REGISTRATION
RIGHTS AGREEMENT

    


    This Registration Rights Agreement
(this “Agreement”) is made
and entered into as of ________, 2009, between Cleveland BioLabs, Inc., a
Delaware corporation (the “Company”), and each
of the several purchasers signatory hereto (each such purchaser, a “Purchaser” and,
collectively, the “Purchasers”).

    


    This Agreement is made pursuant to the
Securities Purchase Agreement, dated as of the date hereof, between the Company
and each Purchaser (the “Purchase
Agreement”).

    


    The Company and each Purchaser hereby
agrees as follows:

    


    
      
        	
              	
                1.

              	
                Definitions.

              


      

    

    


    Capitalized terms used and not
otherwise defined herein that are defined in the Purchase Agreement shall have
the meanings given such terms in the Purchase Agreement. As used in this
Agreement, the following terms shall have the following meanings:

    


    “Advice” shall have
the meaning set forth in Section 6(d).

    


    “Effectiveness Date”
means, with respect to the Initial Registration Statement required to be filed
hereunder, the 90th
calendar day following the earlier of the (a) actual Stockholder Approval Date
and (b) Required Stockholder Approval Date (or, in the event of a “full review”
by the Commission, the 180th
calendar day following the earlier of the (a) actual Stockholder Approval Date
and (b) Required Stockholder Approval Date) and with respect to any additional
Registration Statements which may be required pursuant to Section 3(c), the
60th
calendar day following the date on which an additional Registration Statement is
required to be filed hereunder; provided, however, that in the
event the Company is notified by the Commission that one or more of the above
Registration Statements will not be reviewed or is no longer subject to further
review and comments, the Effectiveness Date as to such Registration Statement
shall be the fifth Trading Day following the date on which the Company is so
notified if such date precedes the dates otherwise required above.

    


    “Effectiveness Period”
shall have the meaning set forth in Section 2(a).

    


    “Event” shall have the
meaning set forth in Section 2(b).

    


    “Event Date” shall
have the meaning set forth in Section 2(b).

    


    “Filing Date” means,
with respect to the Initial Registration Statement required hereunder, the
30th
calendar day following the earlier of the (a) actual Stockholder Approval Date
and (b) Required Stockholder Approval Date and, with respect to any additional
Registration Statements which may be required pursuant to Section 3(c), the
earliest practical date on which the Company is permitted by SEC Guidance to
file such additional Registration Statement related to the Registrable
Securities.


    
      
         


      

      
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    “Holder” or “Holders” means the
holder or holders, as the case may be, from time to time of Registrable
Securities.

    


    “Indemnified Party”
shall have the meaning set forth in Section 5(c).

    


    “Indemnifying Party”
shall have the meaning set forth in Section 5(c).

    


    “Initial Registration
Statement” means the initial Registration Statement filed pursuant to
this Agreement.

    


    “Initial Shares” means
a number of Registrable Securities equal to the lesser of (i) the total number
of Registrable Securities and (ii) one-third of the number of issued and
outstanding shares of Common Stock that are held by non-Affiliates of the
Company on the day immediately prior to the filing date of the Initial
Registration Statement.

    


    “Losses” shall have
the meaning set forth in Section 5(a).

    


    “Plan of Distribution”
shall have the meaning set forth in Section 2(a).

    


    “Prospectus” means the
prospectus included in a Registration Statement (including, without limitation,
a prospectus that includes any information previously omitted from a prospectus
filed as part of an effective registration statement in reliance upon Rule 430A
promulgated by the Commission pursuant to the Securities Act), as amended or
supplemented by any prospectus supplement, with respect to the terms of the
offering of any portion of the Registrable Securities covered by a Registration
Statement, and all other amendments and supplements to the Prospectus, including
post-effective amendments, and all material incorporated by reference or deemed
to be incorporated by reference in such Prospectus.

    


    “Registrable
Securities” means, as of any date of determination, (a) all of the shares
of Common Stock then issuable upon conversion in full of the Preferred Stock
(assuming on such date the shares of Preferred Stock are converted in full
without regard to any conversion limitations therein), (b) all Warrant Shares
then issuable upon exercise of the Warrants (assuming on such date the Warrants
are exercised in full without regard to any exercise limitations therein), (c)
any additional shares of Common Stock issuable in connection with any
anti-dilution provisions in the Preferred Stock or the Warrants (in each case,
without giving effect to any limitations on conversion set forth in the
Certificate of Designation or limitations on exercise set forth in the Warrants)
and (d) any securities issued or then issuable upon any stock split, dividend or
other distribution,  recapitalization or similar event with respect to
the foregoing; provided, however, that any
such Registrable Securities shall cease to be Registrable Securities (and the
Company shall not be required to maintain the effectiveness of any, or file
another, Registration Statement hereunder with respect thereto) for so long as
(a) a Registration Statement with respect to the sale of such Registrable
Securities is declared effective by the Commission under the Securities Act and
such Registrable Securities have been disposed of by the Holder in accordance
with such Registration Statement, (b) such Registrable Securities have been
previously sold in accordance with Rule 144, or (c) such securities become
eligible for resale without volume or manner-of-sale restrictions and without
current public information pursuant to Rule 144 as set forth in a written
opinion letter to such effect, addressed, delivered and acceptable to the
Transfer Agent and the affected Holders (assuming that such securities and any
securities issuable upon exercise, conversion or exchange of which, or as a
dividend upon which, such securities were issued or are issuable, were at no
time held by any Affiliate of the Company, and all Warrants are exercised by
“cashless exercise” as provided in Section 2(c) of each of the Warrants), as
reasonably determined by the Company, upon the advice of counsel to the
Company.


    
      
         


      

      
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    “Registration
Statement” means any registration statement required to be filed
hereunder pursuant to Section 2(a) and any additional registration statements
contemplated by Section 3(c), including (in each case) the Prospectus,
amendments and supplements to any such registration statement or Prospectus,
including pre- and post-effective amendments, all exhibits thereto, and all
material incorporated by reference or deemed to be incorporated by reference in
any such registration statement.

    


    “Required Stockholder
Approval Date” means the 90th
calendar day following the date of termination or expiration of the offering of
the Securities pursuant to the Purchase Agreements.

    


    “Rule 144” means Rule
144 promulgated by the Commission pursuant to the Securities Act, as such Rule
may be amended from time to time, or any similar rule or regulation hereafter
adopted by the Commission having substantially the same effect as such
Rule.

    


     “Rule 415” means Rule
415 promulgated by the Commission pursuant to the Securities Act, as such Rule
may be amended or interpreted from time to time, or any similar rule or
regulation hereafter adopted by the Commission having substantially the same
purpose and effect as such Rule.

    


    “Rule 424” means Rule
424 promulgated by the Commission pursuant to the Securities Act, as such Rule
may be amended or interpreted from time to time, or any similar rule or
regulation hereafter adopted by the Commission having substantially the same
purpose and effect as such Rule.

    


    “Selling Stockholder
Questionnaire” shall have the meaning set forth in Section
3(a).

    


    “SEC Guidance” means
(i) any publicly-available written or oral guidance of the Commission staff, or
any comments, requirements or requests of the Commission staff and (ii) the
Securities Act.


    
      
         


      

      
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    “Stockholder Approval
Date” means the date that the Company receives the Stockholder
Approval.

    


    
      	
            	
              2.

            	
              Shelf
      Registration.

            


    

    


    (a)           On
or prior to each Filing Date, the Company shall prepare and file with the
Commission a Registration Statement covering the resale of all or such maximum
portion of the Registrable Securities as permitted by SEC Guidance (provided
that, the Company shall use diligent efforts to advocate with the Commission for
the registration of all of the Registrable Securities in accordance with the SEC
Guidance, including without limitation, the Manual of Publicly Available
Telephone Interpretations D.29) that are not then registered on an effective
Registration Statement for an offering to be made on a continuous basis pursuant
to Rule 415.  Each Registration Statement filed hereunder shall be on
Form S-3 (except if the Company is not then eligible to register for resale the
Registrable Securities on Form S-3, in which case such registration shall be on
another appropriate form in accordance herewith) and shall contain (unless
otherwise directed by at least an 85% majority in interest of the Holders)
substantially the “Plan of Distribution”
attached hereto as Annex
A.  Subject to the terms of this Agreement, the Company shall
use its reasonable best efforts to cause a Registration Statement filed
hereunder to be declared effective under the Securities Act as promptly as
reasonably possible after the filing thereof, but in any event prior to the
applicable Effectiveness Date, and shall use its reasonable best efforts to keep
such Registration Statement continuously effective under the Securities Act
until all Registrable Securities covered by such Registration Statement (i) have
been sold thereunder or pursuant to Rule 144, or (ii) (A) may be sold without
volume or manner-of-sale restrictions pursuant to Rule 144 and (B) (I) may be
sold without the requirement for the Company to be in compliance with the
current public information requirement under Rule 144 or (II) the Company is in
compliance with the current public information requirement under Rule 144, as
determined by the counsel to the Company pursuant to a written opinion letter to
such effect, addressed and acceptable to the Transfer Agent and the affected
Holders (the “Effectiveness
Period”).  The Company shall telephonically request
effectiveness of a Registration Statement as of 5:00 p.m. New York City time on
a Trading Day.   The Company shall immediately notify the Holders
via facsimile or by e-mail of the effectiveness of a Registration Statement on
the same Trading Day that the Company telephonically confirms effectiveness with
the Commission, which shall be the date requested for effectiveness of such
Registration Statement.  The Company shall, by 9:30 a.m. New York City
time on the Trading Day after the effective date of such Registration Statement,
file a final Prospectus with the Commission as required by Rule
424.  Failure to so notify the Holder within one (1) Trading Day of
such notification of effectiveness or failure to file a final Prospectus as
foresaid shall be deemed an Event under Section 2(b).  Notwithstanding any other provision of this Agreement
and subject to the payment of liquidated
damages pursuant to Section 2(b), if any
SEC Guidance sets forth a limitation
on the number of Registrable Securities
permitted to be registered on a particular Registration Statement
(and notwithstanding that the Company used diligent efforts to
advocate with the Commission for the registration of all or a greater portion of Registrable
Securities), unless otherwise directed in writing by a Holder as to its
Registrable Securities, the number of Registrable Securities to be registered on
such Registration Statement will first be reduced by Registrable Securities
represented by Warrant Shares (applied, in the case that some Warrant Shares may
be registered, to the Holders on a pro rata basis based on the total number of
unregistered Warrant Shares held by such Holders), and second by Registrable
Securities represented by Conversion Shares
(applied, in the case that some
Conversion Shares may be registered, to the Holders on a pro rata
basis based on the total number of unregistered Conversion Shares
held by such Holders); provided, however, that, prior to any reduction in the number of
Registrable Securities included in a Registration Statement as set forth in this
sentence, all shares of Common Stock set forth on Schedule 6(b) hereto shall
be reduced first. In the event of a cutback
hereunder, the Company shall give the Holder at least 5 Trading Days prior
written notice along with the calculations as to such Holder’s
allotment.

     

    
      
        
        

      

      
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    (b)           If:
(i) the Initial Registration Statement is not filed on or prior to its Filing
Date (if the Company files the Initial Registration Statement without affording
the Holders the opportunity to review and comment on the same as required by
Section 3(a) herein, the Company shall be deemed to have not satisfied this
clause (i)), or (ii) the Company fails to file with the Commission a request for
acceleration of a Registration Statement in accordance with Rule 461 promulgated
by the Commission pursuant to the Securities Act, within five Trading Days of
the date that the Company is notified (orally or in writing, whichever is
earlier) by the Commission that such Registration Statement will not be
“reviewed” or will not be subject to further review, or (iii) prior to the
effective date of a Registration Statement, the Company fails to file a
pre-effective amendment and otherwise respond in writing to comments made by the
Commission in respect of such Registration Statement within 20 Business Days
after the receipt of comments by or notice from the Commission that such
amendment is required in order for such Registration Statement to be declared
effective, or (iv) as to, in the aggregate among all Holders on a pro-rata basis
based on their purchase of the Securities pursuant to the Purchase Agreement, a
Registration Statement registering for resale all of the Initial Shares is not
declared effective by the Commission by the Effectiveness Date of the Initial
Registration Statement, or (v) after the effective date of a Registration
Statement, such Registration Statement ceases for any reason to remain
continuously effective as to all Registrable Securities included in such
Registration Statement, or the Holders are otherwise not permitted to utilize
the Prospectus therein to resell such Registrable Securities, for more than 15
consecutive calendar days or more than an aggregate of 30 calendar days (which
need not be consecutive calendar days) during any 12-month period, or (vi) the
Company shall fail for any reason to satisfy the current public information
requirement under Rule 144 as to the applicable Registrable Securities (any such
failure or breach being referred to as an “Event”, and for
purposes of clauses (i), (iv) and (vi), the date on which such Event occurs, and
for purpose of clause (ii) the date on which such five Trading Day period is
exceeded, and for purpose of clause (iii) the date which such 20 Business Day
period is exceeded, and for purpose of clause (v) the date on which such 15 or
30 calendar day period, as applicable, is exceeded being referred to as “Event Date”), then,
in addition to any other rights the Holders may have hereunder or under
applicable law, on each such Event Date and on each monthly anniversary of each
such Event Date (if the applicable Event shall not have been cured by such date)
until the applicable Event is cured, the Company shall pay to each Holder an
amount in cash, as partial liquidated damages and not as a penalty, equal to
1.0% of the aggregate purchase price paid by such Holder pursuant to the
Purchase Agreement for any unregistered Registrable Securities then held by such
Holder.  The parties agree that (1) the Company shall not be liable
for liquidated damages under this Agreement with respect to any unexercised
Warrants or Warrant Shares and (2) the maximum aggregate liquidated damages
payable to a Holder under this Agreement shall be 15% of the aggregate
Subscription Amount paid by such Holder pursuant to the Purchase
Agreement.  If the Company fails to pay any partial liquidated damages
pursuant to this Section in full within seven days after the date payable, the
Company will pay interest thereon at a rate of 18% per annum (or such lesser
maximum amount that is permitted to be paid by applicable law) to the Holder,
accruing daily from the date such partial liquidated damages are due until such
amounts, plus all such interest thereon, are paid in full. The partial
liquidated damages pursuant to the terms hereof shall apply on a daily pro rata
basis for any portion of a month prior to the cure of an Event.


    
      
         


      

      
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              3.

            	
              Registration
      Procedures.

            


    

    


    In
connection with the Company’s registration obligations hereunder, the Company
shall:

    


    (a)           Not
less than five (5) Trading Days prior to the filing of each Registration
Statement and not less than one (1) Business Day prior to the filing of any
related Prospectus or any amendment or supplement thereto (including any
document that would be incorporated or deemed to be incorporated therein by
reference), the Company shall (i) furnish to each Holder copies of all such
documents proposed to be filed, which documents (other than those incorporated
or deemed to be incorporated by reference) will be subject to the review of such
Holders, and (ii) cause its officers and directors, counsel and independent
registered public accountants to respond to such inquiries as shall be
necessary, in the reasonable opinion of respective counsel to each Holder, to
conduct a reasonable investigation within the meaning of the Securities Act. The
Company shall not file a Registration Statement or any such Prospectus or any
amendments or supplements thereto to which the Holders of a majority of the
Registrable Securities shall reasonably object in good faith, provided that, the
Company is notified of such objection in writing no later than five (5) Trading
Days after the Holders have been so furnished copies of a Registration Statement
or one (1) Business Day after the Holders have been so furnished copies of any
related Prospectus or amendments or supplements thereto. Each Holder agrees to
furnish to the Company a completed questionnaire in the form attached to this
Agreement as Annex
B (a “Selling
Stockholder Questionnaire”) not later than the earlier of two (2)
Business Days prior to the Filing Date and the end of the third (3rd) Business
Day following the date on which such Holder receives draft materials in
accordance with this Section.


    
      
         


      

      
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    (b)           (i)
Prepare and file with the Commission such amendments, including post-effective
amendments, to a Registration Statement and the Prospectus used in connection
therewith as may be necessary to keep a Registration Statement continuously
effective as to the applicable Registrable Securities for the Effectiveness
Period and prepare and file with the Commission such additional Registration
Statements in order to register for resale under the Securities Act all of the
Registrable Securities, (ii) cause the related Prospectus to be amended or
supplemented by any required Prospectus supplement (subject to the terms of this
Agreement), and, as so supplemented or amended, to be filed pursuant to Rule
424, (iii) respond as promptly as reasonably possible to any comments received
from the Commission with respect to a Registration Statement or any amendment
thereto and provide as promptly as reasonably possible to the Holders true and
complete copies of all correspondence from and to the Commission relating to a
Registration Statement (provided that, the Company may excise any information
contained therein which would constitute material non-public information as to
any Holder which has not executed a confidentiality agreement with respect
thereto with the Company), and (iv) comply in all material respects with the
applicable provisions of the Securities Act and the Exchange Act with respect to
the disposition of all Registrable Securities covered by a Registration
Statement during the applicable period in accordance (subject to the terms of
this Agreement) with the intended methods of disposition by the Holders thereof
set forth in such Registration Statement as so amended or in such Prospectus as
so supplemented.

    


    (c)           If
during the Effectiveness Period, the number of Registrable Securities at any
time exceeds 100% of the number of shares of Common Stock then registered in a
Registration Statement, then the Company shall file as soon as reasonably
practicable, but in any case prior to the applicable Filing Date, an additional
Registration Statement covering the resale by the Holders of not less than the
number of such Registrable Securities, subject to any SEC Guidance
setting forth a limitation on the number of
Registrable Securities permitted
to be registered on such additional Registration Statement.

    


    (d)           Notify
the Holders of Registrable Securities to be sold (which notice shall, pursuant
to clauses (iii) through (vi) hereof, be accompanied by an instruction to
suspend the use of the Prospectus until the requisite changes have been made) as
promptly as reasonably possible (and, in the case of (i)(A) below, not less than
one (1) Trading Day prior to such filing) and (if requested by any such Person)
confirm such notice in writing no later than one (1) Trading Day following the
day (i)(A) when a Prospectus or any Prospectus supplement or post-effective
amendment to a Registration Statement is proposed to be filed, (B) when the
Commission notifies the Company whether there will be a “review” of such
Registration Statement and whenever the Commission comments in writing on such
Registration Statement, and (C) with respect to a Registration Statement or any
post-effective amendment, when the same has become effective, (ii) of any
request by the Commission or any other federal or state governmental authority
for amendments or supplements to a Registration Statement or Prospectus or for
additional information, (iii) of the issuance by the Commission or any other
federal or state governmental authority of any stop order suspending the
effectiveness of a Registration Statement covering any or all of the Registrable
Securities or the initiation of any Proceedings for that purpose; (iv) of the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction, or the initiation or threatening of any
Proceeding for such purpose, (v) of the occurrence of any event or passage of
time that makes the financial statements included in a Registration Statement
ineligible for inclusion therein or any statement made in a Registration
Statement or Prospectus or any document incorporated or deemed to be
incorporated therein by reference untrue in any material respect or that
requires any revisions to a Registration Statement, Prospectus or other
documents so that, in the case of a Registration Statement or the Prospectus, as
the case may be, it will not contain any untrue statement of a material fact or
omit to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading and (vi) of the occurrence or existence of any pending
corporate development with respect to the Company that the Company believes may
be material and that, in the determination of the Company, makes it not in the
best interest of the Company to allow continued availability of a Registration
Statement or Prospectus, provided that, any and all of such information shall
remain confidential to each Holder until such information otherwise becomes
public, unless disclosure by a Holder is required by law; provided, further, that
notwithstanding each Holder’s agreement to keep such information confidential,
each such Holder makes no acknowledgement that any such information is material,
non-public information.


    
      
         


      

      
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    (e)           Use
its reasonable best efforts to avoid the issuance of, or, if issued, obtain the
withdrawal of (i) any order stopping or suspending the effectiveness of a
Registration Statement, or (ii) any suspension of the qualification (or
exemption from qualification) of any of the Registrable Securities for sale in
any jurisdiction, at the earliest practicable moment.

    


    (f)           Furnish
to each Holder, without charge, at least one conformed copy of each such
Registration Statement and each amendment thereto, including financial
statements and schedules, all documents incorporated or deemed to be
incorporated therein by reference to the extent requested by such Person, and
all exhibits to the extent requested by such Person (including those previously
furnished or incorporated by reference) promptly after the filing of such
documents with the Commission; provided, that any such item which is available
on the EDGAR system  (or successor thereto) need not be furnished in
physical form.

    


    (g)           Subject
to the terms of this Agreement, the Company hereby consents to the use of such
Prospectus and each amendment or supplement thereto by each of the selling
Holders in connection with the offering and sale of the Registrable Securities
covered by such Prospectus and any amendment or supplement thereto, except after
the giving of any notice pursuant to Section 3(d).

    


    (h)           
The Company shall cooperate with any broker-dealer through which a Holder
proposes to resell its Registrable Securities in effecting a filing with the
FINRA Corporate Financing Department pursuant to NASD Rule 2710, as requested by
any such Holder, and the Company shall pay the filing fee required by such
filing within two (2) Business Days of request therefor.


    
      
         


      

      
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    (i)           Prior
to any resale of Registrable Securities by a Holder, use its commercially
reasonable efforts to register or qualify or cooperate with the selling Holders
in connection with the registration or qualification (or exemption from the
Registration or qualification) of such Registrable Securities for the resale by
the Holder under the securities or Blue Sky laws of such jurisdictions within
the United States as any Holder reasonably requests in writing, to keep each
registration or qualification (or exemption therefrom) effective during the
Effectiveness Period and to do any and all other acts or things reasonably
necessary to enable the disposition in such jurisdictions of the Registrable
Securities covered by each Registration Statement; provided, that, the Company
shall not be required to qualify generally to do business in any jurisdiction
where it is not then so qualified, subject the Company to any material tax in
any such jurisdiction where it is not then so subject or file a general consent
to service of process in any such jurisdiction.

    


    (j)           If
requested by a Holder, cooperate with such Holder to facilitate the timely
preparation and delivery of certificates representing Registrable Securities to
be delivered to a transferee pursuant to a Registration Statement, which
certificates shall be free, to the extent permitted by the Purchase Agreement,
of all restrictive legends, and to enable such Registrable Securities to be in
such denominations and registered in such names as any such Holder may
request.

    


    (k)           Upon
the occurrence of any event contemplated by Section 3(d), as promptly as
reasonably possible under the circumstances taking into account the Company’s
good faith assessment of any adverse consequences to the Company and its
stockholders of the premature disclosure of such event, prepare a supplement or
amendment, including a post-effective amendment, to a Registration Statement or
a supplement to the related Prospectus or any document incorporated or deemed to
be incorporated therein by reference, and file any other required document so
that, as thereafter delivered, neither a Registration Statement nor such
Prospectus will contain an untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading. If the Company notifies the
Holders in accordance with clauses (iii) through (vi) of Section 3(d) above to
suspend the use of any Prospectus until the requisite changes to such Prospectus
have been made, then the Holders shall suspend use of such
Prospectus.  The Company will use its reasonable best efforts to
ensure that the use of the Prospectus may be resumed as promptly as is
practicable.  The Company shall be entitled to exercise its right
under this Section 3(k) to suspend the availability of a Registration Statement
and Prospectus, subject to the payment of partial liquidated damages otherwise
required pursuant to Section 2(b), for a period not to exceed 60 calendar days
(which need not be consecutive days) in any 12 month period.

    


    (l)           Comply
with all applicable rules and regulations of the Commission.


    
      
         


      

      
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    (m)           The
Company may require each selling Holder to furnish to the Company a certified
statement as to the number of shares of Common Stock beneficially owned by such
Holder and, if required by the Commission, the natural persons thereof that have
voting and dispositive control over the shares. During any periods that the
Company is unable to meet its obligations hereunder or provide any other
information requested by the Commission with respect to the registration of the
Registrable Securities solely because any Holder fails to furnish such
information within three Trading Days of the Company’s request, any liquidated
damages that are accruing at such time as to such Holder only shall be tolled
and any Event that may otherwise occur solely because of such delay shall be
suspended as to such Holder only, until such information is delivered to the
Company.

    


            4.                  Registration
Expenses. All fees and expenses incident to the performance of or
compliance with, this Agreement by the Company shall be borne by the Company
whether or not any Registrable Securities are sold pursuant to a Registration
Statement. The fees and expenses referred to in the foregoing sentence shall
include, without limitation, (i) all registration and filing fees (including,
without limitation, fees and expenses of the Company’s counsel and independent
registered public accountants) (A) with respect to filings made with the
Commission, (B) with respect to filings required to be made with any Trading
Market on which the Common Stock is then listed for trading, (C) in compliance
with applicable state securities or Blue Sky laws reasonably agreed to by the
Company in writing (including, without limitation, fees and disbursements of
counsel for the Company in connection with Blue Sky qualifications or exemptions
of the Registrable Securities) and (D) if not previously paid by the Company in
connection with an Issuer Filing, with respect to any filing that may be
required to be made by any broker through which a Holder intends to make sales
of Registrable Securities with the FINRA pursuant to NASD Rule 2710, so long as
the broker is receiving no more than a customary brokerage commission in
connection with such sale, (ii) printing expenses (including, without
limitation, expenses of printing certificates for Registrable Securities), (iii)
messenger, telephone and delivery expenses, (iv) fees and disbursements of
counsel for the Company, (v) Securities Act liability insurance, if the Company
so desires such insurance, and (vi) fees and expenses of all other Persons
retained by the Company in connection with the consummation of the transactions
contemplated by this Agreement.  In addition, the Company shall be
responsible for all of its internal expenses incurred in connection with the
consummation of the transactions contemplated by this Agreement (including,
without limitation, all salaries and expenses of its officers and employees
performing legal or accounting duties), the expense of any annual audit and the
fees and expenses incurred in connection with the listing of the Registrable
Securities on any securities exchange as required hereunder.  In no
event shall the Company be responsible for any broker or similar commissions of
any Holder or, except to the extent provided for in the Transaction Documents,
any legal fees or other costs of the Holders.


    
      
         


      

      
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            5.                  Indemnification.

    


    (a)           Indemnification by the
Company. The Company shall, notwithstanding any termination of this
Agreement, indemnify and hold harmless each Holder, the officers, directors,
members, partners, agents, brokers (including brokers who offer and sell
Registrable Securities as principal as a result of a pledge or any failure to
perform under a margin call of Common Stock), investment advisors and employees
(and any other Persons with a functionally equivalent role of a Person holding
such titles, notwithstanding a lack of such title or any other title) of each of
them, each Person who controls any such Holder (within the meaning of Section 15
of the Securities Act or Section 20 of the Exchange Act) and the officers,
directors, members, stockholders, partners, agents and employees (and any other
Persons with a functionally equivalent role of a Person holding such titles,
notwithstanding a lack of such title or any other title) of each such
controlling Person, to the fullest extent permitted by applicable law, from and
against any and all losses, claims, damages, liabilities, costs (including,
without limitation, reasonable attorneys’ fees) and expenses (collectively,
“Losses”), as
incurred, arising out of or relating to (1) any untrue or alleged untrue
statement of a material fact contained in a Registration Statement, any
Prospectus or any form of prospectus included in a Registration Statement, or in
any amendment or supplement thereto or in any preliminary prospectus included in
a Registration Statement, or arising out of or relating to any omission or
alleged omission of a material fact required to be stated therein or necessary
to make the statements therein (in the case of any Prospectus, form of
prospectus, preliminary prospectus or amendment or supplement thereto, in light
of the circumstances under which they were made) not misleading or (2) any
violation or alleged violation by the Company of the Securities Act, the
Exchange Act or any state securities law, or any rule or regulation thereunder,
in connection with the performance of its obligations under this Agreement,
except to the extent, but only to the extent, that (i) such untrue statements or
omissions are based solely upon information regarding such Holder furnished in
writing to the Company by such Holder expressly for use therein, or to the
extent that such information relates to such Holder or such Holder’s proposed
method of distribution of Registrable Securities and was reviewed and expressly
approved in writing by such Holder expressly for use in a Registration
Statement, such Prospectus, form of prospectus or preliminary prospectus or in
any amendment or supplement thereto (it being understood that the Holder has
approved Annex A hereto for this purpose) or (ii) in the case of an occurrence
of an event of the type specified in Section 3(d)(iii)-(vi), the use by such
Holder of an outdated, defective or otherwise unavailable Prospectus after the
Company has notified such Holder in writing that the Prospectus is outdated,
defective or otherwise unavailable for use by such Holder and prior to the
receipt by such Holder of the Advice contemplated in Section
6(d).  The Company shall notify the Holders promptly of the
institution, threat or assertion of any Proceeding arising from or in connection
with the transactions contemplated by this Agreement of which the Company is
aware.

    



    
      
         


      

      
        11

        
          

        

      

      
         


      

    


    (b)           Indemnification by
Holders. Each Holder shall, severally and not jointly, indemnify and hold
harmless the Company, its directors, officers, agents and employees, each Person
who controls the Company (within the meaning of Section 15 of the Securities Act
and Section 20 of the Exchange Act), and the directors, officers, agents or
employees of such controlling Persons, to the fullest extent permitted by
applicable law, from and against all Losses, as incurred, to the extent arising
out of or based solely upon: (x) such Holder’s failure to comply with the
prospectus delivery requirements of the Securities Act or (y) any untrue or
alleged untrue statement of a material fact contained in any Registration
Statement, any Prospectus, any form of prospectus included in a Registration
Statement or in any amendment or supplement thereto or in any preliminary
prospectus included in a Registration Statement, or arising out of or relating
to any omission or alleged omission of a material fact required to be stated
therein or necessary to make the statements therein not misleading (i) to the
extent, but only to the extent, that such untrue statement or omission is
contained in any information so furnished in writing by such Holder to the
Company specifically for inclusion in such Registration Statement or such
Prospectus, form of prospectus or preliminary prospectus or (ii) to the extent
that such information relates to such Holder’s proposed method of distribution
of Registrable Securities and was reviewed and expressly approved in writing by
such Holder expressly for use in a Registration Statement (it being understood
that the Holder has approved Annex A hereto for this purpose), such Prospectus,
form of prospectus or preliminary prospectus or in any amendment or supplement
thereto or (ii) in the case of an occurrence of an event of the type specified
in Section 3(d)(iii)-(vi), the use by such Holder of an outdated, defective or
otherwise unavailable Prospectus after the Company has notified such Holder in
writing that the Prospectus is outdated, defective or otherwise unavailable for
use by such Holder and prior to the receipt by such Holder of the Advice
contemplated in Section 6(d). In no event shall the liability of any selling
Holder under this Section 5(b) be greater in amount than the dollar amount of
the net proceeds received by such Holder upon the sale of the Registrable
Securities giving rise to such indemnification obligation.

    


    (c)           Conduct of Indemnification
Proceedings. If any Proceeding shall be brought or asserted against any
Person entitled to indemnity hereunder (an “Indemnified Party”),
such Indemnified Party shall promptly notify the Person from whom indemnity is
sought (the “Indemnifying Party”)
in writing, and the Indemnifying Party shall have the right to assume the
defense thereof, including the employment of counsel reasonably satisfactory to
the Indemnified Party and the payment of all fees and expenses incurred in
connection with defense thereof; provided, that, the failure of any Indemnified
Party to give such notice shall not relieve the Indemnifying Party of its
obligations or liabilities pursuant to this Agreement, except (and only) to the
extent that it shall be finally determined by a court of competent jurisdiction
(which determination is not subject to appeal or further review) that such
failure shall have prejudiced the Indemnifying Party.

    


    An Indemnified Party shall have the
right to employ separate counsel in any such Proceeding and to participate in
the defense thereof, but the fees and expenses of such counsel shall be at the
expense of such Indemnified Party or Parties unless:  (1) the
Indemnifying Party has agreed in writing to pay such fees and expenses, (2) the
Indemnifying Party shall have failed promptly to assume the defense of such
Proceeding and to employ counsel reasonably satisfactory to such Indemnified
Party in any such Proceeding, or (3) the named parties to any such Proceeding
(including any impleaded parties) include both such Indemnified Party and the
Indemnifying Party, and counsel to the Indemnified Party shall reasonably
believe that a material conflict of interest is likely to exist if the same
counsel were to represent such Indemnified Party and the Indemnifying Party (in
which case, if such Indemnified Party notifies the Indemnifying Party in writing
that it elects to employ separate counsel at the expense of the Indemnifying
Party, the Indemnifying Party shall not have the right to assume the defense
thereof and the reasonable fees and expenses of no more than one separate
counsel shall be at the expense of the Indemnifying Party).  The
Indemnifying Party shall not be liable for any settlement of any such Proceeding
effected without its written consent, which consent shall not be unreasonably
withheld or delayed.  No Indemnifying Party shall, without the prior
written consent of the Indemnified Party, effect any settlement of any pending
Proceeding in respect of which any Indemnified Party is a party, unless such
settlement includes an unconditional release of such Indemnified Party from all
liability on claims that are the subject matter of such
Proceeding.


    
      
         


      

      
        12

        
          

        

      

      
         


      

    


    


    Subject to the terms of this Agreement,
all reasonable fees and expenses of the Indemnified Party (including reasonable
fees and expenses to the extent incurred in connection with investigating or
preparing to defend such Proceeding in a manner not inconsistent with this
Section) shall be paid to the Indemnified Party, as incurred, within ten Trading
Days of written notice thereof to the Indemnifying Party; provided, that, the
Indemnified Party shall promptly reimburse the Indemnifying Party for that
portion of such fees and expenses applicable to such actions for which such
Indemnified Party is judicially determined not to be entitled to indemnification
hereunder.

    


    (d)           Contribution. If the
indemnification under Section 5(a) or 5(b) is unavailable to an Indemnified
Party or insufficient to hold an Indemnified Party harmless for any Losses, then
each Indemnifying Party shall contribute to the amount paid or payable by such
Indemnified Party, in such proportion as is appropriate to reflect the relative
fault of the Indemnifying Party and Indemnified Party in connection with the
actions, statements or omissions that resulted in such Losses as well as any
other relevant equitable considerations. The relative fault of such Indemnifying
Party and Indemnified Party shall be determined by reference to, among other
things, whether any action in question, including any untrue or alleged untrue
statement of a material fact or omission or alleged omission of a material fact,
has been taken or made by, or relates to information supplied by, such
Indemnifying Party or Indemnified Party, and the parties’ relative intent,
knowledge, access to information and opportunity to correct or prevent such
action, statement or omission.  The amount paid or payable by a party
as a result of any Losses shall be deemed to include, subject to the limitations
set forth in this Agreement, any reasonable attorneys’ or other fees or expenses
incurred by such party in connection with any Proceeding to the extent such
party would have been indemnified for such fees or expenses if the
indemnification provided for in this Section was available to such party in
accordance with its terms.

    


    The parties hereto agree that it would
not be just and equitable if contribution pursuant to this Section 5(d) were
determined by pro rata allocation or by any other method of allocation that does
not take into account the equitable considerations referred to in the
immediately preceding paragraph.  Notwithstanding the provisions of
this Section 5(d), no Holder shall be required to contribute pursuant to this
Section 5(d), in the aggregate, any amount in excess of the amount by which the
net proceeds actually received by such Holder from the sale of the Registrable
Securities subject to the Proceeding exceeds the amount of any damages that such
Holder has otherwise been required to pay by reason of such untrue or alleged
untrue statement or omission or alleged omission.


    
      
         


      

      
        13

        
          

        

      

      
         


      

    


    


    The
indemnity and contribution agreements contained in this Section are in addition
to any liability that the Indemnifying Parties may have to the Indemnified
Parties.

    


            6.                  Miscellaneous.

    


    (a)           Remedies.  In
the event of a breach by the Company or by a Holder of any of their respective
obligations under this Agreement, each Holder or the Company, as the case may
be, in addition to being entitled to exercise all rights granted by law and
under this Agreement, including recovery of damages, shall be entitled to
specific performance of its rights under this Agreement.  Each of the
Company and each Holder agrees that monetary damages would not provide adequate
compensation for any losses incurred by reason of a breach by it of any of the
provisions of this Agreement and hereby further agrees that, in the event of any
action for specific performance in respect of such breach, it shall not assert
or shall waive the defense that a remedy at law would be adequate.

    


    (b)           No Piggyback on
Registrations; Prohibition on Filing Other Registration Statements.
Except as set forth on Schedule 6(b)
attached hereto and in connection with transactions contemplated by clause (d)
under Exempt Issuance, neither the Company nor any of its security holders
(other than the Holders in such capacity pursuant hereto) may include securities
of the Company in any Registration Statements other than the Registrable
Securities.  The Company shall not file any other registration
statements until the earlier of such time that all Registrable Securities are
(i) registered pursuant to a Registration Statement that is declared effective
by the Commission or (ii) eligible for resale
without volume or manner-of-sale restrictions or current public information
requirements pursuant to Rule 144; provided, however, that this
Section 6(b) shall not prohibit the Company from filing (x) amendments to
registration statements filed prior to the date of this Agreement, (y)
registration statements pursuant to registration rights obligations in effect as
of this Agreement and described on Schedule 6(i) hereto,
and (z) registration statements on Form S-4 or Form S-8 (each as promulgated
under the Securities Act) or their then equivalents relating to equity
securities to be issued solely in connection with any acquisition of any entity
or business or equity securities issuable in connection with the Company’s stock
option or other employee benefit plans.

    


    (c)           Compliance. Each
Holder covenants and agrees that it will comply with the prospectus delivery
requirements of the Securities Act as applicable to it in connection with sales
of Registrable Securities pursuant to a Registration Statement.

    


    (d)           Discontinued
Disposition.  By its acquisition of Registrable Securities,
each Holder agrees that, upon receipt of a notice from the Company of the
occurrence of any event of the kind described in Section 3(d)(iii) through (vi),
such Holder will forthwith discontinue disposition of such Registrable
Securities under a Registration Statement until it is advised in writing (the
“Advice”) by
the Company that the use of the applicable Prospectus (as it may have been
supplemented or amended) may be resumed.  The Company will use its
best efforts to ensure that the use of the Prospectus may be resumed as promptly
as is practicable.  The Company agrees and acknowledges that any
periods during which the Holder is required to discontinue the disposition of
the Registrable Securities hereunder shall be subject to the provisions of
Section 2(b).


    
      
         


      

      
        14

        
          

        

      

      
         


      

    

    


    (e)           Piggy-Back
Registrations. Except as set forth on Schedule 6(e)
attached hereto, if, at any time during the Effectiveness Period, there is not
an effective Registration Statement covering all of the Registrable Securities
and the Company shall determine to prepare and file with the Commission a
registration statement relating to an offering for its own account or the
account of others under the Securities Act of any of its equity securities,
other than on Form S-4 or Form S-8 (each as promulgated under the Securities
Act) or their then equivalents relating to equity securities to be issued solely
in connection with any acquisition of any entity or business or equity
securities issuable in connection with the Company’s stock option or other
employee benefit plans, then the Company shall deliver to each Holder a written
notice of such determination and, if within fifteen days after the date of the
delivery of such notice, any such Holder shall so request in writing, the
Company shall include in such registration statement all or any part of such
Registrable Securities such Holder requests to be registered; provided, however, that the
Company shall not be required to register any Registrable Securities pursuant to
this Section 6(e) that are eligible for resale pursuant to Rule 144 promulgated
by the Commission pursuant to the Securities Act or that are the subject of a
then effective Registration Statement.

    


    (f)           Amendments and
Waivers. The provisions of this Agreement, including the provisions of
this sentence, may not be amended, modified or supplemented, and waivers or
consents to departures from the provisions hereof may not be given, unless the
same shall be in writing and signed by the Company and the Holders of 67% or
more of the then outstanding Registrable Securities (including, for this purpose
any Registrable Securities issuable upon exercise or conversion of any
Security).  If a Registration Statement does not register all of the
Registrable Securities pursuant to a waiver or amendment done in compliance with
the previous sentence, then the number of Registrable Securities to be
registered for each Holder shall be reduced pro rata among all Holders and each
Holder shall have the right to designate which of its Registrable Securities
shall be omitted from such Registration Statement. Notwithstanding the
foregoing, a waiver or consent to depart from the provisions hereof with respect
to a matter that relates exclusively to the rights of a Holder or some Holders
and that does not directly or indirectly affect the rights of other Holders may
be given by such Holder or Holders of all of the Registrable Securities to which
such waiver or consent relates; provided, however, that the
provisions of this sentence may not be amended, modified, or supplemented except
in accordance with the provisions of the first  sentence of this
Section 6(f).

    


    (g)           Notices. Any and all
notices or other communications or deliveries required or permitted to be
provided hereunder shall be delivered as set forth in the Purchase
Agreement.

    


    (h)           Successors and
Assigns. This Agreement shall inure to the benefit of and be binding upon
the successors and permitted assigns of each of the parties and shall inure to
the benefit of each Holder. The Company may not assign (except by merger) its
rights or obligations hereunder without the prior written consent of the Holders
of at least 67% of the then outstanding Registrable Securities. Each Holder may
assign their respective rights hereunder in the manner and to the Persons as
permitted under Section 5.7 of the Purchase Agreement.


    
      
         


      

      
        15

        
          

        

      

      
         


      

    

    


    (i)           No Inconsistent
Agreements. Neither the Company nor any of its Subsidiaries has entered,
as of the date hereof, nor shall the Company or any of its Subsidiaries, on or
after the date of this Agreement, enter into any agreement with respect to its
securities, that would have the effect of impairing the rights granted to the
Holders in this Agreement or otherwise  materially conflicts with the
provisions hereof.  Except as set forth on Schedule 6(i),
neither the Company nor any of its Subsidiaries has previously entered into any
agreement granting any registration rights with respect to any of its securities
to any Person that have not been satisfied in full.

    


    (j)           Execution and
Counterparts. This Agreement may be executed in two or more counterparts,
all of which when taken together shall be considered one and the same agreement
and shall become effective when counterparts have been signed by each party and
delivered to the other party, it being understood that both parties need not
sign the same counterpart.  In the event that any signature is
delivered by facsimile transmission or by e-mail delivery of a “.pdf” format
data file, such signature shall create a valid and binding obligation of the
party executing (or on whose behalf such signature is executed) with the same
force and effect as if such facsimile or “.pdf” signature page were an original
thereof.

    


    (k)           Governing
Law.  All questions concerning the construction, validity,
enforcement and interpretation of this Agreement shall be determined in
accordance with the provisions of the Purchase Agreement.

    


    (l)
           Cumulative Remedies.
The remedies provided herein are cumulative and not exclusive of any other
remedies provided by law.

    


    (m)          Severability. If any
term, provision, covenant or restriction of this Agreement is held by a court of
competent jurisdiction to be invalid, illegal, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions set forth herein
shall remain in full force and effect and shall in no way be affected, impaired
or invalidated, and the parties hereto shall use their commercially reasonable
efforts to find and employ an alternative means to achieve the same or
substantially the same result as that contemplated by such term, provision,
covenant or restriction. It is hereby stipulated and declared to be the
intention of the parties that they would have executed the remaining terms,
provisions, covenants and restrictions without including any of such that may be
hereafter declared invalid, illegal, void or unenforceable.

    


    (n)           Headings. The
headings in this Agreement are for convenience only, do not constitute a part of
the Agreement and shall not be deemed to limit or affect any of the provisions
hereof.


    
      
         


      

      
        16

        
          

        

      

      
         


      

    

    


    (o)           Independent Nature of
Holders’ Obligations and Rights. The obligations of each Holder hereunder
are several and not joint with the obligations of any other Holder hereunder,
and no Holder shall be responsible in any way for the performance of the
obligations of any other Holder hereunder. Nothing contained herein or in any
other agreement or document delivered at any closing, and no action taken by any
Holder pursuant hereto or thereto, shall be deemed to constitute the Holders as
a partnership, an association, a joint venture or any other kind of entity, or
create a presumption that the Holders are in any way acting in concert with
respect to such obligations or the transactions contemplated by this Agreement.
Each Holder shall be entitled to protect and enforce its rights, including
without limitation the rights arising out of this Agreement, and it shall not be
necessary for any other Holder to be joined as an additional party in any
proceeding for such purpose.

    


    ********************

     

    (Signature
Pages Follow)


    
      
         


      

      
        17

        
          

        

      

      
         


      

    

    


    IN WITNESS WHEREOF, the parties have
executed this Registration Rights Agreement as of the date first written
above.

    


    
      
        
          
            
              	
                       

                    	CLEVELAND BIOLABS,
      INC.  
	 
      	 
      	 
      
	 
      	 
      	 
      
	 
      	
                      By:  

                    	
                      /s/
      Michael Fonstein

                    
	 
      	 
      	
                      Name: Michael
      Fonstein

                    
	 
      	 
      	
                      Title:   President
      and Chief Executive
Officer

                    


            

          

        

      

    

    


    [SIGNATURE
PAGE OF HOLDERS FOLLOWS]


    
      
         


      

      
        18

        
          

        

      

      
         


      

    


    [SIGNATURE
PAGE OF HOLDERS TO CBLI RRA]

    


    


    Name of
Holder: __________________________

    


    Signature of Authorized Signatory of
Holder: __________________________

    


    Name of
Authorized Signatory: _________________________

    


    Title of
Authorized Signatory: __________________________

    


    [SIGNATURE
PAGES OF HOLDERS OMITTED]


    
      
         


      

      
        19

        
          

        

      

      
         


      

    


    Annex A

    


    Plan of
Distribution

    


    Each
Selling Stockholder (the “Selling
Stockholders”) of the common stock and any of their pledgees, assignees
and successors-in-interest may, from time to time, sell any or all of their
shares of common stock covered hereby on the [principal Trading Market] or any
other stock exchange, market or trading facility on which the shares are traded
or in private transactions.  These sales may be at fixed or negotiated
prices.  A Selling Stockholder may use any one or more of the
following methods when selling shares:

     

    
      	
               
      

            	
              ·

            	
              ordinary
      brokerage transactions and transactions in which the broker-dealer
      solicits purchasers;

            


    

     

    
      	
               
      

            	
              ·

            	
              block
      trades in which the broker-dealer will attempt to sell the shares as agent
      but may position and resell a portion of the block as principal to
      facilitate the transaction;

            


    

     

    
      	
               
      

            	
              ·

            	
              purchases
      by a broker-dealer as principal and resale by the broker-dealer for its
      account;

            


    

     

    
      	
               
      

            	
              ·

            	
              an
      exchange distribution in accordance with the rules of the applicable
      exchange;

            


    

     

    
      	
               
      

            	
              ·

            	
              privately
      negotiated transactions;

            


    

     

    
      	
               
      

            	
              ·

            	
              settlement
      of short sales entered into after the effective date of the registration
      statement of which this prospectus is a
part;

            


    

     

    
      	
               
      

            	
              ·

            	
              in
      transaction through broker-dealers that agree with the Selling
      Stockholders to sell a specified number of such shares at a stipulated
      price per share;

            


    

     

    
      	
               
      

            	
              ·

            	
              through
      the writing or settlement of options or other hedging transactions,
      whether through an options exchange or
  otherwise;

            


    

     

    
      	
               
      

            	
              ·

            	
              a
      combination of any such methods of sale;
or

            


    

     

    
      	
               
      

            	
              ·

            	
              any
      other method permitted pursuant to applicable
  law.

            


    

     

    The
Selling Stockholders may also sell shares under Rule 144 under the Securities
Act of 1933, as amended (the “Securities Act”), if
available, rather than under this prospectus.

     

    Broker-dealers
engaged by the Selling Stockholders may arrange for other brokers-dealers to
participate in sales.  Broker-dealers may receive commissions or
discounts from the Selling Stockholders (or, if any broker-dealer acts as agent
for the purchaser of shares, from the purchaser) in amounts to be negotiated,
but, except as set forth in a supplement to this Prospectus, in the case of an
agency transaction, not in excess of a customary brokerage commission in
compliance with FINRA NASD Rule 2440; and in the case of a principal
transaction, a markup or markdown in compliance with NASD
IM-2440.


    
      
         


      

      
        20

        
          

        

      

      
         


      

    


    In
connection with the sale of the common stock or interests therein, the Selling
Stockholders may enter into hedging transactions with broker-dealers or other
financial institutions, which may in turn engage in short sales of the common
stock in the course of hedging the positions they assume.  The Selling
Stockholders may also sell shares of the common stock short after the effective
date of the registration statement of which this prospectus is a part and
deliver these securities to close out their short positions, or loan or pledge
the common stock to broker-dealers that in turn may sell these
securities.  The Selling Stockholders may also enter into option or
other transactions with broker-dealers or other financial institutions or create
one or more derivative securities which require the delivery to such
broker-dealer or other financial institution of shares offered by this
prospectus, which shares such broker-dealer or other financial institution may
resell pursuant to this prospectus (as supplemented or amended to reflect such
transaction).

     

    The
Selling Stockholders and any broker-dealers or agents that are involved in
selling the shares may be deemed to be “underwriters” within the meaning of the
Securities Act in connection with such sales.  In such event, any
commissions received by such broker-dealers or agents and any profit on the
resale of the shares purchased by them may be deemed to be underwriting
commissions or discounts under the Securities Act.  Each Selling
Stockholder has informed the Company that it does not have any written or oral
agreement or understanding, directly or indirectly, with any person to
distribute the Common Stock. In no event shall any broker-dealer receive fees,
commissions and markups which, in the aggregate, would exceed eight percent
(8%).

     

    The
Company is required to pay certain fees and expenses incurred by the Company
incident to the registration of the shares.  The Company has agreed to
indemnify the Selling Stockholders against certain losses, claims, damages and
liabilities, including liabilities under the Securities Act.

     

    Because
Selling Stockholders may be deemed to be “underwriters” within the meaning of
the Securities Act, they will be subject to the prospectus delivery requirements
of the Securities Act including Rule 172 thereunder.  The Selling
Stockholders have advised us that there is no underwriter or coordinating broker
acting in connection with the proposed sale of the resale shares by the Selling
Stockholders.

     

    We agreed
to keep this prospectus effective until the earlier of (i) the date on which the
shares may be resold by the Selling Stockholders without registration and
without regard to any volume or manner-of-sale limitations by reason of Rule
144, without the requirement for the Company to be in compliance with the
current public information under Rule 144 under the Securities Act or any other
rule of similar effect or (ii) all of the shares have been sold pursuant to this
or another prospectus or Rule 144 under the Securities Act or any other rule of
similar effect.  The resale shares will be sold only through
registered or licensed brokers or dealers if required under applicable state
securities laws. In addition, in certain states, the resale shares of Common
Stock covered hereby may not be sold unless they have been registered or
qualified for sale in the applicable state or an exemption from the registration
or qualification requirement is available and is complied with.


    
      
         


      

      
        21

        
          

        

      

      
         


      

    


    Under
applicable rules and regulations under the Exchange Act, any person engaged in
the distribution of the resale shares may not simultaneously engage in market
making activities with respect to the common stock for the applicable restricted
period, as defined in Regulation M, prior to the commencement of the
distribution.  In addition, the Selling Stockholders will be subject
to applicable provisions of the Exchange Act and the rules and regulations
thereunder, including Regulation M, which may limit the timing of purchases and
sales of shares of the common stock by the Selling Stockholders or any other
person.  We will make copies of this prospectus available to the
Selling Stockholders and have informed them of the need to deliver a copy of
this prospectus to each purchaser at or prior to the time of the sale (including
by compliance with Rule 172 under the Securities Act).


    
      
         


      

      
        22

        
          

        

      

      
         


      

    


    Annex
B

     

    CLEVELAND
BIOLABS, INC.

     

    Selling
Stockholder Notice and Questionnaire

     

    The
undersigned beneficial owner of common stock (the “Registrable
Securities”) of Cleveland BioLabs, Inc., a Delaware corporation (the
“Company”),
understands that the Company has filed or intends to file with the Securities
and Exchange Commission (the “Commission”) a
registration statement (the “Registration
Statement”) for the registration and resale under Rule 415 of the
Securities Act of 1933, as amended (the “Securities Act”), of
the Registrable Securities, in accordance with the terms of the Registration
Rights Agreement (the “Registration Rights
Agreement”) to which this document is annexed.  A copy of the
Registration Rights Agreement is available from the Company upon request at the
address set forth below.  All capitalized terms not otherwise defined
herein shall have the meanings ascribed thereto in the Registration Rights
Agreement.

     

    Certain
legal consequences arise from being named as a selling stockholder in the
Registration Statement and the related prospectus.  Accordingly,
holders and beneficial owners of Registrable Securities are advised to consult
their own securities law counsel regarding the consequences of being named or
not being named as a selling stockholder in the Registration Statement and the
related prospectus.

     

    NOTICE

     

    The
undersigned beneficial owner (the “Selling Stockholder”)
of Registrable Securities hereby elects to include the Registrable Securities
owned by it in the Registration Statement.


    
      
         


      

      
        23

        
          

        

      

      
         


      

    


    The
undersigned hereby provides the following information to the Company and
represents and warrants that such information is accurate:

     

    QUESTIONNAIRE

     

    
      	
              1.

            	
              Name.

            


    

     

    
      
        	
                 
      

              	
                (a)

              	
                Full
      Legal Name of Selling Stockholder

              
	 	 	 
	 	 	 


      

    

    


    
      
        	
                 
      

              	
                b)

              	
                Full
      Legal Name of Registered Holder (if not the same as (a) above) through
      which Registrable Securities are held:

              
	 	 	 
	 	 	 


      

    

    


    
      
        	
                 
      

              	
                (c)

              	
                Full
      Legal Names of any Control Persons, including any Natural Control Person
      (which means a natural person who directly or indirectly alone or with
      others has power to vote or dispose of the securities covered by this
      Questionnaire):

              
	 	 	 
	 	 	 


      

    

     

    
      2.  Address
for Notices to Selling Stockholder:

    

     

    
      
        	 
      
	 
      
	 
      


      

      
        
          
            
              	
                      Telephone: 

                    	 
      


            

          

        

      

      
        
          
            	
                    Fax: 

                  	 
      


          

        

      

      
        
          
            	
                    Contact Person: 

                  	 
      


          

        

      

    

    


    
      3.  Broker-Dealer
Status:

    

     

    
      	
               
      

            	
              (a)

            	
              Are
      you a broker-dealer?

            


    

     

    Yes    ̈  No    ̈

     

    
      	
               
      

            	
              (b)

            	
              If
      “yes” to Section 3(a), did you receive your Registrable Securities as
      compensation for investment banking services to the
    Company?

            


    

     

    Yes    ̈  No    ̈

     

    
      	
            	
              Note:

            	
              If
      “no” to Section 3(b), the Commission’s staff has indicated that you should
      be identified as an underwriter in the Registration
    Statement.

            


    


    
      
         


      

      
        24

        
          

        

      

      
         


      

    


    
      	
               
      

            	
              (c)

            	
              Are
      you an affiliate of a
broker-dealer?

            


    

     

    Yes    ̈  No    ̈

     

    
      	
               
      

            	
              (d)

            	
              If
      you are an affiliate of a broker-dealer, do you certify that you purchased
      the Registrable Securities in the ordinary course of business, and at the
      time of the purchase of the Registrable Securities to be resold, you had
      no agreements or understandings, directly or indirectly, with any person
      to distribute the Registrable
Securities?

            


    

     

    Yes    ̈  No    ̈

     

    
      	
            	
              Note:

            	
              If
      “no” to Section 3(d), the Commission’s staff has indicated that you should
      be identified as an underwriter in the Registration
    Statement.

            


    

     

    
      4.  Beneficial
Ownership of Securities of the Company Owned by the Selling
Stockholder.

    

     

    Except
as set forth below in this Item 4, the undersigned is not the beneficial or
registered owner of any securities of the Company other than the securities
issuable pursuant to the Purchase Agreement.

     

    
      
        	
                 
      

              	
                (a)

              	
                Type
      and Amount of other securities beneficially owned by the Selling
      Stockholder:

              
	 	 	 
	 	 	 
	 	 	 


      

    


    
      
         


      

      
        25

        
          

        

      

      
         


      

    


    
      5.  Relationships
with the Company:

    

     

    Except
as set forth below, neither the undersigned nor any of its affiliates, officers,
directors or principal equity holders (owners of 5% of more of the equity
securities of the undersigned) has held any position or office or has had any
other material relationship with the Company (or its predecessors or affiliates)
during the past three years.

     

    
      
        	
                 
      

              	
                State
      any exceptions here:

              
	 	 
	 	 
	 	 


      

    

     

    The
undersigned agrees to promptly notify the Company of any inaccuracies or changes
in the information provided herein that may occur subsequent to the date hereof
at any time prior to the effectiveness of the Registration Statement and
thereafter at any times while the Registration Statement remains
effective.

     

    By
signing below, the undersigned consents to the disclosure of the information
contained herein in its answers to Items 1 through 5 and the inclusion of such
information in the Registration Statement and the related prospectus and any amendments or supplements
thereto.  The undersigned understands that such information
will be relied upon by the Company in connection with the preparation or
amendment of the Registration Statement and the related prospectus and any
amendments or supplements thereto.

     

    IN
WITNESS WHEREOF the undersigned, by authority duly given, has caused this Notice
and Questionnaire to be executed and delivered either in person or by its duly
authorized agent.

     

    
      
        
          
            
              	
                      Date: 

                    	 
      	 
      	
                      Beneficial
      Owner:____________________________________

                    
	 
      	 
      	 
      	 
      
	 
      	 
      	
                      By:

                    	 
      
	 
      	 
      	
                       

                    	Name: 
      
	 
      	 
      	
                       

                    	

                      Title: 
      

                    


            

          

        

      

    

    


    PLEASE
FAX A COPY (OR EMAIL A .PDF COPY) OF THE COMPLETED AND EXECUTED NOTICE AND
QUESTIONNAIRE, AND RETURN THE ORIGINAL BY OVERNIGHT MAIL, TO:


    
      
         


      

      
        26