Document:

Dated: ____________

 

NEITHER THIS NOTE NOR THE SECURITIES
INTO WHICH THIS NOTE IS CONVERTIBLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION
OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS.

 

QUANTUMSPHERE, INC.

 

CONVERTIBLE PROMISSORY NOTE

  

This convertible promissory note (the "Note")
is issued by QUANTUMSPHERE, INC., a California corporation (the "Company"), to ____________________
(the "Holder").

 

FOR VALUE RECEIVED, the Company
hereby promises to pay to the Holder the principal amount of ______________________________ DOLLARS ($__________)
(the "Loan") together with accrued but unpaid interest on or before the Maturity Date in accordance with the provisions
hereof. In conjunction with the issuance of the Note, the Company hereby issues a common stock purchase warrant (the “Warrant”)
to Holder in the form attached hereto as Exhibit A.

 

		1.	Definitions

 

In addition to the terms defined elsewhere
in this Note, the following terms have the meanings indicated:

 

		(a)	"Bankruptcy Event" means any of the following events: (i) the Company commences
a case or other proceeding under any bankruptcy, reorganization, arrangement, adjustment of debt, relief of debtors, dissolution,
insolvency or liquidation or similar law of any jurisdiction relating to the Company; (ii) there is commenced against the Company
any such case or proceeding that is not dismissed within 60 calendar days after commencement; (iii) the Company is adjudicated
insolvent or bankrupt or any order of relief or other order approving any such case or proceeding is entered; (iv) the Company
suffers any appointment of any custodian or the like for it or any substantial part of its property that is not discharged or stayed
within 60 calendar days; or (v) the Company makes a general assignment for the benefit of creditors;

 

		(b)	"Business Day" means any day except Saturday, Sunday and any day which shall be
a federal legal holiday or a day on which banking institutions in the State of Nevada are authorized or required by law or other
governmental action to close;

 

		(c)	"Event of Default" has the meaning ascribed thereto in Section 4(a);

 

    	 

    	 

    

 

		(d)	"Maturity Date" means ninety (90) days from the date hereof, unless earlier paid
pursuant to Section 2 hereof, or converted pursuant to Section 3 hereof; and

 

		(e)	"Person" means an individual or corporation, partnership, trust, incorporated
or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision
thereof) or other entity of any kind.

 

		2.	Interest; Principal; Make Good Provision

 

		(a)	Interest. The Note shall bear simple interest at the rate of ten percent (10%) per annum,
commencing on the date of issuance ("Interest"). Interest will be paid in full on the Maturity Date, unless Holder
elects to convert the Note and all interest accrued hereunder per Section 3 below.

 

		(b)	Principal. Unless earlier converted pursuant to Section 3 hereinbelow, the Loan shall be
repaid on the ninety (90) day anniversary hereof.

 

		(c)	Application of Payments. Except as otherwise expressly provided herein, each payment under
this Note shall be applied (i) first to the payment of all accrued but unpaid Interest, and (iii) then to the reduction of the
principal amount.

 

		(d)	Make Good Provision. In the event the Company elects, on or before the earlier of the 90-day
anniversary of this Note or repayment thereof, to offer more favorable bridge financing terms to a third party investor, then in
such event the terms hereof shall be modified to reflect the more favorable bridge financing terms.

 

		3.	Conversion

 

The principal amount of this Note and all
accrued but unpaid Interest is convertible as follows:

 

		(a)	Conversion. Holder shall have the right, at any time prior to the payment in full of the
Note, to convert the outstanding principal and accrued interest on the Note into shares of common stock of the Company at the conversion
rate of $0.7159 per share. Holder shall have the right to payment of accrued interest on the Note in the form of cash in lieu of
conversion into shares of common stock per this Section 3(a).

 

		(b)	The Company shall deliver, at least five (5) Business Days before repayment of the Note, written
notice informing the Holder of its intent to repay the Note and offering Holder the right to convert the Note per the terms set
forth herein and specifying (I) the outstanding principal amount of the Loan and all accrued but unpaid Interest, (II) the number
of shares of common stock that the Holder would receive upon conversion, and (III) the date on which such conversion would occur.
The Holder shall provide written notice of its intent to convert the Note within three (3) Business Days of receipt of the notice.
The Holder shall surrender the Note to the Company at the location designated in Section 6 hereof on or before the date of conversion
or repayment, as the case may be, and Holder shall receive, (A) on the effective date of conversion, if applicable, a common stock
certificate in the number of shares of common stock represented by (i) the then outstanding principal and accrued Interest under
the Note (assuming Holder is converting the accrued interest), divided by (B) $0.7159 per share, or (b) in the case of repayment
of the Note, a check made payable to Holder in the amount of the then outstanding principal and accrued interest.

 

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		4.	Event of Default

 

		(a)	An "Event of Default", wherever used herein, means any one of the following events:

 

		(i)	any default in the payment of the principal of, Interest on or other charges in respect of this
Note, as and when the same shall become due and payable (whether on the Maturity Date or by acceleration or otherwise);

 

		(ii)	the occurrence of a Bankruptcy Event; or

 

		(iii)	the Company shall commit any material breach or default of any material provision of this Note
(except as set forth in Section 4(a)(i)), which is not cured within thirty (30) Business Days following written notice to the Company
from the Holder specifying in reasonable detail such breach or default.

 

		(b)	Upon and during the continuance of an Event of Default, the Interest rate shall be increased to
18% per annum, compounded monthly.

 

		5.	Covenants

 

		(a)	Financial Statements. Prior to the repayment of the Note in full, or conversion of this
Note pursuant to Section 3, the Company shall provide the Holder with (i) quarterly unaudited financial statements of the Company,
including a balance sheet, income statement and a statement of cash flows, within 45 calendar days of the end of each fiscal quarter,
and (ii) annual unaudited financial statements of the Company within 90 calendar days of the end of each fiscal year.

 

		6.	Notices

 

Any notice, demand or
request which may be permitted, required or desired to be given in connection with herewith shall be given in writing and directed
to the parties hereto as follows:

 

 

	If to the Company, addressed as follows:	QuantumSphere, Inc.

2905 Tech Center Dr.

Santa Ana, CA 92705
 Attention: Kevin D. Maloney
 Facsimile No.: (714) 545-6265

	 	 	 
	If to the Holder, addressed as follows:	 	 
	 	 	 
	 	 	 
	 	 	 
	 	Facsimile No.: 	 

 

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Notices shall be deemed
properly delivered and received when delivered to the primary notice party (without regard to the copied parties) (i) if personally
delivered, upon receipt or refusal to accept delivery, (ii) if sent via facsimile, upon mechanical confirmation of successful transmission
thereof generated by the sending telecopy machine, (iii) if sent by a commercial overnight courier for delivery on the next business
day, on the first business day after deposit with such courier service (or the third business day if sent to an address not in
the United States), or (iv) if sent by registered or certified mail, five Business Days after deposit thereof in the U.S. mail.
Any party may change its address for delivery of notices by properly notifying the others pursuant to this Section 6.

 

		7.	General

 

		(a)	Amendments; Waivers. No provision of this Note may be waived or amended except in a written
instrument signed, in the case of an amendment, by the Company and the Holder or, in the case of a waiver, by the party against
whom enforcement of any such waiver is sought. No waiver of any default with respect to any provision, condition or requirement
of this Note shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other
provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in
any manner impair the exercise of any such right. In the event that there is more than one Note holder, any amendments or waivers
with respect to the Notes may be made with the approval of a majority in interest of the Note holders.

 

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

 

		(c)	Successors and Assigns. This Note shall be binding upon and inure to the benefit of the
parties and their successors and permitted assigns. Neither the Company nor the Holder may assign this Note or any rights or obligations
hereunder without the prior written consent of the other party.

 

		(d)	Severability. If any provision of this Note is held to be invalid or unenforceable in any
respect, the validity and enforceability of the remaining terms and provisions of this Note shall not in any way be affected or
impaired thereby and the parties will attempt to agree upon a valid and enforceable provision that is a reasonable substitute therefor,
and upon so agreeing, shall incorporate such substitute provision in this Note.

 

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		(e)	Replacement of the Note. If any certificate or instrument evidencing this Note is mutilated,
lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation
thereof, or in lieu of and substitution therefor, a new certificate or instrument, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. The applicants
for a new certificate or instrument under such circumstances shall also pay any reasonable third-party costs associated with the
issuance of such replacement Note.

 

		(f)	Usury. To the extent it may lawfully do so, the Company hereby agrees not to insist upon
or plead or in any manner whatsoever claim, and will resist any and all efforts to be compelled to take the benefit or advantage
of, usury laws wherever enacted, now or at any time hereafter in force, in connection with any claim, action or proceeding that
may be brought by the Holder in order to enforce any right or remedy under this Note. Notwithstanding any provision to the contrary
contained in this Note, it is expressly agreed and provided that the total liability of the Company under this Note for payments
in the nature of interest shall not exceed the maximum lawful rate authorized under applicable law (the "Maximum Rate"),
and, without limiting the foregoing, in no event shall any rate of interest or default interest, or both of them, when aggregated
with any other sums in the nature of interest that the Company may be obligated to pay under this Note exceed such Maximum Rate.
It is agreed that if the maximum contract rate of interest allowed by law and applicable to this Note is increased or decreased
by statute or any official governmental action subsequent to the date hereof, the new maximum contract rate of interest allowed
by law will be the Maximum Rate of interest applicable to this Note from the effective date forward, unless such application is
precluded by applicable law.

 

		(g)	Governing Law. All questions concerning the construction, validity, enforcement and interpretation
of this Note shall be governed by and construed and enforced in accordance with the internal laws of the State of California, without
regard to the principles of conflicts of law thereof.

 

IN WITNESS WHEREOF,
the Company has caused this Note to be duly executed by duly authorized officer as of the date first written above.

 

	 	QUANTUMSPHERE, INC.
	 	 	 
	 	 	 
	 	By: 	
	 		Kevin D. Maloney
	 	 	Chief Executive Officer & President

 

    	4Dated: __________

 

NEITHER THIS NOTE NOR THE SECURITIES
INTO WHICH THIS NOTE IS CONVERTIBLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION
OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS.

 

QUANTUMSPHERE, INC.

 

AMENDED & RESTATED

CONVERTIBLE PROMISSORY NOTE

  

This Amended & Restated Convertible
Promissory Note (the "Note") is issued by QUANTUMSPHERE, INC., a California corporation (the "Company"),
to ____________________ (the "Holder") and replaces in it is entirety that certain convertible promissory
note issued in favor of Holder on July 11, 2013.

 

FOR VALUE RECEIVED, the Company
hereby promises to pay to the Holder the principal amount of ______________________________ ($__________)
(the "Principal") together with accrued but unpaid interest on or before the Maturity Date in accordance with
the provisions hereof.

 

		1.	Definitions

 

In addition to the terms defined elsewhere
in this Note, the following terms have the meanings indicated:

 

		(a)	"Bankruptcy Event" means any of the following events: (i) the Company commences
a case or other proceeding under any bankruptcy, reorganization, arrangement, adjustment of debt, relief of debtors, dissolution,
insolvency or liquidation or similar law of any jurisdiction relating to the Company; (ii) there is commenced against the Company
any such case or proceeding that is not dismissed within 60 calendar days after commencement; (iii) the Company is adjudicated
insolvent or bankrupt or any order of relief or other order approving any such case or proceeding is entered; (iv) the Company
suffers any appointment of any custodian or the like for it or any substantial part of its property that is not discharged or stayed
within 60 calendar days; or (v) the Company makes a general assignment for the benefit of creditors;

 

		(b)	"Business Day" means any day except Saturday, Sunday and any day which shall be
a federal legal holiday or a day on which banking institutions in the State of Nevada are authorized or required by law or other
governmental action to close;

 

    	 

    	 

    

 

		(c)	"Event of Default" has the meaning ascribed thereto in Section 4(a);

 

		(d)	"Maturity Date" means December 31, 2013; and

 

		(e)	"Person" means an individual or corporation, partnership, trust, incorporated
or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision
thereof) or other entity of any kind.

 

		2.	Interest; Principal

 

		(a)	Interest. The Note shall bear simple interest at the rate of five percent (5%) per annum,
commencing on the date of issuance on July 11, 2013 and concluding on December 31, 2013 ("Interest"). Interest
shall be due and payable on the Maturity Date, unless the Note, consisting of the Principal and all accrued but unpaid Interest
thereon, is converted pursuant to the terms of Section 3 herein.

 

		(b)	Principal. Unless earlier converted pursuant to the terms of Section 3 herein, the Principal
shall be repaid on the Maturity Date.

 

		(c)	Application of Payments. Except as otherwise expressly provided herein, each payment under
this Note shall be applied (i) first to the payment of all accrued but unpaid Interest, and (iii) then to the reduction of the
Principal.

 

		3.	Mandatory Conversion

 

The Principal and all accrued but unpaid
Interest shall be converted upon the occurrence of the Conversion Event, and on the Conversion Terms, as set forth below:

 

		(a)	Conversion Trigger Event. The merger (“Merger”) of the Company with a publicly
reporting company shall trigger a mandatory conversion on the terms described in Section 3(b) below.

 

		(b)	Conversion Terms. Immediately prior to the closing of the Merger, all outstanding Principal
and accrued Interest thereon shall be converted into units of the Company, each unit consisting of one (1) share of common stock
and a warrant to purchase 0.6 share of common stock, exercisable for a period of five (5) years at a full share exercise
price of $1.50. Each unit is priced at $1.30.

 

		(c)	The Company shall deliver, at least five (5) days before conversion of the Note, a notice per the
terms set forth herein and specifying (I) the outstanding principal amount of the Loan and all accrued but unpaid Interest, (II)
the number of shares of common stock that the Holder would receive upon conversion, (III) the number of warrants that the Holder
would receive upon conversion, and (IV) the date on which such conversion would occur. In the event of a repayment, the Company
shall deliver, at least five (5) days before repayment of the Note, a notice specifying (A) the then outstanding Principal amount
of the Loan and all accrued but unpaid Interest, and (II) the date on which such repayment would occur. Holder shall surrender
the Note to the Company at the location designated in Section 6 hereof on or before the date of conversion or repayment, as the
case may be, and Holder shall receive, (A) on the effective date of conversion, if applicable, (i) a common stock certificate in
the number of shares of common stock represented by the then outstanding Principal and accrued Interest under the Note, divided
by $1.30 per share (the “Conversion Shares”), and (ii) a warrant to purchase that certain number of shares equal to
the number of Conversion Shares issued upon conversion, multiplied times 0.6 (the “Conversion Warrants”), or (B) in
the case of repayment of the Note, a check made payable to Holder in the amount of the then outstanding Principal and accrued Interest.

 

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		4.	Event of Default

 

		(a)	An "Event of Default", wherever used herein, means any one of the following events:

 

		(i)	any default in the payment of the principal of, Interest on or other charges in respect of this
Note, as and when the same shall become due and payable (whether on the Maturity Date or by acceleration or otherwise);

 

		(ii)	the occurrence of a Bankruptcy Event; or

 

		(iii)	the Company shall commit any material breach or default of any material provision of this Note
(except as set forth in Section 4(a)(i)), which is not cured within thirty (30) Business Days following written notice to the Company
from the Holder specifying in reasonable detail such breach or default.

 

		(b)	Upon and during the continuance of an Event of Default, the Interest rate shall be increased to
18% per annum, compounded monthly.

 

		5.	Covenants

 

		(a)	Financial Statements. Prior to the repayment of the Note in full, or conversion of this
Note pursuant to Section 3, the Company shall provide the Holder with (i) quarterly unaudited financial statements of the Company,
including a balance sheet, income statement and a statement of cash flows, within 45 calendar days of the end of each fiscal quarter,
and (ii) annual unaudited financial statements of the Company within 90 calendar days of the end of each fiscal year.

 

		6.	Notices

 

Any notice, demand or
request which may be permitted, required or desired to be given in connection with herewith shall be given in writing and directed
to the parties hereto as follows:

 

	If to the Company, addressed as follows:	QuantumSphere, Inc.

2905 Tech Center Dr.

Santa Ana, CA 92705
 Attention: Kevin D. Maloney
 Facsimile No.: (714) 545-6265 

	 	 	 
	If to the Holder, addressed as follows:	 
	 	 
	 	 
	 	Facsimile No.: 	 

 

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Notices shall be deemed
properly delivered and received when delivered to the primary notice party (without regard to the copied parties) (i) if personally
delivered, upon receipt or refusal to accept delivery, (ii) if sent via facsimile, upon mechanical confirmation of successful transmission
thereof generated by the sending telecopy machine, (iii) if sent by a commercial overnight courier for delivery on the next business
day, on the first business day after deposit with such courier service (or the third business day if sent to an address not in
the United States), or (iv) if sent by registered or certified mail, five Business Days after deposit thereof in the U.S. mail.
Any party may change its address for delivery of notices by properly notifying the others pursuant to this Section 6.

 

		7.	General

 

		(a)	Amendments; Waivers. No provision of this Note may be waived or amended except in a written
instrument signed, in the case of an amendment, by the Company and the Holder or, in the case of a waiver, by the party against
whom enforcement of any such waiver is sought. No waiver of any default with respect to any provision, condition or requirement
of this Note shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other
provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in
any manner impair the exercise of any such right. In the event that there is more than one Note holder, any amendments or waivers
with respect to the Notes may be made with the approval of a majority in interest of the Note holders.

 

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

 

		(c)	Successors and Assigns. This Note shall be binding upon and inure to the benefit of the
parties and their successors and permitted assigns. Neither the Company nor the Holder may assign this Note or any rights or obligations
hereunder without the prior written consent of the other party.

 

		(d)	Severability. If any provision of this Note is held to be invalid or unenforceable in any
respect, the validity and enforceability of the remaining terms and provisions of this Note shall not in any way be affected or
impaired thereby and the parties will attempt to agree upon a valid and enforceable provision that is a reasonable substitute therefor,
and upon so agreeing, shall incorporate such substitute provision in this Note.

 

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		(e)	Replacement of the Note. If any certificate or instrument evidencing this Note is mutilated,
lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation
thereof, or in lieu of and substitution therefor, a new certificate or instrument, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity, if requested. The applicants
for a new certificate or instrument under such circumstances shall also pay any reasonable third-party costs associated with the
issuance of such replacement Note.

 

		(f)	Usury. To the extent it may lawfully do so, the Company hereby agrees not to insist upon
or plead or in any manner whatsoever claim, and will resist any and all efforts to be compelled to take the benefit or advantage
of, usury laws wherever enacted, now or at any time hereafter in force, in connection with any claim, action or proceeding that
may be brought by the Holder in order to enforce any right or remedy under this Note. Notwithstanding any provision to the contrary
contained in this Note, it is expressly agreed and provided that the total liability of the Company under this Note for payments
in the nature of interest shall not exceed the maximum lawful rate authorized under applicable law (the "Maximum Rate"),
and, without limiting the foregoing, in no event shall any rate of interest or default interest, or both of them, when aggregated
with any other sums in the nature of interest that the Company may be obligated to pay under this Note exceed such Maximum Rate.
It is agreed that if the maximum contract rate of interest allowed by law and applicable to this Note is increased or decreased
by statute or any official governmental action subsequent to the date hereof, the new maximum contract rate of interest allowed
by law will be the Maximum Rate of interest applicable to this Note from the effective date forward, unless such application is
precluded by applicable law.

 

		(g)	Governing Law. All questions concerning the construction, validity, enforcement and interpretation
of this Note shall be governed by and construed and enforced in accordance with the internal laws of the State of California, without
regard to the principles of conflicts of law thereof.

 

IN WITNESS WHEREOF,
the Company has caused this Note to be duly executed by duly authorized officer as of the date first written above.

 

	 	QUANTUMSPHERE, INC.
	 	 	 
	 	 	 
	 	By: 	 
	 	 	Kevin D. Maloney
	 	 	Chief Executive Officer & President

  

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