Document:

PROMISSORY NOTE AGREEMENT

 

	$300,000	November 26, 2013

 

FOR VALUE RECEIVED, ARMADA WATER ASSETS,
INC., a Nevada corporation with an address of 2425 Fountain View Drive, Suite 300, Houston, TX, 77057 (“Maker”), promises
to pay to the order of WILLIAM MILLER, an individual, with an address of 2216 Sunset Boulevard, Houston, Texas 77005, his successors
and assigns (“Holder”), the principal sum of Three Hundred Thousand Dollars ($300,000.00), in lawful money of the United
States of America, together with interest thereon as hereinafter specified.

 

The principal balance of this Note Agreement,
together with all accrued but unpaid interest accrued thereon, shall be due and payable in full on the “Maturity Date”,
which shall be the earlier of: (i) the one year anniversary of the date hereof, or on such earlier date that the Maker completes
a public offering of new equity securities that yields gross proceeds to the Maker in excess of $10,000,000.

 

The principal balance of this Note Agreement
shall accrue interest at a rate of ten percent (10%) per annum (the “Interest Rate”). Accrued interest on the outstanding
principal balance of this Note Agreement will be due and payable on the Maturity Date.

 

Payments under this Note Agreement shall
be made to Holder at the address reflected above or at such other such address as Holder may designate in writing from time to
time. Maker will have the right to prepay any or all of the principal balance outstanding under this Note Agreement in whole or
in part at any time and from time to time without notice, premium or penalty. Any such prepayment shall be applied first to any
unpaid interest that may have accrued through the date of payment, and then to the unpaid principal balance of this Note Agreement.

 

If Maker fails to make any payment of principal
or interest due under this Note Agreement as and when due, or if Maker fails to keep any other agreement or covenant set forth
herein, and such failure continues uncured for ten (10) days or more after the date on which Holder sends written notice thereof
to Maker specifying such failure with particularity, then Holder may declare Maker to be in default hereunder. For the avoidance
of doubt, the 10-day grace period provided for herein, shall not apply to payment in full of all sums due under the Note Agreement
which shall be due on the Maturity Date.

 

Maker hereby waives presentment and demand
for payment, notice of dishonor, protest and notice of protest of this Note Agreement. Any notice, request, or presentation to
or upon Holder in respect of this Note Agreement may be given or made in writing and shall be deemed to be duly given if delivered
personally, by registered or certified mail, postage prepaid, or by a nationally recognized overnight courier service to the address
set forth above or, if any other address shall at any time be designated for this purpose by Maker in writing to Holder, to such
other address.

 

    	 

    	 

    

 

The rights, powers and remedies of Holder,
available at law, in equity or as stated herein, shall be cumulative and concurrent and may be exercised or otherwise pursued by
Holder singly, successively or concurrently against Maker at the sole discretion of Holder, and may be exercised as often as occasion
therefor shall incur. The failure to exercise any such right or remedy shall in no event be construed as a waiver or release thereof.

 

Holder shall not be deemed, by any act of
omission or commission, to have waived any of his rights or remedies hereunder unless such waiver is in writing and signed by Holder,
and then only to the extent specifically set forth in writing. A waiver on one event shall not be construed as continuing or as
a bar to or waiver of any right or remedy to a subsequent event.

 

Maker agrees to reimburse Holder for all
costs and expenses (including without limitation reasonable attorneys’ fees) incurred by Holder in enforcing the provisions
of this Note Agreement and in collecting on Maker’s obligations hereunder.

 

As an equity inducement for Holder to extend
credit to Maker as evidenced by this Note Agreement, Maker agrees to issue to Holder 45,000 shares of its restricted Common Stock,
$.0001 par value per share (the “Shares”).

 

This Note Agreement shall be governed by
and construed in accordance with the laws of the State of Nevada, without regard to principles of conflicts of laws. Any action
brought by either party against the other concerning the transactions contemplated by this Agreement shall be brought only in the
state courts of Nevada or in the federal courts located in or proximate to, Las Vegas, Nevada. Both parties agree to submit to
the jurisdiction of such courts. 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 Agreement 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 unenforceability of any other provision of this Note Agreement. 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 Holder, or to enforce a judgment or other court in favor of the Holder.

 

This Note Agreement may not be changed or
terminated orally, but only by an agreement in writing signed by the party against whom enforcement of such change or termination
is sought.

 

The provisions of this Note Agreement are
severable. If any term or provision of this Note Agreement shall be held invalid, illegal or unenforceable, the validity of all
other terms and provisions hereof shall in no way be affected thereby.

 

This Note Agreement shall bind Maker and
its successors and assigns, and shall inure to the benefit of Holder and to his personal representatives, successors and assigns.
Notwithstanding the foregoing, Maker may not assign or transfer its rights or obligations hereunder without the express written
consent of Holder which may granted or withheld in Holder’s sole and absolute discretion.

 

    	 

    	 

    

 

It is expressly stipulated and agreed to
be the intent of Maker and Holder at all times to comply with applicable state law or applicable United States federal law (to
the extent that it permits Holder to contract for, charge, take, reserve, or receive a greater amount of interest than under state
law) and that this paragraph shall control every other covenant and agreement in this Note Agreement. If the applicable law (state
or federal) is ever judicially interpreted so as to render usurious any amount called for under this Note Agreement, or contracted
for, charged, taken, reserved, or received with respect to the loan evidenced by this Note Agreement, or if Holder's exercise of
the option to accelerate the Maturity Date, results in Holder having paid any interest in excess of that permitted by applicable
law, then it is Holder's express intent that all excess amounts theretofore collected by Payee shall be credited on the principal
balance of this Note Agreement and all other debt and the provisions of this Note Agreement immediately be deemed reformed and
the amounts thereafter collectible hereunder and thereunder reduced, without the necessity of the execution of any new documents,
so as to comply with the applicable law, but so as to permit the recovery of the fullest amount otherwise called for hereunder
or thereunder. All sums paid or agreed to be paid to Payee for the use, forbearance, or detention of the loan evidenced by the
Note Agreement shall, to the extent permitted by applicable law, be amortized, prorated, allocated, and spread throughout the full
stated term of the Note Agreement until payment in full so that the rate or amount of interest on account of the Note Agreement
does not exceed the maximum lawful rate from time to time in effect and applicable to the loan amount for so long as the Note Agreement
is outstanding. Notwithstanding anything to the contrary contained herein, it is not the intention of Holder to accelerate the
maturity of any interest that has not accrued at the time of such acceleration or to collect unearned interest at the time of such
acceleration.

 

Maker (and the undersigned representative
of Maker, if any) represents that Maker has full power, authority and legal right to execute, deliver and perform its obligations
pursuant to this Note Agreement and that this Note Agreement constitutes the valid and binding obligations of Maker.

 

THE PARTIES HERETO KNOWINGLY, VOLUNTARILY
AND INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION BASED ON THE LOAN, ARISING OUT
OF, UNDER OR IN CONNECTION WITH THIS NOTE AGREEMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENT (WHETHER ORAL OR WRITTEN)
OR ACTION OF ANY PARTY HERETO. THIS PROVISION IS A MATERIAL INDUCEMENT FOR HOLDER’S AGREEMENT TO MAKE THE LOAN, WITHOUT WHICH
LENDER WOULD NOT MAKE THE LOAN. EACH PARTY REPRESENTS AND WARRANTS THAT IT HAS HAD THE OPPORTUNITY TO REVIEW THIS WAIVER WITH ITS
LEGAL COUNSEL AND THAT IF IT HAS SO REVIEWED THIS WAIVER WITH LEGAL COUNSEL IT HAS KNOWINGLY AND VOLUNTARILY WAIVED ITS JURY TRIAL
RIGHTS FOLLOWING SUCH CONSULTATION OR IF IT HAS NOT REVIEWED THIS WAIVER WITH LEGAL COUNSEL HAS DONE SO KNOWINGLY AND INTENTIONALLY
AND AGAINST THE ADVICE OF THE OTHER PARTY WITH THE FULL UNDERSTANDING THAT THIS PROVISION IS LEGALLY ENFORCEABLE IN ACCORDANCE
WITH ITS TERMS. IF FOR ANY REASON THIS JURY TRIAL WAIVER IS DEEMED TO BE UNENFORCEABLE, AND A PARTY HERETO SHALL ELECT JURY TRIAL
AS A DISPUTE RESOLUTION MECHANISM SUCH ELECTION SHALL BE UNENFORCEABLE TO THE MAXIMUM EXTENT PERMITTED BY LAW AND THE DISPUTE SHALL
INSTEAD BE RESOLVED BY JUDICIAL REFERENCE IN ACCORDANCE WITH CALIFORNIA CODE OF CIVIL PROCEDURE SECTION 638, ET SEQ.

 

    	 

    	 

    

 

Maker hereby warrants, represents and covenants
that the loan evidenced hereby is for business or commercial purposes only, and no advance of funds evidenced hereby shall be used
by Maker for personal, family, agricultural or household purposes.

 

The Holder hereby represents and warrants
to the Maker as follows:

 

		a.	The Holder has all necessary power and authority under all applicable provisions of law to execute and deliver this Agreement
and to carry out its provisions. All corporate action on Holder's part required for the lawful execution and delivery of this Agreement
has been or will be effectively be taken prior to the Closing. Upon its execution and delivery, this Agreement will be a valid
and binding obligation of Holder, enforceable in accordance with its terms.

 

		b.	Holder understands that the Shares are being offered and sold pursuant to an exemption from registration contained in the Securities
Act of 1933, as amended (the “Securities Act”), based in part upon Holder's representations including, without limitation,
that the Holder is an "accredited investor" within the meaning of Regulation D under the Securities Act. The Holder confirms
that it has received or has had full access to all the information it considers necessary or appropriate to make an informed investment
decision with respect to the Note Agreement and the Shares. The Holder further confirms that it has had an opportunity to ask questions
and receive answers from the Maker regarding the Maker's business, management and financial affairs and the terms and conditions
of this Note Agreement, and the Shares and to obtain additional information necessary to verify any information furnished to the
Holder or to which the Holder had access.

 

		c.	The Holder has substantial experience in evaluating and investing in private placement transactions of securities in companies
similar to the Maker so that it is capable of evaluating the merits and risks of its investment in the Maker. The Holder understands
that it must bear the economic risk of this investment until the Shares are sold pursuant to: (i) an effective registration statement
under the Securities Act; or (ii) an exemption from registration is available with respect to such sale.

 

		d.	The Holder is acquiring the Note Agreement and the Shares for the Holder's own account for investment only, and not as a nominee
or agent and not with a view towards or for resale in connection with their distribution.

 

		e.	Holder represents that it is an accredited investor within the meaning of Regulation D under the Securities Act.

 

    	 

    	 

    

 

		f.	The Shares shall bear a legend which shall be in substantially the following form until such shares are covered by an effective
registration statement filed with the SEC:

 

"THE SHARES REPRESENTED BY THIS
CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES LAWS. THESE
SHARES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH
SECURITIES ACT AND APPLICABLE STATE LAWS OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO . THAT SUCH REGISTRATION IS NOT REQUIRED."

 

The Holder covenants and agrees with the
Company as follows:

 

		a.	The Holder agrees that it will not disclose, and will not include in any public announcement, the name of the Maker, unless
expressly agreed to by the Maker or unless and until such disclosure is required by law or applicable regulation, and then only
to the extent of such requirement.

 

		b.	The Holder agrees not to effect any sales in the shares of the Maker's Common Stock while in possession of material, non-public
information regarding the Maker if such sales would violate applicable securities law.

 

This Note Agreement may be executed and
delivered by facsimile in two or more counterparts, each of which shall be deemed to be an original, but all of which together
shall constitute one and the same agreement.

 

(Remainder of the page intentionally left
blank)

 

    	 

    	 

    

 

IN WITNESS WHEREOF, intending to be legally
bound thereby, the parties have caused this Note Agreement to be signed in their names effective as of the date hereof.

 

	 	MAKER:
	 	 
	 	ARMADA WATER ASSETS, INC.
	 	 
	 	By:	/s/ Maarten Propper
	 	Name:	Maarten Propper
	 	Title:	Chief Executive Officer
	 	 
	 	HOLDER:
	 	 
	 	WILLIAM MILLER
	 	 
	 	/s/ William Miller IIIExhibit 10.21

 

PROMISSORY NOTE AGREEMENT

 

	$500,000	January 6, 2014

 

FOR VALUE RECEIVED, ARMADA WATER ASSETS,
INC., a Nevada corporation with an address of 2425 Fountain View Drive, Suite 300, Houston, TX, 77057 (“Maker”), promises
to pay to the order of MOONLIGHT ENTERPRISES, LTD., with an address of 2ND Floor, Capital City, Independence Avenue,
Victoria, Mahé, Republic of Seychelles, its successors and assigns (“Holder”), the principal sum of Five Hundred
Thousand Dollars ($500,000.00), in lawful money of the United States of America, together with interest thereon as hereinafter
specified.

 

The principal balance evidenced by this
Promisssory Note Agreement, together with all accrued but unpaid interest accrued thereon, shall be due and payable in full on
the “Maturity Date”, which shall be the earlier of: (i) July 31, 2014, or (ii) on such earlier date that the Maker
completes a public offering of new equity securities that yields gross proceeds to the Maker in excess of $10,000,000.

 

The principal balance of this Promissory
Note Agreement shall accrue interest at a rate of ten percent (10%) per annum (the “Interest Rate”). Accrued interest
on the outstanding principal balance of this Promissory Note Agreement will be due and payable on the Maturity Date.

 

Payments under this Promissory Note Agreement
shall be made to Holder at the address reflected above or at such other such address as Holder may designate in writing from time
to time. Maker will have the right to prepay any or all of the principal balance outstanding under this Promissory Note Agreement
in whole or in part at any time and from time to time without notice, premium or penalty. Any such prepayment shall be applied
first to any unpaid interest that may have accrued through the date of payment, and then to the unpaid principal balance of this
Promissory Note Agreement.

 

If Maker fails to make any payment of principal
or interest due under this Promissory Note Agreement as and when due, or if Maker fails to keep any other agreement or covenant
set forth herein, and such failure continues uncured for ten (10) days or more after the date on which Holder sends written notice
thereof to Maker specifying such failure with particularity, then Holder may declare Maker to be in default hereunder. For the
avoidance of doubt, the 10-day grace period provided for herein, shall not apply to payment in full of all sums due under the Promissory
Note Agreement which shall be due on the Maturity Date.

 

Maker hereby waives presentment and demand
for payment, notice of dishonor, protest and notice of protest of this Promissory Note Agreement. Any notice, request, or presentation
to or upon Holder in respect of this Promissory Note Agreement may be given or made in writing and shall be deemed to be duly given
if delivered personally, by registered or certified mail, postage prepaid, or by a nationally recognized overnight courier service
to the address set forth above or, if any other address shall at any time be designated for this purpose by Maker in writing to
Holder, to such other address.

 

    	 

    	 

    

 

The rights, powers and remedies of Holder,
available at law, in equity or as stated herein, shall be cumulative and concurrent and may be exercised or otherwise pursued by
Holder singly, successively or concurrently against Maker at the sole discretion of Holder, and may be exercised as often as occasion
therefor shall incur. The failure to exercise any such right or remedy shall in no event be construed as a waiver or release thereof.

 

Holder shall not be deemed, by any act of
omission or commission, to have waived any of his rights or remedies hereunder unless such waiver is in writing and signed by Holder,
and then only to the extent specifically set forth in writing. A waiver on one event shall not be construed as continuing or as
a bar to or waiver of any right or remedy to a subsequent event.

 

Maker agrees to reimburse Holder for all
costs and expenses (including without limitation reasonable attorneys’ fees) incurred by Holder in enforcing the provisions
of this Promissory Note Agreement and in collecting on Maker’s obligations hereunder.

 

As an equity inducement for Holder to extend
credit to Maker as evidenced by this Promissory Note Agreement, Maker agrees to issue to Holder 75,000 shares of its restricted
Common Stock, $.0001 par value per share (the “Shares”).

 

This Promissory Note Agreement shall be
governed by and construed in accordance with the laws of the State of Nevada, without regard to principles of conflicts of laws.
Any action brought by either party against the other concerning the transactions contemplated by this Agreement shall be brought
only in the state courts of Nevada or in the federal courts located in or proximate to, Las Vegas, Nevada. Both parties agree to
submit to the jurisdiction of such courts. 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 Promissory Note Agreement 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 unenforceability of any other provision of this Promissory Note
Agreement. 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 Holder, or to enforce a judgment
or other court in favor of the Holder.

 

This Promissory Note Agreement may not be
changed or terminated orally, but only by an agreement in writing signed by the party against whom enforcement of such change or
termination is sought.

 

The provisions of this Promissory Note Agreement
are severable. If any term or provision of this Promissory Note Agreement shall be held invalid, illegal or unenforceable, the
validity of all other terms and provisions hereof shall in no way be affected thereby.

 

This Promissory Note Agreement shall bind
Maker and its successors and assigns, and shall inure to the benefit of Holder and to his personal representatives, successors
and assigns. Notwithstanding the foregoing, Maker may not assign or transfer its rights or obligations hereunder without the express
written consent of Holder which may granted or withheld in Holder’s sole and absolute discretion.

 

    	 

    	 

    

 

It is expressly stipulated and agreed to
be the intent of Maker and Holder at all times to comply with applicable state law or applicable United States federal law (to
the extent that it permits Holder to contract for, charge, take, reserve, or receive a greater amount of interest than under state
law) and that this paragraph shall control every other covenant and agreement in this Promissory Note Agreement. If the applicable
law (state or federal) is ever judicially interpreted so as to render usurious any amount called for under this Promissory Note
Agreement, or contracted for, charged, taken, reserved, or received with respect to the loan evidenced by this Promissory Note
Agreement, or if Holder's exercise of the option to accelerate the Maturity Date, results in Holder having paid any interest in
excess of that permitted by applicable law, then it is Holder's express intent that all excess amounts theretofore collected by
Payee shall be credited on the principal balance of this Promissory Note Agreement and all other debt and the provisions of this
Promissory Note Agreement immediately be deemed reformed and the amounts thereafter collectible hereunder and thereunder reduced,
without the necessity of the execution of any new documents, so as to comply with the applicable law, but so as to permit the recovery
of the fullest amount otherwise called for hereunder or thereunder. All sums paid or agreed to be paid to Payee for the use, forbearance,
or detention of the loan evidenced by the Promissory Note Agreement shall, to the extent permitted by applicable law, be amortized,
prorated, allocated, and spread throughout the full stated term of the Promissory Note Agreement until payment in full so that
the rate or amount of interest on account of the Promissory Note Agreement does not exceed the maximum lawful rate from time to
time in effect and applicable to the loan amount for so long as the Promissory Note Agreement is outstanding. Notwithstanding anything
to the contrary contained herein, it is not the intention of Holder to accelerate the maturity of any interest that has not accrued
at the time of such acceleration or to collect unearned interest at the time of such acceleration.

 

Maker (and the undersigned representative
of Maker, if any) represents that Maker has full power, authority and legal right to execute, deliver and perform its obligations
pursuant to this Promissory Note Agreement and that this Promissory Note Agreement constitutes the valid and binding obligations
of Maker.

 

THE PARTIES HERETO KNOWINGLY, VOLUNTARILY
AND INTENTIONALLY WAIVE ANY RIGHT THEY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION BASED ON THE LOAN, ARISING OUT
OF, UNDER OR IN CONNECTION WITH THIS PROMISSORY NOTE AGREEMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENT (WHETHER
ORAL OR WRITTEN) OR ACTION OF ANY PARTY HERETO. THIS PROVISION IS A MATERIAL INDUCEMENT FOR HOLDER’S AGREEMENT TO MAKE THE
LOAN, WITHOUT WHICH LENDER WOULD NOT MAKE THE LOAN. EACH PARTY REPRESENTS AND WARRANTS THAT IT HAS HAD THE OPPORTUNITY TO REVIEW
THIS WAIVER WITH ITS LEGAL COUNSEL AND THAT IF IT HAS SO REVIEWED THIS WAIVER WITH LEGAL COUNSEL IT HAS KNOWINGLY AND VOLUNTARILY
WAIVED ITS JURY TRIAL RIGHTS FOLLOWING SUCH CONSULTATION OR IF IT HAS NOT REVIEWED THIS WAIVER WITH LEGAL COUNSEL HAS DONE SO KNOWINGLY
AND INTENTIONALLY AND AGAINST THE ADVICE OF THE OTHER PARTY WITH THE FULL UNDERSTANDING THAT THIS PROVISION IS LEGALLY ENFORCEABLE
IN ACCORDANCE WITH ITS TERMS. IF FOR ANY REASON THIS JURY TRIAL WAIVER IS DEEMED TO BE UNENFORCEABLE, AND A PARTY HERETO SHALL
ELECT JURY TRIAL AS A DISPUTE RESOLUTION MECHANISM SUCH ELECTION SHALL BE UNENFORCEABLE TO THE MAXIMUM EXTENT PERMITTED BY LAW
AND THE DISPUTE SHALL INSTEAD BE RESOLVED BY JUDICIAL REFERENCE IN ACCORDANCE WITH CALIFORNIA CODE OF CIVIL PROCEDURE SECTION 638,
ET SEQ.

 

    	 

    	 

    

 

Maker hereby warrants, represents and covenants
that the loan evidenced hereby is for business or commercial purposes only, and no advance of funds evidenced hereby shall be used
by Maker for personal, family, agricultural or household purposes.

 

The Holder hereby represents and warrants
to the Maker as follows:

 

		a.	The Holder has all necessary power and authority under all applicable provisions of law to execute and deliver this Agreement
and to carry out its provisions. All corporate action on Holder's part required for the lawful execution and delivery of this Agreement
has been or will be effectively be taken prior to the Closing. Upon its execution and delivery, this Agreement will be a valid
and binding obligation of Holder, enforceable in accordance with its terms.

 

		b.	Holder understands that the Shares are being offered and sold as “restricted securities” pursuant to an exemption
from registration contained in the Securities Act of 1933, as amended (the “Securities Act”), based in part upon Holder's
representations including, without limitation, that the Holder is an "accredited investor" within the meaning of Regulation
D under the Securities Act. The Holder confirms that it has received or has had full access to all the information it considers
necessary or appropriate to make an informed investment decision with respect to the Promissory Note Agreement and the Shares.
The Holder further confirms that it has had an opportunity to ask questions and receive answers from the Maker regarding the Maker's
business, management and financial affairs and the terms and conditions of this Promissory Note Agreement, and the Shares and to
obtain additional information necessary to verify any information furnished to the Holder or to which the Holder had access.

 

		c.	The Holder has substantial experience in evaluating and investing in private placement transactions of securities in companies
similar to the Maker so that it is capable of evaluating the merits and risks of its investment in the Maker. The Holder understands
that it must bear the economic risk of this investment until the Shares are sold pursuant to: (i) an effective registration statement
under the Securities Act; or (ii) an exemption from registration is available with respect to such sale.

 

    	 

    	 

    

 

		d.	The Holder is acquiring the Promissory Note Agreement and the Shares for the Holder's own account for investment purposes only,
and not as a nominee or agent and not with a view towards or for resale in connection with their distribution.

 

		e.	Holder represents that it is an accredited investor within the meaning of Regulation D under the Securities Act.

 

		f.	The Shares shall bear a legend which shall be in substantially the following form until such shares are covered by an effective
registration statement filed with the SEC:

 

"THE SHARES REPRESENTED BY THIS
CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES LAWS. THESE
SHARES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH
SECURITIES ACT AND APPLICABLE STATE LAWS OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE MAKER THAT SUCH REGISTRATION IS
NOT REQUIRED."

 

		g.	The Holder understands that neither the United States Securities and Exchange Commission (“SEC”) nor any securities
commission or other governmental authority of any state, country or other jurisdiction has approved the issuance of the Shares
or passed upon or endorsed the merits of the Shares, or this Promissory Note Agreement.

 

		h.	The Holder understands that an investment in the Shares involves a high degree of risk as the Maker remains in the early stage
of its development, having only recently combined a number of diverse business units. Thus, the Maker and its subsidiaries have
only a very brief history of consolidated operations, and it is uncertain how these business units will operate on a combined basis
and whether these various business units can be operated at a profit. Accordingly, the Shares are a suitable investment only for
those investors who can afford a total loss of their investment and who recognize the material risk associated with investing in
an early-stage enterprise.

 

The Holder covenants and agrees with the
Company as follows:

 

		a.	The Holder agrees that it will not disclose, and will not include in any public announcement, the name of the Maker, unless
expressly agreed to by the Maker or unless and until such disclosure is required by law or applicable regulation, and then only
to the extent of such requirement.

 

		b.	The Holder agrees not to effect any sales in the shares of the Maker's Common Stock while in possession of material, non-public
information regarding the Maker if such sales would violate applicable securities law.

 

    	 

    	 

    

 

This Promissory Note Agreement may be executed
and delivered by facsimile in two or more counterparts, each of which shall be deemed to be an original, but all of which together
shall constitute one and the same agreement.

 

(Remainder of the page intentionally left
blank)

 

    	 

    	 

    

 

IN WITNESS WHEREOF, intending to be legally
bound thereby, the parties have caused this Promissory Note Agreement to be signed in their names effective as of the date hereof.

 

	 	MAKER:
	 	 
	 	ARMADA WATER ASSETS, INC.
	 	 
	 	By:	/s/ Maarten Propper
	 	Name:	Maarten Propper
	 	Title:	Chief Executive Officer
	 	 
	 	HOLDER:
	 	 
	 	MOONLIGHT ENTERPRISES LTD.
	 	 
	 	/s/ Filippo Ferrari

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