Document:

Exhibit 4.1

	
	0000001
SPECIMEN

SEE REVERSE FOR IMPORTANT NOTICE REGARDING OWNERSHIP AND
TRANSFER RESTRICTIONS AND CERTAIN OTHER INFORMATION
COMMON STOCK SEE REVERSE FOR CERTAIN DEFINITIONS
FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, PAR VALUE $0.00001 PER SHARE, OF
MIROMATRIX MEDICAL INC.
CUSIP  60471P 10 8 INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
CHIEF FINANCIAL OFFICER CHIEF EXECUTIVE OFFICER
transferable on the books of the Corporation by the holder hereof in person or by Attorney upon surrender of this certificate properly endorsed. This certificate is not valid until
countersigned and registered by the Transfer Agent and Registrar.
WITNESS the facsimile signatures of its duly authorized officers.
DATED: 

	
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 TransferExhibit 4.5

 

THIS NOTE AND THE SECURITIES ISSUABLE UPON THE
CONVERSION HEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR UNDER
THE SECURITIES LAWS OF CERTAIN STATES. THESE SECURITIES MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED EXCEPT
AS PERMITTED UNDER THE ACT AND APPLICABLE STATE SECURITIES LAWS PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT OR AN EXEMPTION THEREFROM.
THE ISSUER OF THESE SECURITIES MAY REQUIRE AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE ISSUER THAT SUCH OFFER, SALE OR TRANSFER,
PLEDGE OR HYPOTHECATION OTHERWISE COMPLIES WITH THE ACT AND ANY APPLICABLE STATE SECURITIES LAWS.

 

MIROMATRIX MEDICAL INC.

CONVERTIBLE PROMISSORY NOTE

 

	$6,000,000.00	 	March 6, 2020

 

FOR VALUE RECEIVED, Miromatrix
Medical Inc., a Delaware corporation (the “Company”), promises to pay to Cheshire MD Holdings, LLC, a Delaware
limited liability company, or its registered assigns (“Investor”), in lawful money of the United States of America
the principal sum of Six Million Dollars ($6,000,000), or such lesser amount as shall equal the outstanding principal amount hereof, together
with interest from the date of this Convertible Promissory Note (this “Note”) on the unpaid principal balance
at a rate equal to 5.00% per annum, computed on the basis of the actual number of days elapsed and a year of 365 days (the “Interest
Rate”). Notwithstanding the foregoing, if the Note has not been converted prior to May 1, 2020, the Interest Rate shall
be increased to 7.00% on May 1, 2020 and by an additional 2.00% on the first day of each subsequent month prior to the Maturity Date starting
on June 1, 2020; provided, however, that in no event shall the Interest Rate exceed the lesser of (a) 20.00% or (b) the maximum
interest rate allowable by applicable law. All unpaid principal, together with any then unpaid and accrued interest and other amounts
payable hereunder, shall be due and payable on the earlier of (i) September 6, 2021 (the “Maturity Date”), or
(ii) when, upon the occurrence and during the continuance of an Event of Default, such amounts are declared due and payable by Investor
or made automatically due and payable, in each case, in accordance with the terms hereof.

 

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

 

1.             Payments.

 

(a)            Interest. Accrued interest on this Note shall be payable at maturity.

 

(b)           Voluntary
Prepayment. This Note may not be prepaid before the Maturity Date without Investor’s written consent.

 

(c)           Mandatory
Prepayment.

 

(i)                
In the event of a Change of Control, the outstanding principal amount of this Note, plus all accrued and unpaid interest,
in each case that has not otherwise been converted into equity securities pursuant to Sections 4(a) and 4(b), shall be due
and payable immediately prior to the closing of such Change of Control, together with a premium equal to 100% of the outstanding principal
amount to be prepaid.

 

     

     

    

 

2.             Events
of Default. The occurrence of any of the following shall constitute an “Event of Default” under this
Note and the other Transaction Documents:

 

(a)           Failure
to Issue. the Company fails to issue to Investor any Subsequent Warrant within seven (7) business days of the date such Subsequent
Warrant is to be issued under the Purchase Agreement;

 

(b)           Failure
to Pay. The Company shall fail to pay (i) when due any principal payment on the due date hereunder or (ii) when due any interest
payment or other payment required under the terms of this Note;

 

(c)           Breaches
of Covenants. The Company shall fail to observe or perform any other covenant, obligation, condition or agreement contained in this
Note or the other Transaction Documents (other than those specified in Sections 2(a) and 2(b)) and such failure shall continue
for three (3) business days after the Company’s receipt of written notice to the Company of such failure;

 

(d)           Representations
and Warranties. Any representation, warranty, certificate, or other statement (financial or otherwise) made or furnished by or on
behalf of the Company to Investor in writing in connection with this Note or any of the other Transaction Documents, or as an inducement
to Investor to enter into this Note and the other Transaction Documents, shall be false, incorrect, incomplete or misleading in any material
respect when made or furnished;

 

(e)           Other
Payment Obligations. Defaults shall exist under any agreements of the Company with any third party or parties which consists of the
failure to pay any indebtedness for borrowed money at maturity or which results in a right by such third party or parties, whether or
not exercised, to accelerate the maturity of such indebtedness for borrowed money of the Company, in each case, in an aggregate amount
in excess of One Hundred Thousand Dollars ($100,000)

 

(f)            Voluntary
Bankruptcy or Insolvency Proceedings. The Company shall (i) apply for or consent to the appointment of a receiver, trustee, liquidator
or custodian of itself or of all or a substantial part of its property, (ii) admit in writing its inability to pay its debts generally
as they mature, (iii) make a general assignment for the benefit of its or any of its creditors, (iv) be dissolved or liquidated, (v)
commence a voluntary case or other proceeding seeking liquidation, reorganization or other relief with respect to itself or its debts
under any bankruptcy, insolvency or other similar law now or hereafter in effect or consent to any such relief or to the appointment
of or taking possession of its property by any official in an involuntary case or other proceeding commenced against it, or (vi) take
any action for the purpose of effecting any of the foregoing; or

 

(g)           Involuntary
Bankruptcy or Insolvency Proceedings. Proceedings for the appointment of a receiver, trustee, liquidator or custodian of the Company,
or of all or a substantial part of the property thereof, or an involuntary case or other proceedings seeking liquidation, reorganization
or other relief with respect to the Company or any of its subsidiaries, if any, or the debts thereof under any bankruptcy, insolvency
or other similar law now or hereafter in effect shall be commenced and an order for relief entered or such proceeding shall not be dismissed
or discharged within 45 days of commencement.

 

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3.             Rights
of Investor upon Default. Upon the occurrence of any Event of Default (other than an Event of Default described in Section
2(f) or 2(g)) and at any time thereafter during the continuance of such Event of Default, Investor may, by written notice
to the Company, declare all outstanding Obligations payable by the Company hereunder to be immediately due and payable without presentment,
demand, protest or any other notice of any kind, all of which are hereby expressly waived, anything contained herein or in the other
Transaction Documents to the contrary notwithstanding. Upon the occurrence of any Event of Default described in Section 2(f) or
2(g), immediately and without notice, all outstanding Obligations payable by the Company hereunder shall automatically become
immediately due and payable, without presentment, demand, protest or any other notice of any kind, all of which are hereby expressly
waived, anything contained herein or in the other Transaction Documents to the contrary notwithstanding. In addition to the foregoing
remedies, upon the occurrence and during the continuance of any Event of Default, Investor may exercise any other right, power or remedy
granted to it by the Transaction Documents or otherwise permitted to it by law, either by suit in equity or by action at law, or both.

 

4.             Conversion.

 

(a)           Automatic
Conversion. If a Qualified Financing occurs on or prior to the Maturity Date, then the outstanding principal amount of this Note
and all accrued and unpaid interest on this Note shall automatically convert into fully paid and nonassessable shares of the preferred
stock issued in such Qualified Financing at the Conversion Price (the “Qualified Financing Shares”).

 

(b)          Voluntary Conversion if a Non-Qualified Financing Occurs. If a transaction or series of transactions, pursuant to which
the Company issues and sells shares of its preferred stock, that does not constitute a Qualified Financing (a “Non-Qualified
Financing”) occurs on or prior to the Maturity Date and prior to the automatic conversion of this Note in accordance with
Section 4(a), then the outstanding principal amount of this Note and all accrued and unpaid interest on this Note shall be convertible
at the option of Investor into fully paid and nonassessable shares of the Company’s preferred stock issued in the Non-Qualified
Financing at a price per share equal to the lowest price per share paid by the other purchasers of the preferred stock sold in the Non-Qualified
Financing (subject to appropriate adjustment from time to time for any stock dividend, stock split, combination of shares, reorganization,
recapitalization, reclassification or other similar event) (the “Voluntary Conversion Shares”).

 

(c)           Conversion Procedure.

 

(i)                
Automatic Conversion Pursuant to Section 4(a). If this Note is to be automatically converted, written notice shall be delivered
to Investor at the address last shown on the records of the Company for Investor or given by Investor to the Company for the purpose of
notice, notifying Investor of the conversion to be effected, specifying the Conversion Price, the principal amount of the Note to be converted,
together with all accrued and unpaid interest, the securities to be issued on conversion, the date on which such conversion is expected
to occur and calling upon such Investor to surrender to the Company, in the manner and at the place designated, the Note. Upon such conversion
of this Note, Investor hereby agrees to execute and deliver to the Company all transaction documents entered into by other purchasers
participating in the Qualified Financing, including any purchase agreement, investor rights agreement and other ancillary agreements,
as applicable, with customary representations and warranties and transfer restrictions (including, without limitation, a 180-day lock-up
agreement in connection with an Initial Public Offering). Investor also agrees to deliver the original of this Note (or a notice to the
effect that the original Note has been lost, stolen or destroyed and an agreement acceptable to the Company whereby the holder agrees
to indemnify the Company from any loss incurred by it in connection with this Note) at the closing of the Qualified Financing for cancellation;
provided, however, that upon the closing of the Qualified Financing, this Note shall be deemed converted and of no further force
and effect, whether or not it is delivered for cancellation as set forth in this sentence. The Company shall, as soon as practicable thereafter,
issue and deliver to such Investor a certificate or certificates (or a notice of issuance of uncertificated shares, if applicable) for
the number of shares to which Investor shall be entitled upon such conversion, including a check payable to Investor for any cash amounts
payable as described in Section 4(c)(iii). Any conversion of this Note pursuant to Section 4(a) shall be deemed to have
been made immediately prior to the closing of the Qualified Financing and on and after such date the Persons entitled to receive the shares
issuable upon such conversion shall be treated for all purposes as the record holder of such shares.

 

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(ii)               
Conversion Pursuant to Section 4(b). Before Investor shall be entitled to convert this Note into the applicable shares of
the Company’s stock in accordance with Section 4(b), it shall surrender this Note (or a notice to the effect that the original
Note has been lost, stolen or destroyed and an agreement acceptable to the Company whereby the holder agrees to indemnify the Company
from any loss incurred by it in connection with this Note) and give written notice to the Company at its principal corporate office of
the election to convert the same pursuant to Section 4(b), and shall state therein the amount of the unpaid principal amount of
this Note to be converted. Upon such conversion of this Note, Investor hereby agrees to execute and deliver to the Company all transaction
documents entered into by other purchasers of the relevant securities (as may be amended), including any purchase agreement, investor
rights agreement and other ancillary agreements, as applicable, with customary representations and warranties and transfer restrictions
(including, without limitation, a 180-day lock-up agreement in connection with an Initial Public Offering). The Company shall, as soon
as practicable thereafter, issue and deliver to such Investor a certificate or certificates (or a notice of issuance of uncertificated
shares, if applicable) for the number of shares to which Investor shall be entitled upon such conversion, including a check payable to
Investor for any cash amounts payable as described in Section 4(c)(iii). Any conversion of this Note pursuant to Section 4(b)
shall be deemed to have been made upon the satisfaction of all of the conditions set forth in this Section 4(c)(ii) and on
and after such date the Persons entitled to receive the shares issuable upon such conversion shall be treated for all purposes as the
record holder of such shares.

 

(iii)              
Fractional Shares; Interest; Effect of Conversion. No fractional shares shall
be issued upon conversion of this Note. In lieu of the Company issuing any fractional shares to the Investor upon the conversion of this
Note, the Company shall pay to Investor an amount equal to the product obtained by multiplying the applicable conversion price by the
fraction of a share not issued pursuant to the previous sentence. In addition, to the extent not converted into shares of capital stock,
the Company shall pay to Investor any interest accrued on the amount converted and on the amount to be paid by the Company pursuant to
the previous sentence. Upon conversion of this Note in full and the payment of the amounts specified in this paragraph, the Company shall
be forever released from all its obligations and liabilities under this Note and this Note shall be deemed of no further force or effect,
whether or not the original of this Note has been delivered to the Company for cancellation.

 

(d)           Notices
of Record Date. In the event of:

 

(i)                
Any taking by the Company of a record of the holders of any class of securities of the Company for the purpose of determining the
holders thereof who are entitled to receive any dividend or other distribution or any right to subscribe for, purchase or otherwise acquire
any shares of stock of any class or any other securities or property, or to receive any other right;

 

(ii)               
Any capital reorganization of the Company, any reclassification or recapitalization of the capital stock of the Company or any
transfer of all or substantially all of the assets of the Company to any other Person or any consolidation or merger involving the Company;

 

(iii)              
Any voluntary or involuntary dissolution, liquidation or winding-up of the Company; or

 

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(iv)              Any
transaction or series of transactions, pursuant to which the Company issues and sells shares of its preferred stock, the
Company will mail to Investor at least ten (10) days prior to the earliest date specified therein, a notice specifying (A) the date
on which any such record is to be taken for the purpose of such dividend, distribution or right and the amount and character of such
dividend, distribution or right; or (B) the date on which any such reorganization, reclassification, recapitalization, transfer,
consolidation, merger, dissolution, liquidation or winding-up is expected to become effective and the record date for determining
stockholders entitled to vote thereon.

 

5.             Definitions.
As used in this Note, the following capitalized terms have the following meanings:

 

“Change of Control”
shall mean (i) any “person” or “group” (within the meaning of Section 13(d) and 14(d) of the Securities Exchange
Act of 1934, as amended), becomes the “beneficial owner” (as defined in Rule 13d-3 under the Securities Exchange Act of 1934,
as amended), directly or indirectly, of more than 50% of the outstanding voting securities of the Company having the right to vote for
the election of members of the Board of Directors, (ii) any reorganization, merger or consolidation of the Company, other than a transaction
or series of related transactions in which the holders of the voting securities of the Company outstanding immediately prior to such transaction
or series of related transactions retain, immediately after such transaction or series of related transactions, at least a majority of
the total voting power represented by the outstanding voting securities of the Company or such other surviving or resulting entity or
(iii) a sale, lease or other disposition of all or substantially all of the assets of the Company.

 

“Conversion Price”
shall mean a price per share equal to the lowest price per share paid by the other purchasers of the preferred stock sold in the Qualified
Financing.

 

“Event of Default”
has the meaning given in Section 2 hereof.

 

“Initial Public
Offering” shall mean the closing of the Company’s first firm commitment underwritten initial public offering of the
Company’s common stock pursuant to a registration statement filed under the Securities Act.

 

“Investor”
shall mean the Person specified in the introductory paragraph of this Note or any Person who shall at the time be the registered holder
of this Note.

 

“Note”
shall mean the convertible promissory notes issued pursuant to the Purchase Agreement.

 

“Obligations”
shall mean and include all loans, advances, debts, liabilities and obligations, howsoever arising, owed by the Company to Investor of
every kind and description, now existing or hereafter arising under or pursuant to the terms of this Note and the other Transaction Documents,
including, all interest, fees, charges, expenses, attorneys’ fees and costs and accountants’ fees and costs chargeable to
and payable by the Company hereunder and thereunder, in each case, whether direct or indirect, absolute or contingent, due or to become
due, and whether or not arising after the commencement of a proceeding under Title 11 of the United States Code (11 U. S. C. Section 101
et seq.), as amended from time to time (including post-petition interest) and whether or not allowed or allowable as a claim in
any such proceeding. Notwithstanding the foregoing, the term “Obligations” shall not include any obligations of Company under
or with respect to any warrants to purchase Company’s capital stock.

 

“Person”
shall mean and include an individual, a partnership, a corporation (including a business trust), a joint stock company, a limited liability
company, an unincorporated association, a joint venture or other entity or a governmental authority.

 

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“Purchase Agreement”
shall mean the Note and Warrant Purchase Agreement, dated as of the date hereof (as amended, modified or supplemented), by and between
the Company and Investors.

 

“Qualified Financing”
is a transaction or series of transactions pursuant to which the Company issues and sells shares of its preferred stock for aggregate
gross proceeds of at least $34,000,000 (excluding all proceeds from the incurrence of indebtedness that is converted into such preferred
stock, or otherwise cancelled in consideration for the issuance of such preferred stock) with the principal purpose of raising capital.

 

“Securities Act”
shall mean the Securities Act of 1933, as amended.

 

“Transaction Documents”
shall mean this Note, each of any other Notes, the Purchase Agreement and the Warrants.

 

“Warrants”
shall mean the warrants issued to Investor under the Purchase Agreement.

 

6.             Miscellaneous.

 

(a)            Successors
and Assigns; Transfer of this Note or Securities Issuable on Conversion Hereof; No Transfers to Bad Actors; Notice of Bad Actor Status.

 

(i)                
Subject to the restrictions on transfer described in this Section 6(a), the rights and obligations of the Company and Investor
shall be binding upon and benefit the successors, assigns, heirs, administrators and transferees of the parties.

 

(ii)               
With respect to any offer, sale or other disposition of this Note or securities into which such Note may be converted, Investor
will give written notice to the Company prior thereto, describing briefly the manner thereof.

 

(iii)              
Subject to Section 6(a)(ii), transfers of this Note shall be registered upon registration books maintained for such purpose
by or on behalf of the Company as provided in the Purchase Agreement. Prior to presentation of this Note for registration of transfer,
the Company shall treat the registered holder hereof as the owner and holder of this Note for the purpose of receiving all payments of
principal and interest hereon and for all other purposes whatsoever, whether or not this Note shall be overdue and the Company shall not
be affected by notice to the contrary.

 

(iv)             
Neither this Note nor any of the rights, interests or obligations hereunder may be assigned, by operation of law or otherwise,
in whole or in part, by the Company without the prior written consent of Investor.

 

(b)           Waiver
and Amendment. Any provision of this Note may be amended, waived or modified upon the written consent of the Company and Investor.

 

(c)            Notices.
All notices and other communications required or permitted hereunder shall be in writing and shall be mailed by registered or certified
mail, postage prepaid, sent by facsimile or electronic mail (if to Investor) or otherwise delivered by hand, messenger or courier service
addressed:

 

(i)                
if to Investor, to the recipients’ addresses or electronic mail addresses shown on the signature page to the Purchase Agreement,
as may be updated in accordance with the provisions hereof (provided that to be effective, notice by electronic mail must be followed
by notice by overnight delivery sent no later than 1 business day following the delivery of such electronic mail notice); or

 

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(ii)                
if to the Company, to the attention of the Chief Executive Officer or Chief Financial Officer of the Company at 10399 West 70th
Street, Eden Prairie, MN 55344, or at such other current address as the Company shall have furnished to Investor.

 

Each such notice or other
communication shall for all purposes of this Note be treated as effective or having been given (i) if delivered by hand, messenger or
courier service, when delivered (or if sent via a nationally-recognized overnight courier service, freight prepaid, specifying next-business-day
delivery, one business day after deposit with the courier), or (ii) if sent via mail, at the earlier of its receipt or five days after
the same has been deposited in a regularly-maintained receptacle for the deposit of the United States mail, addressed and mailed as aforesaid,
or (iii) if sent via facsimile, upon confirmation of facsimile transfer or, if sent via electronic mail, upon confirmation of delivery
when directed to the relevant electronic mail address, if sent during normal business hours of the recipient, or if not sent during normal
business hours of the recipient, then on the recipient’s next business day (subject to the additional requirements for electronic
mail notice sent to Investor set forth in Section 6(c)(i)). In the event of any conflict between the Company’s books and records
and this Note or any notice delivered hereunder, the Company’s books and records will control absent fraud or error.

 

(d)           Payment.
Unless converted into the Company’s equity securities pursuant to the terms hereof, payment shall be made in lawful tender
of the United States.

 

(e)           Usury.
In the event any interest is paid on this Note which is deemed to be in excess of the then legal maximum rate, then that portion
of the interest payment representing an amount in excess of the then legal maximum rate shall be deemed a payment of principal and applied
against the principal of this Note.

 

(f)            Expenses;
Waivers. If action is instituted to collect this Note, the Company promises to pay all costs and expenses, including, without limitation,
reasonable attorneys’ fees and costs, incurred in connection with such action. The Company hereby waives notice of default, presentment
or demand for payment, protest or notice of nonpayment or dishonor and all other notices or demands relative to this instrument.

 

(g)           Governing
Law. This Note and all actions arising out of or in connection with this Note shall be governed by and construed in accordance with
the laws of the State of Delaware, without regard to the conflicts of law provisions of the State of Delaware, or of any other state.
Notwithstanding any provision of this Note to the contrary, this Note shall be (to the extent necessary to satisfy the requirements of
Section 22062(b)(3)(D) of the California Financial Code) subject to the implied covenant of good faith and fair dealing arising under
Section 1655 of the California Civil Code.

 

(h)           Jurisdiction and Venue. Each of Investor and the Company hereby submits and consents irrevocably to the exclusive jurisdiction
of the courts of the State of Delaware and the United States District Court for the District of Delaware for the interpretation and enforcement
of the provisions of this Note. Each of Investor and the Company also agrees that the jurisdiction over such persons and the subject matter
of such dispute shall be effected by any manner as may be lawful, and that service in such manner shall constitute valid and sufficient
service of process.

 

(signature page follows)

 

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The Company has caused this
Note to be issued as of the date first written above.

 

		MIROMATRIX MEDICAL INC.,
	 	a Delaware corporation
	 	 	 
	 	By:	/s/ Jeffrey Ross
	 	Name: Jeffrey Ross
	 	Title: Chief Executive Officer

 

(Signature Page for
Convertible Promissory Note)

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