Document:

<Page>

                     BOSTON CAPITAL TAX CREDIT FUND IV L.P.

                                SERIES 45 and 46

                     CAPITAL CONTRIBUTIONS ESCROW AGREEMENT

     This Agreement made as of the ____st day of ________ 2003, by and between
Boston Capital Tax Credit Fund IV L.P., a Delaware limited partnership (the
"Fund"), Boston Capital Associates IV L.P., a Delaware limited partnership (the
"General Partner"), and Wainwright Bank & Trust Company, Boston, Massachusetts
(the "Escrow Agent") and Boston Capital Services, Inc. as dealer-manager (the
"Dealer-Manager").

     1.   THE OFFERING. The Fund intends to offer for subscription in two
series; namely Series 45 and Series 46, 7,000,000 beneficial assignee
certificates ("BACs") at a price of $10.00 per BAC, representing assignments of
units of the beneficial interest of the Limited Partnership Interest in the Fund
issued to the Assignor Limited Partner. The initial minimum purchase by each
potential investor completing an Investor Information Form (a "Subscriber") is
five hundred BACs ($5,000), except for employees of the General Partner and/or
its Affiliates for whom the initial minimum investment is one hundred BACs
($1,000); additional purchases by a Subscriber must be made in multiples of 100
BACs ($1,000). The offering will be made through a group of soliciting dealers
(the "Soliciting Dealers"), organized by and including Boston Capital Services,
Inc. as dealer-manager (the "Dealer-Manager"), which are members of the National
Association of Securities Dealers, Inc. The Fund hereby appoints Wainwright Bank
& Trust Company, Boston, Massachusetts as its Escrow Agent to receive from the
Soliciting Dealers and Dealer-Manager (i) the monies paid by the subscribers for
the BACs to which they have each subscribed (the "Subscription Payments"), (ii)
to hold and invest such Subscription Payments.

     The Fund intends to offer and sell and to issue BACs in two series; namely,
Series 45 and Series 46. Each series will consist of up to 3,500,000 BACs
subject to expansion. The offering of each series will not exceed twelve months,
or such lesser period as may be determined by the General Partner, in its sole
discretion (a "Series Offering Period").

     The offering by the Fund will terminate twelve months from the effective
date of the Fund's Registration Statement, unless terminated earlier or extended
by the General Partner, and is subject to the condition that subscriptions for
at least 250,000 BACs be accepted by the General Partner by the last day of the
applicable Series Offering Period (the "Termination Date"). The General Partner
will notify the Escrow Agent in writing received by the Escrow Agent no later
than 5:00 p.m. on the second business day next preceding the date the General
Partner determines as the Termination Date for each Series Offering Period.

     2.   ESTABLISHMENT OF THE ESCROW. The Escrow Agent will establish
segregated escrow accounts for each series in the offering (the "Series Escrow
Accounts") into which all Subscription Payments shall be deposited. Each Series
Escrow Account will be identified in a manner clearly indicating the series in
the offering to which the Series

<Page>

Escrow Account relates. Records with respect to each Series Escrow Account will
be maintained separately by the Escrow Agent. Directors of state securities
divisions shall have the right to inspect and make copies of the records of the
Escrow Agent at any reasonable time wherever the records are located. Credit on
the books of the Escrow Agent will be given as of the date of deposit of each
check. Interest on each deposited check will begin to accrue one (1) business
day after each such date of deposit. If the Escrow Agent receives notice that a
check for a Subscription Payment has been dishonored, it shall give immediate
oral notice (to be confirmed in writing promptly thereafter) to the General
Partner; and, unless otherwise instructed at that time by the General Partner,
shall undertake routine steps to collect such check through the Escrow Agent's
customary collections channels. In the event that collections from the
Subscribers in the form of checks or other demand remittances are credited by
the Escrow Agent to the Series Escrow Account and the items giving rise to such
credits are subsequently dishonored, the Escrow Agent may, in its discretion,
charge to the Series Escrow Account the amount of any item so dishonored. Upon
final payment of any such item, the Escrow Agent shall credit to the Series
Escrow Account the amount thereof with appropriate advice to the Fund.
Subscription proceeds deposited may not be withdrawn by Subscribers.

     The General Partner agrees to inform the Escrow Agent when offers and sales
in each series have begun and terminated. Subscription Payments forwarded for
deposit to the Fund's Series Escrow Accounts will clearly indicate the series in
which the Subscriber is investing.

     3.   CLOSING AND DISBURSEMENT OF FUNDS. The Fund intends to make the
offering on the condition that a minimum of 250,000 BACs ($2,500,000) shall have
been accepted by the General Partner by the applicable Termination Date. Until
subscriptions for at least 250,000 BACs in any series are received, no
Subscriber will be recognized as a BAC Holder and subscriptions will be
deposited with the Escrow Agent. New Mexico Subscriber's subscriptions shall not
be released until subscriptions for at least 700,000 BACs in any series are
received. The underwriter or an officer, director, or affiliate of the issuer
may purchase BACs in order to meet the minimum investment requirement, and those
persons shall purchase BACs on the same terms as unaffiliated public investors.
Any such purchase shall not be included in the calculation of promotional shares
subject to escrow. If $2,500,000 (250,000 BACs) of Subscription Payments have
not been collected and are not then held in cleared funds in the possession of
the Escrow Agent on the applicable Termination Date, and upon written notice
from, and instructions by, the General Partner, the Escrow Agent shall return to
the Subscribers the Subscription Payments with interest on the fifth business
day after the later of the applicable Termination Date or receipt of the
instructions from the General Partner.

     If at least $2,500,000 of Subscription Payments have been collected and are
then held in cleared funds in the possession of the Escrow Agent by the
applicable Termination Date, then upon written notice from, and instruction by,
the General Partner, the Escrow Agent shall pay to the Fund all funds then held
in the Series Escrow Account including interest earned thereon prior to the
Termination Date without deduction for expenses, including fees of the Escrow
Agent. The Fund shall determine the amount of interest due to each Subscriber
and within 75 days after the end of the fiscal quarter following a Closing

<Page>

Date shall itself pay such interest to Subscribers. Subsequent to but not
including such Termination Date, any interest earned will be paid to the Fund. A
subscriber will be entitled to the amount of interest earned on his subscription
proceeds starting from the day after such proceeds were deposited in the Series
Escrow Account until but not including the Closing Date. The Escrow Agent shall
notify directors of state securities divisions, as directed by the General
Partner, upon the release from escrow of the Subscription Payments.

     Subscriptions for BACs will be accepted or rejected by the General Partner
within 30 days of receipt, but the issuance of BACs to a Subscriber shall be
subject to acceptance of subscriptions for a number of BACs sufficient to
effectuate a closing. If the Subscription Payments allocated to such rejected or
cancelled subscription ("Rejected Funds") have been delivered to Escrow Agent,
the General Partner will inform Escrow Agent of the rejection or cancellation,
and Escrow Agent, upon receiving such notice, will refund to the Subscriber the
Rejected Funds within 10 days of such notice, without interest.

     4.   INVESTMENT OF FUNDS. The Fund hereby directs the Escrow Agent to
invest (in the name of the Escrow Agent or the name of its nominee or nominees)
funds in the Series Escrow Account for the benefit of the Subscribers in any one
or a combination of the following: bank time deposits; short-term securities
issued or guaranteed by the United States Government; bank money market
accounts; and short-term certificates of deposit issued by a bank. Investments
for periods of five days or less shall not be required.

     5.   COMPENSATION. The Fund agrees to pay to the Escrow Agent compensation
of $1.00 per Subscriber whose funds are received by the Escrow Agent for all
services rendered by the Escrow Agent under this Agreement and, in addition, the
reasonable compensation of its counsel and all other reasonable expenses
incurred by the Escrow Agent hereunder.

     6.   EXCULPATION. The General Partner agrees to indemnify the Escrow Agent
for, and to hold it harmless against, any loss, liability, or expense incurred
without gross negligence or willful misconduct on the part of the Escrow Agent,
arising out of this Escrow Agreement, as well as the costs and expenses of
defending any claim or liability or of prosecuting any action in the premises.
The Escrow Agent shall not be obligated to take any action hereunder which might
in its reasonable judgment subject it to any expense or liability unless it
shall have been furnished with indemnity acceptable to it. Prior to the
Termination Date, Subscription Payments held by the Escrow Agent shall remain
the property of the Subscribers making such Payments and shall not be subject to
a lien of the Escrow Agent or any other creditors of the Fund or the General
Partner.

     The Escrow Agent shall not be obligated to take any action which it is not
expressly directed to take in this Agreement unless and until it shall have
received written instruction from the Fund. The Escrow Agent shall be liable
only for its own gross negligence or willful misconduct and shall incur no
liability for action in accordance with the terms of this Escrow Agreement or
with the terms of any instructions received by it from the General Partner,
whether or not contrary to the provisions of this Agreement or to the agreements
between the Fund and the Subscribers. The Escrow Agent may rely upon, and shall
be protected in acting upon, any resolution, certificate, opinion, notice,
request,

<Page>

consent, or other paper or document believed by it to be genuine and to have
been signed by the proper person or persons. Any notice or instruction from the
Fund shall be sufficient if it bears or purports to bear the signature of any
one of the following: Jeffrey Goldstein and Marc N. Teal, whose signatures
appear hereon, with or without designation of principal or of representative
capacity. The Escrow Agent may consult with counsel, and the opinion of such
counsel shall be full and complete protection in respect to any action taken or
suffered by it hereunder in accordance with such opinion. The Escrow Agent may
petition any court of competent jurisdiction to resolve any disagreement
relating hereto and may refuse to act until such court has ordered it to act.
Such rights and remedies shall be alternative and any action taken or not taken
in conformance with an opinion of counsel or court order shall not constitute
negligence or misconduct and shall be complete and final acquittance and
discharge of the Escrow Agent's responsibilities with respect thereto.

     Notwithstanding the foregoing, it is understood and agreed by the parties
that no partner of the General Partner acting in its capacity as such shall have
any personal liability under this agreement and that any person asserting a
claim against the General Partner hereunder shall look solely to the assets of
such General Partner (specifically excluding the personal assets of the partners
thereof).

     7.   NOTICES. All notices and other communications hereunder shall be in
writing, or if given by telephone, telegraph or telex shall be confirmed in
writing. No notice shall be given until given in writing and shall be sent,
Postage prepaid, addressed as follows:

     (a)  If to the Fund or the General Partner, notice is deemed given when
          received by Marc N. Teal, c/o Boston Capital Partners, Inc., One
          Boston Place, Suite 2100, Boston, Massachusetts.

     (b)  If to the Escrow Agent, notice is deemed given when received by David
          Dolbashian, Assistant Vice President, Wainwright Bank & Trust Company,
          63 Franklin Street, Boston, Massachusetts 02110, or to such other
          address as the Escrow Agent shall subsequently designate in writing to
          the General Partner.

     8.   MISCELLANEOUS.

     (c)  This Agreement shall be binding upon and inure to the benefit of the
          respective successors and assigns of the parties hereto.

     (d)  This Agreement shall be governed and construed in accordance with the
          laws of the Commonwealth of Massachusetts and shall not be amended
          except by written instrument executed by the parties hereto.

     (e)  This Agreement may be executed in one or more counterparts, each of
          which shall constitute the original, and all of which collectively
          shall constitute one and the same instrument.

<Page>

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

BOSTON CAPITAL ASSOCIATES IV L.P.          WAINWRIGHT BANK & TRUST
                                               COMPANY

By: BCA Associates Limited Partnership,    By:
    its general partner                        --------------------
                                                  Its:
                                                      --------------------

    By: C&M Management, Inc., it general
        partner

       By:
           ------------------------
           Name:
           Title:

Signatories:

       By:
           ------------------------
           Jeffrey Goldstein

       By:
           ------------------------
           Marc N. Teal

BOSTON CAPITAL TAX CREDIT FUND IV L.P.

By:  Boston Capital Associates IV L.P.,
     as general partner

     By: BCA Associates Limited Partnership, as general partner

         By: C&M Management, Inc., its general partner

         By:
             ------------------------
             Name:
             Title:

BOSTON CAPITAL SERVICES, INC.

By:
    -------------------------
    Name:
    Title:Exhibit 10.43

 

[ULTRATECH LETTERHEAD]

 

 

[DATE]

 

 

Dear [EMPLOYEE]:

 

As you know, as a senior employee of Ultratech Stepper, Inc. (the
“Company”), you have been asked to assist the Company in the preparation and
review of its disclosure documents filed with the Securities and Exchange
Commission, in particular the Company’s periodic reports on Form 10-Q and Form
10-K.  In connection with such
preparation and review, the Company has asked you to certify that, among other
things, you have reviewed the report and that within your areas of expertise
and duties at the Company, the report is not misleading and does not contain
any untrue statement of a material fact (the “Certification,” a form of which
has been provided to you).

 

The Company agrees that it will indemnify you and hold
you harmless to the fullest extent permitted by law if you should become a
party to or a witness or other participant in, or are threatened to be made a
party to or witness or other participant in, any threatened, pending or
completed action, suit, proceeding or alternative dispute resolution mechanism,
or any hearing, inquiry or investigation that you believe might lead to the
institution of any such action, suit, proceeding or alternative dispute
resolution mechanism, whether civil, criminal, administrative, investigative or
other by reason of or arising from any Certification made by you to the
Company, except in the case of fraud or intentional or knowing misstatement,
omission or misconduct by you, including, without limitation, for any and all
losses, claims, damages, expenses (including attorneys’ fees), fines, penalties
and liabilities incurred in connection with, and any amount paid in settlement
of, any such action, suit, proceeding or alternative dispute resolution
mechanism.  The Company shall advance
all expenses actually incurred by you no later than five (5) days after receipt
of written request therefor. 
Notwithstanding the foregoing, the obligations of the Company hereunder
shall be subject to the condition that the Company’s outside legal counsel
shall not have determined that such indemnification is not permitted under
applicable law.  In addition, the
Company’s indemnification obligation hereunder shall be subject to the further
condition that any advance payment of any expenses by the Company shall be
subject to the condition that, if, when and to the extent the Company’s outside
legal counsel determines that under applicable law you would not be permitted
to be indemnified hereunder, the Company shall be entitled to be reimbursed by
you (and you hereby agree to so reimburse the Company) for all such amounts
theretofore paid.  This indemnification
shall not apply to any action, suit, proceeding or alternative dispute
resolution mechanism between you and the Company.

 

Please indicate your acceptance of the terms and conditions contained
herein by signing below.

 

	
  Sincerely,

  	
   

  	
  ACKNOWLEDGED AND AGREED:

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  Bruce Wright, Chief Financial Officer

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00049-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00049-of-00352.parquet"}]]