Document:

Exhibit 10.2 Form of Convertible Promissory
Note

 

NEITHER THE ISSUANCE AND SALE OF THE
SECURITIES REPRESENTED BY THIS NOTE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE CONVERTIBLE HAVE BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED
OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT OF 1933,
AS AMENDED, OR (B) AN OPINION OF COUNSEL, IN A GENERALLY ACCEPTABLE FORM, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR (II)
UNLESS SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION
WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR FINANCING ARRANGEMENT SECURED BY THE SECURITIES.

 

	Principal Amount:	$	 	Issue Date:	May [__] 2017
	Purchase Price:	$	 	 	 
	Original Issue Discount:	$	 	 	 

 

ORIGINAL ISSUE DISCOUNT CONVERTIBLE
PROMISSORY NOTE

 

FOR VALUE RECEIVED,
BIOHITECH GLOBAL, INC. a Delaware corporation (hereinafter called the “Borrower”), hereby promises to
pay to the order [_________________________], or its registered assigns (the “Holder”) the sum of $___,___.00
together with any interest as set forth herein, on May 2018 (the “Maturity Date”), and to pay interest on the unpaid
principal balance hereof at the rate of three and one-half percent (3.5%) (the “Interest Rate”) per annum from the
date hereof (the “Issue Date”) until the same becomes due and payable, whether at maturity or upon acceleration or
by prepayment or otherwise. Any amount of principal or interest on this Note which is not paid when due shall bear interest at
the rate of twelve percent (12%) per annum from the due date thereof until the same is paid (“Default Interest”). The
rate of Default Interest shall increase by an additional two percent (2%) at the end of each 30-day period that elapses from the
date any amount of principal or interest is not paid when due until such principal or interest is paid up to the maximum allowable
rate under usury laws in effect at the time. Interest shall commence accruing on the date that the Note is fully paid and shall
be computed on the basis of a 365-day year and the actual number of days elapsed. All payments due hereunder (to the extent not
converted into shares of the Borrower’s common stock, par value $0.0001per share (the “Common Stock”) in accordance
with the terms hereof) shall be made in lawful money of the United States of America. All payments shall be made at such address
as the Holder shall hereafter give to the Borrower by written notice made in accordance with the provisions of this Note. Whenever
any amount expressed to be due by the terms of this Note is due on any day which is not a business day, the same shall instead
be due on the next succeeding day which is a business day and, in the case of any interest payment date which is not the date on
which this Note is paid in full, the extension of the due date thereof shall not be taken into account for purposes of determining
the amount of interest due on such date. As used in this Note, the term “business day” shall mean any day other than
a Saturday, Sunday or a day on which commercial banks in the city of New York, New York are authorized or required by law or executive
order to remain closed. Each capitalized term used herein, and not otherwise defined, shall have the meaning ascribed thereto in
that certain Securities Purchase Agreement dated the date hereof, pursuant to which this Note was originally issued (the “Purchase
Agreement”).

 

     

     

    

 

This Note carries an
original issue discount of [$10,000] (the “OID”), thus, the purchase price of this Note shall be [$90,000],
computed as follows [$100,000.00] initial principal balance less the OID.

 

This Note is free from
all taxes, liens, claims and encumbrances with respect to the issue thereof and shall not be subject to preemptive rights or other
similar rights of shareholders of the Borrower and will not impose personal liability upon the holder thereof.

 

The following terms
shall apply to this Note:

 

Article
I. CONVERSION RIGHTS

 

1.1         Conversion
Right. The Holder shall have the right from time to time, following the date of this Note in respect of the remaining outstanding
principal amount of this Note to convert all or any part of the outstanding and unpaid principal amount of this Note into fully
paid and non-assessable shares of Common Stock (a “Conversion”), as such Common Stock exists on the Issue Date, or
any shares of capital stock or other securities of the Borrower into which such Common Stock shall hereafter be changed or reclassified
at a conversion price per share of Three Dollars ($3.00) per share of Common Stock (subject to equitable adjustments for stock
splits, stock dividends or rights offerings by the Borrower relating to the Borrower’s securities or the securities of any
subsidiary of the Borrower, combinations, recapitalization, reclassifications, extraordinary distributions and similar events)
(the “Conversion Price”). The number of shares of Common Stock to be issued upon each conversion of this Note shall
be determined by dividing the Conversion Amount (as defined below) by the applicable Conversion Price then in effect on the date
specified in the notice of conversion, in the form attached hereto as Exhibit A (the “Notice of Conversion”), delivered
to the Borrower by the Holder in accordance with Section 1.2 below; provided that the Notice of Conversion is submitted by facsimile
or e-mail (or by other means resulting in, or reasonably expected to result in, notice) to the Borrower before 6:00 p.m., New York,
New York time on such conversion date (the “Conversion Date”). The term “Conversion Amount” means, with
respect to any conversion of this Note, the sum of (1) the principal amount of this Note to be converted in such conversion plus
(2) at the Holder’s option, accrued and unpaid interest, if any, on such principal amount at the interest rates provided
in this Note to the Conversion Date, plus (3) at the Holder’s option, Default Interest, if any, on the amounts referred
to in the immediately preceding clauses (1) and/or (2).

 

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1.2         Method of Conversion.

 

(a)         Mechanics
of Conversion. Subject to Section 1.1, this Note may be converted by the Holder in whole or in part at any time from time to
time after the Issue Date, by (A) submitting to the Borrower a Notice of Conversion (by facsimile, e-mail or other reasonable
means of communication dispatched on the Conversion Date prior to 6:00 p.m., New York, New York time) at the principal office of
the Borrower.

 

(b)         Surrender
of Note Upon Conversion. Notwithstanding anything to the contrary set forth herein, upon conversion of this Note in accordance
with the terms hereof, the Holder shall not be required to physically surrender this Note to the Borrower unless the entire unpaid
principal amount of this Note is so converted. The Holder and the Borrower shall maintain records showing the principal amount
so converted and the dates of such conversions or shall use such other method, reasonably satisfactory to the Holder and the Borrower,
so as not to require physical surrender of this Note upon each such conversion. In the event of any dispute or discrepancy, such
records of the Borrower shall, prima facie, be controlling
and determinative in the absence of manifest error. Notwithstanding the foregoing, if any portion of this Note is converted as
aforesaid, the Holder may not transfer this Note unless the Holder first physically surrenders this Note to the Borrower, whereupon
the Borrower will forthwith issue and deliver upon the order of the Holder a new Note of like tenor, registered as the Holder (upon
payment by the Holder of any applicable transfer taxes) may request, representing in the aggregate the remaining unpaid principal
amount of this Note. The Holder and any assignee, by acceptance of this Note, acknowledge and agree that, by reason of the provisions
of this paragraph, following conversion of a portion of this Note, the unpaid and unconverted principal amount of this Note represented
by this Note may be less than the amount stated on the face hereof.

 

(c)         Payment of
Taxes. The Borrower shall not be required to pay any tax which may be payable in respect of any transfer involved in the issue
and delivery of shares of Common Stock or other securities or property on conversion of this Note in a name other than that of
the Holder (or in street name), and the Borrower shall not be required to issue or deliver any such shares or other securities
or property unless and until the person or persons (other than the Holder or the custodian in whose street name such shares are
to be held for the Holder’s account) requesting the issuance thereof shall have paid to the Borrower the amount of any such
tax or shall have established to the satisfaction of the Borrower that such tax has been paid.

 

(d)         Delivery
of Common Stock Upon Conversion. Upon receipt by the Borrower from the Holder of a facsimile transmission or e-mail (or other
reasonable means of communication) of a Notice of Conversion meeting the requirements for conversion as provided in this Section
1.2, the Borrower shall issue and deliver or cause to be issued and delivered to or upon the order of the Holder certificates for
the Common Stock issuable upon such conversion within three (3) business days after such receipt (the “Deadline”).

 

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(e)         Obligation
of Borrower to Deliver Common Stock. Upon receipt by the Borrower of a Notice of Conversion, the Holder shall be deemed to
be the holder of record of the Common Stock issuable upon such conversion, the outstanding principal amount and the amount of accrued
and unpaid interest on this Note shall be reduced to reflect such conversion, and, unless the Borrower defaults on its obligations
under this Article I, all rights with respect to the portion of this Note being so converted shall forthwith terminate except the
right to receive the Common Stock or other securities, cash or other assets, as herein provided, on such conversion. If the Holder
shall have given a Notice of Conversion as provided herein, the Borrower’s obligation to issue and deliver the certificates
for Common Stock shall be absolute and unconditional, irrespective of the absence of any action by the Holder to enforce the same,
any waiver or consent with respect to any provision thereof, the recovery of any judgment against any person or any action to enforce
the same, any failure or delay in the enforcement of any other obligation of the Borrower to the holder of record, or any setoff,
counterclaim, recoupment, limitation or termination, or any breach or alleged breach by the Holder of any obligation to the Borrower,
and irrespective of any other circumstance which might otherwise limit such obligation of the Borrower to the Holder in connection
with such conversion. The Conversion Date specified in the Notice of Conversion shall be the Conversion Date so long as the Notice
of Conversion is received by the Borrower before 6:00 p.m., New York, New York time, on such date.

 

(f)         Delivery
of Common Stock by Electronic Transfer. In lieu of delivering physical certificates representing the Common Stock issuable
upon conversion, provided the Borrower is participating in the Depository Trust Company (“DTC”) Fast Automated Securities
Transfer (“FAST”) program, upon request of the Holder and its compliance with the provisions contained in Section 1.1
and in this Section 1.2, the Borrower may cause its transfer agent to electronically transmit the Common Stock issuable upon conversion
to the Holder by crediting the account of Holder’s Prime Broker with DTC through its Deposit Withdrawal Agent Commission
(“DWAC”) system.

 

1.3          Concerning
the Shares. The shares of Common Stock issuable upon conversion of this Note may not be sold or transferred unless (i) such
shares are sold pursuant to an effective registration statement under the Act or (ii) the Borrower or its transfer agent shall
have been furnished with an opinion of counsel (which opinion shall be in form, substance and scope customary for opinions of counsel
in comparable transactions) to the effect that the shares to be sold or transferred may be sold or transferred pursuant to an exemption
from such registration or (iii) such shares are sold or transferred pursuant to Rule 144 under the Act (or a successor rule)
(“Rule 144”) or (iv) such shares are transferred to an “affiliate” (as defined in Rule 144) of the Borrower
who agrees to sell or otherwise transfer the shares only in accordance with this Section 1.3 and who is an Accredited Investor
(as defined in the Purchase Agreement). Except as otherwise provided in the Purchase Agreement (and subject to the removal provisions
set forth below), until such time as the shares of Common Stock issuable upon conversion of this Note have been registered under
the Act or otherwise may be sold pursuant to Rule 144 without any restriction as to the number of securities as of a particular
date that can then be immediately sold, each certificate for shares of Common Stock issuable upon conversion of this Note that
has not been so included in an effective registration statement or that has not been sold pursuant to an effective registration
statement or an exemption that permits removal of the legend, shall bear a legend substantially in the following form, as appropriate:

 

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“NEITHER THE ISSUANCE
AND SALE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE HAVE
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED
FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER
THE SECURITIES ACT OF 1933, AS AMENDED, OR (B) AN OPINION OF COUNSEL (WHICH COUNSEL SHALL BE SELECTED BY THE HOLDER), IN A GENERALLY
ACCEPTABLE FORM, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR (II) UNLESS SOLD PURSUANT TO RULE 144 OR RULE 144A UNDER SAID
ACT. NOTWITHSTANDING THE FOREGOING, THE SECURITIES MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN OR
FINANCING ARRANGEMENT SECURED BY THE SECURITIES.”

 

The legend set forth
above shall be removed and the Borrower shall issue to the Holder a new certificate therefore free of any transfer legend if (i)
the Borrower or its transfer agent shall have received an opinion of counsel, in form, substance and scope customary for opinions
of counsel in comparable transactions, to the effect that a public sale or transfer of such Common Stock may be made without registration
under the Act, which opinion shall be accepted by the Company so that the sale or transfer is effected or (ii) in the case of the
Common Stock issuable upon conversion of this Note, such security is registered for sale by the Holder under an effective registration
statement filed under the Act or otherwise may be sold pursuant to Rule 144 without any restriction as to the number of securities
as of a particular date that can then be immediately sold.

 

1.4         Effect of Certain
Events.

 

(a)         Adjustment
Due to Dilutive Issuance. If, at any time when any portion of the Note remains unpaid or unconverted, the Borrower issues or
sells, or in accordance with this Section 1.4(a) hereof is deemed to have issued or sold, any shares of Common Stock for no consideration
or for a consideration per share (before deduction of reasonable expenses or commissions or underwriting discounts or allowances
in connection therewith) or for consideration per share which is less than the Conversion Price in effect on the date of such issuance
(or deemed issuance) of such shares of Common Stock (a “Dilutive Issuance”), then immediately upon the Dilutive Issuance,
the Conversion Price will be reduced to the amount of the consideration per share received by the Borrower in such Dilutive Issuance.

 

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The Borrower shall
be deemed to have issued or sold shares of Common Stock if the Borrower in any manner issues or grants any warrants, rights or
options (not including employee stock option plans), whether or not immediately exercisable, to subscribe for or to purchase Common
Stock or other securities convertible into or exchangeable for Common Stock (“Convertible Securities”) (such warrants,
rights and options to purchase Common Stock or Convertible Securities are hereinafter referred to as “Options”) and
the price per share for which Common Stock is issuable upon the exercise of such Options is less than the Conversion Price then
in effect, then the Conversion Price shall be equal to such price per share. For purposes of the preceding sentence, the “price
per share for which Common Stock is issuable upon the exercise of such Options” is determined by dividing (i) the total amount,
if any, received or receivable by the Borrower as consideration for the issuance or granting of all such Options, plus the minimum
aggregate amount of additional consideration, if any, payable to the Borrower upon the exercise of all such Options, plus, in the
case of Convertible Securities issuable upon the exercise of such Options, the minimum aggregate amount of additional consideration
payable upon the conversion or exchange thereof at the time such Convertible Securities first become convertible or exchangeable,
by (ii) the maximum total number of shares of Common Stock issuable upon the exercise of all such Options (assuming full conversion
of Convertible Securities, if applicable). No further adjustment to the Conversion Price will be made upon the actual issuance
of such Common Stock upon the exercise of such Options or upon the conversion or exchange of Convertible Securities issuable upon
exercise of such Options.

 

Additionally, the Borrower
shall be deemed to have issued or sold shares of Common Stock if the Borrower in any manner issues or sells any Convertible Securities,
whether or not immediately convertible (other than where the same are issuable upon the exercise of Options), and the price per
share for which Common Stock is issuable upon such conversion or exchange is less than the Conversion Price then in effect, then
the Conversion Price shall be equal to such price per share. For the purposes of the preceding sentence, the “price per share
for which Common Stock is issuable upon such conversion or exchange” is determined by dividing (i) the total amount, if any,
received or receivable by the Borrower as consideration for the issuance or sale of all such Convertible Securities, plus the minimum
aggregate amount of additional consideration, if any, payable to the Borrower upon the conversion or exchange thereof at the time
such Convertible Securities first become convertible or exchangeable, by (ii) the maximum total number of shares of Common Stock
issuable upon the conversion or exchange of all such Convertible Securities. No further adjustment to the Conversion Price will
be made upon the actual issuance of such Common Stock upon conversion or exchange of such Convertible Securities.

 

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(b)         Notice of
Adjustments. Upon the occurrence of each adjustment or readjustment of the Conversion Price as a result of the events described
in this Section 1.4, the Borrower, at its expense, shall promptly compute such adjustment or readjustment and prepare and furnish
to the Holder a certificate setting forth such adjustment or readjustment and showing in detail the facts upon which such adjustment
or readjustment is based. The Borrower shall, upon the written request at any time of the Holder, furnish to such Holder a like
certificate setting forth (i) such adjustment or readjustment, (ii) the Conversion Price at the time in effect and (iii) the number
of shares of Common Stock and the amount, if any, of other securities or property which at the time would be received upon conversion
of the Note.

 

1.5         Status as Shareholder.
Upon submission of a Notice of Conversion by a Holder, (i) the shares covered thereby shall be deemed converted into shares of
Common Stock and (ii) the Holder’s rights as a Holder of such converted portion of this Note shall cease and terminate, excepting
only the right to receive certificates for such shares of Common Stock and to any remedies provided herein or otherwise available
at law or in equity to such Holder because of a failure by the Borrower to comply with the terms of this Note. Notwithstanding
the foregoing, if a Holder has not received certificates for all shares of Common Stock prior to the tenth (10th) business day
after the delivery of a Conversion Notice, then (unless the Holder otherwise elects to retain its status as a holder of Common
Stock by so notifying the Borrower) the Holder shall regain the rights of a Holder of this Note with respect to such unconverted
portions of this Note and the Borrower shall, as soon as practicable, return such unconverted Note to the Holder or, if the Note
has not been surrendered, adjust its records to reflect that such portion of this Note has not been converted. In all cases, the
Holder shall retain all of its rights and remedies (including, without limitation, the right to receive Default Interest.

 

Article
II.  CERTAIN COVENANTS

 

2.1         Distributions
on Capital Stock. So long as the Borrower shall have any obligation under this Note, the Borrower shall not without the written
consent of a majority in interest of all Notes issued pursuant to the Purchase Agreement (a) pay, declare or set apart for such
payment, any dividend or other distribution (whether in cash, property or other securities) on shares of capital stock other than
dividends on shares of Common Stock solely in the form of additional shares of Common Stock or (b) directly or indirectly or through
any subsidiary make any other payment or distribution in respect of its capital stock except for distributions pursuant to any
shareholders’ rights plan which is approved by a majority of the Borrower’s disinterested directors.

 

2.2         Restriction
on Stock Repurchases. So long as the Borrower shall have any obligation under this Note, the Borrower shall not without the
written consent of a majority in interest of all Notes issued pursuant to the Purchase Agreement redeem, repurchase or otherwise
acquire (whether for cash or in exchange for property or other securities or otherwise) in any one transaction or series of related
transactions any shares of capital stock of the Borrower or any warrants, rights or options to purchase or acquire any such shares.

 

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2.3         Borrowings.
So long as the Borrower shall have any obligation under this Note, the Borrower shall not, without the written consent of a majority
in interest of all Notes issued pursuant to the Purchase Agreement, create, incur, assume guarantee, endorse, contingently agree
to purchase or otherwise become liable upon the obligation of any person, firm, partnership, joint venture or corporation, except
by the endorsement of negotiable instruments for deposit or collection, or suffer to exist any liability for borrowed money, except
(a) borrowings in existence or committed on the date hereof and of which the Borrower has informed Holder in writing prior to the
date hereof, (b) indebtedness to trade creditors or financial institutions incurred in the ordinary course of business or (c) borrowings,
the proceeds of which shall be used to repay this Note.

 

2.4         Sale of Assets
/ Change in Control. So long as the Borrower shall have any obligation under this Note, the Borrower shall not, without the
written consent of a majority in interest of all Notes issued pursuant to the Purchase Agreement, sell, lease or otherwise dispose
of any significant portion of its assets outside the ordinary course of business, including commercial asset based financing, or
engage in any change in control transaction.

 

2.5         Advances and
Loans. So long as the Borrower shall have any obligation under this Note, the Borrower shall not, without the written consent
of a majority in interest of all Notes issued pursuant to the Purchase Agreement, lend money, give credit or make advances to any
person, firm, joint venture or corporation, including, without limitation, officers, directors, employees, subsidiaries and affiliates
of the Borrower, except loans, credits or advances (a) in existence or committed on the date hereof and which the Borrower has
informed Holder in writing prior to the date hereof, (b) made in the ordinary course of business or (c) not in excess of $100,000.

 

2.6         Restrictions
on Liens. So long as the Borrower shall have any obligation under this Note, the Borrower shall not, without the written consent
of a majority in interest of all Notes issued pursuant to the Purchase Agreement, create, assume or suffer to exist any lien upon
or against any of its assets, except liens incurred in the ordinary course of business.

 

2.7.         Transactions
with Affiliates. So long as the Borrower shall have any obligation under this Note, the Borrower shall not, without the written
consent of a majority in interest of all Notes issued pursuant to the Purchase Agreement, directly or indirectly, purchase, acquire
or lease any property from, or sell, transfer or lease any property to, make any payment to, or enter into any transaction or arrangement
with, or otherwise deal with, any Affiliate, except transactions disclosed to Holder, which are in the ordinary course of business,
on an arm’s-length basis on terms no less favorable than terms and conditions that would have been obtained from a Person
other than an Affiliate. For purposes of this Section 2.7, the term “Affiliate” shall mean with respect to any person,
any other person which controls, is controlled by or is under common control with such first person and “control” means,
with respect to any entity, the possession, direct or indirect, of the power to direct or cause the direction of the management
and policies of such entity, whether through the ownership of voting securities, by contract or otherwise, as defined is Subpart
229.404 of SEC Regulation S-K.

 

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Article
III.  EVENTS OF DEFAULT

 

If any of the following
events of default (each, an “Event of Default”) shall occur:

 

3.1         Failure to
Pay Principal or Interest. The Borrower fails to pay the principal hereof or interest thereon when due on this Note, whether
at maturity, upon acceleration or otherwise and such payment default shall have continued uncured for a period of three (3) business
days after the date such payment was due.

 

3.2         Conversion
and the Shares. The Borrower fails to issue shares of Common Stock to the Holder (or announces or threatens in writing that
it will not honor its obligation to do so) upon exercise by the Holder of the conversion rights of the Holder in accordance with
the terms of this Note, fails to transfer or cause its transfer agent to transfer (issue) (electronically or in certificated form)
any certificate for shares of Common Stock issued to the Holder upon conversion of or otherwise pursuant to this Note as and when
required by this Note, the Borrower directs its transfer agent not to transfer or delays, impairs, and/or hinders its transfer
agent in transferring (or issuing) (electronically or in certificated form) any certificate for shares of Common Stock to be issued
to the Holder upon conversion of or otherwise pursuant to this Note as and when required by this Note, or fails to remove (or directs
its transfer agent not to remove or impairs, delays, and/or hinders its transfer agent from removing) any restrictive legend (or
to withdraw any stop transfer instructions in respect thereof) on any certificate for any shares of Common Stock issued to the
Holder upon conversion of or otherwise pursuant to this Note as and when required by this Note (or makes any written announcement,
statement or threat that it does not intend to honor the obligations described in this paragraph) and any such failure shall continue
uncured (or any written announcement, statement or threat not to honor its obligations shall not be rescinded in writing) for three
(3) business days after the Holder shall have delivered a Notice of Conversion. It is an obligation of the Borrower to remain current
in its obligations to its transfer agent. It shall be an event of default of this Note, if a conversion of this Note is delayed,
hindered or frustrated due to a balance owed by the Borrower to its transfer agent. If at the option of the Holder, the Holder
advances any funds to the Borrower’s transfer agent in order to process a conversion, such advanced funds shall be paid by
the Borrower to the Holder within forty eight (48) hours of a demand from the Holder.

 

3.3         Breach of Covenants.
The Borrower breaches any material covenant or other material term or condition contained in this Note and any collateral documents
including but not limited to the Purchase Agreement and such breach continues for a period of ten (10) days after written notice
thereof to the Borrower from the Holder.

 

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3.4         Breach of Representations
and Warranties. Any representation or warranty of the Borrower made herein or in any agreement, statement or certificate given
in writing pursuant hereto or in connection herewith (including, without limitation, the Purchase Agreement), shall be false or
misleading in any material respect when made and the breach of which has (or with the passage of time will have) a material adverse
effect on the rights of the Holder with respect to this Note or the Purchase Agreement.

 

3.5         Receiver or
Trustee. The Borrower or any subsidiary of the Borrower shall make an assignment for the benefit of creditors, or apply for
or consent to the appointment of a receiver or trustee for it or for a substantial part of its property or business, or such a
receiver or trustee shall otherwise be appointed.

 

3.6         Judgments.
Any money judgment, writ or similar process shall be entered or filed against the Borrower or any subsidiary of the Borrower or
any of its property or other assets for more than $100,000, and shall remain unvacated, unbonded or unstayed for a period of twenty
(20) days unless otherwise consented to by the Holder, which consent will not be unreasonably withheld.

 

3.7         Bankruptcy.
Bankruptcy, insolvency, reorganization or liquidation proceedings or other proceedings, voluntary or involuntary, for relief under
any bankruptcy law or any law for the relief of debtors shall be instituted by or against the Borrower or any subsidiary of the
Borrower.

 

3.8         Delisting of
Common Stock. The Borrower shall fail to maintain the listing of the Common Stock on at least one of the OTC (which specifically
includes the Pink Sheets electronic quotation system) or an equivalent replacement exchange, or a national securities exchange
that is registered with the Securities and Exchange Commission under Section 6 of the Exchange Act.

 

3.9         Failure to
Comply with the Exchange Act. The Borrower shall fail to comply with the reporting requirements of the Exchange Act; and/or
the Borrower shall cease to be subject to the reporting requirements of the Exchange Act.

 

3.10       Liquidation.         Any
dissolution, liquidation, or winding up of Borrower or any substantial portion of its business.

 

3.11       Cessation
of Operations.         Any cessation of operations by Borrower or Borrower admits it is otherwise generally unable to pay its debts
as such debts become due, provided, however, that any disclosure of the Borrower’s ability to continue as a “going
concern” shall not be an admission that the Borrower cannot pay its debts as they become due.

 

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3.12       Maintenance
of Assets.         The failure by Borrower to maintain any material intellectual property rights, personal, real property or other
assets which are necessary to conduct its business (whether now or in the future).

 

Upon the occurrence
of an Event of Default and at any time thereafter, if any Event of Default shall then be continuing, unless such Event of Default
shall have been waived by a majority in interest of all Notes issued pursuant to the Purchase Agreement, the Holder shall have
the right to declare all obligations hereunder to become immediately due and payable and to exercise any and all rights and remedies
provided for in this Agreement or under applicable law.

 

Article
IV. MISCELLANEOUS

 

4.1         Failure or
Indulgence Not Waiver. No failure or delay on the part of the Holder in the exercise of any power, right or privilege hereunder
shall operate as a waiver thereof, nor shall any single or partial exercise of any such power, right or privilege preclude other
or further exercise thereof or of any other right, power or privileges. All rights and remedies existing hereunder are cumulative
to, and not exclusive of, any rights or remedies otherwise available.

 

4.2         Notices.
All notices, demands, requests, consents, approvals, and other communications required or permitted hereunder shall be in writing
and, unless otherwise specified herein, shall be (i) personally served, (ii) deposited in the mail, registered or certified, return
receipt requested, postage prepaid, (iii) delivered by reputable air courier service with charges prepaid, or (iv) transmitted
by hand delivery, telegram, or facsimile, addressed as set forth below or to such other address as such party shall have specified
most recently by written notice. Any notice or other communication required or permitted to be given hereunder shall be deemed
effective (a) upon hand delivery or delivery by facsimile, with accurate confirmation generated by the transmitting facsimile machine,
at the address or number designated below (if delivered on a business day during normal business hours where such notice is to
be received), or the first business day following such delivery (if delivered other than on a business day during normal business
hours where such notice is to be received) or (b) on the second business day following the date of mailing by express courier service,
fully prepaid, addressed to such address, or upon actual receipt of such mailing, whichever shall first occur. The addresses for
such communications shall be:

 

    	11

     

    

 

If to the Borrower, to:

BioHiTech Global, Inc.

80 Red Schoolhouse Road, Suite
101

Chestnut Ridge, NY 10977

Attention:

Email:

 

With a copy by fax
only to (which copy shall not constitute notice):

 

If to the Holder:

[ ]

 

With a copy by fax
only to (which copy shall not constitute notice):

[ ]

 

4.3         Amendments.
This Note and any provision hereof may only be amended by an instrument in writing signed by the Borrower and the Holder. The term
“Note” and all reference thereto, as used throughout this instrument, shall mean this instrument (and the other Notes
issued pursuant to the Purchase Agreement) as originally executed, or if later amended or supplemented, then as so amended or supplemented.

 

4.4         Assignability.
This Note shall be binding upon the Borrower and its successors and assigns, and shall inure to be the benefit of the Holder and
its successors and assigns. Each transferee of this Note must be an “accredited investor” (as defined in Rule 501(a)
of the 1933 Act). Notwithstanding anything in this Note to the contrary, this Note may be pledged as collateral in connection with
a bona fide margin account or other lending arrangement.

 

4.5         Cost of Collection.
If default is made in the payment of this Note, the Borrower shall pay the Holder hereof costs of collection, including reasonable
attorneys’ fees.

 

    	12

     

    

 

4.6         Governing Law.
This Note shall be governed by and construed in accordance with the laws of the State of New York without regard to principles
of conflicts of laws. Any action brought by either party against the other concerning the transactions contemplated by this Note
shall be brought only in the state courts of New York or in the federal courts located in the state and county of New York. The
parties to this Note hereby irrevocably waive any objection to jurisdiction and venue of any action instituted hereunder and shall
not assert any defense based on lack of jurisdiction or venue or based upon forum non conveniens. The Borrower and Holder
waive trial by jury. The prevailing party shall be entitled to recover from the other party its reasonable attorney's fees and
costs. In the event that any provision of this Note or any other agreement delivered in connection herewith 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 with 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 any agreement. Each party
hereby irrevocably waives personal service of process and consents to process being served in any suit, action or proceeding in
connection with this Agreement or any other Transaction Document by mailing a copy thereof via registered or certified mail or
overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement 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 other manner permitted by law.

 

4.7         Certain Amounts.
Whenever pursuant to this Note the Borrower is required to pay an amount in excess of the outstanding principal amount (or the
portion thereof required to be paid at that time) plus accrued and unpaid interest plus Default Interest on such interest, the
Borrower and the Holder agree that the actual damages to the Holder from the receipt of cash payment on this Note may be difficult
to determine and the amount to be so paid by the Borrower represents stipulated damages and not a penalty and is intended to compensate
the Holder in part for loss of the opportunity to convert this Note and to earn a return from the sale of shares of Common Stock
acquired upon conversion of this Note at a price in excess of the price paid for such shares pursuant to this Note. The Borrower
and the Holder hereby agree that such amount of stipulated damages is not plainly disproportionate to the possible loss to the
Holder from the receipt of a cash payment without the opportunity to convert this Note into shares of Common Stock.

 

4.8         Purchase Agreement.
By its acceptance of this Note, each party agrees to be bound by the applicable terms of the Purchase Agreement.

 

4.9         Notice of Corporate
Events. Except as otherwise provided below, the Holder of this Note shall have no rights as a Holder of Common Stock unless
and only to the extent that it converts this Note into Common Stock. The Borrower shall provide the Holder with prior notification
of any meeting of the Borrower’s shareholders (and copies of proxy materials and other information sent to shareholders).
In the event of any taking by the Borrower of a record of its shareholders for the purpose of determining shareholders who are
entitled to receive payment of any dividend or other distribution, any right to subscribe for, purchase or otherwise acquire (including
by way of merger, consolidation, reclassification or recapitalization) any share of any class or any other securities or property,
or to receive any other right, or for the purpose of determining shareholders who are entitled to vote in connection with any proposed
sale, lease or conveyance of all or substantially all of the assets of the Borrower or any proposed liquidation, dissolution or
winding up of the Borrower, the Borrower shall mail a notice to the Holder, at least twenty (20) days prior to the record date
specified therein (or thirty (30) days prior to the consummation of the transaction or event, whichever is earlier), of the date
on which any such record is to be taken for the purpose of such dividend, distribution, right or other event, and a brief statement
regarding the amount and character of such dividend, distribution, right or other event to the extent known at such time. The Borrower
shall make a public announcement of any event requiring notification to the Holder hereunder substantially simultaneously with
the notification to the Holder in accordance with the terms of this Section 4.9.

 

    	13

     

    

 

4.10         Remedies.
The Borrower acknowledges that a breach by it of its obligations hereunder will cause irreparable harm to the Holder, by vitiating
the intent and purpose of the transaction contemplated hereby. Accordingly, the Borrower acknowledges that the remedy at law for
a breach of its obligations under this Note will be inadequate and agrees, in the event of a breach or threatened breach by the
Borrower of the provisions of this Note, that the Holder shall be entitled, in addition to all other available remedies at law
or in equity, and in addition to the penalties assessable herein, to an injunction or injunctions restraining, preventing or curing
any breach of this Note and to enforce specifically the terms and provisions thereof, without the necessity of showing economic
loss and without any bond or other security being required.

 

IN WITNESS WHEREOF, Borrower
has caused this Note to be signed as of the date set forth above.

 

	BIOHITECH GLOBAL, INC.	 
	 	 	 
	By:	 	 
	 	Name:	 
	 	Title:	 

 

    	14

     

    

 

EXHIBIT A — NOTICE OF CONVERSION

 

The undersigned hereby
elects to convert $_________________ principal amount of the Note (defined below) into that number
of shares of Common Stock to be issued pursuant to the conversion of the Note (“Common Stock”) as set forth
below, of BIOHITECH, INC., a Delaware corporation (the “Borrower”) according to the conditions of the convertible note
of the Borrower dated as of May [ ], 2017 (the “Note”), as of the date written below. No fee will be charged to the
Holder for any conversion, except for transfer taxes, if any.

 

Box Checked as to applicable
instructions:

 

		 ̈	If eligible, the Borrower shall electronically transmit the Common Stock issuable pursuant to this
Notice of Conversion to the account of the undersigned or its nominee with DTC through its Deposit Withdrawal Agent Commission
system (“DWAC Transfer”).

 

Name of DTC Prime Broker:

Account Number:

 

		 ̈	The undersigned hereby requests that the Borrower issue a certificate or certificates for the number
of shares of Common Stock set forth below (which numbers are based on the Holder’s calculation attached hereto) in the name(s)
specified immediately below or, if additional space is necessary, on an attachment hereto:

 

_____________________________

 

	Date of Conversion:  	_____________
	Applicable Conversion Price: 	$____________
	Number of Shares of Common Stock to be Issued	 
	Pursuant to Conversion of the Notes:  	______________
	Amount of Principal Balance Due remaining	 
	Under the Note after this conversion:	______________

 

	 	 
	Note Holder	 
	 	 
	 	 
	Witness	 

 

    	15Exhibit 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.

 

BIOHITECH GLOBAL, INC. 

 

COMMON STOCK PURCHASE WARRANT

 

	Warrant Shares: _________	Issue Date:  April __, 2017

 

THIS COMMON STOCK
PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [______________] or its assigns
(the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions
hereinafter set forth, at any time after the Issue Date set forth above (the “Initial Exercise Date”)
and on or prior to the close of business on the five (5) year anniversary of the Initial Exercise Date (the “Termination
Date”) but not thereafter, to subscribe for and purchase from BioHiTech Global, Inc., a Delaware corporation (the
“Company”), up to [_________] shares (as subject to adjustment hereunder, the “Warrant Shares”)
of Common Stock. The purchase price of one share of Common Stock under this Warrant shall be equal to the Exercise Price, as 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 original issue discount convertible promissory 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 $3.75 per share.

 

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

 

1.3         “Shares”
or “Warrant Shares” means the shares of Common Stock issuable under this Warrant, as set forth in Section
2 below.

 

2.         Number
of Shares and Exercise Price

 

2.1         This Warrant shall
be exercisable for such number of Warrant Shares as set forth above, 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 Initial Exercise Date and continuing thereafter
and from time to time on or prior to the Expiration Date.

 

    	1

     

    

 

Exhibit 10.3 Form of Warrant

 

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).

 

3.3         Cashless Exercise.
If, but only if, at the time of exercise hereof there is no effective registration statement registering, or the prospectus contained
therein is not available for the issuance of the Warrant Shares to the Holder, then this Warrant may be exercised, in whole or
in part, at such time by means of a “cashless exercise” in which the Holder shall be entitled to receive a number of
Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:

 

(A) = as applicable:
(i) the VWAP on the Trading Day immediately preceding the date of the applicable Notice of Exercise if such Notice of Exercise
is (1) both executed and delivered pursuant to Section 2(a) hereof on a day that is not a Trading Day or (2) both executed and
delivered pursuant to Section 2(a) hereof on a Trading Day prior to the opening of “regular trading hours” (as defined
in Rule 600(b)(64) of Regulation NMS promulgated under the federal securities laws) on such Trading Day, (ii) the Bid Price of
the Common Stock on the principal Trading Market as reported by Bloomberg L.P. as of the time of the Holder’s execution of
the applicable Notice of Exercise if such Notice of Exercise is executed during “regular trading hours” on a Trading
Day and is delivered within two (2) hours thereafter pursuant to Section 2(a) hereof or (iii) the VWAP on the date of the applicable
Notice of Exercise if the date of such Notice of Exercise is a Trading Day and such Notice of Exercise is both executed and delivered
pursuant to Section 1(a) hereof after the close of “regular trading hours” on such Trading Day;

 

    	2

     

    

 

Exhibit 10.3 Form of Warrant

 

(B) = the
Exercise Price of this Warrant, as adjusted hereunder; and

 

(X) =
the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant
if such exercise were by means of a cash exercise rather than a cashless exercise.

 

“Bid
Price” means, for any date, the price determined by the following: (a) if the Common Stock is then listed or quoted on
a Trading Market, the bid price of the Common Stock during the two (2) hours prior to the delivery of the applicable Notice of
Exercise, as such bid price is selected by the Holder, on the Trading Market on which the Common Stock is then listed or quoted
as reported by Bloomberg L.P. (based on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)) or
(b) in all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in
good faith by the Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company,
the fees and expenses of which shall be paid by the Company.

 

“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed
or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding
date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading
Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b) if OTCQB or OTCQX is not a Trading Market, the
volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as applicable,
(c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock are then
reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding
to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all other
cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith by the
Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees and
expenses of which shall be paid by the Company.

 

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 up to the nearest whole
share.

 

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.

 

    	3

     

    

 

Exhibit 10.3 Form of Warrant

 

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 thereof, 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       Adjustment
upon Issuance of Common Stock or Common Stock Equivalents. If at any time on or after the Initial Exercise Date the Company
issues or sells, or in accordance with this is deemed to have issued or sold, any warrants to purchase shares of Common Stock or
Common Stock Equivalents at an exercise price (the “New Issuance Price”) less than a price (the “Applicable Price”)
equal to the Exercise Price in effect immediately prior to such issue or sale or deemed issuance or sale (the foregoing, a “Dilutive
Issuance”), then immediately after such Dilutive Issuance the Exercise Price then in effect shall be reduced to an amount
equal to the New Issuance Price. For the purposes of this Section 9.3, “Common Stock Equivalents” means any securities
of the Company which would entitle the holder thereof to acquire at any time Common Stock, including, without limitation, any debt,
preferred stock, right, option, warrant or other instrument that is at any time convertible into or exercisable or exchangeable
for, or otherwise entitles the holder thereof to receive, Common Stock, excluding those issued under employee stock compensation
plans.

 

9.4       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.

 

    	4

     

    

 

Exhibit 10.3 Form of Warrant

 

10.         Miscellaneous.

 

10.1      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.

 

10.2      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 10.2 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.

 

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

 

10.4      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.

 

10.5      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.

 

10.6      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.

 

10.7      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.

 

    	5

     

    

 

Exhibit 10.3 Form of Warrant

 

10.8      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.

 

10.9      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]

 

    	6

     

    

 

Exhibit 10.3 Form of Warrant

 

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:	 

 

    	7

     

    

 

Exhibit 10.3 Form of Warrant

 

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)	 	 	 

 

    	8

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