Document:

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                                                                     Exhibit 4.2

SECOND AMENDED AND RESTATED CONVERTIBLE PROMISSORY NOTE
-------------------------------------------------------

$2,150,000.00                                                 New York, New York
                                                                  March 31, 2003

         FOR VALUE RECEIVED, the undersigned (the "Company") promises to pay to
the order of PVC FUNDING PARTNERS LLC (the "Holder") the principal sum of TWO
MILLION ONE HUNDRED FIFTY THOUSAND DOLLARS AND NO CENTS ($2,150,000.00). All
sums are payable by personal delivery or by mail at 830 Third Avenue, New York,
New York 10022, Attn. Carl Kleidman, or at such other address as the Holder may
designate in writing.

         This Note amends and restates, without interruption or novation, the
indebtedness evidenced by that certain Convertible Promissory Note dated June
16, 1998 which was amended and restated on April 12, 2002 and is referred to in
the Subscription and Contribution Agreement (the "Subscription Agreement") dated
June 16, 1998 by and among HealthPlan Services, Inc. ("HPS") and CENTRA Benefit
Services, Inc. (this Note, together with the various other notes specified in
the Subscription Agreement and listed on Schedule 1 hereto, each of which were
also amended and restated on April 12, 2002, are herein referred to as the
"Original Notes"). Upon the execution and delivery of this Note the Original
Notes as amended and restated on April 12, 2002 will be returned to the
undersigned for cancellation and shall have no further force or validity.

         1. Interest. The principal obligation evidenced by this Note shall bear
interest at the rate of six percent (6%) per annum. Interest shall be due and
payable as described below.

         2. Principal and Interest Payments. The principal balance of this Note
and accrued interest shall be paid as follows:

                  (a) Compound interest shall accrue monthly, and shall be paid
         on a quarterly basis, commencing on March 31, 2003, in in-kind shares
         of the Company's Common Stock, $.01 par value per share (the "Common
         Stock"), the number of which will be determined by dividing the amount
         of interest accrued for the quarter by the average trading price of the
         Common Stock on the Nasdaq OTC Bulletin Board during the last ten
         trading days of the quarter (the "PIK Shares"). The PIK Shares
         representing each quarter's interest payment will be delivered to the
         Holder as soon as practicable not later than the fifth business day of
         the succeeding quarter. Notwithstanding the foregoing, the Holder may
         elect, by giving written notice to the Company at least one business
         day prior to the end of each quarter, to defer receipt of interest
         payments for the completed quarter until (i) a date not later than 90
         days after completion of the Company's fiscal year, at which time the
         Company will pay accrued interest in cash to the extent permitted by
         the Senior Credit Facility as hereafter defined from funds available
         from Available Excess Cash Flow, as defined below, with any remaining
         balance to be paid in PIK Shares, or (ii) Maturity of this Note, as
         defined below, at which point such interest will be paid in cash,
         together with all principal hereunder. "Available Excess Cash Flow"
         means, for each completed fiscal year of the Company, the funds
         available from Excess Cash Flow, as that term is defined in that
         certain Third Amended and Restated Credit Agreement dated on or about
         April 5, 2002 by and among PlanVista Corporation (f/k/a HealthPlan
         Services Corporation) and PlanVista Solutions, Inc. (f/k/a National
         Preferred Provider Network, Inc.), as Borrowers, the lenders thereunder
         (the "Senior Lenders") and Wachovia Bank, National Association (f/k/a
         First Union National Bank), as Administrative Agent for the Senior
         Lenders (in such capacity and in its capacity as agent for the holders
         of the Series C Shares (as defined below) (hereafter the
         "Administrative Agent") as in effect on the date hereof (as amended,
         restated, supplemented, replaced, refinanced, extended or otherwise
         modified from time to time, the "Senior Credit Facility")), after
         making any mandatory prepayments to the Senior Lenders under the Senior
         Credit Facility from Excess Cash Flow.

<PAGE>

                  (b) Unless earlier converted pursuant to the terms of
         Paragraph 3 below, the Company shall pay all outstanding principal
         hereunder, together with all then accrued and unpaid interest, on the
         1st day of April, 2006 (the "Maturity Date").

         3. Conversion Rights. At any time following the close of business of
March 31, 2003 (the "Effective Date") the Holder shall have the right, at its
option, at any time and from time to time prior to the Maturity Date, to convert
in whole or in part provided that no conversion is for an amount less than
twenty-five percent (25%) of the principal amount of this Note, subject to the
terms and provisions contained herein, any portion of the original principal
amount of this Note (to the extent such amount has not been reduced by a partial
prepayment pursuant to Paragraph 8 hereof) into shares of the Common Stock, at a
conversion price equal to $1.00 of principal for each share to be issued on
conversion (the "Conversion Price"). Such conversion shall be effective upon
surrender of this Note to the Company at its principal office at any time during
usual business hours, accompanied, if so required by Company, by a written
instrument or instruments of transfer in form satisfactory to Company duly
executed by the Holder or its attorney duly authorized in writing. In the event
of a partial conversion, the Company shall issue a new note, under the same
terms and conditions as set forth herein, for the remaining balance of the Note.

         4. Issuance of Common Stock Upon Conversion. Within 10 business days
after the surrender of this Note, or part thereof, for conversion, the Company
shall issue and deliver or cause to be issued and delivered to or upon the
written order of the Holder certificates representing the number of fully paid
and nonassessable shares of Common Stock into which this Note, or part thereof,
is converted. Such conversion shall be deemed to have been made at the close of
business on the date that this Note shall have been surrendered for conversion
in whole or in part so that the rights of the Holder with respect to the
principal amount of this Note shall cease at such time, and the Holder entitled
to receive the shares of Common Stock upon conversion of this Note shall be
treated for all purposes as having become the record holder of such shares of
Common Stock at such time and such conversion shall be at the Conversion Price.

         5. Conversion Price Adjustments.

                  (a) Adjustment for Stock Splits and Subdivisions. In the event
         the Company should at any time or from time to time after the Effective
         Date) fix a record date for the effectuation of a split or subdivision
         of the outstanding shares of Common Stock or the determination of
         holders of Common Stock entitled to receive a dividend or other
         distribution payable in additional shares of Common Stock or other
         securities or rights convertible into, or entitling the holders thereof
         to receive directly or indirectly, additional shares of Common Stock
         without payment of any consideration by such holder for the additional
         shares of Common Stock, then, as of such record date, the Conversion
         Price shall be appropriately decreased so that the number of shares of
         Common Stock issuable upon conversion of this Note shall be increased
         in proportion to such increase of outstanding shares.

                  (b) Adjustments for Reverse Stock Splits. If the number of
         shares of Common Stock outstanding at any time after the Effective Date
         is decreased by a combination of the outstanding shares of Common Stock
         then, following the record date of such combination, the Conversion
         Price for this Note shall be appropriately increased so that the number
         of shares of Common Stock issuable on conversion thereof shall be
         decreased in proportion to such decrease in outstanding shares.

                  (c) Adjustments for Recapitalizations. In the event that the
         Company shall be recapitalized, consolidated with or merged into any
         other corporation, or shall sell or convey to any other corporation all
         or substantially all of its property as an entirety, provision shall be
         made as part of the terms of such recapitalization, consolidation,
         merger, sale or conveyance so that the Holder of this Note may
         thereafter receive, in lieu of the Common Stock otherwise issuable upon
         conversion, the same kind and amount of securities or assets as may be
         distributable upon such recapitalization, consolidation, merger, sale
         or conveyance, with respect to the Common Stock.

                  (d) Adjustments for Diluting Issues. The Conversion Price set
         forth in Section 3 shall be adjusted whenever the conversion price of
         the Series C preferred stock of the Company is adjusted (or

                                       -2-

<PAGE>

         could be adjusted but for a waiver by the Series C holders) under the
         provisions of Section 6(d)(iv) or (h) of the Series C Certificate of
         Designation as in effect on the date hereof (a "Series C Dilutive
         Adjustment"). In the event of a Series C Dilutive Adjustment, the new
         Conversion Price shall be determined by multiplying the Conversion
         Price under this Note immediately prior to such Series C Dilutive
         Adjustment by a fraction, the numerator of which is the Series C
         Conversion Price after the Series C Dilutive Adjustment and the
         denominator of which is the Series C Conversion Price in effect
         immediately before the Dilutive Adjustment. If all of the Series C
         preferred stock of the Company is redeemed or converted prior to this
         Note being paid in full, the Conversion Price under this Note shall
         continue to be adjusted whenever any Additional Shares as defined in
         Section 6(d) of the Series C Certificate of Designation are issued at a
         price which is below the Conversion Price under this Note in effect at
         the time of such issuance. In such event, the adjustment shall be
         determined using the same adjustment formula which is used for the
         Series C preferred stock in Section 6(d)(iv) of the Series C
         Certificate of Designation, provided that the references to $1.42172
         per share contained in such section shall be changed to the Conversion
         Price under this Note then in effect immediately prior to such dilutive
         issuance. Upon the occurrence of an adjustment pursuant to the
         provisions of this Section 5(d), the Company shall deliver to the
         Holder a certificate in substantially the same form as the certificate
         specified in Section 6(l) of the Series C Certificate of Designation.
         All sections of the Series C Certificate of Designation referred to
         herein are hereby incorporated by reference herein to the extent
         contemplated by this provision or necessary to implement these
         provisions. Any adjustment to the Series C Conversion Price resulting
         from the conversion of this Note shall not be considered a dilutive
         issuance entitling the Holder hereof to an adjustment under this
         provision.

                  (e) Adjustments. The adjustments referred to in this Paragraph
         5 shall be made successively if more than one event listed herein shall
         occur.

         6. Compliance with Securities Laws. The Holder acknowledges that this
Note and the shares of Common Stock into which it is convertible have not been
and will not be registered under the Securities Act of 1933, as amended (the
"1933 Act") and therefore may not be resold without compliance with the 1933
Act. The Holder agrees that this Note is being acquired solely for its own
account, for investment purposes only, and with no present intention of
distributing, selling or otherwise disposing of it in connection with a
distribution. The Holder covenants, warrants and represents that this Note and
the shares of Common Stock into which it is convertible will not be offered,
sold, assigned, pledged, hypothecated, transferred or otherwise disposed of
except (i) pursuant to an effective Registration Statement under the 1933 Act,
or (ii) after full compliance with all of the applicable provisions of the 1933
Act and all other applicable rules and regulations of the SEC and after the
issuance by counsel to the Company of an opinion that such offer, sale, or other
transaction is exempt from the registration requirements of the 1933 Act. The
Holder further covenants, warrants and represents that, during the one-year
period following the Effective Date, the undersigned will not engage in put,
call, short-sale, straddle or similar transactions intended to reduce the
Holder's risk of owning this Note or the shares of Common Stock into which it is
convertible. Upon the conversion of this Note in whole or in part, certificates
representing the shares of Common Stock shall bear the following legend:

         The shares represented by this certificate were not issued in a
         transaction registered under the Securities Act of 1933, as amended
         (the "Securities Act"), or any applicable state securities laws. The
         shares represented hereby have been acquired for investment only and
         may not be sold or transferred unless such sale or transfer is covered
         by an effective Registration Statement under the Securities Act and
         applicable state securities laws or, in the opinion of counsel to the
         issuer, is exempt from the registration requirements of the Securities
         Act and such laws.

         7. Payment of Interest on Conversion. The Company shall pay all
interest on this Note accrued to the date of surrender for a conversion pursuant
to the terms of Paragraph 3 (the "Surrender Date") except that, in the event
that the Company shall have declared prior to the Surrender Date a cash dividend
payable on its shares of Common Stock to holders of record of such Common Stock
on a date subsequent to the Surrender Date, such payment of interest shall be
adjusted downward to an amount (not less than zero) determined by subtracting
from the aggregate amount thereof an amount equal to the aggregate dividends to
be paid as of such record date on the shares of Common Stock issuable upon
conversion of this Note.

                                       -3-

<PAGE>

         8. Prepayment. Subject to the subordination provisions of paragraph 11,
this Note may be prepaid in whole or in part, at any time without premium or
penalty at the option of the Company at a prepayment price equal to 100% of the
principal amount to be prepaid plus accrued interest to the prepayment date. In
order to exercise its right to prepayment hereunder, the Company shall send
written notice to the Holder of the Company's intention to exercise its
prepayment rights hereunder, which notice shall be provided not less than
sixteen (16) calendar days prior to the stated date of prepayment. In the case
of partial prepayment, the amount and other details thereof shall be noted.
Following the date of notice of prepayment, or partial prepayment, as the case
may be, the Holder's conversion rights provided in Paragraph 3 hereof shall be
accelerated and the Holder shall have a period of fifteen (15) calendar days to
exercise such conversion rights. After the expiration of such fifteen (15) day
period, unless the Company shall have failed to tender to the Holder the amount
to be prepaid and accrued interest under this Note, the Holder shall have no
further rights of conversion with respect to that portion of the Note so
prepaid.

         9. Default. If any portion of the principal or interest of this Note is
not paid when due, and the Company fails to cure the same within thirty (30)
days after such event, then default shall be deemed to have occurred on the
termination of such thirty (30) day period.

         10. Right of Acceleration. Upon the happening of any of the following
events, the entire unpaid principal balance and accrued interest of this Note
shall, at the option of the Holder, become immediately due and payable, and may
be collected forthwith without notice to the Company, regardless of the
stipulated date of maturity:

                  (a) Upon a default in payment under this Note; or

                  (b) If the undersigned becomes insolvent or bankrupt or unable
         to pay its obligations as they become due, or the undersigned makes an
         assignment for the benefit of its creditors, or the undersigned files a
         petition under the bankruptcy laws of the United States, or the
         undersigned suffers to be filed a petition under the bankruptcy laws of
         the United States which is (i) consented to by the undersigned or (ii)
         not dismissed within sixty (60) days thereof, or a receiver is
         appointed for the property or business of the undersigned.

         11. Subordination. The Company agrees, and the Holder by accepting this
Note agrees, notwithstanding anything in this Note to the contrary, to the
subordination of this Note as follows:

                  (a) Any and all obligations and liabilities of the Company to
         Holder under this Note, including, without limitation, payment of
         principal and interest (other than, so long as no Proceeding has been
         commenced, payment of interest in PIK Shares or cash interest paid from
         Excess Cash Flow as specifically permitted under the terms of this
         Note), whether direct or indirect, absolute or contingent, joint or
         several, secured or unsecured, due or to become due, now existing or
         later arising and whatever the amount and however evidenced (the
         "Subordinated Indebtedness") are subordinated in right and time of
         payment to any and all obligations and liabilities of the Company to
         (i) the Administrative Agent and the Senior Lenders under or in
         connection with the Company's Senior Credit Facility and any other loan
         document contemplated thereby or related thereto, including, without
         limitation principal and interest payments, whether direct or indirect,
         absolute or contingent, joint or several, secured or unsecured, due or
         to become due, now existing or later arising and however evidenced, and
         whether arising prior to or after the commencement of any proceeding
         under Title 11 of the United States Code or is an allowed claim in any
         such proceeding, together with all other sums due thereon and all costs
         of collecting the same (including, without limitation, reasonable
         attorney fees) for which the Company is liable and any other
         obligations of the Company or its subsidiaries to the Senior Lenders
         and (ii) the Administrative Agent and holders of the Company's shares
         of Series C Preferred Stock, $.01 par value per share (the "Series C
         Shares"), including, without limitation, payment of the full
         Liquidation Preference of the Series C Shares upon Liquidation and
         payment of the Redemption Price at redemption (as each such term is
         defined in the Certificate of Designation of Series and Determination
         of Rights and Preferences of Series C Convertible Preferred Stock
         relating to the Series C Preferred Stock, as such provisions may be
         amended, restated, supplemented or otherwise modified from time to
         time, a copy of which has been delivered to Holder), as applicable,
         whether direct or indirect, absolute or contingent, joint or several,
         secured or unsecured, due or

                                       -4-

<PAGE>

         to become due, now existing or later arising and however evidenced and
         whether arising prior to or after the commencement of any proceeding
         under Title 11 of the United States Code or is an allowed claim in any
         such proceeding, together with all other sums due thereon and all costs
         of collecting the same (collectively, the "Senior Obligations"). For
         purposes of this Note, Senior Obligations shall be deemed to include
         any debt which is incurred after the date of this Note, the proceeds of
         which are used to retire or refinance all or any part of the
         obligations and liabilities of the Company to the Senior Lenders and
         the Administrative Agent and, for purposes of this subordination
         provision, the lender and administrative agent under such replacement
         debt shall step into the shoes of the Senior Lenders and Administrative
         Agent under the Senior Credit Facility with respect to the
         subordination rights provided herein or the holders of these Notes
         shall execute new agreements with the new lenders to the same effect.

                  (b) Until the indefeasible payment in full in cash of the
         Senior Obligations, Holder will not ask for, demand, sue for, take or
         receive (by way of voluntary or mandatory payment, acceleration,
         set-off or counterclaim, foreclosure or other realization on security,
         dividends in bankruptcy or otherwise), or offer to make any discharge
         or release of, any of the Subordinated Indebtedness, and Holder waives
         any such rights with respect to the Subordinated Indebtedness, nor
         shall Holder exercise any rights of subrogation or other similar rights
         with respect to the Senior Obligations.

                  (c) In the event of any Proceeding involving the Company: (i)
         all Senior Obligations first shall be indefeasibly paid in full in cash
         before any payment of or with respect to the Subordinated Indebtedness
         shall be made; (ii) any payment or distribution, whether in cash,
         property or securities which, but for the terms hereof, otherwise would
         be payable or deliverable in respect of the Subordinated Indebtedness,
         shall be paid or delivered directly to the Administrative Agent until
         all Senior Obligations are indefeasibly paid in full in cash, and
         Holder irrevocably authorizes, empowers and directs all receivers,
         trustees, liquidators, custodians, conservator and others having
         authority in the premises to effect all such payments and
         distributions, and Holder also irrevocably authorizes, empowers and
         directs the Administrative Agent to demand, sue for, collect and
         receive every such payment or distribution; and (iii) Holder agrees not
         to initiate or prosecute or encourage any other person to initiate or
         prosecute any claim, action or other proceeding challenging the
         enforceability of the Senior Obligations. For purposes hereof, the term
         "Proceeding" shall mean any voluntary or involuntary insolvency,
         bankruptcy, receivership, custodianship, liquidation, dissolution,
         reorganization, assignment for the benefit of creditors, appointment of
         a custodian, receiver, trustee or other officer with similar powers or
         any other proceeding for the reorganization, liquidation, dissolution
         or other winding upon the Company.

                  (d) Should any payment, distribution of property or securities
         (other than, so long as no Proceeding has commenced, PIK Shares in
         respect of accrued interest or cash interest paid from Excess Cash Flow
         as specifically permitted under the terms of this Note) or proceeds be
         received by Holder upon or with respect to the Subordinated
         Indebtedness prior to the satisfaction in full of the Senior
         Obligations, Holder shall immediately deliver same to the
         Administrative Agent in the form received (except for endorsement or
         assignment by Holder where required by the Administrative Agent), for
         application on the Senior Obligations (whether or not then due and in
         such order of maturity as the Administrative Agent elects) and, until
         so delivered, the same shall be held in trust by Holder as the property
         of the Administrative Agent, Senior Lender, and the holders of the
         Series C Shares. In the event of the failure of Holder to make any
         endorsement or assignment, the Administrative Agent is irrevocably
         authorized and appointed as attorney-in-fact for Holder to make the
         same.

                  (e) Notwithstanding any prior revocation, termination,
         surrender, or discharge of this Note in whole or in part, or of the
         provisions of this Paragraph 11, the effectiveness of the subordination
         provisions of this Paragraph 11 (the "Subordination Provisions") shall
         automatically continue or be reinstated in the event that any payment
         received or credit given by the Administrative Agent, any Senior Lender
         or any holder of Series C Shares in respect of the Senior Obligations
         are returned, disgorged, or rescinded under any applicable state or
         federal law, including, without limitation, laws pertaining to
         bankruptcy or insolvency, in which case the Subordination Provisions
         shall be enforceable against Holder as if the returned, disgorged, or
         rescinded payment or credit had not been received or given by the
         Administrative Agent, any Senior Lender or any holder of Series C
         Shares relied

                                       -5-

<PAGE>

         upon this payment or credit or changed its position as a consequence of
         it.

                  (f) This Note constitutes a continuing agreement of
         subordination, even though at times the Company may not be indebted to
         or obligated to make payments to the Administrative Agent, Senior
         Lenders or holders of the Series C Shares. This Note shall bind and be
         for the benefit of Holder, the Administrative Agent, Senior Lenders and
         the holders of the Series C Shares and their respective successors and
         assigns. This Note may not be accelerated and, except for interest
         payments expressly permitted in this paragraph 11, may not be prepaid.

                  (g) Holder hereby agrees that it will not amend, modify or
         otherwise alter (or suffer to be amended, modified or altered) any of
         the terms and conditions of this Note without prior written notice to
         and the approval of the Administrative Agent.

                  (h) Nothing stated herein is intended, so long as no
         Proceeding has commenced, to: (a) subordinate, prevent or limit the
         Company from paying PIK Shares to Holder as interest or limit Holder
         from accepting such PIK Shares for its own benefit and account, or (b)
         subordinate, prevent or limit the Company from making cash interest
         payments, to the extent permitted by the Credit Agreement, from Excess
         Cash Flow as provided herein or prevent Holder from accepting such cash
         payment for its own benefit and account. Notwithstanding anything in
         this Note to the contrary, from and after June 12, 2005 so long as no
         Proceeding has commenced prior to such date, the subordination
         provisions of this Paragraph 11 shall no longer apply to the Senior
         Obligations in respect of the Series C Shares but for the avoidance of
         doubt shall remain in effect in all respects with respect to all other
         Senior Obligations.

         12. Waiver. Presentment for payment, notice of dishonor, protest and
notice of protest are hereby waived.

         13. Choice of Law; Venue. This Note shall be governed by, and construed
and enforced in accordance with, the laws of the State of Florida. The Company
consents and agrees that Hillsborough County, Florida, shall be the proper,
exclusive, and convenient venue for any legal proceeding in federal or state
court arising under this Note, and waives any defense, whether asserted by
motion or by pleading, that Hillsborough County, Florida, is an improper or
inconvenient venue.

         14. Binding Effect. This Note shall be binding upon the Company and its
successors and assigns and shall inure to the benefit of the Holder.

                                       -6-

<PAGE>

         IN WITNESS WHEREOF, the Company has executed this Note by and through
its duly authorized officer effective the date written above.

                                        PLAN VISTA CORPORATION

                                        By: /s/ James Kearns
                                           ------------------------------------
                                               James Kearns
                                        Title: Senior Vice President

                                       -7-

<PAGE>

SCHEDULE 1 TO
SECOND AMENDED AND RESTATED CONVERTIBLE PROMISSORY NOTE
-------------------------------------------------------

1)       Convertible Promissory Note of Health Plan Services Corporation in the
         Principal Amount of $2,580,200.84, dated June 16, 1998, payable to
         Centra Benefit Services, Inc. as amended and restated on April 12, 2002

2)       Convertible Promissory Note of Health Plan Services Corporation in the
         Principal Amount of $232,800.08, dated June 16, 1998, payable to Centra
         Benefit Services, Inc. as amended and restated on April 12, 2002

3)       Convertible Promissory Note of Health Plan Services Corporation in the
         Principal Amount of $485,000.16, dated June 16, 1998, payable to Centra
         Benefit Services, Inc. as amended and restated on April 12, 2002

4)       Convertible Promissory Note of Health Plan Services Corporation in the
         Principal Amount of $119,998.74, dated June 16, 1998, payable to Centra
         Benefit Services, Inc. as amended and restated on April 12, 2002

5)       Convertible Promissory Note of Health Plan Services Corporation in the
         Principal Amount of $485,000.16, dated June 16, 1998, payable to Centra
         Benefit Services, Inc. as amended and restated on April 12, 2002

6)       Convertible Promissory Note of Health Plan Services Corporation in the
         Principal Amount of $97,000.03, dated June 16, 1998, payable to Centra
         Benefit Services, Inc. as amended and restated on April 12, 2002

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EXHIBIT 4.2  

 
 

STOCK PURCHASE AGREEMENT    
  

        This Stock Purchase Agreement (this "Agreement"), dated as of February 14, 2003, is between Liberty Media Corporation, a company incorporated in the State
of Delaware, United States of America (the "Company"), and Sumitomo Corporation, a company incorporated in Japan (the "Purchaser"). 

        1.    Agreement to Purchase and Sell Shares.    On the terms and subject to the conditions contained in this
Agreement, the Company agrees to issue and sell to the Purchaser and the Purchaser agrees to purchase from the Company 13,336,976 shares of the Company's Series A Common Stock ("Series A
Common Stock") (the "Shares"). The number of Shares is equal to the quotient derived from dividing the Purchase Price by the Per Share Purchase Price (both as defined below) rounded up or down, as the
case may be, to the nearest whole share. 

        2.    Purchase Price.    The purchase price payable for the Shares shall be 1,274.36 Japanese Yen per Share (the "Per
Share Purchase Price"). The Per Share Purchase Price was calculated to be the product of (i) $10.58 (the sum of $1.00 and the average US Dollar closing price of the Series A Common Stock
on the New York Stock Exchange for the eight trading days ended February 7, 2003) and (ii) 120.45, the agreed upon exchange ratio of the US Dollar to the Japanese Yen, which represents
the average of the "TTS" and "TTB" exchange rates of the Bank of Tokyo Mitsubishi for the US Dollar in Japanese Yen on February 14, 2003, Tokyo time, as shown on the Reuters screen page "CNJB".
The aggregate purchase price shall be 16,996,122,000 Japanese Yen (the "Purchase Price"). Payment of the Purchase Price shall be made by wire transfer of immediately available Japanese Yen to an
account that was designated by the Company to the Purchaser no later than two business days prior to the date of this Agreement. 

        3.    Closing.    (a) The closing of the purchase and sale of the Shares pursuant to this Agreement (the "Closing")
shall take place on February 14, 2003, New York time (the "Closing Date"). 

        (b)  In
connection with the Closing: 

	(1)
	On
or before the close of business New York time on the Closing Date, the Company shall deliver to the Purchaser certificates representing the Shares;

	(2)
	On
or before the close of business Tokyo time on February 14, 2003, Purchaser shall deliver to the Company the Purchase Price for the Shares in accordance with Section 2
above; and

	(3)
	The
Company and the Purchaser shall enter into a Registration Rights Agreement in the form of Exhibit A hereto (the "Registration Rights Agreement"). 

        4.    Representations and Warranties of the Company.    The Company represents and warrants to the Purchaser as
follows: 

        (a)    Due Organization and Qualification.    The Company is a corporation duly organized, validly existing and in
good standing under the laws of the State of Delaware, with corporate power to own its properties and to conduct its business as they are now owned and conducted. 

        (b)    Authorization; No Conflict.    The Company has the requisite corporate power to enter into this Agreement and
the Registration Rights Agreement and to perform its obligations hereunder and thereunder. The execution and delivery by the Company of, and the performance by the Company of its obligations under,
this Agreement and the Registration Rights Agreement have been duly authorized by all requisite corporate action of the Company, including by its board of directors, and each of this Agreement and the
Registration Rights Agreement is a valid and binding agreement of the Company enforceable against the Company in accordance with its terms, except as such may be limited by bankruptcy, insolvency or
other similar laws affecting the enforcement of creditors' rights in general and by general principles of equity. None of the execution and delivery by the Company of this Agreement and the
Registration Rights Agreement, the issuance and sale by the Company to the Purchaser of the Shares in the manner prescribed herein, the consummation of the transactions contemplated hereby or thereby,
or the compliance by the Company with the terms, conditions and provisions hereof or thereof, will conflict with or result in a breach or violation of any of the terms, conditions or provisions of the
Company's articles of incorporation or by-laws. 

1

 

        (c)    Issuance of Shares.    The Shares, when issued, sold and delivered by the Company to the Purchaser pursuant to
this Agreement, will be duly authorized and validly issued, fully paid and non-assessable, and will be free and clear of any security interest, lien, charge or encumbrance of any nature
whatsoever. 

        (d)    Commission Filings.    The Company has filed all reports, registration statements, documents and other filings
required to be filed by it with the Securities and Exchange Commission (the "Commission") since December 31, 2000 (collectively, the "SEC Reports"). As of the respective dates of their filing
with the
Commission, the SEC Reports complied in all material respects with the applicable provisions of the Securities Act of 1933, as amended (the "Securities Act") or the Securities Exchange Act of 1934, as
amended and the rules and regulations thereunder and did not contain any untrue statement of a material fact or omitted to state a material fact necessary to make the statements made therein, in light
of the circumstances under which made, not misleading. The consolidated financial statements (including any notes thereto) of the Company, and its subsidiaries, included in the Company's SEC Reports,
at the time filed, fairly presented in all material respects the consolidated financial position, results of operations and cash flows of the Company and its consolidated subsidiaries, as at the
respective dates thereof and for the respective periods indicated therein. 

        (e)    Private Offering.    No form of general solicitation or general advertising was used by the Company or its
representatives in connection with the offer or sale of the Shares by the Company to Purchaser. Assuming the accuracy of the representation made by Purchaser in Section 5(c), no registration of
the offer and sale of the Shares by the Company to Purchaser, pursuant to the provisions of the Securities Act or any state securities or "blue sky" laws, will be required for the offer, sale or
issuance of the Shares by the Company to Purchaser. The Company agrees that neither it, nor anyone acting on its behalf, shall offer to sell any securities of the Company so as to cause the
representation and warranty contained in this Section 4(c) to become untrue. 

        (f)    Governmental.    No consent, approval, hearing, filing, registration or other action, with or of any United
States federal, state or local governmental authority is required by the Company in connection with the execution and delivery of this Agreement the issuance and sale of the Shares, or the
consummation of the transactions contemplated by this Agreement, other than those obtained or made on or prior to the date hereof. 

        5.    Representations and Warranties of the Purchaser.    The Purchaser represents and warrants to the Company as
follows: 

        (a)    Due Organization.    The Purchaser is a corporation duly organized, validly existing and in good standing under
the laws of Japan. 

        (b)    Authorization.    The Purchaser has the requisite corporate power to enter into this Agreement and the
Registration Rights Agreement and to perform its obligations hereunder and thereunder. The execution and delivery by the Purchaser of, and the performance by the Purchaser of its obligations under,
this Agreement have been duly authorized by all requisite corporate action of the Purchaser, including by its board of directors, and each of this Agreement and the Registration Rights Agreement is a
valid and binding agreement of the Purchaser enforceable against the Purchaser in accordance with its terms, except as such may be limited by bankruptcy, insolvency or other similar laws affecting the
enforcement of creditors' rights in general and by general principles of equity. 

        (c)    Investment Representations.    Purchaser is an "accredited investor" as defined in Rule 501(a) of
Regulation D under the Securities Act. Purchaser is acquiring the Shares for its own account for investment purposes only and not with a view to, or for resale in connection with, any
distribution thereof in violation of applicable federal or state securities laws. Purchaser understands that the Shares have not and will not (except as provided in the Registration Rights Agreement)
be registered or qualified under the Securities Act or state securities laws in reliance upon an exemption from such registration or qualification. Purchaser further understands that the Shares cannot
be sold unless registered under the Securities Act or an exemption from such registration is available. Purchaser has been furnished with or has had full access to all of the
information that it considers necessary or appropriate to make an informed investment decision with respect to the Shares, and has had the opportunity to ask questions of and receive answers from
management of the Company regarding business, management and financial affairs of the Company and the terms and conditions of the investment in the Shares. 

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        6.    Survival of Representations, Warranties and Covenants; Indemnification.    The representations, warranties and
covenants contained herein shall survive the execution of this Agreement and the consummation of the transactions contemplated hereby. Each of the Company and the Purchaser shall indemnify, defend and
hold harmless the other and each of the others respective affiliates, officers, directors, agents and employees from and against any and all losses, damages, liabilities, claims, proceedings, costs
and expenses (including the fees, disbursements and other charges of counsel reasonably incurred) resulting from or arising out of any breach of any of its representation, warranties covenants or
other agreements in this Agreement. 

        7.    Legend.    So long as required by law, each certificate representing any portion of the Shares shall contain, be
stamped or otherwise imprinted with a legend in the following form (in addition to any legend required under applicable state securities laws): 

THE
SECURITIES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR UNDER ANY STATE SECURITIES LAW, AND MAY NOT BE SOLD, TRANSFERRED,
ASSIGNED, PLEDGED, HYPOTHECATED OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT AND PURSUANT TO THE PROVISIONS OF ANY APPLICABLE STATE SECURITIES LAWS
COVERING SUCH SECURITIES OR UNLESS THE ISSUER RECEIVES AN OPINION OF COUNSEL FOR THE HOLDER OF THESE SECURITIES, REASONABLY SATISFACTORY TO THE ISSUER, STATING THAT SUCH SALE, TRANSFER, ASSIGNMENT OR
HYPOTHECATION IS EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND THE PROVISIONS OF ANY APPLICABLE STATE SECURITIES LAWS. 

        8.    Successors and Assigns.    This Agreement shall be binding upon, and inure to the benefit of, the parties hereto
and their respective heirs, personal representatives, successors and assigns. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their
respective successors and assigns any rights, remedies, obligations or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement. 

        9.    Notices.    Any notice or other communication provided for herein or given hereunder to a party hereto shall be
in writing and shall be given by personal delivery, by telecopier or by mail (registered or certified mail, postage prepaid, return receipt requested) to the respective parties as follows: 

        If
to the Company: 

Liberty
Media Corporation

12300 Liberty Boulevard

Englewood, Colorado 80112

Attention: Elisa Erickson

Telecopier: 720-875-5858 

        If
to the Purchaser: 

Sumitomo
Corporation

1-8-11 Harumi

Chuo-ku, Tokyo 104-8610

Japan

	 	Attention:	 	Tsuguhito Aoki

Corporate Officer,

Assistant to General Manager,

Media, Electronics and Network Business Unit
	 	Fax:	 	+81 3 5166 6301

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        With
a copy to:

	 	Attention:	 	Naoki Saito

Deputy General Manager

Planning and Administration Dept.

Media, Electronics and Network Business Unit
	 	Fax:	 	+81 3 5166 6308

or
to such other address with respect to a party as such party shall notify the other in writing. Any such notice shall be deemed given upon receipt. 

        10.    Amendment; Waiver.    This Agreement may not be amended except by a writing duly signed by the parties. No
party may waive any of the terms or conditions of this Agreement except by a duly signed writing referring to the specific provision to be waived. 

        11.    Governing Law.    This Agreement shall be governed by, and construed and enforced in accordance with, the laws
of the State of Delaware. 

        12.    Entire Agreement.    This Agreement constitutes the entire agreement with respect to the sale of the Shares,
and supersedes all other and prior agreements and understandings relating to such matter, both written and oral, among the parties to this Agreement. 

        13.    Publicity.    No press release or other public announcement related to this Agreement or the transactions
contemplated hereby will be issued by the Company or the Purchaser without the prior written approval of the other party (which consent shall not be unreasonably withheld). 

        14.    Expenses.    Except as otherwise expressly contemplated herein to the contrary, each party hereto shall pay its
own expenses incident to preparing for, entering into and carrying out this Agreement and the consummation of the transactions contemplated hereby. 

        15.    Captions.    The Section and Paragraph captions herein are for convenience of reference only, do not constitute
part of this Agreement and shall not be deemed to limit or otherwise affect any of the provisions hereof. 

        16.    Counterparts.    This Agreement may be executed in two or more counterparts, each of which shall be deemed an
original but all of which shall constitute one and the same instrument. 

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Liberty Stock Purchase Agreement  

        IN
WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed and delivered on the day and year first written above. 

	 	 	LIBERTY MEDIA CORPORATION
	

 	
 	
By:	

/s/  GRAHAM HOLLIS      
 Name:  Graham Hollis

Title:    Authorized Officer
	

 	
 	
SUMITOMO CORPORATION
	

 	
 	
By:	

/s/  SHINGO YOSHII      
 Name:  Shingo Yoshii

Title:    General Manager Media Division

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QuickLinks

STOCK PURCHASE AGREEMENT

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