1 EXHIBIT 10 STOCK OPTION AGREEMENT STOCK OPTION AGREEMENT, dated as of January 10, 1996 (the "Agreement"), by and between Central Bancorporation, a Washington corporation ("Issuer"), and InterWest Bancorp, Inc., a Washington corporation ("Grantee"). WHEREAS, Grantee and Issuer have entered into an Agreement and Plan of Mergers dated as of January 10, 1996 (the "Plan"), providing for, among other things, the merger of Issuer with and into Grantee, with Grantee as the surviving corporation; and WHEREAS, as a condition and inducement to Grantee's execution of the Plan, Grantee has required that Issuer agree, and Issuer has agreed, to grant Grantee the Option (as defined below); NOW, THEREFORE, in consideration of the foregoing and the respective representations, warranties, covenants and agreements set forth herein and in the Plan, and intending to be legally bound hereby, Issuer and Grantee agree as follows: 1. DEFINED TERMS. Capitalized terms which are used but not defined herein shall have the meanings ascribed to such terms in the Plan. 2. GRANT OF OPTION. Subject to the terms and conditions set forth herein, Issuer hereby grants to Grantee an irrevocable option (the "Option") to purchase up to 201,898 shares (as adjusted as set forth herein, the "Option Shares", which shall include the Option Shares before and after any transfer of such Option Shares) of common stock, par value $1.67 per share ("Issuer Common Stock"), of Issuer at a purchase price per Option Share (the "Purchase Price") equal to $26.00. 3. EXERCISE OF OPTION. (a) Provided that (i) Grantee or Holder (as defined below), as applicable, shall not be in material breach of the agreements or covenants contained in this Agreement or the Plan, and (ii) no preliminary or permanent injunction or other order against the delivery of shares covered by the Option issued by any court of competent jurisdiction in the United States shall be in effect, the Holder may exercise the Option, in whole or in part, at any time and from time to time following the occurrence of a Purchase Event (as hereinafter defined); PROVIDED that the Option shall terminate and be of no further force and effect upon the earliest to occur of (A) the Effective Date, (B) termination of the Plan by Issuer in accordance with the terms thereof prior to the occurrence of a Purchase Event or a Preliminary Purchase Event (as hereinafter defined) (an "Issuer Termination"), (C) 15 months after the termination of the Plan by Issuer in accordance with the terms thereof other than pursuant to an Issuer Termination, and (D) 15 months after the termination of the Plan by Grantee in accordance with the terms thereof; PROVIDED, HOWEVER, that any purchase of shares upon exercise of the Option shall be subject to compliance with applicable law, including, without limitation, the Bank Holding Company Act of 1956, as amended (the "BHC Act"). The term "Holder" shall mean the holder or holders of the Option from time to time, and which initially is Grantee. (b) As used herein, a "Purchase Event" means any of the following events: (i) Without Grantee's prior written consent, Issuer shall have authorized, recommended, publicly proposed or publicly announced an intention to authorize, recommend or propose, or entered into an agreement with any person (other than Grantee or any subsidiary of Grantee) to effect an Acquisition Transaction. As used herein, the term "Acquisition Transaction" shall mean (A) a merger, consolidation or similar transaction involving Issuer or any of its significant subsidiaries, (B) the disposition, by sale, lease, exchange or otherwise, of assets or deposits of Issuer or any of its significant subsidiaries representing in 1 2 either case 20% or more of the consolidated assets or deposits of Issuer and its subsidiaries, or (C) the issuance, sale or other disposition of (including by way of merger, consolidation, share exchange or any similar transaction) securities representing 20% or more of the voting power of Issuer or any of its significant subsidiaries other than the issuance of Issuer Common Stock upon the exercise of outstanding options or the conversion of outstanding convertible securities of Issuer; or (ii) any person (other than Grantee or any subsidiary of Grantee) shall have acquired beneficial ownership (as such term is defined in Rule 13d-3 promulgated under the Exchange Act) of or the right to acquire beneficial ownership of, or any "group" (as such term is defined under the Exchange Act) shall have been formed which beneficially owns or has the right to acquire beneficial ownership of, 15% or more (or if such person or group is the beneficial owner of 15% or more on the date hereof, such person or group acquires an additional 5% or more) of the voting power of Issuer or any of its significant subsidiaries. (c) As used herein, a "Preliminary Purchase Event" means any of the following events: (i) any person (other than Grantee or any subsidiary of Grantee) shall have commenced (as such term is defined in Rule 14d-2 under the Exchange Act) or shall have filed a registration statement under the Securities Act with respect to, a tender offer or exchange offer to purchase any shares of Issuer Common Stock such that, upon consummation of such offer, such person would own or control 20% or more of the then outstanding shares of Issuer Common Stock (such an offer being referred to herein as a "Tender Offer" or an "Exchange Offer," respectively); or (ii) the holders of Issuer Common Stock shall not have approved the Plan at the Meeting, the Meeting shall not have been held or shall have been canceled prior to termination of the Plan, or Issuer's Board of Directors shall have withdrawn or modified in a manner adverse to Grantee the recommendation of Issuer's Board of Directors with respect to the Plan, in each case after it shall have been publicly announced that any person (other than Grantee or any subsidiary of Grantee) shall have (A) made a proposal to engage in an Acquisition Transaction, or (B) commenced a Tender Offer or filed a registration statement under the Securities Act with respect to an Exchange Offer; or (iii) any person, other than Grantee or any subsidiary of Grantee, shall have made a bona fide proposal to Issuer or its stockholders by public announcement, or written communication that is or becomes the subject of public disclosure, to engage in an Acquisition Transaction; or (iv) after a bona fide proposal is made by a third party to Issuer or its stockholders to engage in an Acquisition Transaction, Issuer shall have breached any covenant or obligation contained in the Plan and such breach would entitle Grantee to terminate the Plan under Section 7.1(b) thereof (without regard to the cure period provided for therein unless such cure is promptly effected without jeopardizing consummation of the Mergers pursuant to the terms of the Plan); or (v) any person, other than Grantee or any subsidiary of Grantee, other than in connection with a transaction to which Grantee has given its prior written consent, shall have filed an application or notice with the Board of Governors of the Federal Reserve System (the "Federal Reserve Board"), or other federal or state bank regulatory authority, for approval to engage in an Acquisition Transaction. As used in this Agreement, "person" shall have the meaning specified in Sections 3(a)(9) and 13(d)(3) of the Exchange Act. (d) Issuer shall notify Grantee promptly in writing of the occurrence of any Preliminary Purchase Event or Purchase Event (in either case, a "Triggering Event"), it being understood that the giving of such notice by Issuer shall not be a condition to the right of Holder to exercise the Option. 2 3 (e) In the event Holder wishes to exercise the Option, it shall send to Issuer a written notice (the date of which being herein referred to as the "Notice Date") specifying (i) the total number of Option Shares it intends to purchase pursuant to such exercise, and (ii) a place and date not earlier than three business days nor later than 15 business days from the Notice Date for the closing (the "Closing") of such purchase (the "Closing Date"); PROVIDED, HOWEVER, if any required application for listing such shares on the NASDAQ National Market System has not been approved by the date so specified, such date shall be extended for a period not to exceed 21 days from the Notice Date. If prior notification to or approval of the Federal Reserve Board or any other regulatory authority is required in connection with such purchase, Issuer shall cooperate with the Holder in the filing of the required notice of application for approval and the obtaining of such approval and the Closing shall occur immediately following such regulatory approvals (and any mandatory waiting periods). Any exercise of the Option shall be deemed to occur on the Notice Date relating thereto. 4. PAYMENT AND DELIVERY OF CERTIFICATES. (a) On each Closing Date, Holder shall (i) pay to Issuer, in immediately available funds by wire transfer to a bank account designated by Issuer, an amount equal to the Purchase Price multiplied by the number of Option Shares to be purchased on such Closing Date, and (ii) present and surrender this Agreement to the Issuer at the address of the Issuer specified in subsection (f) of Section 11 hereof. (b) At each Closing, simultaneously with the delivery of immediately available funds and surrender of this Agreement as provided in subsection (a) of this Section 4, (i) Issuer shall deliver to Holder (A) a certificate or certificates representing the Option Shares to be purchased at such Closing, which Option Shares shall be free and clear of all liens, claims, charges and encumbrances of any kind whatsoever and subject to no preemptive rights, and (B) if the Option is exercised in part only, an executed new agreement with the same terms as this Agreement evidencing the right to purchase the balance of the shares of Issuer Common Stock purchasable hereunder, and (ii) Holder shall deliver to Issuer a letter agreeing that Holder shall not offer to sell or otherwise dispose of such Option Shares in violation of applicable federal and state law or of the provisions of this Agreement. (c) In addition to any other legend that is required by applicable law, certificates for the Option Shares delivered at each Closing shall be endorsed with a restrictive legend which shall read substantially as follows: THE TRANSFER OF THE STOCK REPRESENTED BY THIS CERTIFICATE IS SUBJECT TO RESTRICTIONS ARISING UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND PURSUANT TO THE TERMS OF A STOCK OPTION AGREEMENT DATED AS OF ___________ __, 1996. A COPY OF SUCH AGREEMENT WILL BE PROVIDED TO THE HOLDER HEREOF WITHOUT CHARGE UPON RECEIPT BY THE ISSUER OF A WRITTEN REQUEST THEREFOR. It is understood and agreed that the above legend shall be removed by delivery of substitute certificate(s) without such legend if Holder shall have delivered to Issuer a copy of a letter from the staff of the SEC, or an opinion of counsel in form and substance reasonably satisfactory to Issuer and its counsel, to the effect that such legend is not required for purposes of the Securities Act. (d) Upon the giving by Holder to Issuer of the written notice of exercise of the Option provided for under subsection (e) of Section 3 hereof, the tender of the applicable purchase price in immediately available funds and the tender of this Agreement to Issuer, Holder shall be deemed to be the holder of record of the shares of Issuer Common Stock issuable upon such exercise, notwithstanding that the stock transfer books of Issuer shall then be closed or that certificates representing such shares of Issuer Common Stock shall not then be actually delivered to Holder. Issuer shall pay all expenses, and any and all United States federal, state, and local taxes and other charges that may be payable in connection with the preparation, issuance and delivery of stock certificates under this Section in the name of Holder or its assignee, transferee, or designee. 3 4 (e) Issuer agrees (i) that it shall at all times maintain, free from preemptive rights, sufficient authorized but unissued or treasury shares of Issuer Common Stock so that the Option may be exercised without additional authorization of Issuer Common Stock after giving effect to all other options, warrants, convertible securities and other rights to purchase Issuer Common Stock, (ii) that it will not, by charter amendment or through reorganization, consolidation, merger, dissolution or sale of assets, or by any other voluntary act, avoid or seek to avoid the observance or performance of any of the covenants, stipulations or conditions to be observed or performed hereunder by Issuer, (iii) promptly to take all action as may from time to time be required (including (A) complying with all premerger notification, reporting and waiting period requirements specified in 15 U.S.C. Section 18a and regulations promulgated thereunder and (B) in the event, under the BHC Act, or the Change in Bank Control Act of 1978, as amended, or a state banking law, prior approval of or notice to the Federal Reserve Board or to any state regulatory authority is necessary before the Option may be exercised, cooperating fully with Holder in preparing such applications or notices and providing such information to the Federal Reserve Board or such state regulatory authority as they may require) in order to permit Holder to exercise the Option and Issuer duly and effectively to issue shares of the Issuer Common Stock pursuant hereto, and (iv) promptly to take all action provided herein to protect the rights of Holder against dilution. 5. REPRESENTATIONS AND WARRANTIES OF ISSUER. Issuer hereby represents and warrants to Grantee (and Holder, if different than Grantee) as follows: (a) Due Authorization. Issuer has all requisite corporate power and authority to enter into this Agreement and, subject to any approvals or consents referred to herein, to consummate the transactions contemplated hereby. The execution and delivery of this Agreement and the consummation of the transactions contemplated hereby have been duly authorized by all necessary corporate action on the part of Issuer. This Agreement has been duly executed and delivered by Issuer. (b) Authorized Stock. Issuer has taken all necessary corporate and other action to authorize and reserve and to permit it to issue, and, at all times from the date hereof until the obligation to deliver Issuer Common Stock upon the exercise of the Option terminates, will have reserved for issuance, upon exercise of the Option, the number of shares of Issuer Common Stock necessary for Holder to exercise the Option, and Issuer will take all necessary corporate action to authorize and reserve for issuance all additional shares of Issuer Common Stock or other securities which may be issued pursuant to Section 7 upon exercise of the Option. The shares of Issuer Common Stock to be issued upon due exercise of the Option, including all additional shares of Issuer Common Stock or other securities which may be issuable pursuant to Section 7, upon issuance pursuant hereto, shall be duly and validly issued, fully paid and nonassessable, and shall be delivered free and clear of all liens, claims, charges and encumbrances of any kind or nature whatsoever, including any preemptive rights of any stockholder of Issuer. 6. REPRESENTATIONS AND WARRANTIES OF GRANTEE. Grantee hereby represents and warrants to Issuer that: (a) Due Authorization. Grantee has all requisite corporate power and authority to enter into this Agreement and, subject to any approvals or consents referred to herein, to consummate the transactions contemplated hereby. The execution and delivery of this Agreement and the consummation of the transactions contemplated hereby have been duly authorized by all necessary corporate action on the part of Grantee. This Agreement has been duly executed and delivered by Grantee. (b) Purchase not for Distribution. This Option is not being, and any Option Shares or other securities acquired by Grantee upon exercise of the Option will not be, acquired with a view to the public distribution thereof and will not be transferred or otherwise disposed of except in a transaction registered or exempt from registration under the Securities Act. 4 5 7. ADJUSTMENT UPON CHANGES IN ISSUER CAPITALIZATION, ETC. (a) In the event of any change in Issuer Common Stock by reason of a stock dividend, stock split, split-up, recapitalization, combination, exchange of shares or similar transaction, the type and number of shares or securities subject to the Option, and the Purchase Price therefor, shall be adjusted appropriately, and proper provision shall be made in the agreements governing such transaction so that Holder shall receive, upon exercise of the Option, the number and class of shares or other securities or property that Holder would have received in respect of Issuer Common Stock if the Option had been exercised immediately prior to such event, or the record date therefor, as applicable. If any additional shares of Issuer Common Stock are issued after the date of this Agreement (other than pursuant to an event described in the first sentence of this subsection (a), upon exercise of any option to purchase Issuer Common Stock outstanding on the date hereof or upon conversion into Issuer Common Stock of any convertible security of Issuer outstanding on the date hereof), the number of shares of Issuer Common Stock subject to the Option shall be adjusted so that, after such issuance, it, together with any shares of Issuer Common Stock previously issued pursuant hereto, equals 19.9% of the number of shares of Issuer Common Stock then issued and outstanding, without giving effect to any shares subject to or issued pursuant to the Option. No provision of this Section 7 shall be deemed to affect or change, or constitute authorization for any violation of, any of the covenants or representations in the Plan. (b) In the event that Issuer shall enter in an agreement (i) to consolidate with or merge into any person, other than Grantee or one of its subsidiaries, and shall not be the continuing or surviving corporation of such consolidation or merger, (ii) to permit any person, other than Grantee or one of its subsidiaries, to merge into Issuer and Issuer shall be the continuing or surviving corporation, but, in connection with such merger, the then outstanding shares of Issuer Common Stock shall be changed into or exchanged for stock or other securities of Issuer or any other person or cash or any other property or the outstanding shares of Issuer Common Stock immediately prior to such merger shall after such merger represent less than 50% of the outstanding shares and share equivalents of the merged company, or (iii) to sell or otherwise transfer all or substantially all of its assets to any person, other than Grantee or one of its subsidiaries, then, and in each such case, the agreement governing such transaction shall make proper provisions so that the Option shall, upon the consummation of any such transaction and upon the terms and conditions set forth herein, be converted into, or exchanged for, an option (the "Substitute Option"), at the election of Holder, of either (x) the Acquiring Corporation (as hereinafter defined), (y) any person that controls the Acquiring Corporation, or (z) in the case of a merger described in clause (ii), Issuer (such person being referred to as "Substitute Option Issuer"). (c) The Substitute Option shall have the same terms as the Option, provided, that, if the terms of the Substitute Option cannot, for legal reasons, be the same as the Option, such terms shall be as similar as possible and in no event less advantageous to Holder. Substitute Option Issuer shall also enter into an agreement with Holder in substantially the same form as this Agreement, which shall be applicable to the Substitute Option. (d) The Substitute Option shall be exercisable for such number of shares of Substitute Common Stock (as hereinafter defined) as is equal to the Assigned Value (as hereinafter defined) multiplied by the number of shares of Issuer Common Stock for which the Option was theretofore exercisable, divided by the Average Price (as hereinafter defined). The exercise price of Substitute Option per share of Substitute Common Stock (the "Substitute Option Price") shall then be equal to the Option Price multiplied by a fraction in which the numerator is the number of shares of Issuer Common Stock for which the Option was theretofore exercisable and the denominator is the number of shares of the Substitute Common Stock for which the Substitute Option is exercisable. (e) The following terms have the meanings indicated: (1) "Acquiring Corporation" shall mean (i) the continuing or surviving corporation of a consolidation or merger with Issuer (if other than Issuer), (ii) Issuer in a merger in which Issuer is the continuing or surviving person, or (iii) 5 6 the transferee of all or substantially all of Issuer's assets (or a substantial part of the assets of its subsidiaries taken as a whole). (2) "Substitute Common Stock" shall mean the common stock issued by Substitute Option Issuer upon exercise of the Substitute Option. (3) "Assigned Value" shall mean the highest of (x) the price per share of Issuer Common Stock at which a Tender Offer or an Exchange Offer therefor has been made, (y) the price per share of Issuer Common Stock to be paid by any third party pursuant to an agreement with Issuer, and (z) the highest per share closing price for shares of Issuer Common Stock within the six-month period immediately preceding the consolidation, merger, or sale in question. In the event that a Tender Offer or an Exchange Offer is made for Issuer Common Stock or an agreement is entered into for a merger or consolidation involving consideration other than cash, the value of the securities or other property issuable or deliverable in exchange for Issuer Common Stock shall be determined by a nationally recognized investment banking firm selected by Holder or Owner, as the case may be (and if there are both a Holder and an Owner, the Holder). (4) "Average Price" shall mean the average closing price per share of Substitute Common Stock for the one year immediately preceding the consolidation, merger, or sale in question, but in no event higher than the closing price of the shares of Substitute Common Stock on the day preceding such consolidation, merger or sale; provided that if Issuer is the issuer of the Substitute Option, the Average Price shall be computed with respect to a share of common stock issued by Issuer, the person merging into Issuer or by any company which controls such person, as Holder may elect. (f) In no event, pursuant to any of the foregoing paragraphs, shall the Substitute Option be exercisable for more than 19.9% of the aggregate of the shares of Substitute Common Stock outstanding prior to exercise of the Substitute Option. In the event that the Substitute Option would be exercisable for more than 19.9% of the aggregate of the shares of Substitute Common Stock but for the limitation in the first sentence of this subsection (f), Substitute Option Issuer shall make a cash payment to Holder equal to the excess of (i) the value of the Substitute Option without giving effect to the limitation in the first sentence of this subsection (f) over (ii) the value of the Substitute Option after giving effect to the limitation in the first sentence of this subsection (f). This difference in value shall be determined by a nationally-recognized investment banking firm selected by Holder. (g) Issuer shall not enter into any transaction described in subsection (b) of this Section 7 unless the Acquiring Corporation and any person that controls the Acquiring Corporation assume in writing all the obligations of Issuer hereunder and take all other actions that may be necessary so that the provisions of this Section 7 are given full force and effect (including, without limitation, any action that may be necessary so that the holders of the other shares of common stock issued by Substitute Option Issuer are not entitled to exercise any rights by reason of the issuance or exercise of the Substitute Option and the shares of Substitute Common Stock are otherwise in no way distinguishable from or have lesser economic value (other than any dimunition in value resulting from the fact that the Substitute Common Stock are restricted securities, as defined in Rule 144 under the Securities Act) than other shares of common stock issued by Substitute Option Issuer). 8. REGISTRATION RIGHTS. (a) Demand Registration Rights. Issuer shall, subject to the conditions of subparagraph (c) below, if requested by any Holder or Owner, as applicable, including Grantee and any permitted transferee ("Selling Shareholder"), as expeditiously as possible prepare and file a registration statement under the Securities Act if such 6 7 registration is necessary in order to permit the sale or other disposition of any or all shares of Issuer Common Stock or other securities that have been acquired by or are issuable to the Selling Shareholder upon exercise of the Option in accordance with the intended method of sale or other disposition stated by the Selling Shareholder in such request, including without limitation a "shelf" registration statement under Rule 415 under the Securities Act or any successor provision, and Issuer shall use its best efforts to qualify such shares or other securities for sale under any applicable state securities laws. Grantee shall have the right to demand no more than two registrations pursuant to this paragraph. If requested by Grantee in connection with any such registration, Issuer and Grantee shall provide each other with representatives, warranties, indemnities and other agreements customarily given in connection with such registration. If requested by Grantee in connection with any such registration, Issuer and Grantee shall become party to any underwriting agreement relating to the sale of the Option Shares, but only to the extent of obligating themselves in respect of representations, warranties, indemnities and other agreement customarily included in such underwriting agreements. (b) Additional Registration Rights. If Issuer at any time after the exercise of the Option proposes to register any shares of Issuer Common Stock under the Securities Act in connection with an underwritten public offering of such Issuer Common Stock, Issuer will promptly give written notice to the Selling Shareholders of its intention to do so and, upon the written request of any Selling Shareholder given within 30 days after receipt of any such notice (which request shall specify the number of shares of Issuer Common Stock intended to be included in such underwritten public offering by the Selling Shareholder), Issuer will cause all such shares for which a Selling Shareholder requests participation in such registration, to be so registered and included in such underwritten public offering; PROVIDED, HOWEVER, that Issuer may elect to not cause any such shares to be so registered (i) if the underwriters in good faith object for valid business reasons, or (ii) in the case of a registration solely to implement an employee benefit plan or a registration filed on Form S-4; PROVIDED, FURTHER, HOWEVER, that such election pursuant to (i) may only be made two times. If some but not all the shares of Issuer Common Stock, with respect to which Issuer shall have received requests for registration pursuant to this subsection (b) shall be excluded from such registration, Issuer shall make appropriate allocation of shares to be registered among the Selling Shareholders desiring to register their shares pro rata in the proportion that the number of shares requested to be registered by each such Selling Shareholder bears to the total number of shares requested to be registered by all such Selling Shareholders then desiring to have Issuer Common Stock registered for sale. (c) Conditions to Required Registration. Issuer shall use all reasonable efforts to cause each registration statement referred to in subparagraph (a) above to become effective and to obtain all consents or waivers of other parties which are required therefor and to keep such registration statement effective, PROVIDED, HOWEVER, that Issuer may delay any registration of Option Shares required pursuant to subparagraph (a) above for a period not exceeding 180 days provided Issuer shall in good faith determine that any such registration would adversely affect an offering or contemplated offering of other securities by Issuer, and Issuer shall not be required to register Option Shares under the Securities Act pursuant to subsection (a) above: (i) prior to the earliest of (a) termination of the Plan pursuant to Article VII thereof, (b) failure to obtain the requisite stockholder approval pursuant to Section 6.1.(A) of the Plan, and (c) a Purchase Event or a Preliminary Purchase Event; (ii) on more than one occasion during any calendar year; (iii) within 90 days after the effective date of a registration referred to in subsection (b) above pursuant to which the Selling Shareholder or Selling Shareholders concerned were afforded the opportunity to register such shares under the Securities Act and such shares were registered as requested; and (iv) unless a request therefor is made to Issuer by Selling Shareholders that hold at least 25% or more of the aggregate number of Option Shares (including shares of Issuer Common Stock issuable upon exercise of the Option) then outstanding. 7 8 In addition to the foregoing, Issuer shall not be required to maintain the effectiveness of any registration statement after the expiration of nine months from the effective date of such registration statement. Issuer shall use all reasonable efforts to make any filings, and take all steps, under all applicable state securities laws to the extent necessary to permit the sale or other disposition of the Option Shares so registered in accordance with the intended method of distribution for such shares, PROVIDED, HOWEVER, that Issuer shall not be required to consent to general jurisdiction or qualify to do business in any state where it is not otherwise required to so consent to such jurisdiction or to so qualify to do business. (d) Expenses. Except where applicable state law prohibits such payments, Issuer will pay all expenses (including without limitation registration fees, qualification fees, blue sky fees and expenses (including the fees and expenses of counsel), legal expenses, including the reasonable fees and expenses of one counsel to the holders whose Option Shares are being registered, printing expenses and the costs of special audits or "cold comfort" letters, expenses of underwriters, excluding discounts and commissions but including liability insurance if Issuer so desires or the underwriters so require, and the reasonable fees and expenses of any necessary special experts) in connection with each registration pursuant to subsection (a) or (b) above (including the related offerings and sales by holders of Option Shares) and all other qualifications, notifications or exemptions pursuant to subsection (a) or (b) above. (e) Miscellaneous Reporting. Issuer shall comply with all reporting requirements and will do all such other things as may be necessary to permit the expeditious sale at any time of any Option Shares by the Selling Shareholders thereof in accordance with and to the extent permitted by any rule or regulation promulgated by the SEC from time to time, including, without limitation, Rule 144A. Issuer shall at its expense provide the Selling Shareholders with any information necessary in connection with the completion and filing of any reports or forms required to be filed by them under the Securities Act or the Exchange Act, or required pursuant to any state securities laws or the rules of any stock exchange. (f) Issuer Taxes. Issuer will pay all stamp taxes in connection with the issuance and the sale of the Option Shares and in connection with the exercise of the Option, and will save the Selling Shareholders harmless, without limitation as to time, against any and all liabilities, with respect to all such taxes. 9. QUOTATION; LISTING. If Issuer Common Stock or any other securities to be acquired in connection with the exercise of the Option are then authorized for quotation or trading or listing on the NASDAQ National Market or any securities exchange, Issuer, upon the request of Holder, will promptly file an application, if required, to authorize for quotation or trading or listing the shares of Issuer Common Stock or other securities to be acquired upon exercise of the Option on the NASDAQ National Market or such other securities exchange and will use its best efforts to obtain approval, if required, of such quotation or listing as soon as practicable. 10. DIVISION OF OPTION. This Agreement (and the Option granted hereby) are exchangeable, without expense, at the option of Holder, upon presentation and surrender of this Agreement at the principal office of Issuer for other Agreements providing for Options of different denominations entitling the holder thereof to purchase in the aggregate the same number of shares of Issuer Common Stock purchasable hereunder. The terms "Agreement" and "Option" as used herein include any other Agreements and related Options for which this Agreement (and the Option granted hereby) may be exchanged. Upon receipt by Issuer of evidence reasonably satisfactory to it of the loss, theft, destruction or mutilation of this Agreement, and (in the case of loss, theft or destruction) of reasonably satisfactory indemnification, and upon surrender and cancellation of this Agreement, if mutilated, Issuer will execute and deliver a new Agreement of like tenor and date. Any such new Agreement executed and delivered shall constitute an additional contractual obligation on the part of Issuer, whether or not the Agreement so lost, stolen, destroyed or mutilated shall at any time be enforceable by anyone. 8 9 11. MISCELLANEOUS. (a) Expenses. Each of the parties hereto shall bear and pay all costs and expenses incurred by it or on its behalf in connection with the transactions contemplated hereunder, including fees and expenses of its own financial consultants, investment bankers, accountants and counsel. (b) Waiver and Amendment. Any provision of this Agreement may be waived at any time by the party that is entitled to the benefits of such provision. This Agreement may not be modified, amended, altered or supplemented except upon the execution and delivery of a written agreement executed by the parties hereto. (c) Entire Agreement: no Third-party Beneficiary; Severability. This Agreement, together with the Plan and the other documents and instruments referred to herein and therein, between Grantee and Issuer (a) constitutes the entire agreement and supersedes all prior agreements and understandings, both written and oral, between the parties with respect to the subject matter hereof and (b) is not intended to confer upon any person other than the parties hereto (other than any transferees of the Option Shares or any permitted transferee of this Agreement pursuant to subsection (h) of this Section 14) any rights or remedies hereunder. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction or a federal or state regulatory agency to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions of this Agreement shall remain in full force and effect and shall in no way be affected, impaired or invalidated. If for any reason such court or regulatory agency determines that the Option does not permit Holder or Owner to acquire, or does not require Issuer to repurchase, the full number of shares of Issuer Common Stock as provided in Section 3 (as adjusted pursuant to Section 7), it is the express intention of Issuer to allow Holder or Owner to acquire or to require Issuer to repurchase such lesser number of shares as may be permissible without any amendment or modification hereof. (d) Governing Law. This Agreement shall be governed and construed in accordance with the laws of the State of Washington without regard to any applicable conflicts of law rules. (e) Descriptive Headings. The descriptive headings contained herein are for convenience of reference only and shall not affect in any way the meaning or interpretation of this Agreement. (f) Notices. All notices and other communications hereunder shall be in writing and shall be deemed given if delivered personally, telecopied (with confirmation) or mailed by registered or certified mail (return receipt requested) to the parties at the following addresses (or at such other address for a party as shall be specified by like notice): if to Grantee: InterWest Bancorp, Inc. 1259 West Pioneer Way Oak Harbor, Washington 98277 Attn: Stephen M. Walden with a copy to: Edward C. Beeksma Zylstra, Beeksma, Waller and Skinner 3101-300 Avenue West Oak Harbor, Washington 98277 and to: John F. Breyer, Jr. Breyer & Aguggia 1300 I Street Suite 470 East Washington, D.C. 20005 9 10 if to Issuer to: Central Bancorporation 301 N. Chelan Wenatchee, Washington 98801 with a copy to: Stephen M. Klein Graham & Dunn 33rd Floor 1420 Fifth Avenue Seattle, Washington 98101 (g) Counterparts. This Agreement and any amendments hereto may be executed in two counterparts, each of which shall be considered one and the same agreement and shall become effective when both counterparts have been signed, it being understood that both parties need not sign the same counterpart. (h) Assignment. Neither this Agreement nor any of the rights, interests or obligations hereunder or under the Option shall be assigned by any of the parties hereto (whether by operation of law or otherwise) without the prior written consent of the other party, except that Holder may assign this Agreement to a wholly-owned subsidiary of Holder and Holder may assign its rights hereunder in whole or in part after the occurrence of a Purchase Event. Subject to the preceding sentence, this Agreement shall be binding upon, inure to the benefit of and be enforceable by the parties and their respective successors and assigns. (i) Further Assurances. In the event of any exercise of the Option by the Holder, Issuer and the Holder shall execute and deliver all other documents and instruments and take all other action that may be reasonably necessary in order to consummate the transactions provided for by such exercise. (j) Specific Performance. The parties hereto agree that this Agreement may be enforced by either party through specific performance, injunctive relief and other equitable relief. Both parties further agree to waive any requirement for the securing or posting of any bond in connection with the obtaining of any such equitable relief and that this provision is without prejudice to any other rights that the parties hereto may have for any failure to perform this Agreement. IN WITNESS WHEREOF, Issuer and Grantee have caused this Stock Option Agreement to be signed by their respective officers thereunto duly authorized, all as of the day and year first written above. CENTRAL BANCORPORATION By: ------------------------------------- NAME: ____________________ TITLE: PRESIDENT AND CHIEF EXECUTIVE OFFICER INTERWEST BANCORP, INC. By: ------------------------------------ NAME: STEPHEN M. WALDEN TITLE: PRESIDENT AND CHIEF EXECUTIVE OFFICER 10