Document:

Exhibit 10.2

 

Exhibit No. 10.2 Form of Convertible Promissory
Note

 

THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE. THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED,
HYPOTHECATED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT TO SUCH SECURITIES UNDER
SUCH ACT AND QUALIFICATION UNDER APPLICABLE STATE SECURITIES LAWS, OR AN OPINION OF COUNSEL SATISFACTORY TO THE MAKER THAT SUCH
REGISTRATION AND QUALIFICATION IS NOT REQUIRED.

 

THE SECURITIES REPRESENTED HEREBY MAY BE TRANSFERRED ONLY
IN ACCORDANCE WITH THE TERMS OF THAT CERTAIN SECURITIES PURCHASE AGREEMENT BETWEEN THE

MAKER AND THE SECURITY HOLDER DATED________________,
2016, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE MAKER.

 

BIOHITECH GLOBAL, INC.

[FORM OF]

CONVERTIBLE PROMISSORY NOTE

 

	$ ____________	___________
    , 2016  

 

FOR VALUE RECEIVED, BioHiTech Global, Inc.
(the “Maker”) hereby promises to pay to the order of __________________ or his, her or its successors or assigns (the
“Holder”) the principal amount of ___________________________ Dollars ($__________) (the “Principal Amount”).
This Convertible Promissory Note shall be referred to herein as the “Note” and referred to collectively with other
notes of the same series as the “Notes”.

 

1.             Purpose.
This Note is made and delivered by the Maker to the Holder as of the date first written above (the “Original Issue Date”)
pursuant to the terms of that certain Securities Purchase Agreement, dated as of ______________, 2016, by and among the Maker and
the Holder (the “Purchase Agreement”). This Note is one of a series of substantially identical Notes issued by the
Maker in connection with the Purchase Agreement. All capitalized terms used and not defined herein shall have the meanings ascribed
to them in the Purchase Agreement.

 

2.            Interest.
Simple interest on the Principal Amount from time-to-time remaining unpaid shall accrue from the date of this Note at the rate
of eight percent (8%) per annum. Interest shall be computed on the basis of a 360 day year and a 30 day month. Interest shall be
paid, at the Maker’s option, in cash, or in shares of Maker’s Common Stock or in a mix of both, as further specified
herein.

 

3.             Maturity
Date. All amounts, including principal and interest, payable hereunder shall be due and payable on the earliest to occur of
(i) twenty four (24) months from the Initial Closing Date (the “Calendar Due Date”), (ii) the listing (the “Listing”)
of the Maker’s Common Stock on The Nasdaq Stock Market or NYSE MKT (each, a “National Exchange”), or (iii) a
Change of Control (as defined below). Such date shall be referred to herein as the “Maturity Date”.

 

4.            Methods
of Repayment.

 

4.1           Mandatory
Conversion at Maturity. On the Maturity Date, all amounts payable hereunder (except for interest, which is subject to payment
in accordance with Section 4.3 of this Note) shall be repaid with shares of the Maker’s Common Stock in accordance with the
terms of Section 5.1 of this Note.

 

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4.2           Optional
Conversion prior to Maturity. Prior to the Maturity Date, all or a portion of the principal payable hereunder, along with a
proportional amount of all other amounts then payable under the Note (except for interest, which is subject to payment in accordance
with Section 4.3 of this Note), may from time to time, at the sole option of the Holder, be repaid with shares of the Maker’s
Common Stock in accordance with the terms of Section 5.2 of this Note. Each date of such an optional conversion shall be referred
to herein as an “Optional Conversion Date”.

 

4.3           Method
of Interest Payment. Interest payable hereunder shall be paid on the earlier of the Maturity Date or the Optional Conversion
Date of the outstanding principal amount of the Note as to which such interest has accrued. Such payment may be made in cash, in
shares of the Maker's Common Stock, or in a mixture of both, at the election of the Maker. If the Maker elects to pay any portion
of the interest in shares, such shares will be converted in accordance with Section 5.3 of this Note.

 

4.4           No
Prepayment Right. All amounts payable hereunder shall be repaid on the Maturity Date or on one or more Optional Conversion
Dates.

 

5.             Conversion
of Note. The following provisions shall govern the conversion into shares of Common Stock of any and all amounts due under
this Note.

 

5.1           Mandatory
Conversion at Maturity. On the Maturity Date, all amounts payable hereunder (except for interest, which shall be paid in accordance
with Section 5.3 of this Note) shall be paid in shares of the Maker’s Common Stock at a conversion price (the “Mandatory
Principal Conversion Price”) equal to the lowest of: (i) $2.75 (the “Closing Price”), (ii) the Listing Price
(as defined below), (iii) the Public Offering Price (as defined below), (iv) the Private Offering Price (as defined below), or
(v) the Change of Control Price (as defined below). The “Listing Price” means the lower of the opening and closing
National Exchange prices (as appropriately adjusted to reflect stock dividends, stock splits, combinations, recapitalizations and
the like with respect to the Maker’s capital stock after the date hereof) on such day that the Maker’s Common Stock
is first traded on a National Exchange. The “Public Offering Price” means the price per share (as appropriately adjusted
to reflect stock dividends, stock splits, combinations, recapitalizations and the like with respect to the Maker’s capital
stock after the date hereof) paid by public investors in an underwritten public offering conducted in connection with the Listing,
without regard to any underwriting discount or other offering expense. The “Private Offering Price” means the lowest
price per share (as appropriately adjusted to reflect stock dividends, stock splits, combinations, recapitalizations and the like
with respect to the Maker’s capital stock after the date hereof) paid by investors in any private equity, equity-linked or
debt financing (other than the Offering) conducted after the date hereof prior to the Listing, without regard to any broker’s
fee or other offering expense. The “Change of Control Price” means the per-share consideration (as appropriately adjusted
to reflect stock dividends, stock splits, combinations, recapitalizations and the like with respect to the Maker’s capital
stock after the date hereof) paid in the Change of Control.

 

5.2           Optional
Conversion prior to Maturity. On each Optional Conversion Date, if any, all principal to be repaid on such date, along with
a proportional amount of all other amounts then payable under the Note (except for interest, which shall be paid in accordance
with Section 5.3 of this Note) shall be paid in shares of the Maker’s Common Stock at a conversion price (the “Optional
Principal Conversion Price”) equal to the Closing Price.

 

5.3           Conversion
of Interest. On the Maturity Date and on each Optional Conversion Date, if any, the portion of the interest then payable hereunder
that the Maker elects to pay in shares, if any, shall be paid in shares of the Maker’s Common Stock at a conversion price
(the “Interest Conversion Price”) equal to the closing public market price (as appropriately adjusted to reflect stock
dividends, stock splits, combinations, recapitalizations and the like with respect to the Maker’s capital stock after the
date hereof) of the Maker’s Common Stock on the Trading Day immediately prior to the date of Maturity or such Optional Conversion
Date, as applicable.

 

5.4           Conversion
Rate. The number of shares of Common Stock issuable upon conversion pursuant to Sections 5.1, 5.2 or 5.3 shall be determined
by dividing (x) the Principal Amount (plus other amounts payable) and the amount accrued interest, as the case may be, to be paid
(the “Conversion Amount”) by (y) the Mandatory Principal Conversion Price, the Optional Principal Conversion Price
or the Interest Conversion Price, as applicable.

 

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5.5           No
Fractional Shares. The Maker shall not issue any fraction of a share of Common Stock upon any conversion. If the issuance would
result in the issuance of a fraction of a share of Common Stock, the Maker shall round up such fraction of a share of Common Stock
to the nearest whole share. The Maker shall pay any and all transfer, stamp and similar taxes that may be payable with respect
to the issuance and delivery of Common Stock upon conversion.

 

5.6           Mechanics
of Conversion. Within 20 days of the Maturity Date and each Optional Conversion Date, if any, the Maker shall transmit to the
Holder the number of shares of Common Stock representing full repayment of the Conversion Amount being made on such date, and cash
to the extent interest due on such date is being paid in cash, together with an explanation of the calculation of the share and
cash amounts being transmitted. Upon receipt of such items, the Holder shall surrender this Note to a common carrier for delivery
to the Maker as soon as practicable on or following such date (and shall execute an indemnification undertaking with respect to
this Note in the case of its loss, theft or destruction). The person or persons entitled to receive the shares of Common Stock
issuable upon a conversion of this Note shall be treated for all purposes as the record holder or holders of such shares of Common
Stock on the Maturity Date or Optional Conversion Date, as applicable.

 

5.7           Reservation
of Common Stock. Until the Notes are paid in full, the Maker shall at all times keep reserved for issuance under this Note
such number of shares of Common Stock as shall be necessary to satisfy the Maker’s obligation to issue shares of Common Stock
hereunder assuming all amounts payable under this Note shall be paid in shares of Common Stock (without regard to any limitation
otherwise contained herein with respect to the number of shares of Common Stock that may be acquirable upon exercise of this Note).
If, notwithstanding the foregoing, and not in limitation thereof, at any time any of the Notes remain outstanding, the Maker does
not have a sufficient number of authorized and unreserved shares of Common Stock (the “Required Reserve Amount”) to
satisfy its obligation set forth in this Section 5.7 (such failure, an “Authorized Share Failure”), then the Maker
shall immediately take all action necessary to increase the Maker’s authorized shares of Common Stock to an amount sufficient
to allow the Maker to maintain the Required Reserve Amount for all the Notes then outstanding. Without limiting the generality
of the foregoing sentence, as soon as practicable after the date of the occurrence of an Authorized Share Failure, but in no event
later than 60 days after the occurrence of such Authorized Share Failure, the Maker shall, to the extent necessary or advisable
in order to cure sure Authorized Share Failure, hold a meeting of its shareholders for the approval of an increase in the number
of authorized shares of Common Stock, in connection with such meeting, provide each shareholder with a proxy statement, and use
its best efforts to solicit its shareholders’ approval of such increase in authorized shares of Common Stock and to cause
its board of directors to recommend to the shareholders that they approve such increase.

 

5.8           Adjustments.
The applicable Conversion Price and number and kind of shares or other securities to be issued upon conversion determined pursuant
to Section 5 hereof, shall be subject to adjustment from time to time upon the happening of certain events while the Maker’s
conversion obligations remain outstanding, as follows:

 

5.8.1           Merger,
Sale of Assets, etc. If the Maker at any time shall consolidate with or merge into or sell or convey all or substantially all
of its assets to any other entity, this Note, as to the unpaid Principal Amount thereof and other payments and interest accrued
thereon, shall thereafter be deemed to evidence the right to purchase such number and kind of shares or other securities and property
as would have been issuable or distributable on account of such consolidation, merger, sale or conveyance, upon or with respect
to the securities subject to the conversion or purchase right immediately prior to such consolidation, merger, sale or conveyance.
The foregoing provision shall similarly apply to successive transactions of a similar nature by any such successor or purchaser.
Without limiting the generality of the foregoing, the anti-dilution provisions of this Section 5.8 shall apply to such securities
of such successor or purchaser after any such consolidation, merger, sale or conveyance.

 

5.8.2           Reclassification,
etc. If the Maker at any time shall, by reclassification or otherwise, change the Common Stock into the same or a different
number of securities of any class or classes that may be issued or outstanding, this Note, as to the unpaid Principal Amount thereof
and other payments and interest accrued thereon, shall thereafter be deemed to evidence the right to purchase an adjusted number
of such securities and kind of securities as would have been issuable as the result of such change with respect to the Common Stock
immediately prior to such reclassification or other change.

 

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5.8.3           Notice
of Adjustment. Whenever the applicable Conversion Price is adjusted pursuant to this Section 5.8, the Maker shall promptly
mail to the Holder a notice setting forth the applicable Conversion Price after such adjustment and setting forth a statement of
the facts requiring such adjustment.

 

6.            Registration;
Book-Entry. The Maker shall maintain a register (the “Register”) for the recordation of the names and addresses
of the holders of each Note and the Principal Amount of the Notes held by such holders (the “Registered Notes”). The
entries in the Register shall be conclusive and binding for all purposes absent manifest error, and to that extent the Maker and
the holders of the Notes shall treat each person whose name is recorded in the Register as the owner of a Note for all purposes,
including, without limitation, the right to receive payments of the Principal Amount and interest, if any, hereunder, notwithstanding
notice to the contrary. A Registered Note may be assigned or sold in whole or in part only in accordance with the terms of Section
12.3 of this Note and by registration of such assignment or sale on the Register.

 

7.            Defaults;
Remedies.

 

7.1            Events
of Default. The occurrence of any one or more of the following events shall constitute an event of default hereunder (each,
an “Event of Default”):

 

7.1.1           The
Maker fails to make any payment when due under this Note;

 

7.1.2           The
Maker fails to observe and perform any of its covenants or agreements on its part to be observed or performed under the Purchase
Agreement or any other Transaction Document, and such failure shall continue for more than 30 days after notice of such failure
has been delivered to the Maker;

 

7.1.3           Any
representation or warranty made by the Maker in the Purchase Agreement or any other Transaction Document is untrue as of the date
of such representation or warranty except, in the case of a breach of a representation or warranty which is curable, only if such
breach continues for a period of at least 20 consecutive Business Days;

 

7.1.4           The
Maker admits in writing its inability to pay its debts generally as they become due, files a petition in bankruptcy or a petition
to take advantage of any insolvency act, makes an assignment for the benefit of its creditors, or consents to the appointment of
a receiver of itself or of the whole or any substantial part of its property, or has a petition filed against it be adjudicated
a bankrupt, or files a petition or answer seeking reorganization or arrangement under the federal bankruptcy laws or any other
applicable law or statute of the United States of America or any State thereof;

 

7.1.5           A
court of competent jurisdiction enters an order, judgment, or decree appointing, without the consent of the Maker, a receiver of
the Maker or of the whole or any substantial part of its property, or approving a petition filed against the Maker seeking reorganization
or arrangement of the Maker under the federal bankruptcy laws or any other applicable law or statute of the United States of America
or any State thereof, and such order, judgment, or decree shall not be vacated or set aside or stayed within 60 days from the date
of entry thereof;

 

7.1.6           Any
court of competent jurisdiction assumes custody or control of the Maker or of the whole or any substantial part of its property
under the provisions of any other law for the relief or aid of debtors, and such custody or control is not be terminated or stayed
within 60 days from the date of assumption of such custody or control;

 

7.1.7.          This
Note ceases to be, or is asserted by the Maker not to be, a legal, valid and binding obligation of the Maker enforceable in accordance
with its terms;

 

7.1.8           A
judgment or judgments for the payment of money aggregating in excess of $250,000 are rendered against the Maker which judgments
are not, within 60 days after the entry thereof, bonded, discharged or stayed pending appeal, or are not discharged within 60 days
after the expiration of such stay; provided, however, that any judgment which is covered by insurance or an indemnity from a creditworthy
party shall not be included in calculating the $250,000 amount set forth above so long as the Maker certifies that it has not received
a written statement from such insurer or indemnity provider denying such coverage (which written statement shall be reasonably
satisfactory to the Holder) and if the Maker will receive the proceeds of such insurance or indemnity within 30 days of the issuance
of such judgment;

 

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7.1.9           A
default by the Maker occurs under one or more obligations in an aggregate

 

monetary amount in excess of $250,000 for more than 30 days
after the applicable due dates, unless the Maker is contesting the validity of each such obligation in good faith and has segregated
cash funds equal to not less than one-half of the disputed amount;

 

7.1.10         The
Maker fails to deliver the shares of Common Stock to the Holder

 

pursuant to and in the form required by this Note or, if required,
a replacement Note, more than five Business Days after the required delivery date of such Common Stock or replacement Note;

 

7.1.11         The
Maker fails to have reserved for issuance upon conversion of this Note

 

the amount of Common Stock set forth in this Note; or

 

7.1.12         Any
such Event of Default occurs with respect to any of the other Notes.

 

7.2           Notice
by the Maker. The Maker shall notify the Holder in writing as soon as reasonably practicable but in no event more 5 Business
Days after the occurrence of any Event of Default of which the Maker acquires knowledge.

 

7.3           Remedies.
Upon the occurrence of any Event of Default, all sums due and payable to the Holder under this Note shall, at the option of the
Holder, become due and payable immediately without presentment, demand, notice of nonpayment, protest, notice of protest, or other
notice of dishonor, all of which are hereby expressly waived by the Maker. Any payment under this Note (i) not paid within 10 days
following the Calendar Due Date or (ii) due immediately following acceleration by the Holder shall bear interest at the rate of
15% from such Calendar Due Date or acceleration, as applicable, until paid, subject to Section 7.5. To the extent permitted by
law, the Maker waives any right to and stay of execution and the benefit of all exemption laws now or hereafter in effect. In addition
to the foregoing, upon the occurrence of any Event of Default, the Holder may forthwith exercise singly, concurrently, successively,
or otherwise any and all rights and remedies available to the Holder at law, in equity, or otherwise.

 

7.4           Remedies
Cumulative, etc. No right or remedy conferred upon or reserved to the Holder under this Note, or now or hereafter existing
at law or in equity or otherwise, is intended to be exclusive of any other right or remedy, and each and every such right or remedy
shall be cumulative and concurrent, and shall be in addition to every other such right or remedy, and may be pursued singly, concurrently,
successively, or otherwise, at the sole discretion of the Holder, and shall not be exhausted by any one exercise thereof but may
be exercised as often as occasion therefor may occur. No act of the Holder shall be deemed or construed as an election to proceed
under any one such right or remedy to the exclusion of any other such right or remedy; furthermore, each such right or remedy of
the Holder shall be separate, distinct, and cumulative and none shall be given effect to the exclusion of any other.

 

7.5           Usury
Compliance. All agreements between the Maker and the Holder are expressly limited, so that in no event or contingency whatsoever,
whether by reason of the consideration given with respect to this Note, the acceleration of maturity of the unpaid Principal Amount
and interest thereon, or otherwise, shall the amount paid or agreed to be paid to the Holder for the use, forbearance, or detention
of the indebtedness which is the subject of this Note exceed the highest lawful rate permissible under the applicable usury laws.
If, under any circumstances whatsoever, fulfillment of any provision of this Note shall involve transcending the highest interest
rate permitted by law which a court of competent jurisdiction deems applicable, then the obligations to be fulfilled shall be reduced
to such maximum rate, and if, under any circumstances whatsoever, the Holder shall ever receive as interest an amount that exceeds
the highest lawful rate, the amount that would be excessive interest shall be applied to the reduction of the unpaid Principal
Amount under this Note and other amounts (excluding interest) owed in respect of this Note, and not to the payment of interest,
or, if such excessive interest exceeds the unpaid balance of the Principal Amount under this Note and such other amounts (excluding
interest), such excess shall be refunded to the Maker. This provision shall control every other provision of all agreements between
the Maker and the Holder.

 

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8.            Replacement
of Note. Upon receipt by the Maker of evidence satisfactory to it of the loss, theft, destruction, or mutilation of this Note
and (in case of loss, theft, or destruction) of indemnity satisfactory to it, and upon surrender and cancellation of this Note,
if mutilated, the Maker will make and deliver a new Note of like tenor in lieu of this Note.

 

9.            Maker’s
Covenants and Agreements.

 

9.1           Restricted
Payments. The Maker shall not, and the Maker shall not permit any of its subsidiaries (if any) to, directly or indirectly,
redeem, defease, repurchase, repay or make any payments in respect of, by the payment of cash or cash equivalents (in whole or
in part, whether by way of open market purchases, tender offers, private transactions or otherwise), all or any portion of any
capital stock or all or any portion of any indebtedness, whether by way of payment in respect of principal of, interest on or premium
or any other amount due in connection with, such indebtedness if at the time such payment is due or is otherwise made or, after
giving effect to such payment, an event constituting, or that with the passage of time and without being cured would constitute,
an Event of Default has occurred and is continuing.

 

9.2           Valid
Issuance of Securities. The Maker covenants that the securities issuable upon the conversion of this Note will, upon conversion
of this Note, be validly issued, fully paid and nonassessable and free from all taxes, liens and charges in respect of the issue
thereof.

 

9.3           Timely
Notice. The Maker shall give the Holder at least 10 days’ advance written notice prior to the closing of a Change of
Control, provided that the Holder agrees to be bound by any applicable confidentiality agreement or agreements the Maker shall
deem necessary or appropriate.

 

10.           Seniority.
While the Notes remain outstanding, the Maker shall not issue any debt or securities pari passu or senior to the Notes, except
for customary trade financing, mortgages, leases, or other commercial financing activities or any stock option or incentive compensation
plans, without the written consent of holders of an aggregate majority of the principal amount of the Notes then outstanding.

 

11.           Certain
Definitions.

 

11.1         “Business
Day” means any day that is not a Saturday, Sunday, federal holiday or bank holiday in any jurisdiction in which the Maker
holds a substantial portion of its assets.

 

11.2         “Change
of Control” means any liquidation, dissolution, or winding up of the Maker, either voluntary or involuntary, and shall
be deemed to be occasioned by, or to include, (i) the acquisition of the Maker by another entity by means of any transaction or
series of related transactions (including, without limitation, any stock acquisition, reorganization, merger or consolidation)
unless the Maker’s shareholders of record as constituted immediately prior to such acquisition or sale will, immediately
after such acquisition or sale (by virtue of securities issued as consideration for the Maker’s acquisition or sale or otherwise)
hold at least a majority of the voting power of the surviving or acquiring entity or its direct or indirect parent entity (except
that any bona fide equity or debt financing transaction for capital raising purposes shall not be deemed a Change of Control for
this purpose) and (ii) a sale, exclusive license or other disposition of all or substantially all of the assets of the Maker, including
a sale, exclusive license or other disposition of all or substantially all of the assets of one or more of the Maker’s subsidiaries,
if such assets constitute substantially all of the assets of the Maker and such subsidiaries taken as a whole.

 

11.3         “Conversion
Price” means either the Principal Conversion Price or Interest Conversion Price, as applicable.

 

11.4         “Trading
Day” means a day on which any of the following markets or exchanges on which the Common Stock is listed or quoted is
open for trading: the New York Stock Exchange, the NYSE MKT, the Nasdaq Capital Market, the Nasdaq Global Market, the Nasdaq Global
Select Market, the OTCQB marketplace or the OTCQX marketplace (or any successors to any of the foregoing).

 

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11.5         “Transaction
Document” means this Note, the Purchase Agreement and the Warrant issued by the Maker to the Holder pursuant to the Purchase
Agreement.

 

12.          Amendments,
Waivers, and Consents.

 

12.1         Amendment
and Waiver by the Holders. The Notes, including this Note, may be amended, modified, or supplemented, and waivers or consents
to departures from the provisions thereof may be given, if the Maker and the holders of an aggregate majority of the Principal
Amount of the Notes then outstanding consent to the amendment; provided, however, that no term of this Note may be amended or waived
in such a way as to adversely affect the Holder disproportionately to the holder or holders of any other Notes without the written
consent of the Holder and neither the principal balance nor interest rate of this Note may be amended or modified without the consent
of the Holder. Such consent may not be effected orally, but only by a signed statement in writing. Any such amendment or waiver
shall apply to and be binding upon the Holder of this Note, upon each future holder of this Note, and upon the Maker, whether or
not this Note shall have been marked to indicate such amendment or waiver. No such amendment or waiver shall extend to or affect
any obligation not expressly amended or waived or impair any right consequent thereon.

 

12.2         Severability.
In the event that for any reason one or more of the provisions of this Note or their application to any person or circumstance
shall be held to be invalid, illegal, or unenforceable in any respect or to any extent, such provision shall nevertheless remain
valid, legal, and enforceable in all other respects and to such extent as may be permissible. In addition, any such invalidity,
illegality, or unenforceability shall not affect any other provisions of this Note, but this Note shall be construed as if such
invalid, illegal, or unenforceable provision had never been contained herein.

 

12.3         Assignment;
Binding Effect. The Maker may not assign its obligations under this Note without the prior written consent of the Holder. Any
attempted assignment in violation of this Section 12.3 shall be null and void. Subject to the foregoing, this Note inures to the
benefit of the Holder and its successors and assigns, and binds the Maker and its successors and permitted assigns, and the words
“Holder” and “Maker” whenever occurring herein shall be deemed and construed to include such respective
successors and assigns.

 

12.4         Notices
Generally. All notices required to be given to any of the parties hereunder shall be given as set forth in the Purchase Agreement.

 

12.5         Governing
Law; Jurisdiction; Jury Trial. This Note shall be construed and enforced in accordance with, and all questions concerning the
construction, validity, interpretation and performance of this Note shall be governed by, the internal laws of the State of New
York, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of New York or any
other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. The Maker
hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in The City of New York, Borough
of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby
or discussed herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that
it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient
forum or that the venue of such suit, action or proceeding is improper. The Maker hereby irrevocably waives personal service of
process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at
the address it set forth on the signature page hereto and agrees that such service shall constitute good and sufficient service
of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner
permitted by law. In the event that any provision of this Note is invalid or unenforceable under any applicable statute or rule
of law, then such provision shall be deemed inoperative to the extent that it may conflict therewith and shall be deemed modified
to conform to such statute or rule of law. Any such provision which may prove invalid or unenforceable under any law shall not
affect the validity or enforceability of any other provision of this Note. Nothing contained herein shall be deemed or operate
to preclude the Holder from bringing suit or taking other legal action against the Maker in any other jurisdiction to collect on
the Maker’s obligations to the Holder, to realize on any collateral or any other security for such obligations, or to enforce
a judgment or other court ruling in favor of the Holder. THE MAKER HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES
NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS NOTE OR
ANY TRANSACTION CONTEMPLATED HEREBY. This Note shall be deemed an unconditional obligation of Maker for the payment of money
and, without limitation to any other remedies of Holder, may be enforced against Maker by summary proceeding pursuant to New York
Civil Procedure Law and Rules Section 3213 or any similar rule or statute in the jurisdiction where enforcement is sought. For
purposes of such rule or statute, any other document or agreement to which Holder and Maker are parties or which Maker delivered
to Holder, which may be convenient or necessary to determine Holder’s rights hereunder or Maker’s obligations to Holder
are deemed a part of this Note, whether or not such other document or agreement was delivered together herewith or was executed
apart from this Note.

 

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12.6         Section
Headings, Construction. The headings of paragraphs in this Note are provided for convenience only and will not affect its construction
or interpretation. All words used in this Note will be construed to be of such gender or number as the circumstances require. Unless
otherwise expressly provided, the words “hereof” and “hereunder” and similar references refer to this Note
in its entirety and not to any specific section or subsection hereof.

 

12.7         Payment
of Collection, Enforcement and Other Costs. If (a) this Note is placed in the hands of an attorney for collection or enforcement
or is collected or enforced through any legal proceeding or the Holder otherwise takes action to collect amounts due under this
Note or to enforce the provisions of this Note, or (b) there occurs any bankruptcy, reorganization, or receivership of the Maker
or other proceedings affecting the Maker’s creditors’ rights and involving a claim under this Note, then the Maker
shall pay the costs incurred by the Holder for such collection, enforcement or action or in connection with such bankruptcy, reorganization,
receivership or other proceeding, including, but not limited to, attorneys’ fees and disbursements.

 

12.8         Delays
or Omissions. No delay or omission to exercise any right, power, or remedy accruing to the Holder, upon any breach or default
of the Maker under this Note shall impair any such right, power, or remedy of the Holder nor shall it be construed to be a waiver
of any such breach or default, or an acquiescence therein, or of or in any similar breach or default thereafter occurring; nor
shall any waiver of any single breach or default be deemed a waiver of any other breach or default therefore or thereafter occurring.
Any waiver, permit, consent, or approval of any kind or character on the part of the Holder of any breach or default under this
Note or any waiver on the part of the Holder of any provisions or conditions of this Note must be made in writing and shall be
effective only to the extent specifically set forth in such writing. All remedies, either under this Note or by law or otherwise
afforded to the Holders, shall be cumulative and not alternative.

 

[SIGNATURE PAGE FOLLOWS]

 

    	 	8	 

     

    

 

IN WITNESS WHEREOF, BioHiTech Global,
Inc. has caused this Convertible Promissory Note to be executed and delivered on the date set forth above on the cover page of
this Note.

 

BIOHITECH GLOBAL, INC.

 

	By: 	 	 
	 	Name:	 
	 	Title:	 

 

    	 	9Exhibit 10.3 

 

Exhibit No. 10.3 Form of Warrant

 

THIS WARRANT AND THE SECURITIES ISSUABLE UPON
EXERCISE HEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES
LAWS OF ANY STATE. THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF A REGISTRATION
STATEMENT IN EFFECT WITH RESPECT TO SUCH SECURITIES UNDER SUCH ACT AND QUALIFICATION UNDER APPLICABLE STATE SECURITIES LAWS, OR
AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION AND QUALIFICATION IS NOT REQUIRED.

 

THE SECURITIES REPRESENTED HEREBY MAY BE TRANSFERRED
ONLY IN ACCORDANCE WITH THE TERMS OF THAT CERTAIN SECURITIES PURCHASE AGREEMENT BETWEEN THE COMPANY AND THE SECURITY HOLDER DATED
___________, 2016, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY.

 

BIOHITECH GLOBAL, INC. 

 

STOCK PURCHASE WARRANT

 

Issue Date: _______, 2016

 

THIS CERTIFIES that ________________ (the
“Holder”) is entitled, upon the terms and subject to the conditions hereinafter set forth in this Warrant
(this “Warrant”), at any time from time to time (except as otherwise limited below) on or prior to the
Expiration Date, but not thereafter, to subscribe for and to purchase from BioHiTech Global, Inc., a Delaware corporation (the
“Company”), shares of the Company’s common stock, $0.0001 par value (the “Common Stock”),
up to the number of such shares set forth below.

 

This Warrant is issued pursuant
to a Securities Purchase Agreement of even date herewith (the “Purchase Agreement”), and is one of the
Warrants (collectively, the “Warrants”) being issued in connection with the issuance of senior convertible
notes (the “Notes”) being issued by the Company (the “Offering”).

 

The following is a statement
of the rights of the Holder of this Warrant and the conditions to which this Warrant is subject, to which the Holder, by the acceptance
of this Warrant, agrees:

 

1.            Certain
Definitions.

 

1.1           “Exercise
Price” means the per-Share exercise price equal to 120% of the Conversion Price (as defined in the Purchase Agreement);
provided, however, that if the Conversion Price is ever adjusted pursuant to the terms of the Note, the exercise price of the Warrant
shall be adjusted for any unexercised Warrants such that the exercise price will equal 120% of the Adjusted Conversion Price (as
defined in the Purchase Agreement).

 

1.2           “Expiration
Date” means the date that is five (5) years after the issue date set forth

above.

 

1.3           “Initial
Closing Date” means the date on which the Company conducts its initial closing

of the Offering.

 

1.4           “Shares”
or “Warrant Shares” means the shares of Common Stock issuable under this

Warrant, as set forth in Section 2 below.

 

    	 	1	 

     

    

 

2.            Number
of Shares and Exercise Price

 

2.1           This
Warrant shall be exercisable for such number of Shares as described in Section 1(d) of the Purchase Agreement, at the Exercise
Price.

 

2.2           This
Warrant may be exercised in whole or in part at any time beginning on the date on which the Note issued in connection with the
Offering has been converted into Common Stock and continuing thereafter and from time to time on or prior to the Expiration Date.

 

3.            Exercise
of Warrant

 

3.1           The
purchase rights represented by this Warrant are exercisable by the Holder, in whole or in part, by the surrender of this Warrant
and the Notice of Exercise annexed hereto duly executed at the Company’s principal executive office (or such other officer
or agent of the Company as it may designate by notice in writing to the Holder at the address of the Holder appearing on the books
of the Company), and upon payment of the aggregate Exercise Price of the Shares thereby purchased (by cash or by check or bank
draft payable to the order of the Company); whereupon the Holder shall be entitled to receive the number of Shares so purchased.
The Company agrees that if at the time of the surrender of this Warrant and purchase of the Shares, the Holder shall be entitled
to exercise this Warrant, the Shares so purchased shall be issued to the Holder as the record owner of such Shares as of the close
of business on the date on which this Warrant shall have been exercised as aforesaid or on such later date requested by the Holder
or on such earlier date agreed to by the Holder and the Company.

 

3.2           Delivery
of Common Stock Certificates and New Warrant. As soon as reasonably practicable after each exercise of this Warrant, in whole
or in part, and in any event within five (5) business days thereafter (the “Warrant Share Delivery Date”),
the Company, at its expense (including the payment by it of any applicable issue taxes), will cause the name of the Holder (or
as Holder may direct) to be entered in the register of holders in respect of the Warrant Shares and further cause to be issued
in the name of and delivered to the Holder hereof or as the Holder (upon payment by the Holder of any applicable transfer taxes)
may direct:

 

(a)          the
number of duly authorized, validly issued, fully paid and nonassessable Warrant Shares to which the Holder shall be entitled upon
exercise, in certificated form with appropriate restrictive legends, if applicable; and

 

(b)          in
case exercise is in part only, a new Warrant document of like tenor, dated the date hereof, for the remaining number of Warrant
Shares issuable upon exercise of this Warrant after giving effect to the partial exercise of this Warrant (including the delivery
of any Warrant Shares as payment of the Exercise Price for such partial exercise of this Warrant).

 

4.            Nonassessable

 

The Company covenants that all
Shares which may be issued upon the exercise of this Warrant will be validly issued, fully paid and nonassessable and free from
all taxes, liens and charges in respect of the issue thereof.

 

5.            Fractional
Shares

 

No fractional shares or scrip
representing fractional shares shall be issued upon the exercise of this Warrant. With respect to any fraction of a share called
for upon the exercise of this Warrant, the number of shares delivered shall be rounded down to the nearest whole share, and the
Company shall pay to the Holder cash in an amount equal to the fraction represented by the fractional share multiplied by the closing
price of the Company’s Common Stock on the OTCQB Marketplace (or if the Common Stock does not then trade on such market,
on such other U.S. public trading market on which the Common Stock then trades) on the date of exercise.

 

6.            Charges,
Taxes and Expenses

 

Issuance of Shares upon the exercise
of this Warrant, in certificated form or otherwise, shall be made without charge to the Holder hereof for any issue or transfer
tax or other incidental expense in respect of the issuance, including relating to any certificate, all of which taxes and expenses
shall be paid by the Company, and such Shares shall be issued in the name of the Holder.

 

    	 	2	 

     

    

 

7.           No
Rights as Shareholders

 

This Warrant does not entitle the Holder
to any voting rights or other rights as a shareholder of the Company prior to the exercise hereof.

 

8.           Saturdays,
Sundays, Holidays, etc.

 

If the last or appointed day for the taking
of any action or the expiration of any right required or granted herein shall be a Saturday, a Sunday or a legal holiday, then
such action may be taken or such right may be exercised on the next succeeding day that is not a Saturday, Sunday or legal holiday.

 

9.           Adjustments

 

The Exercise Price and the number of Shares
purchasable hereunder are subject to adjustment from time to time as set forth in this Section 9.

 

9.1           Reclassification,
etc. If the Company, at any time while this Warrant, or any portion hereof, remains outstanding and unexpired, by reclassification
of securities or otherwise, shall change the class of the securities as to which purchase rights under this Warrant exist into
the same or a different number of securities or any other class or classes of securities, this Warrant shall thereafter represent
the right to acquire such number and kind of securities as would have been issuable as the result of such change with respect
to the securities that were subject to the purchase rights under this Warrant immediately prior to such reclassification or other
change and the Exercise Price therefor shall be appropriately adjusted, all subject to further adjustment as provided in this
Section 9.

 

9.2           Subdivision
or Combination of Shares. In the event the Company shall at any time subdivide the outstanding securities as to which purchase
rights under this Warrant exist, or shall issue a stock dividend on the securities as to which purchase rights under this Warrant
exist, the number of securities as to which purchase rights under this Warrant exist immediately prior to such subdivision or
to the issuance of such stock dividend shall be proportionately increased, and the Exercise Price shall be proportionately decreased,
and in the event that the Company shall at any time combine the outstanding securities as to which purchase rights under this
Warrant exist, the number of securities as to which purchase rights under this Warrant exist immediately prior to such combination
shall be proportionately decreased, and the Exercise Price shall be proportionately increased, effective at the close of business
on the date of such subdivision, stock dividend or combination, as the case may be.

 

9.3           Cash
Distributions. No adjustment on account of cash dividends or interest on the securities as to which purchase rights under
this Warrant exist will be made to the Exercise Price under this Warrant.

 

10.         Compensation
for Buy-In on Failure to Timely Deliver Warrant Shares upon Exercise. In addition to any other rights available to the
Holder, if the Company fails to deliver, or fails to cause its transfer agent to transmit, to the Holder the Warrant Shares pursuant
to an exercise on or before the Warrant Share Delivery Date, and if after such date the Holder is required by its broker to purchase
(in an open market transaction or otherwise) or the Holder’s brokerage firm otherwise purchases, shares of Common Stock
to deliver in satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise
(a “Buy-In”), then the Company shall (A) pay in cash to the Holder the amount, if any, by which (x)
the Holder’s total purchase price (including brokerage commissions, if any) for the shares of Common Stock so purchased
exceeds (y) the amount obtained by multiplying (1) the number of Warrant Shares that the Company was required to deliver to the
Holder in connection with the exercise at issue, times (2) the price at which the sell order giving rise to such purchase obligation
was executed, and (B) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant
Shares for which such exercise was not honored (in which case such exercise shall be deemed rescinded) or deliver to the Holder
the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery
obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In
with respect to an attempted exercise of shares of Common Stock with an aggregate sale price giving rise to such purchase obligation
of $10,000, under clause (A) of the immediately preceding sentence, the Company shall be required to pay the Holder $1,000, and
the Company would also be required to comply with clause (B). The Holder shall provide the Company written notice indicating the
amounts payable to the Holder in respect of the Buy-In and, upon request of the Company, evidence of the amount of such loss.
Nothing herein shall limit a Holder’s right to pursue any other remedies available to it hereunder, at law or in equity,
including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company’s failure
to timely deliver shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof.

 

    	 	3	 

     

    

 

11.           Intentionally
Left Blank.

 

12.           Miscellaneous.

 

12.1         Loss,
Theft, Destruction or Mutilation of Warrant. Upon receipt of evidence reasonably satisfactory to the Company of the loss,
theft, destruction or mutilation of this Warrant and, in the case of loss, theft or destruction, delivery of an indemnity agreement
reasonably satisfactory in form and substance to the Company or, in the case of mutilation, on surrender and cancellation of this
Warrant, the Company shall execute and deliver, in lieu of this Warrant, a new Warrant executed in the same manner as this Warrant
and of like tenor and amount.

 

12.2         Waivers
and Amendments. This Warrant and the obligations of the Company and the rights of the Holder under this Warrant may be amended,
waived, discharged or terminated (either generally or in a particular instance, either retroactively or prospectively and either
for a specified period of time or indefinitely) with the written consent of the Company (which shall not be required in connection
with a waiver of rights in favor of the Company) and the holders of at least a majority of the then-outstanding aggregate principal
amount under the Notes; provided, however, that no such amendment or waiver shall reduce the number of Shares represented
by this Warrant without the consent of the Holder hereof; and provided further, however, that nothing shall prevent the
Holder from individually agreeing to waive the observation of any term of this Warrant. Any amendment, waiver, discharge or termination
effected in accordance with this Section 12.2 shall be binding upon the Company, the Holder, and except pursuant to a waiver by
an individual holder of another Warrant pursuant to the final proviso in the immediately preceding sentence, each other holder
of Warrants.

 

12.3         Notices.
Any notice, request or other communication required or permitted hereunder shall be given in accordance with the Purchase
Agreement.

 

12.4         Severability.
If one or more provisions of this Warrant are held to be unenforceable under applicable law, such provision(s) shall be excluded
from this Warrant and the balance of this Warrant shall be interpreted as if such provision(s) were so excluded and shall be enforceable
in accordance with its terms.

 

12.5         Successors
and Assigns. Neither this Warrant nor any rights hereunder are transferable without the prior written consent of the
Company. Notwithstanding the foregoing, the Holder shall be permitted to transfer this Warrant to any affiliate (as that term
is defined in the Securities Act of 1933, as amended) of the Holder. If a transfer is permitted pursuant to this Section, the
transfer shall be recorded on the books of the Company upon the surrender of this Warrant, properly endorsed, to the Company at
its principal offices, and the payment to the Company of all transfer taxes and other governmental charges imposed on such transfer.
In the event of a partial transfer, the Company shall issue to the holders one or more appropriate new warrants. Subject to the
foregoing, the provisions of this Warrant shall inure to the benefit of, and be binding upon, the successors, assigns, heirs,
executors and administrators of the Company and the Holder.

 

12.6         Delays
or Omissions. No delay or omission to exercise any right, power, or remedy accruing to the Holder, upon any breach or default
of the Company under this Warrant shall impair any such right, power, or remedy of the Holder nor shall it be construed to be
a waiver of any such breach or default, or an acquiescence therein, or of or in any similar breach or default thereafter occurring;
nor shall any waiver of any single breach or default be deemed a waiver of any other breach or default therefore or thereafter
occurring. Any waiver, permit, consent, or approval of any kind or character on the part of the Holder of any breach or default
under this Warrant or any waiver on the part of the Holder of any provisions or conditions of this Warrant must be made in writing
and shall be effective only to the extent specifically set forth in such writing. All remedies, either under this Warrant or by
law or otherwise afforded to the Holder, shall be cumulative and not alternative.

 

    	 	4	 

     

    

 

12.7         Titles
and Subtitles. The titles of the paragraphs and subparagraphs of this Warrant are for convenience of reference only and are
not to be considered in construing this Warrant.

 

12.8         Construction.
The language used in this Warrant will be deemed to be the language chosen by the parties to express their mutual intent and
no rules of strict construction will be applied against any party.

 

12.9         Governing
Law. THIS WARRANT SHALL BE GOVERNED IN ALL RESPECTS BY THE LAWS OF THE STATE OF NEW YORK AS SUCH LAWS ARE APPLIED TO AGREEMENTS
BETWEEN NEW YORK RESIDENTS ENTERED INTO AND TO BE PERFORMED ENTIRELY WITHIN NEW YORK.

 

[Remainder of page intentionally
left blank]

 

    	 	5	 

     

    

 

IN WITNESS
WHEREOF, BioHiTech Global, Inc. has caused this Warrant to be executed by its officer thereunto duly authorized.

 

BIOHITECH GLOBAL, INC.

 

	By:	 	 
	 	Name:	 
	 	Title:	 

 

    	 	6	 

     

    

 

NOTICE OF EXERCISE

 

		TO:	BioHiTech Global, Inc.

80 Red Schoolhouse Road, Suite 101

Chestnut Ridge, NY 10977

Attn: Secretary

 

The undersigned hereby elects to purchase __________
shares (the “Shares”) of the Common Stock of BioHiTech Global, Inc. pursuant to the terms of the attached
Warrant and tenders herewith payment of the purchase price in full.

 

Please issue the Shares, including in certificated
form with appropriate restrictive legends, if applicable, in the name of the undersigned or in such other name as is specified
below:

 

________________________

(Print Name)

 

Address: _____________________________

 

_____________________________________

 

_____________________________________

 

The undersigned confirms that the undersigned is an
“accredited investor” within the meaning of Rule 501 of Regulation D under the Securities Act of 1933, as amended,
and that the Shares are being acquired for the account of the undersigned for investment only and not with a view to, or for resale
in connection with, the distribution thereof, and that the undersigned has no present intention of distributing or selling the
Shares.

 

	______________________	___________________________
	(Date)	(Signature)

 

______________________

(Print Name)

 

    	 	7

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