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                                                                 EXHIBIT 10.22

WHENEVER CONFIDENTIAL INFORMATION IS OMITTED HEREIN (SUCH OMISSIONS ARE DENOTED
BY AN ASTERISK*), SUCH CONFIDENTIAL INFORMATION HAS BEEN SUBMITTED SEPARATELY TO
THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT.

                               FIRST AMENDMENT TO
                   TECHNOLOGY ALLIANCE AND OPTION AGREEMENT

         This First Amendment to Technology Alliance and Option Agreement
(this "Amendment") dated as of September 8, 2005 (the "Effective Date") is by
and between ADM Polymer Corporation, a corporation duly incorporated and
validly existing under the laws of the State of Delaware, with headquarters
located at 4666 Faries Parkway, Decatur, IL 62526 ("ADM Sub"), and Metabolix,
Inc., a corporation duly incorporated and validly existing under the laws of
the State of Delaware, with headquarters located at 21 Erie Street,
Cambridge, MA 02139-4260 ("MBX") (MBX and ADM Sub are collectively the
"Parties" and each is a "Party").

                                    RECITALS

         WHEREAS, MBX and ADM Sub entered into that certain Technology Alliance
and Option Agreement dated as of November 4, 2004 (the "Agreement"); and

         WHEREAS, MBX and ADM Sub now desire to modify the terms of the
Agreement as set forth herein.

         NOW, THEREFORE, in consideration of the recitals and the mutual
covenants and promises contained herein, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
Parties hereto do hereby agree as follows:

                                    ARTICLE 1
                                   DEFINITIONS

         1.1 DEFINITIONS. Capitalized terms used but not defined herein shall
have the meaning ascribed to them in the Agreement.

                                    ARTICLE 2
                        AMENDMENTS AND ADDITIONS TO TERMS

         2.1 AMENDMENT TO ARTICLE 1. Article 1 of the Agreement is hereby
amended by deleting the existing definition for "Fermentation Performance
Parameters" and replacing it with the following text:

                  "FERMENTATION PERFORMANCE PARAMETERS" means the various
         parameters for production of PHA Cell Paste through fermentation at the
         * scale as set forth on AMENDED EXHIBIT B.

* CONFIDENTIAL TREATMENT REQUESTED

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         2.2 AMENDMENT OF SECTION 3.1. The Agreement is hereby amended by
deleting the existing Section 3.1 in its entirety and replacing it with the
following text:

                  "3.1 GOAL OF TECHNOLOGY ALLIANCE PROGRAM. The goal of
         the Technology Alliance Program is to (i) produce PHA Cell Paste, in a
         fermenter having a capacity of approximately *, and at ADM Sub's option
         then in a fermenter having a capacity of approximately *, in all cases,
         in a manner and with results that meet the applicable Fermentation
         Performance Parameters; (ii) demonstrate recovery of PHA Material in a
         manner and with results that meet the Recovery Performance Parameters
         (the items listed in the foregoing "(i)" and "(ii)" collectively are
         the "Technical Aspects of the Goal"); and (iii) based upon the results
         of (i) and (ii) above, have ADM Sub develop and the TAC agree upon a
         completed master plan for Construction of the ADM Sub Manufacturing
         Facility, including without limitation, surveys, blueprints, and
         engineering studies, which master plan shall be organized into a
         detailed, multiphase process for undertaking and completing
         Construction of the ADM Sub Manufacturing Facility and which shall have
         a project budget with projected detailed expenditures provided for each
         phase of the Construction process, all of which shall be, in form and
         substance, suitable for ADM Sub's management and board of directors to
         make a determination to approve the expenditures for the ADM Sub
         Manufacturing Facility as and to the extent required by ADM Sub's
         corporate governance polices and procedures (the "ADM Sub Construction
         Master Plan and Budget") (collectively the "Goal"). Successful
         completion of the Goal is intended to confirm the potential economics
         of producing PHA Material at commercial scale as part of a long-term
         commercial alliance."

         2.3 ADDITION OF SECTION 3.2.4.1. The Agreement is hereby amended by
adding the following Section 3.2.4.1:

                  "3.2.4.1 INITIAL RECOVERY OPERATIONS. The Parties hereby agree
         that MBX will enter into an agreement to obtain access to toll recovery
         services, from a Third Party (the "Toll Producer") on substantially the
         terms set forth in the tolling agreement attached hereto as Schedule A
         (the "Tolling Agreement"). These recovery services are anticipated to
         last until approximately March of 2006 and to result in the recovery of
         up to approximately thirty five (35) metric tons of PHA Material (the
         "Initial Recovery Services"). Except as specifically set forth herein,
         the Parties' rights and obligations with respect to the Initial
         Recovery Services and the PHA Material produced in connection therewith
         shall be governed by the Agreement as activities conducted under
         Section 3.2.4. Responsibility for the fees charged by the Toll Producer
         under the Tolling Agreement for the Initial Recovery Services, related
         equipment and capital expenses, and the reasonable out-of-pocket
         expenses of the Parties in performing technical support or auditing of
         the Initial Recovery Services, including, for example, travel and
         lodging expenses, but excluding, salary and benefits paid or payable to
         employees or representatives of the Parties participating in such
         activities (collectively, "Tolling Expenses") shall be shared equally
         by the Parties, subject to the limitations set forth herein. The
         Parties shall, determine reasonable

* CONFIDENTIAL TREATMENT REQUESTED

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         methods for promptly accounting for the total Tolling Expenses on a
         monthly basis and making such payments as are necessary in order to
         give effect to the equal sharing of the Tolling Expenses.
         Notwithstanding the foregoing: (i) MBX shall be solely responsible for
         the operating expenses (including its internal costs and the costs of
         the Toll Producer but excluding the related equipment and capital
         expenses) until (y) the earlier of TAC's determination that the
         recovery of PHA Material during a Recovery Campaign was achieved in a
         manner and with results that met the Recovery Performance Parameters as
         defined in Amended Exhibit E on any one of the three specified
         compositions, or ADM Sub's payment of the milestone payment set forth
         in Section 5.1 related to the Recovery Performance Parameters, and (z)
         ADM's receipt of a letter from the U.S. Drug Enforcement Administration
         advising that polyhydroxyalkanoate containing gamma-hydroybutyric acid
         as part of the polymer chain will not be regulated as a controlled
         substance under the Controlled Substances Act and any Drug Enforcement
         Administration regulations, (ii) ADM shall not be obligated to pay in
         excess of * of Tolling Expenses hereunder; (iii) ADM shall not be
         obligated to pay in excess of * of the equipment and capital expenses
         comprising the Tolling Expenses hereunder; and (iv) ADM shall not be
         responsible for any Tolling Expenses incurred after the end of the term
         of this Agreement as set forth in Section 8.1, except as otherwise
         provided under the Commercial Alliance Agreements, if applicable. In
         the event ADM terminates this Agreement or decides not to exercise the
         Option, then MBX shall pay ADM an amount equal to one half of the
         depreciated book value of any removable assets (i.e., not fixtures)
         that are listed on the Consignment Agreement or any Addendum to
         Consignment Agreement (as such agreement and such addendum are
         referenced in the Tolling Agreement), the purchase price for which was
         funded equally by the Parties. MBX agrees to provide ADM with equal
         access to the facility of the Toll Producer as and to the extent such
         access is made available to MBX and its designees under the Tolling
         Agreement. The PHA Material produced in connection with the Initial
         Recovery Services shall be part of the Technology Alliance Output or
         Marketing Material as determined under Section 3.3, and, in the event
         it is sold by MBX, all revenues generated by such sales shall be
         applied against Tolling Expenses before such expenses are allocated for
         payment by the Parties. The Parties agree to work together to determine
         the costs (capital expenditures and operating costs) to use ADM's
         Vitamin C facility for pilot sourcing of PHA Material in the event ADM
         exercises the Option; PROVIDED, HOWEVER, nothing herein shall preclude
         ADM from utilizing all or any portion of the Vitamin C facility for
         other uses."

         2.4 AMENDMENT OF SECTION 3.3. The Agreement is hereby amended by
deleting the existing Section 3.3 in its entirety and replacing it with the
following text:

                  "3.3 OUTPUT FROM TECHNOLOGY ALLIANCE PROGRAM. ADM Sub
         will use Commercially Reasonable Efforts to produce PHA Cell Paste in
         such amounts as result from the operations set forth in the Technology
         Alliance Plan until it has satisfied the Fermentation Performance
         Parameters (the "Technology Alliance Output") and such additional
         amounts thereafter as the Parties may agree to in

* CONFIDENTIAL TREATMENT REQUESTED

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         writing (the "Marketing Material") for use by MBX in developing the
         market for PHA Material. The Technology Alliance Output and the
         Marketing Material will be made available by ADM Sub to MBX as set
         forth in this Section 3.3."

         2.5 AMENDMENT OF SECTION 3.3.1. The Agreement is hereby amended by
deleting the existing Section 3.3.1 in its entirety and replacing it with the
following text:

                  "3.3.1 ANALYSIS OF TECHNOLOGY ALLIANCE OUTPUT. MBX
         will use the Technology Alliance Output to demonstrate recovery of PHA
         Material in accordance with Section 3.2.4 and the Technology Alliance
         Plan, and ADM shall provide the Technology Alliance Output to MBX as
         MBX may require to perform such recovery demonstration, including the
         Initial Recovery Services. Further, the Technology Alliance Output will
         be used by the Parties to perform such evaluation and analysis as is
         necessary or useful in determining whether the Parties have achieved
         the Goal. Without limiting the foregoing statement, the Technology
         Alliance Output will be evaluated and analyzed by the Parties, in
         accordance with the procedures and methods set forth in the Technology
         Alliance Plan, to determine whether the Technology Alliance Output
         meets the Fermentation Performance Parameters and whether PHA Material
         recovered from the Technology Alliance Output meets the Recovery
         Performance Parameters."

         2.6 AMENDMENT OF SECTION 3.3.2. The Agreement is hereby amended by
deleting the existing Section 3.3.2 in its entirety and replacing it with the
following text:

                  "3.3.2 PURCHASE OF TECHNOLOGY ALLIANCE OUTPUT BY MBX;
         COST SHARING FOR MARKETING MATERIAL. MBX shall have the right, but not
         the obligation, to purchase the Technology Alliance Output that is not
         required to perform the recovery demonstration described in Section
         3.3.1 above from ADM Sub at a price of * of PHA Material contained
         within the PHA Cell Paste, on a one hundred percent (100%) purity
         basis; provided such price shall be reduced to * at such times as ADM
         is responsible for equally sharing the Tolling Expenses (including the
         operating expenses) pursuant to Section 3.2.4.1. MBX shall purchase the
         Marketing Material, irrespective of whether the Marketing Material
         meets the applicable specifications or not, at fifty percent (50%) ADM
         Sub's Manufacturing Cost, F.O.B. Decatur, Illinois. MBX may exercise
         this purchase option at any time, and from time-to-time, during the
         Technology Alliance Program and up to thirty (30) days after the
         expiration or termination of the Technology Alliance Program, by
         written notice to ADM Sub, stating its desire to purchase, the quantity
         to be purchased (up to the total amount that is then available) and
         shipping and delivery instructions. ADM Sub shall invoice MBX for
         amounts so purchased no sooner than at the time of delivery and the
         purchase price for amounts ordered and delivered in accordance herewith
         shall be payable by MBX within thirty (30) days of receipt of an
         invoice from ADM Sub by wire transfer of immediately available funds to
         an account in the United States designated by ADM Sub. Technology
         Alliance Output and Marketing Material purchased hereunder shall be
         purchased "as is," without warranty of any kind other than that the
         Technology Alliance Output and Marketing Material shall have

* CONFIDENTIAL TREATMENT REQUESTED

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         been stored and handled, from the time of production until the delivery
         to MBX, in accordance with the requirements of the Technology Alliance
         Plan or as otherwise agreed by the Parties. Technology Alliance Output
         and Marketing Material purchased by MBX shall be used by MBX for
         performing its obligations pursuant to this Agreement and for market
         development activities benefiting the Parties and the potential
         Commercial Alliance between them. Technology Alliance Output that is
         not purchased by MBX shall be used by ADM Sub solely for internal
         research and development purposes, or if not so used, ADM Sub shall
         either store (for later sale to MBX or the Joint Sales Company or for
         later use by ADM Sub solely for internal research purposes) or dispose
         of the unused Technology Alliance Output, at ADM Sub's option."

         2.7 AMENDMENT OF SECTION 4.3. The Agreement is hereby amended by
deleting the existing Section 4.3 in its entirety and replacing it with the
following text:

                  "4.3 GRANT OF OPTION. MBX hereby grants to ADM Sub the right
         and option to enter into a commercial alliance for the further
         research, development, manufacture, use, sale and importation of the
         PHA Material and PHA Formulations on the terms and conditions set forth
         in the Commercial Alliance Agreements (the "Option"). The Option shall
         be exercisable by ADM Sub at any time after Effective Date and until
         thirty (30) days after the expiration of the term of this Agreement, by
         written notice to MBX; PROVIDED, HOWEVER, that, in either case, the
         Option shall not be exercisable if and for so long as ADM Sub is in
         breach of this Agreement. Following the exercise of the Option, the
         Parties shall promptly execute and deliver the Commercial Alliance
         Agreements in accordance with this Agreement."

         2.8 AMENDMENT OF SECTION 5.1. The Agreement is hereby amended by
deleting the existing Section 5.1 in its entirety and replacing it with the
following text:

                  "5.1 PAYMENTS. Within ten (10) days after the Effective Date,
         ADM Sub shall pay to MBX the amount of * as a non-refundable,
         non-creditable upfront payment. Within ten (10) days following the
         TAC's determination that the production of PHA Cell Paste in a
         fermenter having a capacity of approximately * was achieved in a manner
         and with results that met the applicable Fermentation Performance
         Parameters, ADM Sub shall pay to MBX the amount of * as a
         non-refundable, non-creditable milestone payment. Within ten (10) days
         following the TAC's determination that the recovery of PHA Material was
         achieved in a manner and with results that met the Recovery Performance
         Parameters, ADM Sub shall pay to MBX the amount of * as a
         non-refundable, non-creditable milestone payment. Within ten (10) days
         following the first to occur of: (i) the achievement of the Goal and
         (ii) the exercise of the Option by ADM Sub, ADM Sub shall pay to MBX
         the amount of * as a non-refundable, non-creditable milestone payment.
         Anything herein to the contrary notwithstanding, in the event that ADM
         Sub desires to exercise the Option in accordance with Section 4.3, the
         above-described upfront payment and the three (3) milestone payments,
         to the extent not already paid, shall be due and

* CONFIDENTIAL TREATMENT REQUESTED

<Page>

         payable in full as a pre-condition to the exercise of the Option.
         Amounts due under this Section 5.1 shall be payable by wire transfer of
         immediately available funds to an MBX bank account in accordance with
         instructions to be provided to ADM Sub by MBX."

         2.9 AMENDMENT OF SECTION 5.2. The Agreement is hereby amended by
deleting the existing Section 5.2 in its entirety and replacing it with the
following text:

                  "5.2 OTHER EXPENSES. Except as provided in Section 5.1,
         Section 3.2.4.1 and Section 3.3.2, each Party shall bear its own costs
         and expenses incurred in performing under this Agreement."

         2.10 AMENDMENT OF EXHIBITS. The Agreement is hereby amended by deleting
the existing Exhibit B and replacing it with the text set forth in Amended
Exhibit B attached hereto, by deleting existing Exhibit D and replacing it with
the text set forth in Amended Exhibit D attached hereto, and by deleting the
existing Exhibit E and replacing it with the text set forth in Amended Exhibit E
attached hereto.

                                    ARTICLE 3
                              CONFIRMATION OF TERMS

         3.1 CONFIRMATION OF TERMS. This Amendment shall be a part of the
Agreement and shall be governed in accordance with the terms and conditions set
forth therein, as the same are amended hereby, including without limitation, the
terms and conditions set forth in Article XI of the Agreement, entitled
"Miscellaneous." The Parties hereby agree and acknowledge that, except as
expressly set forth herein, the Agreement shall remain in full force and effect
in accordance with its terms.

* CONFIDENTIAL TREATMENT REQUESTED

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         IN WITNESS WHEREOF, the Parties hereto have caused this Amendment to be
executed by their duly authorized representatives as of the day and year above
written.

                                       ADM POLYMER CORPORATION

                                       By: /s/ JOHN D. RICE
                                           ------------------------------------
                                       Name:  John D. Rice
                                       Title: President

                                       METABOLIX, INC.

                                       By: /s/ JAMES J. BARBER
                                           ------------------------------------
                                       Name:  James J. Barber
                                       Title: President

* CONFIDENTIAL TREATMENT REQUESTEDIndemnification Agreement for Antonio Ginorio

     

    
      

      

    

    
 

    INDEMNIFICATION
      AGREEMENT

     

    

    THIS
      INDEMNIFICATION AGREEMENT
      (this
“Agreement”) is entered into as of the 30th day of August, 2006 by and among
      AMERICAN COMMUNITY PROPERTIES TRUST, a Maryland real estate investment trust
      (the “Company”), and Antonio Ginorio (the “Indemnitee”).

    

    WHEREAS,
      the
      Indemnitee is an officer or a member of the Board of Trustees of the Company
      and
      in such capacity is performing a valuable service for the Company;

    

    WHEREAS,
      Maryland law permits the Company to enter into contracts with its officers
      or
      members of its Board of Trustees with respect to indemnification of, and
      advancement of expenses to, such persons; 

    

    WHEREAS,
      the
      Restated Declaration of Trust of the Company (the “Declaration of Trust”)
      authorizes the Company to indemnify and advance expenses to its officers and
      trustees to the maximum extent permitted by Maryland law in effect from time
      to
      time;

     

    WHEREAS,
      the
      Bylaws of the Company (the “Bylaws”) provide that each officer and trustee of
      the Company shall be indemnified by the Company to the maximum extent permitted
      by Maryland law in effect from time to time and shall be entitled to advancement
      of expenses consistent with Maryland law; and

     

    WHEREAS,
      to
      induce the Indemnitee to provide services to the Company as an officer or a
      member of the Board of Trustees, and to provide the Indemnitee with specific
      contractual assurance that indemnification will be available to the Indemnitee
      regardless of, among other things, any amendment to or revocation of the
      Declaration of Trust, the Bylaws, or any acquisition transaction relating to
      the
      Company, the Company desires to provide the Indemnitee with protection against
      personal liability as set forth herein;

    

    NOW,
      THEREFORE,
      in
      consideration of the premises and the covenants contained herein, the Company
      and the Indemnitee hereby agree as follows:

    

    1. DEFINITIONS.

    

    For
      purposes of this Agreement:

    

    
      	 	
              (A)

            	
              “Change
                in Control” shall mean 

            

    

    

    
      	 	
              i.

            	
              the
                dissolution or liquidation of the
                Company;

            

    

    

    
      	 	
              ii.

            	
              the
                merger, consolidation, or reorganization of the Company with one
                or more
                other entities in which the Company is not the surviving entity or
                immediately following which the persons or entities who were beneficial
                owners (as determined pursuant to Rule 13d-3 under the Securities
                Exchange
                Act of 1934, as amended (the “Exchange Act”)) of voting securities of the
                Company immediately prior thereto cease to beneficially own more
                than
                fifty percent (50%) of the voting securities of the surviving entity
                immediately thereafter;

            

    

    

    
      	 	
              iii.

            	
              a
                sale of all or substantially all of the assets of the Company to
                another
                person or entity other than an affiliate of the
                Company;

            

    

    

    
      	 	
              iv.

            	
              any
                transaction (including without limitation a merger or reorganization
                in
                which the Company is the surviving entity) that results in any person
                or
                entity or “group” (within the meaning of Section 13(d)(3) or 14(d)(2) of
                the Exchange Act) (other than persons who are shareholders or affiliates
                immediately prior to the transaction) owning thirty percent (30%)
                or more
                of the combined voting power of all classes of shares of the
                Company;
                or

            

    

    

    
      	 	
              v.

            	
              individuals
                who, as of the date hereof, constitute the Board of Trustees (the
                “Incumbent Board”) cease for any reason to constitute at least a majority
                of the Board of Trustees; provided, however, that any individual
                becoming
                a trustee subsequent to the date hereof whose election, or nomination
                for
                election by the Company’s shareholders, was approved by a vote of at least
                a majority of the trustees then comprising the Incumbent Board (either
                by
                a specific vote or by approval of the proxy statement of the Company
                in
                which such person is named as a nominee for trustee, without written
                objection to such nomination) shall be considered as though such
                individual were a member of the Incumbent Board, but excluding, for
                this
                purpose, any such individual whose initial assumption of office occurs
                as
                a result of an actual or threatened election contest with respect
                to the
                election or removal of trustees or other actual or threatened solicitation
                of proxies or contests by or on behalf of a person other than the
                Board of
                Trustees.

            

    

    

    
      	 	
              (B)

            	
              “Corporate
                Status” describes the status of a person who is or was a trustee or
                officer of the Company (or of any domestic or foreign predecessor
                entity
                of the Company in a merger, consolidation or other transaction in
                which
                the predecessor's interest ceased upon consummation of the transaction)
                or
                is or was serving at the request of the Company (or any such predecessor
                entity) as a director, officer, partner (limited or general), member,
                trustee, employee or agent of any other foreign or domestic corporation,
                partnership, joint venture, limited liability company, trust, other
                enterprise (whether conducted for profit or not for profit) or employee
                benefit plan. The Company (and any domestic or foreign predecessor
                entity
                of the Company in a merger, consolidation or other transaction in
                which
                the predecessor's existence ceased upon consummation of the transaction)
                shall be deemed to have requested the Indemnitee to serve an employee
                benefit plan where the performance of the Indemnitee's duties to
                the
                Company (or any such predecessor entity) also imposes or imposed
                duties
                on, or otherwise involves or involved services by, the Indemnitee
                to the
                plan or participants or beneficiaries of the
                plan.

            

    

     

    

    
      	 	
              (C)

            	
              “Expenses”
                shall include all attorneys' and paralegals' fees, retainers, court
                costs,
                transcript costs, fees of experts, witness fees, travel expenses,
                duplicating costs, printing and binding costs, telephone charges,
                postage,
                delivery service fees, and all other disbursements or expenses of
                the
                types customarily incurred in connection with prosecuting, defending,
                preparing to prosecute or defend, investigating, or being or preparing
                to
                be a witness in a Proceeding.

            

    

    

    
      	 	
              (D)

            	
              “Proceeding”
                includes any action, suit, arbitration, alternate dispute resolution
                mechanism, investigation, administrative hearing, or any other proceeding,
                including appeals therefrom, whether civil, criminal, administrative,
                or
                investigative, except one initiated by the Indemnitee pursuant to
                paragraph 8 of this Agreement to enforce such Indemnitee's rights
                under
                this Agreement.

            

    

    

      	             
              (E)           	
              “Special
                Legal Counsel” means a law firm, or a member of a law firm, that is
                experienced in matters of corporation law and neither presently is,
                or in
                the past two (2)    years has been, retained to represent
                (i) the Company or the Indemnitee in any matter material to either
                such
                party, or (ii) any other party to the Proceeding giving rise to a
                claim
                for indemnification hereunder.

            

     

    
      
        
        

      

      
        -1-

        
          

        

      

      
        
        

      

    

    

    2. INDEMNIFICATION
      

    

    The
      Indemnitee shall be entitled to the rights of indemnification provided in this
      paragraph 2 and under applicable law, the Declaration of Trust, the Bylaws,
      any other agreement, a vote of shareholders or resolution of the Board of
      Trustees or otherwise if, by reason of such Indemnitee's Corporate Status or
      any
      act, omission or event which occurs prior to the date of the commencement of
      such Indemnitee’s Corporate Status, such Indemnitee is, or is threatened to be
      made, a party to any threatened, pending, or completed Proceeding, including
      a
      Proceeding by or in the right of the Company or any Proceeding brought by the
      Indemnitee against the Company. Subject to the other provisions of this
      Agreement, the Indemnitee shall be indemnified hereunder, to the maximum extent
      provided by Maryland law in effect from time to time, against judgments,
      penalties, fines, and settlements and reasonable Expenses actually incurred
      by
      or on behalf of such Indemnitee in connection with such Proceeding or any claim,
      issue or matter therein; provided, however, that if such Proceeding was one
      by
      or in the right of the Company, indemnification may not be made in respect
      of
      such Proceeding if the Indemnitee shall have been adjudged to be liable to
      the
      Company. For purposes of this paragraph 2, excise taxes assessed on the
      Indemnitee with respect to an employee benefit plan pursuant to applicable
      law
      shall be deemed fines.

    

    3. EXPENSES
      OF A SUCCESSFUL PARTY

    

    Without
      limiting the effect of any other provision of this Agreement and without regard
      to the provisions of paragraph 6 hereof, to the extent that the Indemnitee
      is,
      by reason of such Indemnitee's Corporate Status or any act, omission or event
      which occurs prior to the date of the commencement of such Indemnitee’s
      Corporate Status, a party to and is successful, on the merits or otherwise,
      in
      any Proceeding pursuant to a final non-appealable order, such Indemnitee shall
      be indemnified against all reasonable Expenses actually incurred by such
      Indemnitee in connection therewith. If the Indemnitee is not wholly successful
      in such Proceeding pursuant to a final non-appealable order but is successful,
      on the merits or otherwise, as to one or more but less than all claims, issues,
      or matters in such Proceeding pursuant to a final non-appealable order, the
      Company shall indemnify the Indemnitee against all reasonable Expenses actually
      incurred by such Indemnitee in connection with each successfully resolved claim,
      issue or matter. For purposes of this paragraph and without limitation, the
      termination of any claim, issue or matter in such Proceeding by dismissal,
      with
      or without prejudice, shall be deemed to be a successful result as to such
      claim, issue or matter.

    

    4. ADVANCEMENT
      OF EXPENSES

    

    The
      Company shall advance all reasonable Expenses incurred by the Indemnitee in
      connection with any Proceeding within ten (10) days after the receipt by the
      Company of a statement from the Indemnitee requesting such advance from time
      to
      time, whether prior to or after final disposition of such Proceeding. Such
      statement shall reasonably evidence the Expenses incurred or to be incurred
      by
      the Indemnitee and shall include or be preceded or accompanied by (i) a written
      affirmation by the Indemnitee of the Indemnitee's good faith belief that the
      standard of conduct necessary for indemnification by the Company as authorized
      by this Agreement has been met and (ii) a written undertaking by or on behalf
      of
      the Indemnitee to repay the amounts advanced if it should ultimately be
      determined that the standard of conduct has not been met. The undertaking
      required by clause (ii) of the immediately preceding sentence shall be an
      unlimited general obligation of the Indemnitee but need not be secured and
      may
      be accepted without reference to financial ability to make the
      repayment.

    

    5. WITNESS
      EXPENSES

    

    Notwithstanding
      any other provision of this Agreement, to the extent that the Indemnitee is,
      by
      reason of such Indemnitee's Corporate Status or any act, omission or event
      which
      occurs prior to the date of the commencement of such Indemnitee’s Corporate
      Status, a witness for any reason in any Proceeding to which such Indemnitee
      is
      not a named defendant or respondent, such Indemnitee shall be indemnified by
      the
      Company against all Expenses actually incurred by or on behalf of such
      Indemnitee in connection therewith.

    

    
      
        
        

      

      
        -2-

        
          

        

      

      
        
        

      

    

    6. DETERMINATION
      OF ENTITLEMENT TO AND AUTHORIZATION OF INDEMNIFICATION

    

    
      	 	
              (A)

            	
              To
                obtain indemnification under this Agreement, the Indemnitee shall
                submit
                to the Company a written request, including therewith such documentation
                and information reasonably necessary to determine whether and to
                what
                extent the Indemnitee is entitled to
                indemnification.

            

    

     

    
      	(B)        
               	
              Indemnification
                under this Agreement may not be made unless authorized for a specific
                Proceeding after a determination has been made in accordance with
                this
                Section 6(B) that indemnification of the Indemnitee is permissible
                in the
                circumstances because the Indemnitee has met the following standard
                of
                conduct: the Company shall indemnify the Indemnitee in accordance
                with the
                provisions of paragraph 2 hereof, unless it
                is established that: (a) the act or omission of the Indemnitee was
                material to the matter giving rise to the Proceeding and (x) was
                committed
                in bad faith or (y) was the result of active and deliberate dishonesty;
                (b) the Indemnitee actually received an improper personal benefit
                in
                money, property or services; or (c) in the case of any criminal
                proceeding, the Indemnitee had reasonable cause to believe that the
                act or
                omission was unlawful. Upon receipt by the Company of the Indemnitee's
                written request for indemnification pursuant to subparagraph 6(A),
                a
                determination as to whether the applicable standard of conduct has
                been
                met shall be made within the period specified in paragraph 6(E):
                (i) if a
                Change in Control shall have occurred, by Special Legal Counsel in
                a
                written opinion to the Board of Trustees, a copy of which shall be
                delivered to the Indemnitee, with Special Legal Counsel selected
                by the
                Indemnitee (unless the Indemnitee shall request that such determination
                be
                made by the person or persons and in the manner provided in clause
                (ii) of
                this paragraph 6(B), in which event the provisions of such clause
                (ii)
                shall apply) (if the Indemnitee selects Special Legal Counsel to
                make the
                determination under this clause (i), the Indemnitee shall give prompt
                written notice to the Company advising them of the identity of the
                Special
                Legal Counsel so selected); or (ii) if a Change in Control shall
                not have
                occurred, (A) by the Board of Trustees by a majority vote of a quorum
                consisting of trustees not, at the time, parties to the Proceeding,
                or, if
                such quorum cannot be obtained, then by a majority vote of a committee
                of
                the Board of Trustees consisting solely of two or more trustees not,
                at
                the time, parties to such Proceeding and who were duly designated
                to act
                in the matter by a majority vote of the full Board of Trustees in
                which
                the designated trustees who are parties may participate, (B) by Special
                Legal Counsel in a written opinion to the Board of Trustees, a copy
                of
                which shall be delivered to the Indemnitee, with Special Legal Counsel
                selected by the Board of Trustees or a committee of the Board of
                Trustees
                by vote as set forth in subparagraph (ii)(A) of this paragraph 6(B),
                or,
                if the requisite quorum of the full Board of Trustees cannot be obtained
                therefor and the committee cannot be established, by a majority of
                the
                full Board of Trustees in which trustees who are parties to the Proceeding
                may participate (if the Company selects Special Legal Counsel to
                make the
                determination under this clause (ii), the Company shall give prompt
                written notice to the Indemnitee advising him or her of the identity
                of
                the Special Legal Counsel so selected) or (C) by the shareholders
                of the
                Company. If it is so determined that the Indemnitee is entitled to
                indemnification, payment to the Indemnitee shall be made within ten
                (10)
                days after such determination. Authorization of indemnification and
                determination as to reasonableness of Expenses shall be made in the
                same
                manner as the determination that indemnification is permissible.
                However,
                if the determination that indemnification is permissible is made
                by
                Special Legal Counsel under clause (B) above, authorization of
                indemnification and determination as to reasonableness of Expenses
                shall
                be made in the manner specified under clause (B) above for the selection
                of such Special Legal Counsel.

            

    

    

    
      	 	
              (C)

            	
              The
                Indemnitee shall cooperate with the person or entity making such
                determination with respect to the Indemnitee's entitlement to
                indemnification, including providing upon reasonable advance request
                any
                documentation or information which is not privileged or otherwise
                protected from disclosure and which is reasonably available to the
                Indemnitee and reasonably necessary to such determination. Any reasonable
                costs or expenses (including reasonable attorneys' fees and disbursements)
                incurred by the Indemnitee in so cooperating shall be borne by the
                Company
                (irrespective of the determination as to the Indemnitee's entitlement
                to
                indemnification) and the Company hereby indemnifies and agrees to
                hold the
                Indemnitee harmless therefrom.

            

    

     

    
      	 	
              (D)
                

            	
              The
                knowledge and/or actions, or failure to act, of any trustee, officer,
                agent or employee of the Company shall not be imputed to the Indemnitee
                for purposes of determining entitlement to indemnification under
                this
                Agreement.

            

    

    

    (E)     In
      the
      event the determination of entitlement to indemnification is to be made by
      Special Legal Counsel pursuant to paragraph 6(B) hereof, the Indemnitee, or
      the
      Company, as the case may be, may, within seven (7) days after such written
      notice of selection shall have been given, deliver to the Company or to the
      Indemnitee, as the case may be, a written objection to such selection. Such
      objection may be asserted only on the grounds that the Special Legal Counsel
      so
      selected does not meet the requirements of “Special Legal Counsel” as defined in
      paragraph 1 of this Agreement. If such written objection is made, the Special
      Legal Counsel so selected may not serve as Special Legal Counsel until a court
      has determined that such objection is without merit. If, within twenty (20)
      days
      after submission by the Indemnitee of a written request for indemnification
      pursuant to paragraph 6(A) hereof, no Special Legal Counsel shall have been
      selected or, if selected, shall have been objected to, either the Company or
      the
      Indemnitee may petition a court for resolution of any objection which shall
      have
      been made by the Company or the Indemnitee to the other's selection of Special
      Legal Counsel and/or for the appointment as Special Legal Counsel of a person
      selected by the court or by such other person as the court shall designate,
      and
      the person with respect to whom an objection is so resolved or the person so
      appointed shall act as Special Legal Counsel under paragraph 6(B) hereof. The
      Company shall pay all reasonable fees and expenses of Special Legal Counsel
      incurred in connection with acting pursuant to paragraph 6(B) hereof, and all
      reasonable fees and expenses incident to the selection of such Special Legal
      Counsel pursuant to this paragraph 6(D). In the event that a determination
      of
      entitlement to indemnification is to be made by Special Legal Counsel and such
      determination shall not have been made and delivered in a written opinion within
      ninety (90) days after the receipt by the Company of the Indemnitee's request
      in
      accordance with paragraph 6(A), upon the due commencement of any judicial
      proceeding in accordance with paragraph 8(A) of this Agreement, Special Legal
      Counsel shall be discharged and relieved of any further responsibility in such
      capacity.

     

    
      	 	
              (F)

            	
              If
                the person or entity making the determination whether the Indemnitee
                is
                entitled to indemnification shall not have made a determination within
                sixty (60) days after receipt by the Company of the request therefor,
                the
                requisite determination of entitlement to indemnification shall be
                deemed
                to have been made and the Indemnitee shall be entitled to such
                indemnification, absent: (i) a misstatement by the Indemnitee of
                a
                material fact, or an omission of a material fact necessary to make
                the
                Indemnitee's statement not materially misleading, in connection with
                the
                request for indemnification, or (ii) a prohibition of such indemnification
                under applicable law. Such sixty (60) day period may be extended
                for a
                reasonable time, not to exceed an additional thirty (30) days, if
                the
                person or entity making said determination in good faith requires
                additional time for the obtaining or evaluating of documentation
                and/or
                information relating thereto. The foregoing provisions of this paragraph
                6(E) shall not apply: (i) if the determination of entitlement to
                indemnification is to be made by the shareholders and if within fifteen
                (15) days after receipt by the Company of the request for such
                determination the Board of Trustees resolves to submit such determination
                to the shareholders for consideration at an annual or special meeting
                thereof to be held within seventy-five (75) days after such receipt
                and
                such determination is made at such meeting, or (ii) if the determination
                of entitlement to indemnification is to be made by Special Legal
                Counsel
                pursuant to paragraph 6(B) of this
                Agreement.

            

    

    

    7. PRESUMPTIONS

    

    
      	 	
              (A)

            	
              In
                making a determination with respect to entitlement or authorization
                of
                indemnification hereunder, the person or entity making such determination
                shall presume that the Indemnitee is entitled to indemnification
                under
                this Agreement and the Company shall have the burden of proof to
                overcome
                such presumption.

            

    

    

    
      	(B)          	
              The
                termination of any Proceeding by conviction, or upon a plea of nolo
                contendere or its equivalent, or an entry of an order of probation
                prior
                to judgment, creates a rebuttable presumption that the Indemnitee
                did not
                meet the requisite standard of conduct described herein for
                indemnification.

            

    

    

    
      
        
        

      

      
        -3-

        
          

        

      

      
        
        

      

    

    8. REMEDIES

    

    
      	 	
              (A)

            	
              In
                the event that: (i) a determination is made in accordance with the
                provisions of paragraph 6 that the Indemnitee is not entitled to
                indemnification under this Agreement, or (ii) advancement of reasonable
                Expenses is not timely made pursuant to this Agreement, or (iii)
                payment
                of indemnification due the Indemnitee under this Agreement is not
                timely
                made, the Indemnitee shall be entitled to an adjudication in an
                appropriate court of competent jurisdiction of such Indemnitee's
                entitlement to such indemnification or advancement of
                Expenses.

            

    

    

    
      	 	
              (B)

            	
              In
                the event that a determination shall have been made pursuant to paragraph
                6 of this Agreement that the Indemnitee is not entitled to
                indemnification, any judicial proceeding commenced pursuant to this
                paragraph 8 shall be conducted in all respects as a de novo trial
                on the
                merits. The fact that a determination had been made earlier pursuant
                to
                paragraph 6 of this Agreement that the Indemnitee was not entitled
                to
                indemnification shall not be taken into account in any judicial proceeding
                commenced pursuant to this paragraph 8 and the Indemnitee shall not
                be
                prejudiced in any way by reason of that adverse determination. In
                any
                judicial proceeding commenced pursuant to this paragraph 8, the Company
                shall have the burden of proving that the Indemnitee is not entitled
                to
                indemnification or advancement of Expenses, as the case may
                be.

            

    

    

    
      	 	
              (C)

            	
              If
                a determination shall have been made or deemed to have been made
                pursuant
                to this Agreement that the Indemnitee is entitled to indemnification,
                the
                Company shall be bound by such determination in any judicial proceeding
                commenced pursuant to this paragraph 8, absent: (i) a misstatement
                by the
                Indemnitee of a material fact, or an omission of a material fact
                necessary
                to make the Indemnitee's statement not materially misleading, in
                connection with the request for indemnification, or (ii) a prohibition
                of
                such indemnification under applicable
                law.

            

    

    

    
      	 	
              (D)

            	
              The
                Company shall be precluded from asserting in any judicial proceeding
                commenced pursuant to this paragraph 8 that the procedures and
                presumptions of this Agreement are not valid, binding and enforceable
                and
                shall stipulate in any such court that the Company is bound by all
                the
                provisions of this Agreement.

            

    

    

    
      	 	
              (E)

            	
              In
                the event that the Indemnitee, pursuant to this paragraph 8, seeks
                a
                judicial adjudication of such Indemnitee's rights under, or to recover
                damages for breach of, this Agreement, if successful on the merits
                or
                otherwise as to all or less than all claims, issues or matters in
                such
                judicial adjudication, the Indemnitee shall be entitled to recover
                from
                the Company, and shall be indemnified by the Company against, any
                and all
                reasonable Expenses actually incurred by such Indemnitee in connection
                with each successfully resolved claim, issue or
                matter.

            

    

    

    9. NOTIFICATION
      AND DEFENSE OF CLAIMS

    

    The
      Indemnitee agrees promptly to notify the Company in writing upon being served
      with any summons, citation, subpoena, complaint, indictment, information, or
      other document relating to any Proceeding or matter which may be subject to
      indemnification or advancement of Expenses covered hereunder, but the failure
      so
      to notify the Company will not relieve the Company from any liability that
      the
      Company may have to Indemnitee under this Agreement unless the Company is
      materially prejudiced thereby. With respect to any such Proceeding as to which
      Indemnitee notifies the Company of the commencement thereof:

     

    

    (A)   The
      Company will be entitled to participate therein at their own
      expense.

    

    
      	 	
              (B)

            	
              Except
                as otherwise provided below, the Company will be entitled to assume
                the
                defense thereof, with counsel reasonably satisfactory to Indemnitee.
                After
                notice from the Company to Indemnitee of the Company's election so
                to
                assume the defense thereof, the Company will not be liable to Indemnitee
                under this Agreement for any legal or other expenses subsequently
                incurred
                by Indemnitee in connection with the defense thereof other than reasonable
                costs of investigation or as otherwise provided below. Indemnitee
                shall
                have the right to employ Indemnitee's own counsel in such Proceeding,
                but
                the fees and disbursements of such counsel incurred after notice
                from the
                Company of the Company's assumption of the defense thereof shall
                be at the
                expense of Indemnitee unless (a) the employment of counsel by
                Indemnitee has been authorized by the Company, (b) the Indemnitee
                shall
                have reasonably concluded that there may be a conflict of interest
                between
                the Company and the Indemnitee in the conduct of the defense of such
                action, (c) such Proceeding seeks penalties or other relief against
                the Indemnitee with respect to which the Company could not provide
                monetary indemnification to the Indemnitee (such as injunctive relief
                or
                incarceration) or (d) the Company shall not in fact have employed
                counsel
                to assume the defense of such action, in each of which cases the
                fees and
                disbursements of counsel shall be at the expense of the Company.
                The
                Company shall not be entitled to assume the defense of any Proceeding
                brought by or on behalf of the Company, or as to which Indemnitee
                shall
                have reached the conclusion specified in clause (b) above, or which
                involves penalties or other relief against Indemnitee of the type
                referred
                to in clause (c) above. 

            

    

     

    

    
      	 	
              (C)

            	
              The
                Company shall not be liable to indemnify Indemnitee under this Agreement
                for any amounts paid in settlement of any action or claim effected
                without
                the Company's written consent. The Company shall not settle any action
                or
                claim in any manner that would impose any penalty or limitation on
                Indemnitee without Indemnitee's written consent. Neither the Company
                nor
                Indemnitee will unreasonably withhold or delay consent to any proposed
                settlement.

            

    

     

    10. NON-EXCLUSIVITY;
      SURVIVAL OF RIGHTS; INSURANCE SUBROGATION

    

    
      	 	
              (A)

            	
              The
                rights of indemnification and to receive advancement of reasonable
                Expenses as provided by this Agreement shall not be deemed exclusive
                of
                any other rights to which the Indemnitee may at any time be entitled
                under
                applicable law, the Declaration of Trust, the Bylaws, any other agreement,
                a vote of shareholders, a resolution of the Board of Trustees or
                otherwise, except that any payments otherwise required to be made
                by the
                Company hereunder shall be offset by any and all amounts received
                by the
                Indemnitee from any other indemnitor or under one or more liability
                insurance policies maintained by an indemnitor or otherwise and shall
                not
                be duplicative of any other payments received by an Indemnitee from
                the
                Company in respect of the matter giving rise to the indemnity hereunder.
                No amendment, alteration or repeal of this Agreement or any provision
                hereof shall be effective as to the Indemnitee with respect to any
                action
                taken or omitted by the Indemnitee as a member of the Board of Trustees
                prior to such amendment, alteration or
                repeal.

            

    

    

    
      	 	
              (B)

            	
              In
                addition to the indemnification protection provided to the Indemnitee
                by
                this Agreement, the Company shall also purchase and maintain Directors'
                and Officers' Liability Insurance, at its expense, and in amounts
                and
                subject to such terms as shall be determined by the Board of Trustees.
                The
                Indemnitee shall be covered by such policy or policies in accordance
                with
                its or their terms to the maximum extent of the coverage available
                and
                upon any Change in Control the Company shall use commercially reasonable
                efforts to obtain or arrange for continuation and/or “tail” coverage for
                the Indemnitee on terms at least as favorable to the Indemnitee as
                in
                effect immediately prior to the consummation of the Change in
                Control.

            

    

    

    
      	 	
              (C)

            	
              In
                the event of any payment under this Agreement, the Company shall
                be
                subrogated to the extent of such payment to all of the rights of
                recovery
                of the Indemnitee, who shall execute all papers required and take
                all
                actions necessary to secure such rights, including execution of such
                documents as are necessary to enable the Company to bring suit to
                enforce
                such rights.

            

    

    

    
      	 	
              (D)

            	
              The
                Company shall not be liable under this Agreement to make any payment
                of
                amounts otherwise indemnifiable hereunder if and to the extent that
                the
                Indemnitee has otherwise actually received such payment under any
                insurance policy, contract, agreement, or
                otherwise.

            

    

     

    
      
        
        

      

      
        -4-

        
          

        

      

      
        
        

      

    

    

    11. CONTINUATION
      OF INDEMNITY

    

    
      	 	
              (A)

            	
              All
                agreements and obligations of the Company contained herein shall
                continue
                during the period the Indemnitee is an officer or a member of the
                Board of
                Trustees of the Company and shall continue thereafter so long as
                the
                Indemnitee shall be subject to any threatened, pending or completed
                Proceeding by reason of such Indemnitee's Corporate Status and during
                the
                period of statute of limitations for any act, omission or event occurring
                during the Indemnitee's term of Corporate Status or prior to the
                date of
                the commencement of such Indemnitee’s Corporate Status. This Agreement
                shall be binding upon the Company and their respective successors
                and
                assigns and shall inure to the benefit of the Indemnitee and such
                Indemnitee's heirs, executors and
                administrators.

            

    

    

    
      	 	
              (B)

            	
              The
                Company shall require and cause any successor (whether direct or
                indirect
                by purchase, merger, consolidation or otherwise) to all, substantially
                all
                or a substantial part, of the business and/or assets of the Company,
                by
                written agreement in form and substance reasonably satisfactory to
                the
                Indemnitee, expressly to assume and agree to perform this Agreement
                in the
                same manner and to the same extent that the Company would be required
                to
                perform if no such succession had taken
                place.

            

    

    

    12. SEVERABILITY

    

    If
      any
      provision or provisions of this Agreement shall be held to be invalid, illegal,
      or unenforceable for any reason whatsoever, (i) the validity, legality, and
      enforceability of the remaining provisions of this Agreement (including, without
      limitation, each portion of any paragraph of this Agreement containing any
      such
      provision held to be invalid, illegal, or unenforceable, that is not itself
      invalid, illegal, or unenforceable) shall not in any way be affected or impaired
      thereby, and (ii) to the fullest extent possible, the provisions of this
      Agreement (including, without limitation, each portion of any paragraph of
      this
      Agreement containing any such provision held to be invalid, illegal, or
      unenforceable, that is not itself invalid, illegal, or unenforceable) shall
      be
      construed so as to give effect to the intent manifested by the provisions held
      invalid, illegal, or unenforceable.

    

    13. NOTICE
      TO THE COMPANY SHAREHOLDERS

    

    Any
      indemnification of, or advancement of reasonable Expenses, to an Indemnitee
      in
      accordance with this Agreement, if arising out of a Proceeding by or in the
      right of the Company, shall be reported in writing to the shareholders of the
      Company with the notice of the next Company shareholders' meeting or prior
      to
      the meeting.

     

    

    14. HEADINGS

    

    The
      headings of the paragraph of this Agreement are inserted for convenience only
      and shall not be deemed to constitute part of this Agreement or to affect the
      construction thereof.

    

    15. MODIFICATION
      AND WAIVER

    

    No
      supplement, modification, or amendment of this Agreement shall be binding unless
      executed in writing by each of the parties hereto. No waiver of any of the
      provisions of this Agreement shall be deemed or shall constitute a waiver of
      any
      other provisions hereof (whether or not similar) nor shall such waiver
      constitute a continuing waiver.

    

    
      
        
        

      

      
        -5-

        
          

        

      

      
        
        

      

    

    16. NOTICES

    

    All
      notices, requests, demands, and other communications hereunder shall be in
      writing and shall be deemed to have been duly given if (i) delivered by hand
      and
      receipted for by the party to whom said notice or other communication shall
      have
      been directed, or (ii) mailed by certified or registered mail with postage
      prepaid, on the third business day after the date on which it is so mailed,
      if
      so delivered or mailed, as the case may be, to the following
      addresses:

     

         If
      to the Indemnitee, addressed to the
      Indemnitee at the address set forth in the records of the Company.

     

        If
      to the
      Company, addressed to the Company at the following address:

    

    American
      Community Properties Trust

    Attention:
      Chief Financial Officer

    222
      Smallwood Village Center

    St.
      Charles, Maryland 20602

    

    or
      to
      such other address as may have been furnished to the Indemnitee by the Company
      or to the Company by the Indemnitee, as the case may be.

    

    17. GOVERNING
      LAW

    

    The
      parties agree that this Agreement shall be governed by, and construed and
      enforced in accordance with, the laws of the State of Maryland, without
      application of the conflict of laws principles thereof.

    

    18. NO
      ASSIGNMENTS

    

    The
      Indemnitee may not assign its rights or delegate obligations under this
      Agreement without the prior written consent of the Company. Any assignment
      or
      delegation in violation of this Section 18 shall be null and void.

    

    19. NO
      THIRD PARTY RIGHTS

    

    Nothing
      expressed or referred to in this Agreement will be construed to give any person
      other than the parties to this Agreement any legal or equitable right, remedy
      or
      claim under or with respect to this Agreement or any provision of this
      Agreement. This Agreement and all of its provisions are for the sole and
      exclusive benefit of the parties to this Agreement and their successors and
      permitted assigns.

    

    20. COUNTERPARTS

    

    This
      Agreement may be executed in two or more counterparts, each of which shall
      be
      deemed an original, but all of which together constitute an agreement binding
      on
      all of the parties hereto.

    

    

    (Remainder
      of page intentionally left blank.)

    
      
        
        

      

      
        -6-

        
          

        

      

      
        
        

      

    

    IN
      WITNESS WHEREOF,
      the
      parties hereto have executed this Agreement as of the day and year first above
      written.

    

    AMERICAN
      COMMUNITY PROPERTIES TRUST

    

    By: /s/
      Cynthia L. Hedrick

    Name: Cynthia
      L. Hedrick

    Title: Executive
      Vice President/Chief Financial Officer

    

    

    

    INDEMNITEE:

    

    /s/
      Antonio Ginorio

    Antonio
      Ginorio

    

    

    
      
        
        

      

      
        -7-

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