Document:

Exhibit 10.5

 

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.

 

TENON MEDICAL, INC.

 

AMENDED AND RESTATED 2019 CONVERTIBLE
PROMISSORY NOTE

 

	$70,000	April 30, 2021

 

This Amended and
Restated Convertible Promissory Note (this “Note”) is entered into by and between Tenon Medical, Inc., a Delaware
Corporation (the “Company”) and Kal Mentak (“Investor”).

 

WHEREAS,
the Investor purchase from the Company a Convertible Promissory Note, dated October 12, 2019, in the principal amount of $70,000
(the “Existing Note”).

 

WHEREAS,
Section 6(b) of the Existing Note provides that the Existing Note may be amended, waived or modified upon the written consent of
the Company and a Majority in Interest of Investors.

 

WHEREAS,
the Company and Investor desire to amend and restated the Existing Note in its entirety, as set forth herein.

 

NOW, THEREFORE, in consideration
of the mutual covenants, agreements and for other good and valuable consideration, the receipt and adequacy of which is hereby
acknowledged, each of the Company and the Investor agree and the Existing Note shall be amended and restated and replaced in its
entirety by this Note, and the parties to this Note further agree as follows:

 

FOR VALUE RECEIVED,
the Company promises to pay to Investor, or its registered assigns, in lawful money of the United States of America the principal
sum of $70,000 (the “Principal Amount”), or such lesser amount as shall equal the outstanding principal amount
hereof, together with simple interest from October 12, 2019 on the unpaid principal balance at a rate equal to Eight Percent (8.0%)
per annum, computed on the basis of the actual number of days elapsed and a year of 365 days. 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) the 12
month anniversary of this Note (the “Maturity Date”) following written demand by Investor, 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, without the written consent of a Majority in Interest of Investors.

 

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

 

(a)       Failure
to Pay. The Company shall fail to pay (i) when due any principal payment on the due date hereunder or (ii) any interest payment
or other payment required under the terms of this Note or any other Transaction Document on the date due and such payment shall
not have been made within twenty (20)

Business Days of the Company’s
receipt of written notice to the Company of such failure to pay; or

 

(b)       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

 

(c)       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.

 

3.       Rights
of Investor upon Default. Upon the occurrence of any Event of Default (other than an Event of Default described in Sections
2(b) or 2(c)) and at any time thereafter during the continuance of such Event of Default, Investor may, with the written
consent of a Majority in Interest of Investors, 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 to the contrary notwithstanding. Upon the occurrence of any Event
of Default described in Sections 2(b) and 2(c), 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 to the contrary notwithstanding. In addition
to the foregoing remedies, upon the occurrence and during the continuance of any Event of Default, Investor may, with the written
consent of a Majority in Interest of Investors, exercise any other right power or remedy granted to it by this Note or otherwise
permitted to it by law, either by suit in equity or by action at law, or both.

 

		4.	Conversion.

 

(a)       Automatic
Conversion upon an Initial Public Offering. If an Initial Public Offering occurs prior to the payment in full of the principal
amount of this Note, then the outstanding principal amount of this Note and all accrued and unpaid interest on this Note shall
automatically convert immediately prior to such Initial Public Offering, into fully paid and nonassessable shares of the Company’s
common stock at the IPO Conversion Price. The Company shall provide the Investors written notice of any potential Initial Public
Offering at least ten (10) business days prior to the consummation of such Initial Public Offering.

 

    	 	-2-	 

     

    

 

(b)       Automatic
Conversion upon a Qualified Financing. 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 capital stock issued and sold in such Qualified Financing at the Qualified Financing Conversion Price,
with any fractional shares rounded down.

 

		(c)	Conversion Procedure.

 

(i)       Conversion
Pursuant to Section 4(a). If this Note is to be automatically converted in accordance with Section 4(a), 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 IPO Conversion Price, the
principal amount of the Note to be converted, together with all accrued and unpaid interest, 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 a lock-up agreement in connection
with an Initial Public Offering in substantially the same form of lock-up agreement and other related agreements necessary to consummate
the 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 Initial Public Offering for cancellation; provided,
however, that upon the closing of the Initial Public Offering, 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 for the number of shares to which Investor shall be
entitled upon such conversion. Any conversion of this Note pursuant to Section 4(a) shall be deemed to have been made immediately
prior to the closing of the Initial Public Offering, and if applicable 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.

 

(ii)       Conversion
Pursuant to Section 4(b). If this Note is to be automatically converted in accordance with Section 4(b), 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 Qualified Financing Conversion
Price, the principal amount of the Note to be converted, together with all accrued and unpaid interest, 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 a purchase agreement, an investor rights agreement
and other ancillary agreements, 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
for the number of shares to which Investor shall be entitled upon such conversion. Any conversion of this Note pursuant to Section
4(b) 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.

 

    	 	-3-	 

     

    

 

(iii)       Fractional
Shares; Effect of Conversion. No fractional shares shall be issued upon conversion of this Note. Upon conversion of
this Note in full, 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.

 

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 (other than in connection with a
financing of the Company with the principal purposes of raising capital), (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 (other than in connection with a financing of the Company with the principal
purposes of raising capital) or (iii) a sale, lease or other disposition of all or substantially all of the assets of the Company.

 

“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.

 

“Investors” shall
mean the investors that have purchased Notes.

 

“IPO Conversion
Price” shall mean a price per share equal to 70% of the price per share (prior to underwriting discounts and commissions)
of the Company’s common stock sold in the Initial Public Offering

 

“Majority in Interest”
shall mean Investors holding at least a majority of the aggregate outstanding principal amount of the Notes.

 

“Notes” shall mean
this Note and the other 2019 convertible promissory notes executed and delivered on or about the date hereof.

 

    	 	-4-	 

     

    

 

“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, 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.

 

“Qualified
Financing” is a transaction or series of transactions pursuant to which the Company issues and sells shares of its capital
stock for aggregate gross proceeds of at least Five Million Dollars ($5,000,000) (excluding all proceeds from the incurrence of
indebtedness that is converted into such capital stock, or otherwise cancelled in consideration for the issuance of such capital
stock) with the principal purpose of raising capital.

 

“Qualified Financing Conversion
Price” shall mean a price per share equal to $1.9565.

 

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

 

		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, together with a written opinion of Investor’s
counsel, or other evidence if reasonably satisfactory to the Company, to the effect that such offer, sale or other distribution
may be effected without registration or qualification (under any federal or state law then in effect). Upon receiving such written
notice and reasonably satisfactory opinion, if so requested, or other evidence, the Company, as promptly as practicable, shall
notify Investor that Investor may sell or otherwise dispose of this Note or such securities, all in accordance with the terms of
the notice delivered to the Company. If a determination has been made pursuant to this Section 6(a) that the opinion of
counsel for Investor, or other evidence, is not reasonably satisfactory to the Company, the Company shall so notify Investor promptly
after such determination has been made. Each Note thus transferred and each certificate representing the securities thus transferred
shall bear a legend as to the applicable restrictions on transferability in order to ensure compliance with the Securities Act,
unless in the opinion of counsel for the Company such legend is not required in order to ensure compliance with the Securities
Act. The Company may issue stop transfer instructions to its transfer agent in connection with such restrictions. Subject to the
foregoing, transfers of this Note shall be registered upon registration books maintained for such purpose by or on behalf of the
Company. 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.

 

    	 	-5-	 

     

    

 

(iii)       Investor
agrees not to sell, assign, transfer, pledge or otherwise dispose of any securities of the Company, or any beneficial interest
therein, to any person (other than the Company) unless and until the proposed transferee confirms to the reasonable satisfaction
of the Company that neither the proposed transferee nor any of its directors, executive officers, other officers that may serve
as a director or officer of any company in which it invests, general partners or managing members nor any person that would be
deemed a beneficial owner of those securities (in accordance with Rule 506(d) of the Securities Act) is subject to any of the “bad
actor” disqualifications described in Rule 506(d)(1)(i) through (viii) under the Securities Act, except as set forth in Rule
506(d)(2) or (d)(3) under the Securities Act and disclosed, reasonably in advance of the transfer, in writing in reasonable detail
to the Company. Investor will promptly notify the Company in writing if Investor or, to Investor’s knowledge, any person
specified in Rule 506(d)(1) under the Securities Act becomes subject to any of the “bad actor” disqualifications described
in Rule 506(d)(1)(i) through (viii) under the Securities Act.

 

(b)       Waiver
and Amendment. Any provision of this Note may be amended, waived or modified upon the written consent of the Company and a
Majority in Interest of Investors; provided, however, that no such amendment, waiver or consent shall: (i) reduce the principal
amount of this Note without Investors’ written consent or (ii) reduce the rate of interest of this Note without Investor’s
written consent.

 

(c)Notices.
All notices, requests, demands, consents, instructions or other communications required or permitted hereunder shall in writing
and faxed, mailed or delivered to each party as follows: (i) if to Investor, at Investor’s address or facsimile number set
forth on the signature page hereto, or at such other address as Investor shall have furnished the Company in writing, or (ii) if
to the Company, Attn: President,, or at such other address as the Company shall have furnished to the Investor in writing.
All such notices and communications will be deemed effectively given the earlier of (i) when received, (ii) when delivered personally,
(iii) one business day after being delivered by facsimile (with receipt of appropriate confirmation), (iv) one business day after
being deposited with an overnight courier service of recognized standing or (v) four days after being deposited in the U.S. mail,
first class with postage prepaid.

 

(d)       Pari
Passu Notes. Investor acknowledges and agrees that the payment of all or any portion of the outstanding principal amount of
this Note and all interest hereon shall be pari passu in right of payment and in all other respects to the other Notes.
In the event Investor receives payments in excess of its pro rata share of the Company’s payments to the Investors of all
of the Notes, then Investor shall hold in trust all such excess payments for the benefit of the holders of the other Notes and
shall pay such amounts held in trust to such other holders upon demand by such holders.

 

(e)       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.

 

(f)       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.

 

(g)       Waivers.
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.

 

    	 	-6-	 

     

    

 

(h)       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 California, without regard to the conflicts of law provisions of the State of California, or of any
other state.

 

(i)       Waiver
of Jury Trial; Judicial Reference. By acceptance of this Note, Investor hereby agrees and the Company hereby agrees to waive
their respective rights to a jury trial of any claim or cause of action based upon or arising out of this Note. If the jury waiver
set forth in this paragraph is not enforceable, then any claim or cause of action arising out of or relating to this Note or any
of the transactions contemplated herein shall be settled by judicial reference pursuant to Code of Civil Procedure Section 638
et seq. before a referee sitting without a jury, such referee to be mutually acceptable to the parties or, if no agreement is reached,
by a referee appointed by the Presiding Judge of the California Superior Court for Santa Clara County. This paragraph shall not
restrict a party from exercising remedies under the Uniform Commercial Code or from exercising pre-judgment remedies under applicable
law.

 

(Signature Page Follows)

 

    	 	-7-	 

     

    

  

In witness whereof, this Note is executed as of the date
first written above.

 

	 	COMPANY
	 	 
	 	Tenon Medical, Inc.
	 	a Delaware corporation
	 	 	 
	 	By:	/s/ Kal Mentak
	 	 	 
	 	Name:	Kal Mentak
	 	 	 
	 	Title:	CEO

 

ACCEPTED AND AGREED TO:

 

INVESTOR

 

LINCE CONSULTING, LLC

a California Limited Liability Company

 

	By:	/s/ Kal Mentak	 
	 	 	 
	Name:	Kal Mentak	 
	 	 	 
	Title:	CEO	 

 

	Address:	 	 
	 	 	 
	2110 omega road suite F	 	 
	 	 	 
	san ramon ca 94583	 	 
	 	 	 
	Email:	 	 
	kmentak@tctig.com	 	 

 

[Signature Page to Amended and Restated
2019 Convertible Promissory Note]Exhibit 10.6

 

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.

 

TENON MEDICAL, INC.

 

AMENDED AND RESTATED CONVERTIBLE PROMISSORY
NOTE

 

	$200,000.00	May 3, 2021

 

This Amended and Restated
Convertible Promissory Note (this “Note”) is entered into by and between Tenon Medical, Inc., a Delaware Corporation
(the “Company”) and Paul Orofino (“Investor”).

 

WHEREAS, the
Investor purchase from the Company a Convertible Promissory Note, dated November 20, 2020, in the principal amount of $200,000
(the “Existing Note”).

 

WHEREAS, Section
6(b) of the Existing Note provides that the Existing Note may amended, waived or modified upon the written consent of the Company
and a Majority in Interest of Investors.

 

WHEREAS, the
Company and Investor desire to amend and restated the Existing Note in its entirety, as set forth herein.

 

NOW, THEREFORE, in consideration
of the mutual covenants, agreements and for other good and valuable consideration, the receipt and adequacy of which is hereby
acknowledged, each of the Company and the Investor agree and the Existing Note shall be amended and restated and replaced in its
entirety by this Note, and the parties to this Note further agree as follows:

 

FOR VALUE RECEIVED, the Company promises
to pay to Investor or its registered assigns, in lawful money of the United States of America the principal sum of Two Hundred
Thousand Dollars ($200,000.00), or such lesser amount as shall equal the outstanding principal amount hereof, together with interest
from November 20, 2020 on the unpaid principal balance at a rate equal to eight percent (8%) per annum, computed on the basis of
the actual number of days elapsed and a year of 365 days. 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) the twelve (12) month anniversary of this Note
(the “Maturity Date”) following written demand by a Majority in Interest of the Investors, 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. This Note is one of a series of similar convertible
promissory notes (collectively, the “Notes”), each executed and delivered pursuant to a note subscription agreement
in a form substantially similar to the Note Subscription Agreement pursuant to which this Note was issued under.

 

    	 		 

     

    

 

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, without the written consent of a Majority in Interest of Investors.

 

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 Pay. The Company shall fail to pay (i) when due any principal payment on the due date hereunder or (ii) any interest payment
or other payment required under the terms of this Note or any other Transaction Document on the date due and such payment shall
not have been made within twenty (20) Business Days of the Company’s receipt of written notice to the Company of such failure
to pay; or

 

(b)         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

 

(c)         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.

 

3.           Rights
of Investor upon Default. Upon the occurrence of any Event of Default (other than an Event of Default described in Sections
2(b) or 2(c)) and at any time thereafter during the continuance of such Event of Default, Investor may, with the written
consent of a Majority in Interest of Investors, 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 Sections 2(b) and 2(c), 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, with the written consent of a Majority in Interest of Investors, 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.

 

    	 	-2-	 

     

    

 

4.            Conversion.

 

(a)          Automatic
Conversion upon an Initial Public Offering. If an Initial Public Offering occurs prior to the payment in full of the principal
amount of this Note, then the outstanding principal amount of this Note and all accrued and unpaid interest on this Note shall
automatically convert immediately prior to such Initial Public Offering, into fully paid and nonassessable shares of the Company’s
common stock at the IPO Conversion Price. The Company shall provide the Investors written notice of any potential Initial Public
Offering at least ten (10) business days prior to the consummation of such Initial Public Offering.

 

(b)          Automatic
Conversion upon a Qualified Financing. 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 capital stock issued and sold in such Qualified Financing at the Qualified Financing Conversion Price,
with any fractional shares rounded down.

 

(c)          Conversion
Procedure.

 

(i)       Conversion
Pursuant to Section 4(a). If this Note is to be automatically converted in accordance
with Section 4(a), 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 IPO Conversion Price, the principal amount of the Note to be converted, together with all accrued and unpaid interest,
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 a lock-up agreement in connection with an Initial Public Offering in substantially the same form of lock-up agreement and
other related agreements necessary to consummate the 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 Initial Public Offering for cancellation; provided, however, that upon the closing of the Initial Public Offering, 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
for the number of shares to which Investor shall be entitled upon such conversion. Any conversion of this Note pursuant to Section
4(a) shall be deemed to have been made immediately prior to the closing of the Initial Public Offering, and if applicable 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.

 

(ii)       Conversion
Pursuant to Section 4(b). If this Note is to be automatically converted in accordance with Section 4(b), 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 Qualified Financing Conversion
Price, the principal amount of the Note to be converted, together with all accrued and unpaid interest, 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 a purchase agreement, an investor rights agreement
and other ancillary agreements, 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
for the number of shares to which Investor shall be entitled upon such conversion. Any conversion of this Note pursuant to Section
4(b) 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.

 

    	 	-3-	 

     

    

 

(iii)       Fractional
Shares; Effect of Conversion. No fractional shares shall be issued upon conversion
of this Note. Upon conversion of this Note in full, 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.

 

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.

 

“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.

 

“Investors”
shall mean the investors that have purchased Notes.

 

“IPO Conversion
Price” shall mean a price per share equal to 70% of the price per share (prior to underwriting discounts and commissions)
of the Company’s common stock sold in the Initial Public Offering

 

“Majority in
Interest of Investors” shall mean Investors holding more than 50% of the aggregate outstanding principal amount of the
Notes.

 

“Note Subscription
Agreement” and “Note Subscription Agreements” shall mean the Note Subscription Agreement (the “Note
Subscription Agreement”) pursuant to which this Note was issued under, by and between the Company and Investor, together
with all other Note Subscription Agreements (the “Note Subscription Agreements”) in a form substantially similar
to the Note Subscription Agreement, each by and between the Company and the investor set forth on the signature pages thereto.

 

“Notes”
shall mean the convertible promissory notes issued pursuant to the Note Subscription

Agreements.

 

    	 	-4-	 

     

    

 

“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.

 

“Qualified Financing”
is a transaction or series of transactions pursuant to which the Company issues and sells shares of its capital stock for aggregate
gross proceeds of at least $5,000,000 (excluding all proceeds from the incurrence of indebtedness that is converted into such capital
stock, or otherwise cancelled in consideration for the issuance of such capital stock) with the principal purpose of raising capital.

 

“Qualified Financing
Conversion Price” shall mean a price per share equal to seventy percent (70%) of the price per share paid by the other
cash purchasers of the capital stock sold in the Qualified Financing.

 

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

 

“Transaction
Documents” shall mean this Note, each of the other Notes, the Note Subscription Agreement pursuant to which this Note
was issued under, and all other Note Subscription Agreements.

 

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, together with a written opinion of Investor’s
counsel, or other evidence if reasonably satisfactory to the Company, to the effect that such offer, sale or other distribution
may be effected without registration or qualification (under any federal or state law then in effect). Upon receiving such written
notice and reasonably satisfactory opinion, if so requested, or other evidence, the Company, as promptly as practicable, shall
notify Investor that Investor may sell or otherwise dispose of this Note or such securities, all in accordance with the terms of
the notice delivered to the Company. If a determination has been made pursuant to this Section 6(a) that the opinion of
counsel for Investor, or other evidence, is not reasonably satisfactory to the Company, the Company shall so notify Investor promptly
after such determination has been made. Each Note thus transferred and each certificate representing the securities thus transferred
shall bear a legend as to the applicable restrictions on transferability in order to ensure compliance with the Securities Act,
unless in the opinion of counsel for the Company such legend is not required in order to ensure compliance with the Securities
Act. The Company may issue stop transfer instructions to its transfer agent in connection with such restrictions. Subject to the
foregoing, 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 Note Subscription 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.

 

    	 	-5-	 

     

    

 

(iii)       Investor
agrees not to sell, assign, transfer, pledge or otherwise dispose of any securities of the Company, or any beneficial interest
therein, to any person (other than the Company) unless and until the proposed transferee confirms to the reasonable satisfaction
of the Company that neither the proposed transferee nor any of its directors, executive officers, other officers that may serve
as a director or officer of any company in which it invests, general partners or managing members nor any person that would be
deemed a beneficial owner of those securities (in accordance with Rule 506(d) of the Securities Act) is subject to any of the “bad
actor” disqualifications described in Rule 506(d)(1)(i) through (viii) under the Securities Act, except as set forth in Rule
506(d)(2) or (d)(3) under the Securities Act and disclosed, reasonably in advance of the transfer, in writing in reasonable detail
to the Company. Investor will promptly notify the Company in writing if Investor or, to Investor’s knowledge, any person
specified in Rule 506(d)(1) under the Securities Act becomes subject to any of the “bad actor” disqualifications described
in Rule 506(d)(1)(i) through (viii) under the Securities Act.

 

(b)          Waiver
and Amendment. Any provision of this Note may be amended, waived or modified upon the written consent of the Company and a
Majority in Interest of Investors; provided, however, that no such amendment, waiver or consent shall: (i) reduce
the principal amount of this Note without Investor’s written consent, or (ii) reduce the rate of interest of this Note without
Investor’s written consent.

 

(c)          Notices. All
notices, requests, demands, consents, instructions or other communications required or permitted hereunder shall be in
writing and faxed, mailed or delivered to each party at the respective addresses of the parties as set forth in the Note
Subscription Agreement, or at such other address or facsimile number as the Company shall have furnished to Investor in
writing. All such notices and communications will be deemed effectively given the earlier of (i) when received, (ii) when
delivered personally, (iii) one business day after being delivered by facsimile (with receipt of appropriate confirmation),
(i) one business day after being deposited with an overnight
courier service of recognized standing or (v) four days after being deposited in the U.S. mail, first class with postage
prepaid.

 

(d)         Pari
Passu Notes. Investor acknowledges and agrees that the payment of all or any portion of the outstanding principal amount of
this Note and all interest hereon shall be pari passu in right of payment and in all other respects to the other Notes. In the
event Investor receives payments in excess of its pro rata share of the Company’s payments to the Investors of all of the
Notes, then Investor shall hold in trust all such excess payments for the benefit of the holders of the other Notes and shall pay
such amounts held in trust to such other holders upon demand by such holders.

 

(e)         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.

 

(f)         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.

 

    	 	-6-	 

     

    

 

(g)          Waivers.
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.

 

(h)         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 California, without regard to the conflicts of law provisions of the State of California, or of any
other state.

 

(i)          Waiver
of Jury Trial; Judicial Reference. By acceptance of this Note, Investor hereby agrees and the Company hereby agrees to waive
their respective rights to a jury trial of any claim or cause of action based upon or arising out of this Note or any of the Transaction
Documents. If the jury waiver set forth in this paragraph is not enforceable, then any claim or cause of action arising out of
or relating to this Note, the Transaction Documents or any of the transactions contemplated therein shall be settled by judicial
reference pursuant to Code of Civil Procedure Section 638 et seq. before a referee sitting without a jury, such referee to be mutually
acceptable to the parties or, if no agreement is reached, by a referee appointed by the Presiding Judge of the California Superior
Court for Santa Clara County. This paragraph shall not restrict a party from exercising remedies under the Uniform Commercial Code
or from exercising pre-judgment remedies under applicable law.

 

(Signature Page Follows)

 

    	 	-7-	 

     

    

 

In witness whereof, this Note
is executed as of the date first written above.

 

	 	COMPANY
	 	 
	 	TENON MEDICAL, INC.
	 	a Delaware corporation
	 	 
	 	By:	/s/ Kal Mentak	 
	 	Name:	Kal Mentak	 
	 	Title: 	CEO	 

 

	ACCEPTED AND AGREED TO:	 
	 	 
	INVESTOR	 
	 	 
	By: 	/s/ Paul Orofino	 
	Name:	Paul Orofino	 
	Title:	 	 
	 	 
	Address:	 
	 	 
	5695 Via De La Plata Cir Delray Beach FL 33484	 
	 	 
	President	 
	 	 
	Email:	 
	paul.orofino@mdsinc.me	 

 

[Signature Page to Amended and Restated
Convertible Promissory Note]

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