SHAREHOLDERS AGREEMENT

TABLE OF CONTENTS

SHAREHOLDERS AGREEMENT

AFFILIATES INSURANCE COMPANY

This Shareholders Agreement (this “ Agreement ”), dated February 27, 2009, by and among Affiliates Insurance Company, a company being formed and licensed as an insurance company in the State of Indiana (the “ Company ”), Five Star Quality Care, Inc., a Maryland corporation (“ FVE ”), Hospitality Properties Trust, a Maryland real estate investment trust (“ HPT ”), HRPT Properties Trust, a Maryland real estate investment trust (“ HRP ”), Senior Housing Properties Trust, a Maryland real estate investment trust (“ SNH ”), TravelCenters of America LLC, a Delaware limited liability company (“ TA ”), and Reit Management & Research LLC, a Delaware limited liability company (“ RMR ”, and together with FVE, HPT, HRP, SNH and TA, the “ Shareholders ”).

RECITALS

WHEREAS, the Company has been formed as an insurance company domiciled in the State of Indiana; and

WHEREAS, the Shareholders have agreed to make capital contributions to the Company as further detailed in this Agreement and that as of the funding of those capital contributions as provided in this Agreement the Shareholders will be the sole shareholders of the Company; and

WHEREAS, the Shareholders and the Company desire to enter into this Agreement in order to set forth certain agreements and understandings relating to the business and governance of the Company, the Shares (as defined herein) held by the Shareholders and certain other matters;

NOW, THEREFORE, in consideration of the premises, representations, warranties, covenants and agreements contained in this Agreement and of other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, hereby agree as follows:

ARTICLE I

INVESTMENT IN THE COMPANY; FORMATION AND LICENSING EXPENSES

1.1           Purchase and Sale of Shares .

(a)        Concurrently with the execution and delivery of this Agreement by the Company and the Shareholders, the Company shall issue and sell to each Shareholder, and each Shareholder shall purchase from the Company, 100 shares of common stock, par value of $10.00 per share, of the Company (the “ Shares ”) at a purchase price of $250.00 per Share.

(b)        Within five business days after the Company notifies the Shareholders that the Department of Insurance of the State of Indiana has notified the Company that it intends to commence its financial review of the Company, the Company shall issue and sell to each Shareholder, and each Shareholder shall purchase from the Company, an additional 19,900 Shares at a purchase price of $250.00 per Share.

1.2           Future Share Issuances .  No Shareholder shall be obligated to purchase additional Shares or any other securities of the Company and any future proposed issuance and sale of Shares or any other securities of the Company shall be subject to Section 3.2; provided, however, that the parties hereto acknowledge that the Company may need to seek additional capital in the future and that it is the intention of the Shareholders that they each may, but shall not be obligated to, contribute to the Company up to an additional $5 million of capital during the period between the second and fifth anniversaries of the date of this Agreement.

1.3           Formation and Licensing Expenses .  The Company shall pay for all costs, fees and expenses in connection with the formation and licensing of the Company as an Indiana insurance company.  The Shareholders shall reimburse the Company for such amounts paid by the Company in equal proportion.

ARTICLE II

BOARD COMPOSITION

2.1           Board Composition .

(a)        For as long as the Shareholders collectively own a majority of the issued and outstanding Shares, the board of directors of the Company (the “ Board ”) shall consist of not less than five nor more than fifteen members, with the actual number determined in accordance with the Bylaws of the Company, as in effect from time to time, and subject in all instances to this Section 2.1.  As of the date of this Agreement, the Board shall initially consist of thirteen members.  For so long as required by applicable Indiana law, at least one member of the Board shall be an Indiana resident.  Except as otherwise provided in Section 2.1(c), no Shareholder having a right to designate any director pursuant to this Article II shall be required to designate an Indiana resident as a director pursuant to such right; provided, however, that this sentence shall in no way limit the application of the immediately preceding sentence.

(b)        For so long as a Shareholder (other than RMR) owns not less than 10% of the issued and outstanding Shares, such Shareholder shall have the right to designate two directors for election to the Board.

(c)        For so long as RMR owns not less than 10% of the issued and outstanding Shares, RMR shall have the right to designate three directors for election to the

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Board.  For so long as RMR has the right to designate directors pursuant to the immediately preceding sentence, Indiana law requires the Board to include an Indiana resident as a director of the Company and no other Shareholder designates an Indiana resident as a director of the Company, RMR shall designate at least one Indiana resident to be a director.

(d)        Each Shareholder will vote, execute and deliver written consents and take all other necessary action (including, if necessary, causing the Company to call a special meeting of shareholders of the Company) in favor of the election of each director designated by a Shareholder in accordance with this Article II and otherwise to ensure that the composition of the Board is at all times as set forth in this Article II.  Each Shareholder agrees that it will not vote any of its Shares in favor of removal of any director designated by another Shareholder unless such other Shareholder shall have consented to such removal in writing.  Each Shareholder agrees to cause to be called, if necessary, a special meeting of shareholders of the Company and to vote all the Shares owned by such Shareholder for, or to take all actions in lieu of any such meeting necessary to cause, the removal of any director designated by such Shareholder if the Shareholder entitled to designate such director requests in writing, signed by such Shareholder, such director’s removal for any reason or no reason.

(e)        If, as a result of death, disability, retirement, resignation, removal or otherwise, there shall exist or occur any vacancy with respect to any director previously designated by a Shareholder in accordance with such Shareholder’s right under this Article II to so designate such director, such Shareholder shall have the right to designate a replacement director.  Upon such designation, the Shareholders shall promptly take all action necessary to ensure the election of such replacement director to fill the unexpired term of the director whom such new director is replacing, including, if necessary, calling a special meeting of shareholders of the Company and voting their Shares, or executing any written consent in lieu thereof, in favor of the election of such director.

ARTICLE III

TRANSFER OF SHARES;

PREEMPTIVE RIGHTS; CALL RIGHTS

3.1           Transfer of Shares; No Pledging of Shares .

(a)        The Shareholders may not, directly or indirectly, transfer any Shares, except that a Shareholder may transfer Shares owned by it to a wholly owned subsidiary of such Shareholder, to another Shareholder or to a wholly owned subsidiary of another Shareholder.  Any purported transfer of Shares in contravention of this Section 3.1 shall be null and void and of no force or effect.

(b)        The Shareholders may not pledge their Shares (other than pledges arising from the operation of law and not as a result of the Shareholder’s express granting of a pledge); provided, however, that any pledge or other lien, charge or encumbrance which may arise by application of the terms of any agreement, contract, license, permit or instrument existing on the date hereof (an “ Existing Pledge ”) on a Shareholder’s Shares shall not be a

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violation of this Section 3.1(b); and provided further, however, any transfer which results from exercise of rights under a permitted lien, charge or encumbrance shall be subject to the call rights of the Company and the other Shareholders set forth in Section 3.3 to the fullest extent permitted by applicable law and existing contracts as if such a transfer constitutes a “Change of Control”.  Any Shareholder whose Shares would be subject to an Existing Pledge shall use best efforts to cause the pledgee under an Existing Pledge, prior to any exercise by the pledgee of its rights on the Shareholder’s Shares, to take all actions under applicable law which are required to be taken prior to any such exercise, including obtaining any necessary approvals from the Indiana Department of Insurance and Indiana Insurance Commissioner.

3.2           Preemptive Rights .

(a)        If, at any time after the date hereof, the Company wishes to issue any capital stock of the Company or any other securities convertible into or exchangeable or exercisable for capital stock of the Company (collectively, “ New Securities ”) to any person or entity (the “ Subject Purchaser ”), then the Company shall first offer the Appropriate Percentage (as defined herein) of the New Securities (the “ Allocated Shares ”) to each Shareholder (each, a “ Preemptive Rightholder ” and collectively, the “ Preemptive Rightholders ”) by sending written notice (the “ New Issuance Notice ”) to each of the Preemptive Rightholders, which New Issuance Notice shall state the terms of such proposed issuance, including the number of New Securities proposed to be issued and the proposed purchase price per security of the New Securities (the “ Proposed Price ”).  Upon delivery of the New Issuance Notice, such offer shall be irrevocable unless and until the Company shall have terminated the contemplated issuance of New Securities in its entirety at which time the rights set forth herein shall be applicable to any proposed issuance subsequent to any such termination.  For purposes of this Section 3.2, “ Appropriate Percentage ” shall mean that percentage of the New Securities determined by dividing (i) the total number of Shares then owned by a Preemptive Rightholder by (ii) the total number of Shares owned by all the Preemptive Rightholders.

(b)        For a period of 20 days after the giving of the New Issuance Notice pursuant to Section 3.2(a) (the “ Initial Preemptive Subscription Period ”), each of the Preemptive Rightholders shall have the right to purchase, in whole or in part, the Allocated Shares offered to such Preemptive Rightholder as determined pursuant to Section 3.2(a) at a purchase price equal to the Proposed Price and upon the terms and conditions set forth in the New Issuance Notice.

(c)        The right of each Preemptive Rightholder to purchase the New Securities so offered under Section 3.2(b) shall be exercisable by delivering written notice of the exercise thereof, prior to the expiration of the Initial Preemptive Subscription Period, to the Company, which notice shall state the amount of New Securities that such Preemptive Rightholder elects to purchase pursuant to Section 3.2(a).  The failure of a Preemptive Rightholder to respond prior to the expiration of the Initial Preemptive Subscription Period shall be deemed to be a waiver of such Preemptive Rightholder’s rights under this Agreement solely with respect to its right to purchase the New Securities referenced in the New Issuance Notice; provided that each Preemptive Rightholder may waive its rights under Section 3.2(b) prior to the expiration of Initial Preemptive Subscription Period by giving written notice of such waiver to the Company.

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(d)        If as of the expiration of the Initial Preemptive Subscription Period, some but not all of the Preemptive Rightholders have exercised their right to purchase the full amount of New Securities to which they are entitled to purchase pursuant to Sections 3.2(b) and (c) (any such Preemptive Rightholder which has exercised in full its rights to purchase such New Securities, a “ Fully Exercising Preemptive Rightholder ”), the Fully Exercising Preemptive Rightholders shall have the right to purchase, in whole or in part, their Oversubscription Appropriate Percentage (as defined herein) of the New Securities which the Preemptive Rightholders did not exercise their right to purchase pursuant to Sections 3.2(b) and (c) (the “ Undersubscribed Shares ”) at a purchase price equal to the Proposed Price and upon the terms and conditions set forth in the New Issuance Notice.  The right of the Fully Exercising Preemptive Rightholders to purchase the Undersubscribed Shares may be exercised for a period of ten days following the earlier of the expiration of the Initial Preemptive Subscription Period or the date on which notice is given by the Company to such Fully Exercising Preemptive Rightholders that all the Preemptive Rightholders have either exercised their right to purchase the New Securities pursuant to Sections 3.2(b) and (c) or waived their rights to purchase any of such New Securities pursuant to Section 3.2(c) (the “ Oversubscription Period ”).  For purposes of this Section 3.2, “ Oversubscription Appropriate Percentage ” shall mean that percentage of the Undersubscribed Shares determined by dividing (i) the total number of Shares then owned by a Fully Exercising Preemptive Rightholder by (ii) the total number of Shares owned by all the Fully Exercising Preemptive Rightholders.

(e)        The right of each Fully Exercising Preemptive Rightholder to purchase Undersubscribed Shares pursuant to Section 3.2(d) shall be exercisable by delivering written notice of the exercise thereof, prior to the expiration of the Oversubscription Period, to the Company, which notice shall state the amount of Undersubscribed Shares that such Fully Exercising Preemptive Rightholder elects to purchase pursuant to Section 3.2(d).  The failure of a Fully Exercising Preemptive Rightholder to respond prior to the expiration of the Oversubscription Period shall be deemed to be a waiver of such Fully Exercising Preemptive Rightholder’s rights under this Agreement solely with respect to its right to purchase the Undersubscribed Shares included in the New Securities referenced in the New Issuance Notice; provided that each Fully Exercising Preemptive Rightholder may waive its rights under Section 3.2(d) prior to the expiration of Oversubscription Period by giving written notice of such waiver to the Company.

(f)         The closing of the purchase of New Securities subscribed for by the Preemptive Rightholders, including the Fully Exercising Preemptive Rightholders, pursuant to this Section 3.2 shall be held at such time and place as the parties to the transaction may reasonably agree.  At such closing, the New Securities subscribed for shall be issued by the Company free and clear of all liens, charges or encumbrances (other than those arising hereunder and those attributable to actions by the purchasers thereof).  Each Preemptive Rightholder, including each Fully Exercising Preemptive Rightholder, purchasing the New Securities shall deliver at the closing payment in full in immediately available funds for the New Securities purchased by it.  At such closing, all of the parties to the transaction shall execute such additional documents as are otherwise necessary, appropriate or customary for similar financing transactions.  If any Preemptive Rightholder, including any Fully Exercising Preemptive Rightholder, fails to purchase any New Securities for which it exercised its right to purchase pursuant to Sections 3.2(b) and (c) or 3.2(d) and (e), such New Securities may be purchased by

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the Fully Exercising Preemptive Rightholders which did purchase all the New Securities for which they exercised their rights to purchase pursuant to Sections 3.2(b), (c), (d) and (e) in the same manner provided in this Section 3.2 with respect to Undersubscribed Shares and the resulting Oversubscription Period with respect to such right to purchase shall be an “Oversubscription Period” for all instances such term is used in this Section 3.2.  Notwithstanding the preceding sentence, the obligations and liability of any Preemptive Rightholder, including any Fully Exercising Preemptive Rightholder, which fails to purchase any New Securities for which it exercised its right to purchase pursuant to Sections 3.2(b) and (c) or 3.2(d) and (e) shall not be relieved as a result of any Fully Exercising Preemptive Rightholder’s right to purchase, or any actual purchase by any Fully Exercising Preemptive Rightholder of, any such New Securities.

(g)        Following the expiration of the later of the Initial Preemptive Subscription Period and, if applicable, the Oversubscription Period, if the Preemptive Rightholders, including any Fully Exercising Preemptive Rightholders, did not exercise their right to purchase any of the New Securities, including the Undersubscribed Shares, which were originally the subject of the New Issuance Notice, then the Company may sell the remaining New Securities to the Subject Purchaser on terms and conditions that are no more favorable to the Subject Purchaser than those set forth in the New Issuance Notice; provided, however, that such sale is bona fide and made pursuant to a contract entered into between the Company and the Subject Purchaser and that such sale is consummated by not later than 90 days following the earlier to occur of (i) receipt by the Company of written waivers pursuant to Section 3.2(c) from all the Preemptive Rightholders of their rights to purchase the Appropriate Percentage of New Securities and, if applicable, written waivers pursuant to Section 3.2(e) from all the Fully Exercising Preemptive Rightholders of their rights to purchase the Oversubscription Appropriate Percentage of New Securities, and (ii) the expiration of the Oversubscription Period, if applicable, and if not applicable, the expiration of the Initial Preemptive Subscription Period.  If the sale of any of the New Securities is not consummated by the expiration of such 90 day period, then the preemptive rights afforded to the Shareholders under this Section 3.2 shall again become effective, and no issuance and sale of New Securities may be made thereafter by the Company without again offering the same in accordance with this Section 3.2.

3.3           Change of Control Call Option .

(a)        By not later than five days following a Change of Control (as defined herein or in Section 3.1(b)) of any Shareholder, such Shareholder shall give the Company and each other Shareholder notice of such Change of Control and shall disclose the number of Shares and any other securities of the Company which were owned by the Shareholder as of immediately prior to such Change of Control of such Shareholder (the “ Change of Control Securities ”).  If the Shareholder fails to give the notice required by the preceding sentence by the time required thereby, and another Shareholder or the Company is or becomes aware that such Shareholder underwent a Change of Control, then (i) if it is a Shareholder that is or becomes aware of such Change of Control, that Shareholder shall reasonably promptly inform the Company of such Change of Control and upon the Company being of the reasonable belief that such a Change of Control has occurred, the Company shall reasonably promptly provide the notice to the Shareholders that such Shareholder which underwent the Change of Control failed to provide, or (ii) if it is the Company that is or becomes

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multiplied by the quotient of (x) the number of Shares owned by all eligible Shareholders which are exercising their call option rights minus the number of Shares owned by the particular applicable exercising Shareholder divided by (y) the number of Shares owned by all eligible Shareholders which are exercising their call option rights, with any such result rounded up or down to the nearest whole share as reasonably determined by the Company.  The closing of any such exercised call option shall occur on the fifth business day (or such