provides that each nonemployee director,
on the date he or she is initially elected or appointed and on the first
business day following the Annual Meeting of Stockholders of each subsequent

                                                                              13
<PAGE>
 
year thereafter in which the nonemployee director is still serving as a
director, will automatically be granted a stock option to purchase 2,250 shares
of Common Stock with an Exercise Price equal to the fair market value on the
date of such grant, and shall automatically be granted, in lieu of a cash fee
for serving as a director of the Company, 3,375 performance shares, which vest
immediately.  To the extent similar automatic grants have been provided for
under any other stock incentive plan, duplicate grants will not be made.

     Amendment.  The Committee is permitted to amend the 1998 Plan in response
to changes in securities or other laws or to comply with stock exchange rules or
requirements.  The 1998 Plan may be terminated, modified or amended by the
Committee, but without stockholder approval, the Committee may not increase the
number of shares of Common Stock which may be issued under the Plan or to any
individual (except for changes in capital structure) or change the employees or
class of employees eligible to participate in the 1998 Plan.  No termination,
modification or amendment shall adversely affect any outstanding grants without
the holder's consent.

     Changes in Capital Structure.  The 1998 Plan provides that the Committee
may make proportionate adjustments upwards or downwards upon an increase or
decrease, respectively, in the number of shares of Common Stock outstanding as a
result of certain recapitalization or similar events.  Upon the merger or
consolidation of the Company in which the Company is the survivor, each holder
of an option will be entitled to receive upon exercise the number and class of
securities to which the holder would have been entitled pursuant to the merger
or consolidation agreement if, immediately prior to such event, such holder had
been the holder of record of the number of shares of Common Stock as to which
such option was exercisable.

     In the event of a merger or consolidation in which the Company is not the
surviving corporation, or in the event of a sale or other disposition of all of
the Company's assets to another entity, the Committee may elect any of the
following:  (i) that if the successor entity is willing to assume the obligation
to deliver shares of stock after the effective date of the merger, consolidation
or sale of assets, each holder of an option shall be entitled to receive, upon
the exercise of such option, such shares of stock or other securities as the
holder of such option would have been entitled to receive had such option been
exercised immediately prior to the consummation of such merger, consolidation or
sale of assets; (ii) to waive any limitations set forth in or imposed pursuant
to the 1998 Plan or any award agreement with respect to any option or
Performance Share such that (A) such option shall become exercisable prior to
the record or effective date of such merger, consolidation or sale of assets or
(B) the vesting of such Performance Shares shall occur upon such merger,
consolidation or sale of assets; or (iii) to cancel all outstanding options as
of the effective date of any such merger, consolidation or sale of assets
provided that prior notice of such cancellation shall be given to each holder of
an option at least 30 days prior to the effective date of such merger,
consolidation or sale of assets, and each holder of an option shall have the
right to exercise such option in full prior to the effective date of such
merger, consolidation or sale of assets.

BOARD RECOMMENDATION

     The Board of Directors believes that it would be in the Company's best
interest to adopt the 1998 Plan in order to provide incentives to directors,
officers and employees of the Company to contribute to the Company's future
success and prosperity, to provide management of the Company with a proprietary
ownership interest in the Company, to maintain competitive compensation levels,
to attract and retain competent and talented employees and directors and to
provide incentives to management of the Company for continuous employment.  The
Company has historically used stock options and performance share grants as a
means to provide part of the compensation and incentives to its management.  The
vesting of all performance share grants and the vesting of all option grants
that have been made pursuant to the 1997 Plan have been tied to the performance
of the Company's Common Stock. The Company generally makes new grants only if
management meets its performance targets and exercises its option and
performance share grants.  The 1998 Plan is designed to limit the maximum number
of nonqualified options, ISOs, and performance shares which may be granted and
are outstanding at any one time to 6% of the total number of shares of Common
Stock that the Company has issued and are outstanding.

     For example, as of March 31, 1998, there were 39,148,843 shares of Common
Stock issued and outstanding, and thus, under the terms of the 1998 Plan, no
more than 2,348,930 shares could be granted and outstanding under all of the
Company's stock incentive plans.  As of March 31, 1998, there were a total of

14
<PAGE>
 
1,672,044 options outstanding under the 1991, 1994 and 1997 Plans.  Therefore,
only 676,886 additional options or performance shares could have been granted
under the 1998 Plan as of that date.  Unless the performance targets are met and
management exercises its option and performance share grants (or the number of
issued and outstanding shares increases), no additional shares can be granted.
This provides incentives to management to meet the performance targets and
subsequently exercise its option and performance share grants so that new grants
with higher performance targets can be made.

     The affirmative vote of the holders of a majority of the votes of shares of
Common Stock and Preferred Stock represented and entitled to vote at the Annual
Meeting is required to ratify the adoption of the 1998 Plan.
 
     THE BOARD OF DIRECTORS RECOMMENDS THAT THE STOCKHOLDERS VOTE FOR THE
PROPOSAL TO RATIFY THE ADOPTION OF THE CROSS TIMBERS OIL COMPANY 1998 STOCK
INCENTIVE PLAN.


ITEM 3.  APPROVAL OF THE 1998 ROYALTY TRUST OPTION PLAN

     On April 13, 1998, the Compensation Committee (the "Committee") of the
Board of Directors adopted the Cross Timbers Oil Company 1998 Royalty Trust
Option Plan (the "Option Plan"), subject to stockholder approval at the 1998
Annual Meeting.  The Option Plan provides for the granting of options to
purchase units of beneficial interest ("Units") in the Cross Timbers Royalty
Trust (the "CT Royalty Trust") or in one or more royalty trusts (the "Royalty
Trust") that may be established by the Company.  The CT Royalty Trust holds, and
the Royalty Trust may hold, net overriding royalty interests (equivalent to net
profits interests) carved out of certain oil and gas properties that are
currently owned by the Company.  As of March 31, 1998, the Company owned
1,360,000 Units of the CT Royalty Trust, all or a portion of which may be
subject to options in the Option Plan.  At the time of establishing the Royalty
Trust, royalty interests will be transferred to the Royalty Trust by the Company
in exchange for all of the Units in the Royalty Trust.  Under the Option Plan,
the Company may grant options to purchase Units in an aggregate amount that may
not exceed $12,000,000 in fair market value on the dates of grant.  The
following general description of the material features of the Option Plan is
qualified in its entirety by reference to the Option Plan, which is set forth in
Exhibit B to this Proxy Statement.

     Purpose.  The purpose of the Option Plan is to advance the interests of the
Company by providing management the option to acquire at fair market value
income yielding interests (the Units) in properties in which the Company shares
economic interests.  By sharing with the Company the economic benefits of
certain properties that are managed by the Company, key employees are provided
additional incentives in the success of the Company. Further, since the Option
Plan will allow participants in the Option Plan to pay for the exercise of their
options by tendering Common Stock of the Company (see discussion below), it will
provide greater liquidity to the participants so that they will not have to sell
the Common Stock that they own.

     Administration.  The Option Plan will be administered by the Committee,
which has the discretion to select the persons to receive options, the number of
Units covered by each option, the term, exercise price and all other terms and
conditions of each option.  It is anticipated that approximately 25 employees
will be eligible to receive options.

     Options.  The term of an option will be established by the Committee, but
in no event will the term be longer than three years.  The Committee will
determine at which time or times each option may be exercised.  The exercise
price of each option will be not less than 100% of the fair market value of a
Unit on the date the option is granted, and will be payable in cash or, unless
the Committee determines otherwise, in shares of Common Stock of the Company
previously owned by the optionee.  The aggregate maximum value of options that
can be granted to any one individual shall be $2,000,000, valued at the fair
market value on the date of grant.  Unless otherwise determined by the
Committee, the optionee may also satisfy any tax withholding obligations
resulting from the exercise of an option by delivery to the Company of
previously owned shares of Common Stock.

     In the event of termination of employment by reason of death, an option may
thereafter be exercised by the optionee's estate, or by such person who acquires
the right to exercise such option by inheritance, bequest or by

                                                                              15
<PAGE>
 
reason of such optionee's death (to the extent it was then exercisable) for one
year after such death. In the event of termination of employment by reason of
permanent disability, an option may thereafter be exercised (to the extent it
was then exercisable) within one year after such termination. In the event of
termination of employment by reason of retirement, an option may thereafter be
exercised (to the extent it was then exercisable) within three months
thereafter. In the event of termination of employment by reason other than
death, disability or retirement, options may be exercised within 30 days after
termination, unless termination is for cause, and then the options terminate
immediately.

     Adjustments.  In the event of any recapitalization or similar change of the
CT Royalty Trust or the Royalty Trust, the number of Units remaining subject to
the Option Plan, the number of Units subject to any outstanding options and the
exercise price and any other relevant provisions of outstanding options will be
appropriately adjusted by the Committee.

     Amendment; Termination.  The Board of Directors may at any time suspend or
terminate the Option Plan or amend it in any respect, except that without
shareholder approval, no amendment may increase the maximum number of Units
subject to the Option Plan.

     Sale/Repurchase Rights for Units.  If a termination of employment of an
optionee should occur prior to the time the Units are publicly traded, the
Company will have the right to purchase from the employee all Units acquired by
exercise of options at a purchase price equal to the fair market value of the
Units at the time of termination.  The employee will have a corresponding right
to sell to the Company all Units acquired upon exercise of option.


BOARD RECOMMENDATION

     The Board of Directors believes it to be in the Company's best interests to
adopt the Option Plan in order to provide liquidity to the participants without
requiring sale of their Common Stock.  The options will be granted at the fair
market value of the Units on the date of grant.  The Company and the
participants will share in the enhanced value and income produced from the
properties underlying the Units.

     Adoption of the Option Plan requires the affirmative vote of holders of a
majority of the shares of Common Stock and Preferred Stock present or
represented by proxy and entitled to vote at the Annual Meeting.

     THE BOARD OF DIRECTORS RECOMMENDS THAT STOCKHOLDERS VOTE FOR THE PROPOSAL
TO ADOPT THE CROSS TIMBERS OIL COMPANY 1998 ROYALTY TRUST OPTION PLAN.

16
<PAGE>
 
OTHER MATTERS


INDEPENDENT AUDITORS

     The Company retains Arthur Andersen LLP as its principal independent public
accountants, as selected by the Board of Directors.  Representatives of Arthur
Andersen LLP will be present at the Annual Meeting to respond to appropriate
questions from stockholders and to make a statement at the meeting should they
desire to do so.


OTHER BUSINESS

     The Board does not know of any business to be presented for consideration
at the Annual Meeting other than those matters described in this Proxy
Statement.  If any other matters should properly come before the meeting,
however, it is intended that the persons named in the accompanying proxy will
vote thereon in accordance with their best judgment.


SUBMISSION OF STOCKHOLDER PROPOSALS FOR THE 1999 ANNUAL MEETING OF STOCKHOLDERS

     Proposals of stockholders intended to be presented at the Company's 1999
Annual Meeting of Stockholders must be received at the Company's principal
executive offices in Fort Worth, Texas, on or before December 18, 1998, to be
considered for inclusion in the Company's proxy statement and accompanying proxy
for that meeting.


ANNUAL REPORT AND FORM 10-K

     The Company's 1997 Annual Report, including audited financial statements,
accompanies this Proxy Statement.  A copy of the Company's Annual Report on Form
10-K for the year ended December 31, 1997, as filed with the Securities and
Exchange Commission, will be furnished without charge to stockholders upon
written request to: Investor Relations, Cross Timbers Oil Company, 810 Houston
Street, Suite 2000, Fort Worth, Texas 76102.


                         By Order of the Board of Directors,



                         Virginia Anderson
                         Secretary


Fort Worth, Texas
April 17, 1998

                                                                              17
<PAGE>
 
                                                                       EXHIBIT A

================================================================================




 



                           CROSS TIMBERS OIL COMPANY








                           1998 STOCK INCENTIVE PLAN








                                 APRIL 13, 1998







================================================================================
<PAGE>
 
                           CROSS TIMBERS OIL COMPANY

                           1998 STOCK INCENTIVE PLAN


                               ARTICLE 1. GENERAL

     Section 1.1 Purpose.  The purposes of this 1998 Stock Incentive Plan (the
"Plan") are to: (1) associate the interests of the management of CROSS TIMBERS
OIL COMPANY and its subsidiaries and affiliates (collectively referred to as the
"Company") closely with the stockholders to generate an increased incentive to
contribute to the Company's future success and prosperity, thus enhancing the
value of the Company for the benefit of its stockholders; (2) provide management
with a proprietary ownership interest in the Company commensurate with Company
performance, as reflected in increased stockholder value; (3) maintain
competitive compensation levels thereby attracting and retaining highly
competent and talented directors and employees; and (4) provide an incentive to
management for continuous employment with the Company. Certain capitalized terms
are defined in Section 6.7.

     Section 1.2.  Administration.

          (a) The Plan shall be administered by the Compensation Committee of
     the Board of Directors of the Company (the "Committee"), as constituted
     from time to time, consisting of two or more members who shall each be an
     Outside Director appointed by the Board of Directors.

          (b) The Committee shall have the authority in its sole discretion and
     from  time to time to:

              (i) designate the executive employees (as defined in Section 1.3)
     of the Company eligible to participate in the Plan;

              (ii) grant Awards provided in the Plan in such form and amount as
          the Committee shall determine;

              (iii)  impose such limitations, restrictions and conditions, not
          inconsistent with this Plan, upon any such Award as the Committee
          shall deem appropriate; and

              (iv) interpret the Plan and any agreement, instrument or other
          document executed in connection with the Plan, adopt, amend and
          rescind rules and regulations relating to the Plan, and make all other
          determinations and take all other action necessary or advisable for
          the implementation and administration of the Plan.

          (c) Decisions and determinations of the Committee on all matters
     relating to the Plan shall be in its sole discretion and shall be final,
     conclusive and binding upon all persons, including the Company, any
     participant, any stockholder of the Company and any employee. A majority of
     the members of the Committee may determine its actions and fix the time and
     place of its meetings.  No member of the Committee shall be liable for any
     action taken or decision made in good faith relating to the Plan or any
     Award thereunder.

     Section 1.3.  Eligibility for Participation.   Participants in the Plan
shall be selected by the Committee from the executive employees of the Company
or its Subsidiaries. For the purposes of this Plan, (i) the term "executive
employee" shall include only employees who are officers, or who are determined
by the Committee, in its discretion, to be key professional, managerial,
administrative, or technical employees or supervisors, and (ii) the term
"Subsidiary" means any corporation or other entity of which at least 50% of the

                                       1
<PAGE>
 
voting securities are owned by the Company directly or through one or more other
corporations, each of which is also a Subsidiary.  With respect to non-corporate
entities, Subsidiary shall mean an entity managed or controlled by the Company
or any Subsidiary and with respect to which the Company or any Subsidiary is
allocated more than half of the profits and losses thereof.

     Section 1.4.  Types of Awards Under the Plan.  Awards under the Plan may be
in the form of any one or more of the following:

          (i)    Stock Options, as described in Article II;

          (ii)   Incentive Stock Options, as described in Article III; and/or

          (iii)  Performance Shares, as described in Article IV.

Awards under the Plan shall be evidenced by an Award Agreement between the
Company and the recipient of the Award, in form and substance satisfactory to
the Committee, and not inconsistent with this Plan.  Award Agreements may
provide such vesting schedules for Stock Options and Incentive Stock Options,
performance targets for Performance Shares, and such other terms, conditions and
provisions as are not inconsistent with the terms of this Plan.  Subject to the
express provisions of the Plan, and within the limitations of the Plan, the
Committee may modify, extend or renew outstanding Award Agreements, or accept
the surrender of outstanding Awards and authorize the granting of new Awards in
substitution therefor.  However, except as provided in this Plan, no
modification of an Award shall impair the rights of the holder thereof without
his consent.

     Section 1.5.  Aggregate Limitation on Awards.

          (a) The maximum number of shares of Common Stock which may be issued
     pursuant to Awards issued under the Plan shall be 6,000,000, of which
     3,000,000 may be issued as Performance Shares.  In the aggregate with any
     other stock incentive plan of the Company, the Company may not grant
     Options or Performance Shares such that the total number of shares of
     Common Stock subject to outstanding Options and unvested Performance Shares
     exceeds 6% of the total number of shares of Common Stock that the Company
     has issued and are outstanding at the time any grants are made.  In
     addition, the maximum number of shares that may be issued to any individual
     hereunder pursuant to Options or Performance Shares issued hereunder during
     any one year shall be 600,000 and 300,000, respectively, and the maximum
     number that may be issued to any individual pursuant to Options or
     Performance Shares issued hereunder during the life of the Plan shall be
     1,200,000 and 600,000, respectively.

          (b) For purposes of calculating the maximum number of shares of Common
     Stock which may be issued under the Plan in total or to any individual:

              (i) only the net shares issued (e.g., excluding shares delivered
          or withheld for payment of an Option exercise or for tax withholding
          requirements) under the Plan shall be counted when issued upon
          exercise of a Stock Option or Incentive Stock Option or vesting of
          Performance Shares; and

              (ii) only the net shares issued as Performance Shares shall be
          counted as issued (shares reacquired by the Company because of failure
          to achieve a performance target or failure to become fully vested for
          any other reason shall again be available for issuance under the
          Plan).

                                       2
<PAGE>
 
              (iii)  any shares of Common Stock subject to a Stock Option or
          Incentive Stock Option which for any reason is terminated, unexercised
          or expires shall again be available for issuance under the Plan.

     Section 1.6.  Effective Date and Term of Plan.

          (a) The Plan shall become effective on the date adopted by the Board
     of Directors, subject to approval by the holders of a majority of the votes
     of shares of Common Stock and Preferred Stock present in person or
     represented by proxy and entitled to vote at the Annual Meeting of
     stockholders of the Company held in 1998.

          (b) No Awards shall be made under the Plan after the tenth anniversary
     of the effective date of this Plan; provided, however, that the Plan and
     all Awards made under the Plan prior to such date shall remain in effect
     until such Awards have been satisfied or terminated in accordance with the
     Plan and the terms of such Awards.

     Section 1.7.  Transferability.  The Committee may, in its discretion,
authorize all or a portion of the Stock Options to be granted under Article II
or the Performance Shares to be granted under Article IV to be on terms which
permit transfer by the recipient of such a grant to (i) the spouse, children or
grandchildren of the recipient ("Immediate Family Members"), (ii) a trust or
trusts for the exclusive benefit of such Immediate Family Members, or (iii) a
partnership in which (a) the recipient, (b) such Immediate Family Members, (c)
corporations, the only owners of which are such Immediate Family Members or the
recipient, or (d) trusts whose only beneficiaries are such Immediate Family
Members or the recipient, are the only partners, provided that (x) there may be
no consideration for any such transfer, (y) the Award Agreement pursuant to
which such Stock Options or Performance Shares are granted must be approved by
the Committee, and must expressly provide for the transferability in a manner
consistent with this Section, and (z) subsequent transfers of transferred Stock
Options or Performance Shares shall be prohibited except by will or by the law
of descent and distribution.  Following transfer, such Stock Options or
Performance Shares shall continue to be subject to the same terms and conditions
as were applicable immediately prior to transfer, provided that for purposes of
Sections 2.2 and 4.1 hereof, the terms "Optionee" and "participant,"
respectively, shall be deemed to refer to the transferee.  The events of
termination of employment of Sections 2.7 and 4.7 hereof shall continue to be
applied with respect to the original Optionee and participant, respectively,
following which the Stock Options shall be exercisable by the transferee only to
the extent and for the periods specified in Section 2.7, and Performance Shares
shall vest only to the extent provided in the Award Agreement.

                           ARTICLE II. STOCK OPTIONS

     Section 2.1.  Award of Stock Options.  The Committee may from time to time,
and subject to the provisions of the Plan and such other terms and conditions as
the Committee may prescribe,  grant to any participant in the Plan one or more
options to purchase the number of shares of Common Stock ("Stock Options")
allotted by the Committee. The date a Stock Option is granted shall mean the
date selected by the Committee as of which the Committee allots a specific
number of shares to a participant pursuant to the Plan.

     Section 2.2.  Stock Option Agreements.  The grant of a Stock Option shall
be evidenced by a written Award Agreement, executed by the Company and the
Optionee, stating the number of shares of Common Stock subject to the Stock
Option evidenced thereby, and in such form as the Committee may from time to
time determine.

     Section 2.3.  Stock Option Price.  The option price per share of Common
Stock deliverable upon the exercise of a Stock Option shall be not less than
100% of the fair market value of a share of Common Stock on the date the Stock
Option is granted.

                                       3
<PAGE>
 
     Section 2.4.  Term and Exercise.  A Stock Option may be exercised during
the Option Term and may be subject to such vesting schedule as the Committee may
provide in an Award Agreement.  No Stock Option shall be exercisable after the
expiration of its Option Term.

     Section 2.5.  Manner of Payment. Each Award Agreement providing for a Stock
Option shall set forth the procedure governing the exercise of the Stock Option
granted thereunder, and shall provide that, upon such exercise in respect of any
shares of Common Stock subject thereto, the Optionee shall pay to the Company,
in full, the option price for such shares with cash.  Unless otherwise provided
in the Award Agreement, the Optionee may also pay to the Company, in full, the
option price with Common Stock owned by the Optionee on the date of exercise or
Common Stock acquired pursuant to such exercise, valued at the fair market value
of a share of Common Stock on the date the Stock Option is exercised, provided
that the Optionee provides satisfactory evidence, in the opinion of the
Secretary or any Assistant Secretary of the Company, that the Optionee directly
owns on the date of exercise shares of Common Stock sufficient to pay the option
price, and that the Optionee has owned such shares for at least six months.

     Section 2.6.  Delivery of Certificates.  As soon as practicable after
exercise of the Stock Option and receipt of payment, the Company shall deliver
to the Optionee a certificate or certificates for such shares of Common Stock.
The Optionee shall become a stockholder of the Company with respect to Common
Stock represented by share certificates so issued and as such shall be fully
entitled to receive dividends, to vote and to exercise all other rights of a
stockholder.

     Section 2.7.  Death, Retirement and Termination of Employment of Optionee.
Unless otherwise provided in an Award Agreement or otherwise agreed to by the
Committee:

          (a) Upon the death of the Optionee, any Stock Option to the extent
     exercisable  on the date of death may be exercised by the Optionee's
     estate, or by a person who acquires the right to exercise such Stock Option
     by bequest or inheritance or by reason of the death of the Optionee,
     provided that such exercise occurs within both (i) the remaining Option
     Term and (ii) one year after such death. The provisions of this Section
     shall apply notwithstanding that the Optionee's employment may have
     terminated prior to death, but only to the extent of any rights exercisable
     on the date of termination of the Optionee's employment.

          (b) Upon termination of the Optionee's employment by reason of
     retirement or permanent disability (as each is determined by the
     Committee), the Optionee may exercise any Stock Option to the extent
     exercisable on the date of termination of the Optionee's employment,
     provided such option exercise occurs within both (i) the remaining Option
     Term and (ii) one year (in the case of permanent disability) or three
     months (in the case of retirement) after such termination.

          (c) In the event of the termination of the Optionee's employment for
     cause (as determined by the Committee), all Stock Options shall terminate
     immediately upon the termination of the Optionee's employment.

          (d) Upon termination of the Optionee's employment by reason other than
     death, disability or cause (as each is determined by the Committee), the
     Optionee may exercise any Stock Option, to the extent exercisable on the
     date of termination of the Optionee's employment, provided such option
     exercise occurs within both (i) the remaining Option Term and (ii) 30 days
     of the date of termination.

                                       4
<PAGE>
 
                     ARTICLE III.  INCENTIVE STOCK OPTIONS

     Section 3.1.  Award of Incentive Stock Options.  The Committee may, from
time to time and subject to the provisions of the Plan and such other terms and
conditions as the Committee may prescribe, grant to any participant in the Plan
one or more "incentive stock options" (intended to qualify as such under the
provisions of Section 422 of the Code) ("Incentive Stock Options") to purchase
the number of shares of Common Stock allotted by the Committee. The date an
Incentive Stock Option is granted shall mean the date selected by the Committee
as of which the Committee allots a specific number of shares to a participant
pursuant to the Plan.  Notwithstanding the foregoing, Incentive Stock Options
shall not be granted to any owner of 10% or more of the total combined voting
power of all classes of stock of the Company or its subsidiaries, unless the
Incentive Stock Options (i) have an exercise price of 110% of the fair market
value of the Common Stock on the date of grant, and (ii) the Option Term may not
be longer than five years.

     Section 3.2.  Incentive Stock Option Agreements.  The grant of an Incentive
Stock Option shall be evidenced by a written Award Agreement, executed by the
Company and the Optionee, stating the number of shares of Common Stock subject
to the Incentive Stock Option evidenced thereby and in such form as the
Committee may from time to time determine.

     Section 3.3.  Incentive Stock Option Price.  The option price per share of
Common Stock deliverable upon the exercise of an Incentive Stock Option shall be
not less than 100% of the fair market value of a share of Common Stock on the
date the Incentive Stock Option is granted.

     Section 3.4.  Term and Exercise.  Each Incentive Stock Option may be
exercised during the Option Term and may be subject to such vesting scheduling
as the Committee may provide in an Award Agreement. No Incentive Stock Option
shall be exercisable after the expiration of its Option Term.

     Section 3.5.  Maximum Amount of Incentive Stock Option Grant.   The
aggregate fair market value (determined on the date the Incentive Stock Option
is granted) of Common Stock with respect to which Incentive Stock Options first
become exercisable by an Optionee during any calendar year (under all plans of
the Optionee's employer corporation and its parent and subsidiary corporations)
shall not exceed $100,000.

     Section 3.6.  Death of Optionee.

          (a) Upon the death of the Optionee, any Incentive Stock Option to the
     extent exercisable on the date of death may be exercised by the Optionee's
     estate or by a person who acquires the right to exercise such Incentive
     Stock Option by bequest or inheritance or by reason of the death of the
     Optionee, provided that such exercise occurs within both (i) the remaining
     Option Term and (ii) one year after the Optionee's death.

          (b) The provisions of this Section shall apply notwithstanding that
     the Optionee's employment may have terminated prior to death, but only to
     the extent of any Incentive Stock Options exercisable on the date of
     termination of the Optionee's employment.

     Section 3.7.  Retirement or Disability.  Unless otherwise provided in an
Award Agreement or otherwise agreed to by the Committee, upon the termination of
the Optionee's employment by reason of permanent disability or retirement (as
each is determined by the Committee), the Optionee may exercise any Incentive
Stock Option, to the extent exercisable on the date of termination of the
Optionee's employment, provided such option exercise occurs within both (i) the
remaining Option Term and (ii) one year (in the case of permanent disability) or
three months (in the case of retirement) after such termination. Notwithstanding
the terms of an Award Agreement, the tax treatment available pursuant to Section
422 of the Internal Revenue Code of 1986, as amended, upon the exercise of an
Incentive Stock Option shall not be available to an Optionee who exercises any
Incentive Stock Options more than (i) six months after the date of termination

                                       5
<PAGE>
 
of employment due to permanent disability or (ii) three months after the date of
termination of employment due to retirement.

     Section 3.8.  Termination for Other Reasons.  Except as provided in
Sections 3.6 and 3.7  or except as otherwise determined by the Committee in an
Award Agreement, all Incentive Stock Options shall terminate immediately upon
the termination of the Optionee's employment.

     Section 3.9.  Applicability of Stock Options Section.  Sections 2.5, Manner
of Payment, and 2.6, Delivery of Share Certificates, applicable to Stock
Options, shall apply equally to Incentive Stock Options. Said Sections are
incorporated by reference in this Article III, as though fully set forth herein.

                     ARTICLE IV.  PERFORMANCE SHARE AWARDS

     Section 4.1.  Awards Granted by Committee.   Coincident with or following
designation for participation in the Plan, a participant may be granted
Performance Shares.  Certificates representing Performance Shares shall be
issued to the participant effective as of the date of the Award.  A holder of
Performance Shares shall have such voting, dividend and other rights of
stockholders of the Company as shall be provided in the Award Agreement.

     Section 4.2.  Amount of Award.  The Committee shall establish a maximum
amount of a participant's Award, which amount shall be denominated in shares of
Common Stock.

     Section 4.3.  Communication of Award.  Written notice of the maximum amount
of a participant's Award and the Performance Cycle determined by the Committee,
if any, shall be given to a participant as soon as practicable after approval of
the Award by the Committee.  The grant of Performance Shares shall be evidenced
by a written Award Agreement, executed by the Company and the recipient of
Performance Shares, in such form as the Committee may from time to time
determine, providing for the terms of such grant.

     Section 4.4.  Amount of Award Payable.  Performance Shares may be granted
based upon past performance or future performance.  In addition to any other
restrictions the Committee may place on Performance Shares, the Committee may,
in its discretion, provide that Performance Shares shall vest upon the
satisfaction of performance targets to be achieved during an applicable
Performance Cycle.  Failure to satisfy the performance targets may result, in
the Committee's discretion as set forth in an Award Agreement, in the forfeiture
of the Performance Shares by the participant and the return of such shares to
the Company or have any other consequence as determined by the Committee.
Performance targets established by the Committee may relate to corporate, group,
unit or individual performance and may be established in terms of market price
of Common Stock, cash flow or cash flow per share, reserve value or reserve
value per share, net asset value or net asset value per share, earnings, or such
other measures or standards determined by the Committee.  Multiple performance
targets may be used and the components of multiple performance targets may be
given the same or different weight in determining the amount of an Award earned,
and may relate to absolute performance or relative performance measured against
other groups, units, individuals or entities. Certificates representing
Performance Shares shall bear a legend restricting their transfer and requiring
the forfeiture of the shares to the Company if any performance targets or other
conditions to vesting are not met. The Committee may also require a participant
to deliver certificates representing unvested Performance Shares to the Company
in escrow until the Performance Shares vest.  Notwithstanding the discretion
allocated to the Committee under this Section 4.4, any award of Performance
Shares to the Chief Executive Officer or any other named executive officer, as
listed in the prior year's proxy statement, will comply with the requirements
for qualified performance-based compensation under Section 162(m) of the Code
and the Treasury regulations promulgated thereunder.

     Section 4.5.  Adjustments.  At any time prior to vesting of a Performance
Share, the Committee may adjust previously established performance targets or
other terms and conditions to reflect events such as 

                                       6
<PAGE>
 
changes in laws, regulations or accounting practice, or mergers, acquisitions,
divestitures or any other event determined by the Committee.

     Section 4.6.  Payments of Awards.  Following the conclusion of each
Performance Cycle, the Committee shall determine the extent to which performance
targets have been attained and the satisfaction of any other terms and
conditions with respect to vesting an Award relating to such Performance Cycle.
Subject to the provisions of Section 6.3, to the extent the Committee determines
Performance Shares have vested, the Company shall issue to the participant
certificates representing vested shares free of any legend regarding performance
targets or forfeiture in exchange for such participant's legended certificates.
Upon election of the participant on the date of vesting, and upon approval by
the Committee, the Company may purchase some or all of the participant's vested
Performance Shares at the fair market value on the date the Committee determines
that the Performance Shares have vested.  Within seven business days after
receipt of the participant's election, the Committee will inform the participant
of its decision whether to approve the purchase of such Performance Shares.

     Section 4.7.  Termination of Employment.  Unless the Award Agreement
provides for vesting upon death, disability, retirement or other termination of
employment, upon any such termination of employment of a participant prior to
vesting of Performance Shares, all outstanding and unvested  Awards of
Performance Shares to such participant shall be canceled, shall not vest and
shall be returned to the Company.

                         ARTICLE V.  AUTOMATIC GRANTS

     Section 5.1.  Grant.  Each director who is not an employee of the Company,
its subsidiaries, affiliates and managers ("Non-Employee Director") shall be
granted, on the date on which he or she is initially elected or appointed a
director of the Company, a Stock Option to purchase 2,250 shares of Common Stock
for the fair market price on the date of such grant, for an Option Term of ten
years.  Thereafter, on the first business day following the Annual Meeting of
Stockholders of each subsequent year in which the Non-Employee Director is still
serving as a director (whether or not such Non-Employee Director's term has been
continuous), he or she shall automatically be granted a Stock Option to purchase
an additional 2,250 shares of Common Stock for the fair market price on the date
of such grant for an Option Term of ten years, and shall automatically be
granted, in lieu of a cash fee for serving as a director of the Company, 3,375
Performance Shares, which shall vest immediately.

     Section 5.2.  Applicable Provisions.   The provisions of Section 2.7(a)
relating to the death of an Optionee shall apply to options granted to Non-
Employee Directors under Section 5.1, and the Committee may not agree to the
contrary in an Award Agreement or otherwise.  The provisions of  Subsections
2.7(b), (c) and (d) relating to disability and other termination of employment
shall not apply to options granted under Section 5.1.

     Section 5.3.  Continuation as Director.  In the event a Non-Employee
Director stands for re-election as a director of the Company but fails to be
re-elected, such failure shall not affect the Stock Options granted under this
Article V. In all other events where a Non-Employee Director does not continue
as a director of the Company (except for death), the Non-Employee Director may
thereafter exercise only those Stock Options that were exercisable upon the date
that he or she ceased to be a director and only during the period occurring
within two years after such date (but not after the expiration of the Option
Term).

     Section 5.4.  Affect of Prior Plan.  Prior stock incentive plans of the
Company have provided for similar automatic grants to the Non-Employee
Directors, but it is the intent of the Company that duplicate automatic grants
shall not be made.

                                       7
<PAGE>
 
                          ARTICLE VI.  MISCELLANEOUS

     Section 6.1.  General Restriction.  Each Award under the Plan shall be
subject to the requirement that, if at any time the Committee shall determine
that (i) the listing, registration or qualification of the shares of Common
Stock subject or related thereto upon any securities exchange or under any state
or Federal law, or (ii) the consent or approval of any government regulatory
body, or (iii) an agreement by the grantee of an Award with respect to the
disposition of shares of Common Stock, is necessary or desirable as a condition
of, or in connection with the granting of such Award or the issue or purchase of
shares of Common Stock thereunder, such Award may not be consummated in whole or
in part unless such listing, registration, qualification, consent, approval or
agreement shall have been effected or obtained free of any conditions not
acceptable to the Committee.

     Section 6.2.  Non-Assignability.   Except as permitted by Section 2.8
hereof, no Award under the Plan shall be assignable or transferable by the
recipient thereof, except by will or by the laws of descent and distribution,
and during the life of the recipient, such Award shall be exercisable only by
such person or by such person's guardian or legal representative.

     Section 6.3.  Withholding Taxes.  Whenever the Company proposes or is
required to issue or transfer shares of Common Stock under the Plan, the Company
shall have the right to require the grantee to remit to the Company in cash
amounts sufficient to satisfy any federal, state and/or local withholding tax
requirements prior to the delivery of any certificates for such shares.
Alternatively,  the Company may allow the participant to submit shares of Common
Stock to satisfy the withholding requirement or may issue, transfer or vest only
such number of shares of Common Stock net of the number of shares sufficient to
satisfy the withholding tax requirements. For withholding tax purposes, the
shares of Common Stock shall be valued on the date the withholding obligation is
incurred.

     Section 6.4.  Right to Terminate Employment.  Nothing in the Plan or in any
Agreement entered into pursuant to the Plan shall confer upon any participant
the right to continue in the employment of the Company or affect any right which
the Company may have to terminate the employment of such participant.

     Section 6.5.  Non-Uniform Determinations. The Committee's determinations
under the Plan (including, without limitation, determinations of the persons to
receive Awards, the form, amount and timing of such Awards, the terms and
provisions of such Awards and the agreements evidencing same) need not be
uniform and may be made by it selectively among persons who receive, or are
eligible to receive, Awards under the Plan, whether or not such persons are
similarly situated.

     Section 6.6.  Rights as a Stockholder.  The recipient of any Award under
the Plan shall have no rights as a stockholder with respect thereto unless and
until certificates for shares of Common Stock are issued to him (except as to
Performance Shares as provided under Section 4.1).

     Section 6.7.  Definitions.  In this Plan the following definitions shall
apply:

          (a) "Award" shall mean a grant of Stock Options, Incentive Stock
     Options or Performance Shares under the Plan.

          (b) "Code" shall mean the Internal Revenue Code of 1986, as amended.

          (c) "Common Stock" shall mean shares of stock which may be issued
     under the Plan that are authorized and unissued or treasury shares of
     common stock, par value of one cent, of the Company.

                                       8
<PAGE>
 
          (d) "Fair market value" as of any date and in respect of any share of
     Common Stock means the average of the high and low sales price on such date
     or on the next business day, if such day is not a business day, or if no
     trading occurred on such day, then on the first day preceding such day on
     which trading occurred, of a share of Common Stock traded on the New York
     Stock Exchange or any other public securities market selected by the
     Committee, provided that, if shares of Common Stock shall not have been
     traded on the New York Stock Exchange or other public securities market for
     more than 10 days immediately preceding such date or if deemed appropriate
     by the Committee for any other reason, the fair market value of shares of
     Common Stock shall be as determined by the Committee in such other manner
     as it may deem appropriate.  In no event shall the fair market value of any
     share of Common Stock be less than its par value.

          (e) "Option" means a Stock Option or Incentive Stock Option.

          (f) "Optionee" shall mean the holder of a Stock Option or an Incentive
     Stock Option.

          (g) "Option price" means the purchase price per share of Common Stock
     deliverable upon the exercise of a Stock Option or Incentive Stock Option.

          (h) "Option Term" shall mean a period of ten years from the date of
     grant thereof in which an Option may be exercised, unless a shorter period
     is provided by the Committee or by another Section of this Plan.

          (i) "Outside Director" means a director of the Company who (i) is not
     a current employee of the Company; (ii) is not a former employee of the
     Company who receives compensation from the Company for prior services
     (other than benefits under a tax-qualified retirement plan); (iii) has not
     been an officer of the Company; (iv) does not receive remuneration from the
     Company, either directly or indirectly, in any capacity other than as a
     director; and (v) does not possess an interest in a transaction, or is
     engaged in a business relationship, that would require disclosure under
     Item 404(a) or (b) of Regulation S-K promulgated by the Securities and
     Exchange Commission.

          (j) "Performance Cycle" means the period of time, if any, as specified
     by the Committee over which Performance Shares are vested.

     Section 6.8.  Leaves of Absence.  The Committee shall be entitled to make
such rules, regulations and determinations as it deems appropriate under the
Plan in respect of any leave of absence taken by the recipient of any Award.
Without limiting the generality of the foregoing, the Committee shall be
entitled to determine (i) whether or not any such leave of absence shall
constitute a termination of employment within the meaning of the Plan and (ii)
the impact, if any, of any such leave of absence on Awards under the Plan
theretofore made to any recipient who takes such leave of absence.

     Section 6.9.  Newly Eligible Employees.  The Committee shall be entitled to
make such rules, regulations, determinations and Awards as it deems appropriate
in respect of any employee who becomes eligible to participate in the Plan or
any portion thereof after the commencement of an Award or incentive period.

     Section 6.10.  Adjustments.

          (a) In the event of any change in the outstanding Common Stock by
     reason of a stock dividend or distribution, recapitalization, merger,
     consolidation, split-up, combination, exchange of shares or the like, the
     Committee may appropriately adjust the number of shares of Common Stock
     which may be issued under the Plan as Options or Performance Shares and the
     limitations on the maximum number that may be issued to any individual
     during any one year or the life of the Plan, the 

                                       9
<PAGE>
 
     number of shares of Common Stock subject to Options or Performance Shares
     theretofore granted under the Plan, and any and all other matters deemed
     appropriate by the Committee.

          (b) In the event of a subdivision or consolidation of shares or other
     increase or reduction in the number of shares of the Common Stock
     outstanding without receiving compensation therefor in money, services or
     property, then (a) in the event of an increase in the number of such shares
     outstanding, the number of shares of Common Stock purchasable pursuant to a
     Stock Option granted automatically pursuant to Section 5.1 after the date
     of increase, and the number of Performance Shares granted automatically
     pursuant to Section 5.1 after the date of such increase, shall be
     proportionately increased; and (b) in the event of a decrease in the number
     of such shares outstanding, the number of shares of Common Stock
     purchasable pursuant to a Stock Option granted automatically pursuant to
     Section 5.1 after the date of decrease, and the number of Performance
     Shares granted automatically pursuant to Section 5.1 after the date of such
     decrease, shall be proportionately decreased.

          (c) Any such adjustment in outstanding Options will be made with a
     corresponding adjustment in the exercise price per share so that the total
     exercise price applicable to such Options will not change.

     Section 6.11.  Changes in the Company's Capital Structure.

          (a) The existence of outstanding Options or Performance Shares shall
     not affect in any way the right or power of the Company or its stockholders
     to make or authorize any or all adjustments, recapitalization,
     reorganizations or other changes in the Company's capital structure or its
     business, or any merger or consolidation of the Company or any issue of
     bonds, debentures, preferred or prior preference stock ahead of or
     affecting the Common Stock or the rights thereof, or the dissolution or
     liquidation of the Company, or any sale or transfer of all or any part of
     its assets or business, or any other corporate act or proceeding, whether
     of a similar character or otherwise.

          (b) After a merger of one or more corporations into the Company, or
     after a consolidation of the Company and one or more corporations in which
     the Company shall be the surviving corporation, (i) each holder of an
     outstanding Option shall, at no additional cost, be entitled upon exercise
     of such Option to receive (subject to any required action by stockholders)
     in lieu of the number of shares as to which such Option shall then be so
     exercisable, the number and class of shares of stock, other securities or
     consideration to which such holder would have been entitled to receive
     pursuant to the terms of the agreement of merger or consolidation if,
     immediately prior to such merger or consolidation, such holder had been the
     holder of record of a number of shares of the Company equal to the number
     of shares as to which such Option had been exercisable and (ii) unless
     otherwise provided by the Committee, the number of shares of Common Stock,
     other securities or consideration to be received with respect to unvested
     Performance Shares shall continue to be subject to the Award Agreement,
     including any vesting provisions thereof.

          (c) If the Company is about to be merged into or consolidated with
     another corporation or other entity under circumstances where the Company
     is not the surviving corporation, or if the Company is about to sell or
     otherwise dispose of substantially all of its assets to another corporation
     or other entity while unvested Performance Shares or unexercised Options
     remain outstanding, the Committee may direct that any of the following
     shall occur:

              (i) If the successor entity shall agree to assume the obligation
          to deliver shares of stock or other securities after the effective
          date of the merger, consolidation or sale of assets, as the case may
          be, each holder of an outstanding Option shall be entitled to receive,
          upon the exercise of such Option and payment of the option price, in
          lieu of shares of 

                                       10
<PAGE>
 
          Common Stock, such shares of stock or other securities as the holder
          of such option would have been entitled to receive had such Option
          been exercised immediately prior to the consummation of such merger,
          consolidation or sale, and the terms of such Option shall apply as
          nearly as practicable to the shares of stock or other securities
          purchasable upon exercise of the Option following such merger,
          consolidation or sale of assets;

              (ii) The Committee may waive any limitations set forth in this
          Plan or any Award Agreement with respect to such Option or Performance
          Share such that (A) such Option shall become exercisable prior to the
          record or effective date of such merger, consolidation or sale of
          assets or (B) the vesting of such Performance Share shall occur upon
          such merger, consolidation or sale of asset; and/or

              (iii)  The Committee may cancel all outstanding Options as of the
          effective date of any such merger, consolidation or sale of assets,
          provided that prior notice of such cancellation shall be given to each
          holder of an Option at least 30 days prior to the effective date of
          such merger, consolidation or sale of assets, and each holder of an
          Option shall have the right to exercise such Option, to the extent
          exercisable, during a period of not less than 30 days prior to the
          effective date of such merger, consolidation or sale of assets.

          (d) Except as herein provided, the issuance by the Company of Common
     Stock or any other shares of capital stock or securities convertible into
     shares of capital stock, for cash, property, services performed or other
     consideration, shall not adversely affect, and no adjustment by reason
     thereof shall be made with respect to, the number or price of shares of
     Common Stock then subject to outstanding Options.

     Section 6.12.  Amendment of the Plan.

          (a) The Committee may, without further action by the stockholders and
     without receiving further consideration from the participants, amend this
     Plan or condition or modify Awards under this Plan in response to changes
     in securities or other laws or rules, regulations or regulatory
     interpretations thereof applicable to this Plan or to comply with stock
     exchange rules or requirements.

          (b) The Committee may at any time and from time to time terminate or
     modify or amend the Plan in any respect, except that without stockholder
     approval the committee may not (i) increase the maximum number of shares of
     Common Stock which may be issued under the Plan or to any individual (other
     than increases pursuant to Sections 6.10 and 6.11), or (ii) change the
     employees or class of employees eligible to participate in the Plan.  The
     termination or any modification or amendment of the Plan, except as
     provided in subsection (a), shall not, without the consent of a
     participant, adversely affect his or her rights under an Award previously
     granted to him or her.

                                       11
<PAGE>
 
                                                                       EXHIBIT B

================================================================================







 

                           CROSS TIMBERS OIL COMPANY







                         1998 ROYALTY TRUST OPTION PLAN







                                 APRIL 13, 1998








================================================================================
<PAGE>
 
                           CROSS TIMBERS OIL COMPANY

                         1998 ROYALTY TRUST OPTION PLAN


     1.  Purpose.  The purposes of this 1998 Royalty Trust Option Plan (the
"Plan") is to advance the interests of Cross Timbers Oil Company (the "Company")
by providing management the option to acquire income yielding interests in
properties in which the Company shares economic interests.  By sharing with the
Company the economic benefits of certain properties that are managed by the
Company, key employees are provided additional incentives in the success of the
Company.  Further, since the Plan will allow participants in the Plan to pay for
the exercise of their options by tendering Common Stock of the Company (as
provided below), it will provide greater liquidity to the participants so that
they will not have to sell the Common Stock of the Company that they own.

     2.  Administration.  The Plan shall be administered by the Compensation
Committee of the Board of Directors of the Company (the "Committee").  Subject
to the provisions of the Plan, the Committee is authorized to determine
participants to whom options will be granted, the times at which options will be
granted, the periods during which they will be exercisable, and the number of
units of the royalty trusts ("Units") subject to options, the exercise price and
other terms and conditions of such options.  The Committee shall have full and
final authority to interpret the Plan and options granted thereunder, to
prescribe, amend and rescind rules and regulations relating to the Plan and the
options, and to make other determinations necessary or advisable for the
administration of the Plan, all of which determinations shall be conclusive and
binding on all persons.  A majority of the Committee shall constitute a quorum,
and the Committee shall act pursuant to a majority vote or by unanimous written
consent.

     3.  Eligibility.  Such key employees of the Company and any of its
subsidiaries as the Committee shall determine from time to time, shall be
eligible to be granted options under the Plan.

     4.  Units Subject to Options.   Company may grant options to purchase Units
in an aggregate amount that may not exceed $12,000,000 in fair market value on
the date of the grant.  If any outstanding option under the Plan is forfeited,
expires or is terminated for any reason, the Units subject to the unexercised
portion of such option shall again be available for issuance pursuant to the
grant of options.  The grant of any option under the Plan shall be evidenced by
a written agreement executed by the Company and the optionee, in such form and
containing such terms and conditions as the Committee may determine, subject to
the provisions and limitations contained in the Plan.

     5.  Transferability of Options.  The Committee may in its discretion
provide in any option agreement that all or a portion of such option may be
transferred by the optionee on such terms and subject to such limitations set
forth in the option agreement.  Unless an option agreement specifically permits
transfer of an option, no option shall be transferable by the optionee otherwise
than by will or the laws of descent and distribution, and each option shall be
exercisable during the lifetime of the optionee only by the optionee or by his
or her guardian or legal representative.

     6.  Allotment of Units; Exercise Price.  The Committee shall determine,
subject to the limitations set forth in paragraph 4, the total number of Units
covered by each option to be granted to each optionee under the Plan.  The
exercise price of each option will be not less than 100% of the fair market
value of a Unit on the date the option is granted.  The aggregate maximum value
of options that can be granted to any one individual shall be $2,000,000, valued
at the fair market value on the date of grant.

     7.  Term of Option.  Each option shall be granted for such term as the
Committee shall determine; provided, that no term of any option shall extend
more than 3 years after the date of grant.

                                       1
<PAGE>
 
     8.  Exercise.   Each option shall be exercisable from and after the date of
grant until such option shall terminate or expire.  No option shall be exercised
for fewer than 100 Units unless the remaining Units purchasable under the option
are fewer than 100 Units.

     9.  Payment for Units.

          (a) Purchase Price.  The purchase price of each Unit purchased upon
     the exercise of any option granted hereunder shall be paid in full at the
     time of such purchase, and a certificate representing such Units shall be
     delivered therefor.  Until the Unit certificate for such Units is issued in
     the optionee's name, such optionee will have no rights of a holder of
     Units, including, but not limited to, the right to receive cash
     distributions.  Payment may be made in whole or in part in cash or, unless
     the Committee shall at any time determine otherwise, in common stock of the
     Company ("Common Stock") previously owned by the optionee, valued at Fair
     Market Value of such Common Stock on the day preceding the date of
     exercise.  "Fair Market Value" of the Units or of Common Stock as of any
     date shall be the average of the high and low sales price on such date (or
     if no trades occurred on such date on the next preceding day on which
     trading occurred) of a Unit or share of Common Stock traded on the New York
     Stock Exchange or any other public securities market selected by the
     Committee, provided that, if Units or shares of Common Stock shall not have
     been traded on the New York Stock Exchange or other public securities
     market for more than 10 days immediately preceding such date, or if the
     Units are not publicly traded, or if deemed appropriate by the Committee
     for any other reason, the fair market value of Units or shares of Common
     Stock shall be as determined by the Committee in such other manner as it
     may deem appropriate.

          (b) Tax Withholding.  It shall be a condition to the performance of
     the Company's obligation to sell or transfer Units upon exercise of an
     option that the optionee pay, or make provision satisfactory to the Company
     for the payment of, any taxes which the Company is obligated to collect
     with respect to the issuance or transfer of such shares.  Unless otherwise
     determined by the Committee at any time, the optionee may satisfy federal
     or state tax withholding obligations by delivery of previously owned shares
     of Common Stock, the Fair Market Value of which does not exceed the amount
     required to cover the federal or state tax obligation (including FICA)
     incurred in connection with the exercise of such option.

     10.  Termination of Options.

          (a) Death.  In the event of the death of the optionee, any option to
     the extent exercisable on the date of death may be exercised by the
     optionee's estate, or by a person who acquires the right to exercise such
     option by bequest or inheritance or by reason of the death of the optionee,
     provided that such exercise occurs within both (i) the remaining term of
     the option and (ii) one year. The provisions of this Section 10(a) shall
     apply notwithstanding that the optionee's employment may have terminated
     prior to death, but only to the extent of any rights exercisable on the
     date of termination of the Optionee's employment.

          (b) Retirement or Permanent Disability.  In the event of the
     termination of the optionee's employment by reason of retirement or
     permanent disability (as each is determined by the Committee), the optionee
     may exercise any option, to the extent exercisable on the date of
     termination of the optionee's employment, provided such option exercise
     occurs within both (i) the remaining term of the option and (ii) one year
     (in the case of permanent disability) or three months (in the case of
     retirement).

          (c) Cause.  In the event of the termination of the optionee's
     employment for cause (as determined by the Committee), the option shall
     terminate immediately upon the termination of the optionee's employment.

                                       2
<PAGE>
 
          (d) Other Termination.  In the event of the termination of the
     optionee's employment by reason other than death, disability or cause (as
     each is determined by the Committee), the optionee may exercise any option,
     to the extent exercisable on the date of termination of the optionee's
     employment, provided such option exercise occurs within both (i) the
     remaining term of the option and (ii) 30 days of the date of termination.

     11.  Restrictions on Transfer of Units.  Except at such time as the Units
are publicly traded, no optionee shall sell, assign, pledge, encumber or
otherwise transfer, except to the Company, any Unit purchased upon exercise of
an option.  Until such time as the issuance of options is covered by a then
effective registration statement under the Securities Act of 1933, as amended,
each option agreement shall provide that as a condition to the Company's
obligation to sell Units upon exercise of an option, the optionee shall
represent in writing that the Units are being acquired for investment only and
not for resale or with a view to distribution.  Each option agreement may
include such other terms and conditions as the Committee, in its discretion, may
deem advisable with respect to compliance with federal and state securities
laws.

     12.  Sale/Repurchase Rights.  If at any time prior to the public offering
of the Units an optionee ceases to be employed by the Company or any subsidiary
for any reason whatsoever, the Company shall have a right to repurchase from the
optionee, and the optionee shall have a right to sell to the Company (subject to
any contractual or legal limitation then imposed on the Company), for cash
during a period of 90 days following the date of such termination of employment
(or such longer period set forth in the option agreement) all or any portion of
the Units acquired by the optionee upon exercise of any option at a purchase
price equal to the fair market value of the Units on the date of such
termination of employment.  Each option agreement shall contain such terms and
conditions relating to such sale and repurchase rights as the Committee shall
deem appropriate.

     13.  Adjustment of Options.  In the event of any dividend, split,
combination of Units, merger, consolidation, recapitalization, reclassification
or other similar capital or structure change of the royalty trusts, the number
of Units at the time of such change remaining subject to the Plan, the number of
Units subject to any outstanding options and the exercise price thereof and any
other relevant provisions of such options shall be appropriately adjusted to
reflect such change, and the Committee's determination as to the terms of any
such adjustments shall be binding and conclusive on all persons.

     14.  Effective Date and Term.  The Plan shall become effective on the date
of approval of the Plan by the holders of a majority of the shares of Common
Stock present at a duly held meeting of stockholders of the Company.  The Plan
shall terminate on the fifth anniversary of the effective date of the Plan;
provided that all outstanding options granted under the Plan prior to such
termination date of the Plan shall remain in effect in accordance with the terms
of such options.

     15.  Amendment.  The Board of Directors may at any time suspend or
terminate the Plan or amend it from time to time in any respect, except that
without the appropriate approval of the holders of Common Stock, no such
amendment shall increase the maximum number of Units subject to the Plan.

     16.  Legal Compliance.  The obligation of the Company to sell and deliver
Units pursuant to the exercise of an option is subject to such compliance as the
Company deems necessary or advisable with federal and state laws, rules and
regulations applying to the authorization, issuance, listing or sale of
securities.

     17.  No Employment Right.  Nothing contained in the Plan or in any option
granted thereunder shall confer upon any optionee any right to continued
employment by the Company, any of its subsidiaries or affiliate, or limit in any
way the right of the Company, any of its subsidiaries or its affiliates to
terminate the optionee's employment at any time.  The granting of any option
hereunder shall impose no obligation upon the optionee to exercise any option.

                                       3
<PAGE>
 
PROXY

                           CROSS TIMBERS OIL COMPANY
            810 HOUSTON STREET, SUITE 2000, FORT WORTH, TEXAS 76102

 THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS OF CROSS TIMBERS OIL COMPANY
             FOR THE ANNUAL MEETING OF STOCKHOLDERS ON MAY 19, 1998

The undersigned hereby appoints Bob R. Simpson, Steffen E. Palko, J. Richard
Seeds and Louis G. Baldwin and each of them as Proxies, each with the power to
appoint his substitute, and hereby authorizes each of them to vote all shares of
Cross Timbers Oil Company Common Stock and/or Preferred Stock which the
undersigned may be entitled to vote at the Annual Meeting of Stockholders to be
held at 10:00 a.m. on Tuesday, May 19, 1998 on the First Floor of the W.T.
Waggoner Building, 810 Houston Street, Fort Worth, Texas, or at any adjournment
thereof, upon the matters set forth on the reverse side and described in the
accompanying Proxy Statement and upon such other business as may properly come
before the meeting or any adjournment thereof.

THIS PROXY, WHEN PROPERLY EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED HEREIN
BY THE UNDERSIGNED. IF NO DIRECTION IS GIVEN, THIS PROXY WILL BE VOTED FOR THE
NOMINEES LISTED HEREIN. AS TO SUCH OTHER MATTERS THAT MAY PROPERLY COME BEFORE
THE ANNUAL MEETING, THIS PROXY WILL BE VOTED BY THE PROXIES LISTED ABOVE
ACCORDING TO THEIR DISCRETION.



THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ALL NOMINEES.

                                        Please mark    
                                        your votes as    [X]
                                        indicated in
                                        this example
 
1.  Election of Directors
 
CLASS II DIRECTORS (Three-Year Term):    Bob R. Simpson, Scott G. Sherman
 
CLASS III DIRECTOR (One-Year Term):      Jack P. Randall
 
VOTE FOR ALL NOMINEES          VOTE WITHHELD       
(except as marked - See     as to ALL nominees     
 INSTRUCTION)
        [_]                        [_]

INSTRUCTION:  TO WITHHOLD AUTHORITY TO VOTE FOR ANY INDIVIDUAL NOMINEE, STRIKE
              THROUGH THE NOMINEE'S NAME ABOVE.                        

2.  Approval of the 1998 Stock Incentive Plan    

      FOR          AGAINST      ABSTAIN
      [_]            [_]          [_]

3.  Approval of the 1998 Royalty Trust Option Plan

      FOR          AGAINST      AGAINST
      [_]            [_]          [_]
 


SIGNATURE_________________________SIGNATURE_______________________DATE__________
PLEASE SIGN EXACTLY AS YOUR NAME OR NAMES APPEAR HEREON.  WHEN SIGNING AS
ATTORNEY-IN-FACT, EXECUTOR, ADMINISTRATOR, TRUSTEE OR GUARDIAN, PLEASE GIVE FULL
TITLE AS SUCH.  JOINT OWNERS SHOULD EACH SIGN.  IF A CORPORATION, SIGN IN
CORPORATE NAME BY PRESIDENT OR OTHER AUTHORIZED OFFICER.  IF A PARTNERSHIP, SIGN
IN PARTNERSHIP NAME BY AUTHORIZED PERSON.


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