Document:

Certificate of Designation

 Exhibit 10.1 
 BOSTON PROPERTIES LIMITED PARTNERSHIP 
 CERTIFICATE OF DESIGNATIONS

 ESTABLISHING AND FIXING THE RIGHTS, LIMITATIONS AND 

PREFERENCES OF A SERIES OF PREFERRED UNITS 
 Reference is made to the Second Amended and Restated Agreement of Limited Partnership, as amended (the “Partnership Agreement”), of Boston Properties Limited Partnership, a Delaware
limited partnership (the “Partnership”), of which this Certificate of Designations (this “Certificate”) shall become a part. Capitalized terms used herein and not defined herein have the meanings ascribed thereto in
the main part of the Partnership Agreement. Section references are (unless otherwise specified) references to sections in this Certificate. 
 WHEREAS, Section 14.1.B(3) of the main part of the Partnership Agreement permits the General Partner, without the consent of the Limited Partners, to amend the Partnership Agreement for the purpose
of setting forth and reflecting in the Partnership Agreement the designations, rights, powers, duties, and preferences of holders of any additional Partnership Interests issued pursuant to Section 4.2.A of the main part of the Partnership
Agreement; and 
 WHEREAS, the General Partner desires by this Certificate to so amend the Partnership Agreement as of this 29th
day of August, 2012 (the “Closing Date”). 
 NOW, THEREFORE, the General Partner has set forth in this
Certificate the following description of the preferences and other rights, voting powers, restrictions, limitations as to distributions, qualifications and terms and conditions of redemption of a class and series of Partnership Interest to be
represented by Partnership Units which shall be referred to as “Series Four Preferred Units”: 
 1.
Designation and Number. A series of non-convertible Preferred Units, designated the “Series Four Preferred Units,” is hereby established. The authorized number of Series Four Preferred Units shall be 1,600,000. 

2. Definitions. For purposes of this Certificate of Designations, the following terms shall have the meanings indicated:

 “Contribution Agreement” shall mean that certain Contribution and Loan Purchase Agreement dated
August 29, 2012, by and among the Partnership and Boston Properties LLC, 680 Folsom Owner LLC, 680 Folsom Mezzanine LLC, Rockwood Folsom REIT Sub, LLC and TMG Folsom LLC. 
 “Closing Date” shall have the meaning set forth in the recitals above. 

 “Distribution Payment Date” shall have the meaning set forth in
paragraph (a) of Section 3 hereof. 
 “Distribution Payment Record Date” shall have the meaning set
forth in paragraph (a) of Section 3 hereof. 
 “Encumbered Units” shall have the meaning set forth in
paragraph (a) of Section 5 hereof. 
 “Flip Date” shall have the meaning set forth in
paragraph (a) of Section 5 hereof. 
 “GP Call Right” shall have the meaning set forth in
paragraph (a) of Section 5 hereof. 
 “Holder Put Right” shall have the meaning set forth in
paragraph (a) of Section 5 hereof. 
 “Issue Date” shall mean, with respect to a Series Four
Preferred Unit, the Closing Date. 
 “Junior Units” shall mean the Common Units and any other class or series
of Partnership Units the holders of which are entitled to the receipt of distributions or of amounts distributable upon liquidation, dissolution or winding up, as the case may be, junior in priority to the holders of the Series Four Preferred Units.

 “Liquidation Preference” shall have the meaning set forth in paragraph (a) of Section 4 hereof.

 “Make-Whole Amount” shall mean, with respect to any Series Four Preferred Unit, an amount of cash equal to
the aggregate preferential distributions that would be paid or accrue on one Series Four Preferred Unit pursuant to Section 3(a) for the period commencing on the date on which the applicable Series Four Preferred Unit is redeemed and ending on
the day of the first anniversary of the Closing Date. 
 “Overlap Release Date” shall have the meaning set
forth in paragraph (a) of Section 5 hereof. 
 “Parity Units” shall have the meaning set forth in
paragraph (b) of Section 8 hereof. 
 “Pledge Agreement” shall mean that certain OP Unit Pledge
Agreement dated August 29, 2012, by and among the Partnership and 680 Folsom Owner LLC, 680 Folsom Mezzanine LLC, 680 Folsom Holding LLC and 680 Folsom LLC. 
 “Put/Call Date” shall mean any date on which a Holder Put Right or GP Call Right is settled pursuant to Section 5 hereof. 

  
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 “Redemption Notice” shall mean notice of exercise of a Holder Put Right or
GP Call Right. 
 “Release Date” shall have the meaning set forth in paragraph (a) of Section 5
hereof. 
 “Released Units” shall have the meaning set forth in paragraph (a) of Section 5 hereof.

 3. Distributions. 
 (a) The holders of Series Four Preferred Units shall be entitled to receive, in respect of each Distribution Payment Date, when, as and if authorized and declared by the General Partner, out of funds
legally available for the payment of distributions, cumulative preferential distributions payable in cash in an amount per Series Four Preferred Unit equal to $0.25 per quarter (equal to an annual rate of 2.0% of the total of $50.00 Liquidation
Preference per Series Four Preferred Unit). Such distributions shall accrue on each outstanding Series Four Preferred Unit on a daily basis and shall be cumulative from the day immediately following the date of the last daily distribution accrual
that has been paid in full in accordance with this Section 3(a) or, if no prior distributions have been paid on any Series Four Preferred Unit, the Issue Date, and shall be payable quarterly in arrears on the fifteenth day of February, May,
August and November of each year or, if not a Business Day, the next succeeding Business Day (each a “Distribution Payment Date”), commencing November 15, 2012 for distributions accrued since the Issue Date in an amount per
share of Series Four Preferred Unit equal to $0.25 per quarter pro-rated to reflect the portion of a quarter represented by the period between the Issue Date and November 15, 2012. Each such distribution shall be payable in arrears to the
holders of record of the Series Four Preferred Units, as they appear on the records of the Partnership at the close of business on such record dates, not more than 30 days preceding the applicable Distribution Payment Date (the “Distribution
Payment Record Date”) (or, in the case of a Distribution Payment Record Date that coincides with a record date for payment of distributions on Common Units, not more than 60 days preceding the applicable Distribution Payment Date), as shall
be fixed by the General Partner. Any distribution payable on the Series Four Preferred Units for any partial distribution period will be computed on the basis of a 360-day year consisting of twelve 30-day months. Accrued and unpaid distributions for
any past Distribution Periods and any additional amounts as provided in Section 3(b) may be authorized and declared and paid at any time, without reference to any regular Distribution Payment Date, to holders of record on such date, not
exceeding 45 days preceding the payment date thereof (or, in the case of a record date that coincides with a record date for payment of distributions on Common Units, not more than 60 days preceding the applicable payment date thereof), as may be
fixed by the General Partner. Any distribution made on Series Four Preferred Units shall first be credited against the earliest accumulated but unpaid distribution due with respect to such Units which remains payable. 

(b) Notwithstanding Section 3(a) or 3(e), distributions on the Series Four Preferred Units shall accrue whether or not the terms and
provisions set forth in Section 3(a) or 3(e) at any time prohibit the current payment of distributions, whether or not the Partnership has earnings, whether or not there are funds legally available for the payment of such distributions,

  
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and whether or not such distributions are authorized or declared. Distributions will be declared and paid when due in all events to the fullest extent permitted by law, subject to the limitations
set forth in Section 3(e). Accrued but unpaid distributions on the Series Four Preferred Units will accumulate as of the Distribution Payment Date on which they first become payable and will earn interest at the rate of 2.0% per annum,
compounding quarterly. All references herein to accrued but unpaid distributions on the Series Four Preferred Units shall be deemed to include any interest earned but not paid on such amounts. 

(c) Unless either (i) the full amount of accrued distributions on the Series Four Preferred Units and all Parity Units have been or
contemporaneously are declared and paid or (ii) a sum sufficient for the payment thereof is set apart for payment (without the need for any declaration) for all past distribution periods and the Partnership projects, in good faith, that the
cash available for distribution to holders as of the next Distribution Payment Date will be sufficient to fund the full payment of the accrued distributions at such time on the Series Four Preferred Units and all Parity Units, no distributions
(other than distributions payable solely in Junior Units) shall be declared or paid or set apart for payment upon any Junior Units and no Junior Units (or securities convertible into Junior Units) shall be redeemed, purchased or otherwise acquired
for cash by the Partnership or any of its Affiliates; provided, however, that, notwithstanding the foregoing, the Partnership may redeem, purchase or otherwise acquire Junior Units (or securities convertible into Junior Units) for cash
in accordance with the terms of the Partnership Agreement if the Partnership projects, in good faith, that it will have sufficient access to capital to satisfy its redemption obligations under Section 5 when such obligations arise and nothing
herein shall limit the Partnership’s ability to redeem, purchase or otherwise acquire Junior Units (or securities convertible into Junior Units) for other securities that are not otherwise prohibited to be issued under this Certificate.

 (d) Unless either (i) the full amount of accrued distributions on the Series Four Preferred Units have been or
contemporaneously are declared and paid or (ii) a sum sufficient for the payment thereof is set apart for payment (without the need for any declaration) for all past distribution periods and the Partnership projects, in good faith, that the
cash available for distribution to holders as of the next Distribution Payment Date will be sufficient to fund the full payment of the accrued distributions at such time on the Series Four Preferred Units, full distributions (other than
distributions payable solely in Junior Units) shall not be declared or paid or set apart for payment upon any Parity Units and no Parity Units (or securities convertible into Parity Units) shall be redeemed, purchased or otherwise acquired for cash
by the Partnership or any of its Affiliates; provided, however, that, notwithstanding the foregoing, the Partnership may redeem, purchase or otherwise acquire Parity Units for cash in accordance with the terms of the Partnership
Agreement if the Partnership projects, in good faith, that that it will have sufficient access to capital to satisfy its redemption obligations under Section 5 when such obligations arise and nothing herein shall limit the Partnership’s
ability to redeem, purchase or otherwise acquire Parity Units for other securities that are not otherwise prohibited to be issued under this Certificate. When distributions are not paid in full or a sum sufficient for such full payment is not set
apart, as contemplated by the preceding sentence, all distributions authorized and declared upon Series Four Preferred Units and all distributions authorized and declared upon any other series or class or classes of Parity Units shall be authorized
and declared ratably in proportion to the respective amounts of distributions accumulated and unpaid on the Series Four Preferred Units and such Parity Units. 

  
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 (e) Without limiting the other provisions hereof, no distributions on Series Four Preferred
Units (other than liquidating distributions made in accordance with Section 13.2 of the main part of the Partnership Agreement and Section 4 hereof) shall be paid by the Partnership at such time as the terms and provisions of any agreement
of the Partnership or its affiliates or subsidiaries, relating to bona fide indebtedness for borrowed money, prohibits such declaration or payment or provides that such declaration or payment would constitute a breach thereof or a default
thereunder, or if such declaration or payment shall be restricted or prohibited by law (and such failure to pay distributions on the Series Four Preferred Units shall prohibit other distributions by the Partnership as described in Sections 3(c)
and (d)); for the avoidance of doubt, distributions on the Series Four Preferred Units will nonetheless continue to accrue during any period in which distributions cannot be paid pursuant to this Section 3(e). 

(f) Notwithstanding anything herein to the contrary, upon liquidation, dissolution or winding up of the Partnership, no distributions
shall be made to any series or class or classes of Junior Units until after payment shall have been made in full to the holders of the Series Four Preferred Units, as provided in Section 4(a). 

4. Liquidation Preference. 
 (a) In the event of any liquidation, dissolution or winding up of the Partnership, whether voluntary or involuntary, before any payment or distribution of the assets of the Partnership (whether capital or
surplus) shall be made to the holders of Junior Units, the holders of the Series Four Preferred Units shall be entitled to receive Fifty Dollars ($50.00) per Series Four Preferred Unit (the “Liquidation Preference”), plus an amount
equal to all distributions (whether or not earned or declared) accrued and unpaid thereon pursuant to Section 3 to the date of final distribution to such holder; but such holders of Series Four Preferred Units shall not be entitled to any
further payment. If, upon any such liquidation, dissolution or winding up of the Partnership, the assets of the Partnership, or proceeds thereof, distributable among the holders of Series Four Preferred Units shall be insufficient to pay in full the
preferential amount aforesaid and liquidating payments on any other Parity Units, then such assets, or the proceeds thereof, shall be distributed among the holders of such Series Four Preferred Units and any such other Parity Units ratably in
accordance with the respective amounts that would be payable on such Series Four Preferred Units and any such other Parity Units if all amounts payable thereon were paid in full. 

(b) Upon any liquidation, dissolution or winding up of the Partnership, after payment shall have been made in full to the holders of the
Series Four Preferred Units and Parity Units, as provided in this Section 4, any series or class or classes of Junior Units shall, subject to any respective terms and provisions applying thereto, be entitled to receive any and all assets
remaining to be paid or distributed. 
 (c) After payment of the full amount of the liquidating distributions to which they are
entitled pursuant to Sections 4(a) and (b), the holders of Series Four Preferred Units will have no right or claim to any of the remaining assets of the Partnership. 
 (d) The consolidation or merger of the Partnership with or into any other corporation, partnership, trust or entity or of any other corporation, partnership, trust or entity

  
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with or into the Partnership, or an exchange of Units or partnership interests, or the sale, lease or conveyance of all or substantially all of the property or business of the Partnership (unless
the net proceeds of any of the foregoing transactions shall be distributed to the holders of Units rather than reinvested), shall not be deemed to constitute a liquidation, dissolution or winding up of the Partnership. 

5. Redemption. 
 (a) Subject to adjustment as provided in this Section 5: 

(i) beginning with the day after the Closing Date and ending on the 180th day after the Closing Date, each of the Series Four Preferred Unit
holders, upon giving prior written notice as provided below and except as otherwise provided in Section 5(a)(vi) below, shall have the right (a “Holder Put Right”) to require that the Partnership redeem for cash, at a
redemption price of $50.00 per Series Four Preferred Unit, all (but not less than all) of the Series Four Preferred Units held by such holder; 
 (ii) beginning with the day of the first anniversary of the Closing Date and ending 30 calendar days thereafter, the General Partner, upon giving prior written notice as provided below and except as
otherwise provided in Section 5(a)(vi) below, shall have the right (a “GP Call Right”) to require the redemption for cash, at a redemption price of $50.00 per Series Four Preferred Unit, all (but not less than all) of the
outstanding Series Four Preferred Units; 
 (iii) beginning on the day of the 16th month anniversary of the Closing Date and ending 30 calendar days
thereafter (the “Flip Date”), each of the Series Four Preferred Unit holders, upon giving prior written notice as provided below and except as otherwise provided in Section 5(a)(vi) below, shall have a Holder Put Right to
require that the Partnership redeem for cash, at a redemption price of $50.00 per Series Four Preferred Unit, all (but not less than all) of the Series Four Preferred Units held by such holder; 

(iv) beginning the first day of the third month of the first complete calendar quarter following the Flip Date and ending 30 calendar
days thereafter, the General Partner, upon giving prior written notice as provided below and except as otherwise provided in Section 5(a)(vi) below, shall have a GP Call Right to require the redemption for cash, at a redemption price of $50.00
per Series Four Preferred Unit, of all (but not less than all) of the outstanding Series Four Preferred Units; 
 (v)
thereafter during each calendar year until all Series Four Preferred Units have been redeemed (A) beginning on the first day of April and ending 30 calendar days thereafter, the General Partner, upon giving prior written notice as provided
below and except as otherwise provided in Section 5(a)(vi) below, shall have a GP Call Right to require the redemption for cash, at a redemption price of $50.00 per Series Four Preferred Unit, of all (but not less than all) of the outstanding
Series Four Preferred Units and (B) beginning on the first day of October and ending 30 calendar days thereafter, each of the Series Four Preferred Unit holders, upon giving prior written notice as provided below and except as otherwise
provided in Section 5(a)(vi) below, shall have a Holder Put Right to require that the Partnership redeem for 

  
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cash, at a redemption price of $50.00 per Series Four Preferred Unit, all (but not less than all) of the Series Four Preferred Units held by such holder, the purpose of this Section 5(a)(v)
being that the holders of the remaining Series Four Preferred Units, on the one hand, and the General Partner, on the other hand, be able to exercise a Holder Put Right and a GP Call Right, respectively, for a single thirty-day period during each
period of twelve consecutive months until all Series Four Preferred Units have been redeemed; and 
 (vi)
any Series Four Preferred Units subject to the security interest in favor of the Partnership pursuant to the Pledge Agreement (“Encumbered Units”) shall not be eligible for redemption pursuant to this Section 5(a) until and
unless the security interest on such units has been released in accordance with the Pledge Agreement. If and when any Series Four Preferred Units cease to be Encumbered Units (such day a “Release Date” and such units
“Released Units”), the Released Units will become eligible for redemption as follows: (A) if the Release Date is at least 31 calendar days prior to the first day of any period during which a GP Call Right or Holder Put Right
may be exercised pursuant to Section 5(a)(i) through(v) above, then (w) beginning with the Release Date and ending 10 calendar days thereafter, the General Partner, upon giving prior written notice as provided below, shall have a GP Call
Right to require the redemption for cash, at a redemption price of $50.00 per Series Four Preferred Unit, of all (but not less than all) of the Released Units and (x) beginning with the
21st calendar day following the Release Date and ending 10
calendar days thereafter, each of the Series Four Preferred Unit holders, upon giving prior written notice as provided below, shall have a Holder Put Right to require that the Partnership redeem for cash, at a redemption price of $50.00 per Series
Four Preferred Unit, all (but not less than all) of the Released Units held by such holder, and (B) if the Release Date is less than 31 calendar days prior to the first day of or during any period during which a GP Call Right or Holder Put
Right may be exercised pursuant to Section 5(a)(i) through (v) above, then (y) beginning with the third business day following the end of such period and ending 10 calendar days thereafter, the General Partner, upon giving prior
written notice as provided below, shall have a GP Call Right to require the redemption for cash, at a redemption price of $50.00 per Series Four Preferred Unit, of all (but not less than all) of the Released Units, and (z) beginning with the
21st calendar day following the end of such period and
ending 10 calendar days thereafter, each of the Series Four Preferred Unit holders, upon giving prior written notice as provided below, shall have a Holder Put Right to require that the Partnership redeem for cash, at a redemption price of $50.00
per Series Four Preferred Unit, all (but not less than all) of the Released Units held by such holder; provided, however, that if any Release Date (an “Overlap Release Date”) occurs less than 31 calendar days following another
Release Date, the Overlap Release Date will be deemed to have occurred 31 calendar days following the immediately preceding Release Date for purposes of calculating the time periods described in this Section 5(a)(vi) with respect to such
Overlap Release Date subject to the application of the provisions in this Section 5(a)(vi). 
 (b) In order for a holder of
Series Four Preferred Units to exercise a Holder Put Right pursuant to Section 5(a)(i), (iii) or (v)(A) or for the General Partner to exercise a GP Call Right pursuant to Section 5(a)(ii), (iv) or (v)(B), as the case may be, the
party exercising its right shall deliver a Redemption Notice not less than 15 nor more than 45 days prior to the Put/Call Date (which shall be indicated in the Redemption Notice); provided, however, that (i) the Partnership may waive the
requirement to deliver a Redemption Notice in connection with any exercise of a Holder Put Right and (ii) if a Holder Put Right is exercised on or within 15 

  
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days of the Issue Date, the Put/Call Date shall be the second business day following the date of the Redemption Notice. In order for a holder of Series Four Preferred Units to exercise a Holder
Put Right pursuant to Section 5(a)(vi)(A)(x) or (B)(z) or for the General Partner to exercise a GP Call Right pursuant to Section 5(a)(vi)(A)(w) or (B)(y), as the case may be, the party exercising its right shall deliver a Redemption
Notice not less than 2 nor more than 7 days prior to the Put/Call Date. On the Put/Call Date, the Partnership shall pay the redemption price by certified check or electronic wire transfer to or on the order of the holder or holders whose Series Four
Preferred Units have been redeemed. 
 (c) On the Put/Call Date as a condition of the redemption of Series Four Preferred Units,
the Partnership shall pay, in cash, all accumulated and unpaid distributions (and any interest accrued thereon) through the Put/Call Date in respect of all Series Four Preferred Units being redeemed on such date. 

(d) The Assignee of any Limited Partner pursuant to Section 9 of the main part of the Partnership Agreement may exercise the rights
of such Limited Partner pursuant to this Section 5, and such Limited Partner shall be deemed to have assigned such rights to such Assignee and shall be bound by the exercise of such rights by the Assignee. In connection with any exercise of
such rights by an Assignee of a Limited Partner, the cash amount shall be paid by the Partnership directly to such Assignee and not to such Limited Partner. 
 (e) A Redemption Notice shall be provided in the manner provided in Section 9. Any defect in a Redemption Notice or in the mailing thereof, to any particular holder, the Partnership or the General
Partner shall not affect the sufficiency of the notice or the validity of the proceedings for redemption with respect to the other holders. Any notice that was mailed in the manner herein provided shall be conclusively presumed to have been duly
given on the date of deemed delivery provided in Section 9, whether or not the holder receives the notice. Each holder of Series Four Preferred Units’ Redemption Notice shall be in the form attached hereto as Exhibit A. The General
Partner’s Redemption Notice shall state the Put/Call Date and that distributions on the Series Four Preferred Units shall cease to accrue on such Put/Call date except as otherwise provided herein. Notice having been delivered as aforesaid, from
and after the Put/Call Date (unless the Partnership shall fail to pay the redemption price on the date required and except as provided in subsection 5(c)), distributions on the Series Four Preferred Units being redeemed on such date shall cease
to accrue, such Units shall no longer be deemed to be outstanding, and all rights of the holders thereof as holders of Series Four Preferred Units of the Partnership shall cease with respect to such units (except the right to receive the
redemption price and the amounts required to be paid under subsection 5(c)). 
 (f) Each Series Four Preferred Unit holder
covenants and agrees with the Partnership that all Series Four Preferred Units delivered for redemption pursuant to this Section 5 shall be delivered to the Partnership free and clear of all liens, and, notwithstanding anything contained herein
to the contrary, the Partnership shall not be under any obligation to acquire Series Four Preferred Units which are or may be subject to any such liens. 
 6. No Creditor Rights. The rights of each Series Four Preferred Unit holder pursuant to this Certificate arise solely from its ownership as a Limited Partner of Partnership Interests in the
Partnership and not from it being a creditor of the Partnership and none of such rights with 

  
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respect to any required redemption shall constitute a “claim” as such term is defined in Section 101 of the United States Bankruptcy Code as in effect as of the date of this
Certificate; provided, however, that any rights in respect of such Series Four Preferred Units shall constitute equity interests of each Partner hereunder, it being agreed and understood that no Partner is waiving any equity interest it has in the
Partnership or any rights to assert any such interests in any bankruptcy proceeding or otherwise. 
 7. Voting Rights.

 (a) Except (i) as set forth below and (ii) where a vote by class is required by any non-waivable provision of
applicable law, the holders of the Series Four Preferred Units shall not be entitled to vote on any matter. Notwithstanding the foregoing, the consent of the holders of a majority of the outstanding Series Four Preferred Units (excluding any Series
Four Preferred Units owned by the Partnership or any of its affiliates), voting as a separate class, shall be required for (I) any amendment to this Agreement (including an amendment effected by way of, or in connection with, a merger or
consolidation) which has a material adverse effect on the rights, preferences, privileges or voting powers of the Series Four Preferred Units or which increases the number of authorized or issued Series Four Preferred Units, (II) any
reclassification of the Series Four Preferred Units or issuance of new Series Four Preferred Units other than pursuant to the terms of the Contribution Agreement and related agreements, or (III) the authorization, reclassification or creation
of, or increase in the amount of, any Units of any class, or any security convertible into Units of any class, ranking senior to the Series Four Preferred Units in the distribution of assets on any liquidation, dissolution or winding up of the
Partnership or in the payment of any distributions; but subject, in any event, to the following provisions: 
 (i) The
occurrence of any merger, consolidation or other business combination or reorganization involving the Partnership or the General Partner shall not be deemed to materially and adversely affect the rights, preferences, privileges or voting powers of
the holders of the Series Four Preferred Units if either (1) the Series Four Preferred Units remain outstanding on the same terms (or are exchanged for securities with the same terms in a successor entity) and continue to be securities issued
by an entity taxed as a partnership for U.S. Federal income tax purposes that has sufficient assets and access to capital such that the Partnership (or its successor) projects, in good faith, that it will have sufficient access to capital to satisfy
its redemption obligations under Section 5 when such obligations arise, or (2) at the closing of such merger, consolidation or other business combination or reorganization, all Series Four Preferred Units are redeemed for cash in an amount
per Series Four Preferred Unit equal to the Liquidation Preference plus all distributions (whether or not earned or declared) accrued and unpaid thereon pursuant to Section 3 to the date of redemption plus the Make-Whole Amount, if any. (For
the avoidance of doubt, nothing in this Section shall supersede or alter the rights and remedies, if any, of the holders of Series Four Preferred Units pursuant to the terms of Exhibit G to the Contribution Agreement (the “Tax Protection
Provisions”) and, for example, a transaction meeting the requirements of clause (2) of the preceding sentence may nevertheless be a breach of such Tax Protection Provisions.) 

(ii) Any creation or issuance of any class or series of Preferred Units, ranking senior to the Series Four Preferred Units with respect
to payment of distributions, redemption rights or the distribution of assets upon liquidation, dissolution or winding up 

  
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(“Senior Securities”) shall not be deemed to materially and adversely affect the rights, preferences, privileges or voting powers of the holders of the Series Four Preferred
Units if either (1) such Senior Securities do not prohibit, in any respect, the redemption of the Series Four Preferred Units in accordance with Section 5 and, at the time of such creation or issuance, the Partnership projects, in good
faith, that it will have sufficient access to capital to satisfy its redemption obligations under Section 5 when such obligations arise, or (2) at the time of such creation or issuance, all Series Four Preferred Units are redeemed for cash
in an amount per Series Four Preferred Unit equal to the Liquidation Preference plus all distributions (whether or not earned or declared) accrued and unpaid thereon pursuant to Section 3 to the date of redemption plus the Make-Whole Amount, if
any. (For the avoidance of doubt, nothing in this Section shall supersede or alter the rights and remedies, if any, of the holders of Series Four Preferred Units pursuant to the Tax Protection Provisions and, for example, a transaction meeting the
requirements of clause (2) of the preceding sentence may nevertheless be a breach of such Tax Protection Provisions.) 

(iii) Any creation or issuance of any Common Units, any Junior Units or of any class or series of Preferred Units, ranking junior to, or
on parity with, the Series Four Preferred Units with respect to payment of distributions, redemption rights or the distribution of assets upon liquidation, dissolution or winding up shall not be deemed to materially and adversely affect the rights,
preferences, privileges or voting powers of the holders of the Series Four Preferred Units. 
 8. Ranking. The Series
Four Preferred Units shall be deemed to rank: 
 (a) Senior to any Common Units and Junior Units; 

(b) On a parity with the Series Two Preferred Units and with any other class or series of Units of the Partnership, if the holders of
such other class or series of Units and the Series Four Preferred Units shall be entitled to the receipt of distributions and of amounts distributable upon liquidation, dissolution or winding up in proportion to their respective amounts of accrued
and unpaid distributions per Unit or liquidation preferences, without preference or priority one over the other (“Parity Units”); and 
 (c) Junior to (I) any indebtedness issued by the Partnership and (II) senior preferred units issued (A) to the General Partner having the same distribution rate, term, preferences and other
material terms (including conversion rights) as preferred shares of stock issued for cash by the General Partner in a public offering if the entire cash proceeds (net of any arm’s length commissions paid) of which are contributed by the General
Partner to the Partnership, or (B) for cash or property in an arm’s length transaction to one or more investors who are (but for the preferred units so issued) not affiliated with the Partnership or the General Partner. 

9. Notices. All notices, demand, requests or other communications which may be or are required to be given, served or sent
hereunder will be in writing and delivered either personally or by certified U.S. mail, return receipt required, with postage prepaid, or by nationally recognized overnight courier service that provides tracking and proof of receipt. Notices shall
be deemed delivered upon the earlier of (i) delivery, (ii) refusal of delivery by 

  
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addressee, or (iii) one Business Day after deposit with a nationally recognized overnight courier. Notices to Series Four Preferred Unit holders shall be sent to their address of record with
the Partnership. Any Series Four Preferred Unit holder may change its address of record by written notice as given as aforesaid. Notices delivered to the Partnership shall be addressed to Boston Properties Limited Partnership, c/o Boston Properties,
Inc. Attn.: General Counsel, 800 Boylston Street, Suite 1900, Boston, MA 02199 or to such other address as the Partnership may have notified holders in the manner provided in this Section 9. Notices to be delivered to the General Partner
shall be addressed to Boston Properties, Inc., Attn: General Counsel, 800 Boylston Street, Suite 1900, Boston, MA 02199, or to such other address as the General Partner may have notified holders in the manner provided in this Section 9.

  
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 IN WITNESS WHEREOF, Boston Properties, Inc., as General Partner of the Partnership, has
caused this Certificate of Designations to become effective, and the Partnership Agreement is hereby amended by giving effect to the terms set forth herein. 

 

					
	BOSTON PROPERTIES, INC.
		
	By:	 	 /s/ Michael E. LaBelle

	Name:	 	Michael E. LaBelle
	Title:	 	 Senior Vice President, Chief Financial
 Officer and Treasurer

  
 [Signature
Page to Certificate of Designations] 

 Exhibit A 
 to the Certificate of Designations for the Series Four Preferred Units 

NOTICE OF ELECTION BY PARTNER TO REDEEM 
 SERIES FOUR PREFERRED UNITS FOR CASH 
 The undersigned Series Four
Preferred Unit holder hereby (i) elects to put all of such holder’s Series Four Preferred Units in Boston Properties Limited Partnership (the “Partnership”) for the redemption price determined in accordance with the terms
of the Second Amended and Restated Agreement of Limited Partnership of the Partnership and the Certificate of Designations (the “Certificate”) relating to the Series Four Preferred Units that is a part thereof; and (ii) directs
that such redemption price be delivered either by certified check to the address specified below or by wire transfer to the wire transfer instructions attached hereto. The undersigned hereby represents, warrants, and certifies that the undersigned
(a) has marketable and unencumbered title to such Series Four Preferred Units, free and clear of the rights or interests of any other person or entity other than the Partnership; (b) has the full right, power, and authority to cause the
redemption of such Series Four Preferred Units as provided herein; and (c) has obtained the consent or approval of all persons or entities, if any, having the right to consent or approve such redemption. The undersigned hereby acknowledges
that, except as provided in the Certificate, distributions on the Series Four Preferred Units to be put shall cease to accrue on the put date indicated below. 
  

			
	Name of Series Four Preferred Unit holder:	 	 
		 	(Please Print: Exact Name as Registered with Partnership)

			
		
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 EXHIBIT A - 1LETTER AGREEMENT BETWEEN DEAN FOODS COMPANY AND SHAUN MARA

 Exhibit 10.1 

 
 

 
 November 7, 2012 
 Shaun Mara 
 2901 Purdue 
 Dallas, Texas 75225 
 Dear Shaun: 
 I am pleased to formalize our discussions regarding your continuing role with Dean Foods Company (the “Company”). 
 Pursuant to this Agreement, you will continue as a full-time employee (except as may otherwise be permitted, as described below) of the Company, reporting to the Chief Executive Officer of the Company,
during the period from the date of this Agreement through no later than June 30, 2013 (the “Resignation Date”). 
 The purpose of
this Agreement is to induce you to remain with the Company through the Resignation Date, despite any material reduction in your responsibilities that may have occurred or will occur in connection with the initial public offering of Class A
common stock of The WhiteWave Foods Company or otherwise, for an appropriate transition of your duties and responsibilities to the person that the Company shall identify as the successor to your current position (the “Successor”). Under
this Agreement, you shall continue to serve in your current position until March 1, 2013 (the “Transition Date”). Upon the Transition Date, you shall resign as an officer of the Company, but continue as a full-time consulting employee
until the Resignation Date. The Chief Executive Officer may allow the Resignation Date to occur earlier than June 30, 2013, but only if (i) you request such modification of the Resignation Date, in writing and (ii) the Chief Executive
Officer concurs with such request in writing. If the Chief Executive Officer agrees to your request for an earlier Resignation Date, you will receive the benefits provided under this Agreement, but assuming that such earlier date was the originally
agreed upon Resignation Date. 
 As is more fully described below, if you remain employed by the Company through the Resignation Date, you shall
resign your employment as of that date. The Company shall treat such resignation as a voluntary termination for Good Reason within the meaning of the Dean Foods Company Amended and Restated Executive Severance Pay Plan, dated September 4, 2006
and as amended and restated November 16, 2010 (the “ESP”) and you shall be entitled to receive all of the termination and other separation payments that are payable (and at the same time as such payments would be payable) in respect
of a such a termination for Good Reason under the ESP. 

 November 7, 2012 
 Shaun Mara Letter Agreement 
  
 Duties and Responsibilities 
 Until the Transition Date, your duties and responsibilities
under this Agreement shall be the same as apply with respect to your current position as an officer of the Company, except to the extent that such duties may be impacted by the IPO. Thereafter, until the Resignation Date, your duties and
responsibilities shall be to effect a smooth transition of your former duties and responsibilities to the Successor, including being available to advise the Successor and/or such other senior officers of the Company as appropriate. All of your
services hereunder shall be provided on a full-time basis. 
 Base Salary 
 For your service as an employee through the Resignation Date, you will continue to be paid an annual base salary at the same rate as is in effect on the date hereof. You shall not be eligible for any
increase in your base salary at any time after the date hereof. All payments of base salary will be paid semi-monthly, in accordance with the Company’s standard payroll procedures. 
 Annual Bonus Opportunity 
 For the 2012 calendar year, your target short term incentive
bonus will be the same target that has previously been communicated to you for such year. Your short term incentive bonus target for 2013 will not be modified from the 2012 target percentage. Payment of the short term incentive bonus is subject to
the achievement of the operating targets that have been previously approved by the Compensation Committee of the Board of Directors of the Company. Payment of any short term incentive amount will be made at the same time as, and subject to the same
terms and conditions as apply to, all other participants in the short term incentive plan. 
 Executive Retention Plan 

You shall continue to be eligible to receive payment under the Executive Retention Plan in respect of any awards granted prior to the date hereof. Any
awards payable based upon performance in respect of calendar year 2012 will be payable to you in the ordinary course, at the same time as, and subject to the same terms and conditions as apply to, all other Dean Foods participants in the Executive
Retention Plan. For the avoidance of doubt, if you remain employed, in any capacity, until the Resignation Date, whether the Resignation Date is June 30, 2013 or an earlier date as agreed to by the Chief Executive Officer pursuant to this
Agreement, you will be eligible to receive the retention payment payable to you for the 2012 performance year, payable at the same time as other similarly-situated executives receive the retention payment. 

  
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 November 7, 2012 
 Shaun Mara Letter Agreement 
  
 As your Resignation Date is expected to occur prior to the end of the 2013 plan year, you understand and agree that you forfeit without payment any right in respect of the 2013 portion of your Executive
Retention Plan interests. 
 Stock Options and Restricted Stock 
 For the purpose of vesting and exercising previously granted stock options, restricted stock and other equity awards (“Prior Equity Compensation Grants”), it is expected that your employment
will continue until the Resignation Date. You will be entitled to exercise any vested options or options that vest in the future according to the stock option agreement and plan governing the terms of the options. You understand and acknowledge that
the Company is under no obligation to provide you any additional equity grants after the date hereof. You acknowledge that, if WhiteWave is spun-off to the Company’s shareholders while your awards remain outstanding in accordance with their
terms, your then outstanding Prior Equity Compensation Grants will be adjusted in the same manner as applies to other employees of the Company who are remaining as employees of the Company following such spin-off. 

Paid Time Off 
 You shall continue to
accrue and be allowed to access PTO in accordance with the Company’s standard policies and practices. 
 Retirement Benefits

 In accordance with, and subject to, the terms of the applicable plan, you will continue to be allowed to contribute to both the Company
401(k) plan and the Company Supplemental Employee Retirement Plan (SERP) through the Resignation Date. As it is anticipated that you will remain an employee of the Company through your Resignation Date, that date will be your separation from service
for the purpose of triggering the receipt of payments of any vested benefits that you may have under the Company Executive Deferred Compensation Plan and SERP. 
 Other Benefits 
 So long as you continue to provide services to the Company on a full-time
basis (including your time as a full-time consulting employee), you will continue to be eligible to participate in all employee benefit plans, programs, and arrangements, including payment of individual life and disability insurance costs, to the
extent made available to the Company’s senior executives or employees, on the same terms and conditions as other senior executives. 

Through the Resignation Date, you will be entitled to reimbursement of business expenses in accordance with applicable Company policies and practices,
and will be provided with a Company-issued cell phone, Blackberry, Company email address, and office and secretarial assistance. 

  
 3 

 November 7, 2012 
 Shaun Mara Letter Agreement 
  
 Termination of Employment 
 If you remain employed by the Company through the Resignation
Date, you shall resign your employment on that date. The Company shall treat such resignation as a voluntary termination for Good Reason within the meaning of the ESP. Upon such resignation for Good Reason, you shall have the right to receive all of
the termination and other separation payments that are payable (and at the same time as such payments would be payable) in respect of such a termination under the ESP. 
 Notwithstanding the foregoing, the Company may terminate your employment hereunder at any time with or without Cause before the Resignation Date. If the Company shall terminate your employment without
Cause before the Resignation Date, while this Agreement is still in effect, you shall be entitled to receive (i) all of the benefits of employment, including but not limited to payments for salary, benefits, bonus payments (including retention
payment for the 2012 performance year), and vesting of equity (or payments in lieu of vesting should vesting not be allowable under the applicable Company long-term incentive plan) had you remained employed through the Resignation Date; and
(ii) all of the termination and other separation payments that are payable (and at the same time as such payments would be payable) in respect of a such a termination under the ESP. 
 If the Company shall terminate your employment with Cause, you will only be entitled to be paid any accrued and unpaid base salary in respect of your services through your date of termination and any
other amounts and benefits which have become accrued and vested under the terms of the applicable Company benefit plans and programs and that are not forfeitable under such plans and programs upon your termination for Cause. As used herein, the term
“Cause” shall have the same meaning and effect as the definition of “Cause” in the ESP, such definition is incorporated into this Agreement by reference. 
 Interpretation 
 The parties hereto intend that payments and benefits under this Agreement,
the ESP and all other plans and arrangements referenced herein (collectively, the “Arrangements”) comply with Section 409A of the Internal Revenue Code (“Section 409A”) to the extent subject thereto, and the
Arrangements shall be interpreted and administered to be in compliance therewith. In all events, payments under this Agreement and the ESP shall be made no later than March 15 of the year following the year in which the payment is
vested. Notwithstanding the foregoing, only to the extent required to avoid accelerated taxation and/or tax penalties under Section 409A, amounts that would otherwise be 

  
 4 

 
November 7, 2012 
 Shaun Mara Letter Agreement 

 
 payable and benefits that would otherwise be provided pursuant
to the Arrangements during the six-month period immediately following your separation from service shall instead be paid on the first business day after the date that is six months following your separation from service. 

Entire Agreement 
 This Agreement sets
forth the entire understanding of the parties hereto and supersedes all other agreements, written or oral, between the parties relating to the subject matter hereof except the agreements and plans governing your rights in respect of any Prior Equity
Compensation Grants. 
 If you agree that the foregoing agreement sets forth our understanding of the terms and conditions of your continuing
employment with the Company in the event that the Offering should be consummated, please sign both copies of this Agreement where indicated below and return one copy to me (keeping one for your records), and this Agreement shall be and become a
binding agreement between you and the Company. 
  

	
	DEAN FOODS COMPANY
	
	 /s/ Gregg A. Tanner

	 By: Gregg A. Tanner

	 Chief Executive Officer

 Agreed and Accepted: 
  

	
	/s/ Shaun Mara
	 Shaun Mara

	
	 Date: November 7, 2012

  
 5

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