Document:

Exhibit
10.2

 

UNSECURED
CONVERTIBLE PROMISSORY NOTE

 

	US$500,000.00
    	October
    25, 2021

 

FOR
VALUE RECEIVED ONCOTELIC THERAPEUTICS, INC., a Delaware Corporation (the “Company”), promises to pay to Golden Mountain
Partners, LLC, a California Limited Liability Company (the “Holder”), in lawful money of the United States of America,
the principal amount of FIVE HUNDRED THOUSAND DOLLARS (US$500,000), together with interest on the unpaid principal balance, in the manner
provided below.

 

1.
Purchase Agreement. This unsecured convertible promissory note (the “Note”) is issued to Holder pursuant to
the terms of that certain Unsecured Convertible Note Purchase Agreement between Company and Holder, of even date herewith, as it may
be amended from time to time (the “Agreement”).

 

2.
Draws. Subject to the terms and conditions set forth in this Note and the Agreement, Holder shall disburse to Company an aggregate
disbursement of US$500,000, on the dates and in the instalment amounts set forth in Schedule 3.2 (Disbursements) of the
Agreement.

 

3.
Maturity. Unless sooner paid or converted in accordance with the terms hereof, the entire unpaid principal balance of the Note
and all unpaid accrued interest thereon shall become fully due and payable on (a) the one year anniversary of the date of the Agreement,
or (b) the acceleration of the maturity of this Note by Holder upon occurrence of an Event of Default (as defined below) (such date,
the “Maturity Date”).

 

4.
Payments.

 

(a)
Form of Payment. All payments of interest and principal (other than payment by way of conversion) shall be in lawful money of
the United States of America to Holder, by ACH transfer according to Receiving Bank and ABA Routing Number information as may be specified
from time to time by Holder.

 

(b)
Interest Payments. Company shall pay to Holder accrued but unpaid interest upon the payment of the full outstanding principal
amount.

 

(c)
Prepayment. Company shall have the right to prepay any and all amounts owed under this Note in whole or in part at any time subject
to Section 6 (Conversion Right) below, provided that any such prepayment amount must be accompanied by the accrued and unpaid
interest on the principal being prepaid through the date of prepayment.

 

5.
Interest. Interest shall accrue on the unpaid principal balance of this Note at the rate of two percent (2%) per annum. Interest
shall be calculated on the basis of a year of 365 days, and charged for the actual number of days elapsed. Interest shall commence with
the date hereof and shall continue on the outstanding principal of this Note until paid or converted in accordance with the provisions
hereof.

 

6.
Conversion Right. At any time prior to repayment of this Note, Holder may elect, in lieu of repayment, to convert all or a portion
of the outstanding principal on this Note into that number of shares of Common Stock of Company equal to the quotient obtained by dividing
(a) 100.0% of the principal on this Note being converted by (b) the Conversion Price (as hereinafter defined). Holder will inform Company
of such election by delivering to Company this Note and a Notice of Conversion, the form of which is attached hereto as Schedule A
(a “Notice of Conversion”). If Holder delivers the Notice of Conversion to Company, Company may not elect to pay
Holder the amount of this Note to be converted without Holder’s written consent.

 

    	1

     

    

 

For
purposes of this Note, “Conversion Price” means the consolidated closing bid price of Company’s Common Stock
as determined by applicable OTC rules (or exchange where the Common Stock of Company is then traded), as of the date Company receives
a Notice of Conversion from Holder.

 

Holder
shall effect conversions by delivering to Company a Notice of Conversion accompanied by this Note, specifying therein the principal amount
of this Note to be converted. The date on which such conversion shall be effected (such date, the “Conversion Date”)
shall be the date of Company’s actual receipt of a Notice of Conversion, accompanied by this Note unless Company and Holder agree
in writing to another date. Conversions hereunder shall have the effect of lowering the outstanding principal amount of this Note in
an amount equal to the applicable principal amount converted. If less than the entire principal amount of this Note is converted, Company
will promptly issue a new Note to Holder representing the balance of this Note. From and after the Conversion Date, the portion of this
Note converted shall represent and be enforceable only as to the right to receive the shares of Common Stock issuable upon such conversion.

 

Promptly
after receipt of a Notice of Conversion, Company shall issue and deliver to Holder, but only against delivery of and after receiving
the original of this Note (or a lost note affidavit in the form and substance reasonably acceptable to Company), one or more certificates
representing such shares of Common Stock issued and registered as set forth in the Notice of Conversion. Thereupon, Company shall have
no further obligation with respect to the principal amount of this Note converted. ln lieu of issuing a fraction of a share of Common
Stock upon the conversion of this Note, Company shall pay Holder for any fraction of a share of Common Stock otherwise issuable upon
the conversion of this Note, cash equal to the same fraction of the then current per share Conversion Price.

 

7.
[Intentionally omitted.]

 

8.
Events of Default. For purposes of this Note, the occurrence of any of the following events shall constitute an “Event
of Default”:

 

(a)
Any indebtedness under this Note is not paid when and as the same shall become due and payable, whether at maturity, by acceleration,
or otherwise, and any such amount shall remain unpaid for a period of five (5) days after delivery to Company of notice of nonpayment;
or

 

(b)
Any breach or default by Company in the performance of any term, covenant, agreement, condition, undertaking or provision of any Loan
Document (as such term is defined in the Agreement); or

 

    	2

     

    

 

(c)
Company’s breach of or failure to observe or comply with Section 5.2.1 (Loan Proceeds and Distributions) of the Agreement;
or

 

(d)
Company (i) is unable to pay its debts generally as they become due; (ii) files a petition in bankruptcy or a petition to take advantage
of any insolvency act; (iii) makes an assignment of its property for the benefit of its creditors; (iv) applies for or consent to the
appointment of a receiver, trustee, custodian or liquidator of itself or of the whole or any substantial part of its property; (v) files
a petition or answer seeking reorganization or arrangement under the federal bankruptcy laws or any other applicable law or statute of
the United States of America or any state thereof; (vi) is declared insolvent according to any law; or a receiver or trustee is appointed
for Company or its property; or the interest of Company under this Note is levied on under execution or other legal process; or any petition
is filed by or against Company to declare Company bankrupt or to delay, reduce or modify Company’s capital structure if the Company
be a corporation or other entity; (vii) after a petition in bankruptcy is filed against it, is adjudicated a bankrupt, or if a court
of competent jurisdiction shall enter an order or decree appointing, without the consent of Company, as the case may be, a receiver of
Company or of the whole or substantially all of its property, or approving a petition filed against it seeking reorganization or arrangement
of Company under the federal bankruptcy laws or any other applicable law or statute of the United States of America or any state thereof,
and such judgment, order or decree shall not be vacated or set aside or stayed within thirty (30) days from the date of the entry thereof;
or

 

(e)
At any time there occurs a Change in Control Transaction. For purposes of this Note, a “Change in Control Transaction”
means (i) a sale, lease or other disposition of assets or properties of Company or its subsidiaries (calculated on a consolidated
basis) having a book value of fifty-one percent (51%) or more of the book value of all the assets and properties thereof, or (ii) any
transaction in which any person or entity shall directly or indirectly acquire from the holders thereof, by purchase or in a merger,
consolidation or other transfer or exchange of outstanding capital stock, ownership or control over capital stock of Company or any of
its subsidiaries (or securities exchangeable for or convertible into such stock or interests) entitled to elect a majority of such entity’s
Board of Directors or representing at least fifty-one percent (51%) of the number of shares of Common Stock outstanding; or

 

(f)
Company is liquidated or dissolved, or shall begin proceedings toward such liquidation or dissolution, or shall, in any manner, permit
the sale or divestiture of substantially all of its assets other than in connection with a merger or consolidation of Company into, or
a sale of substantially all of Company’s assets to, another corporation or entity; or

 

(g)
On or at any time after the date of this Note any of the Loan Documents for any reason, other than a full release in accordance with
the terms thereof, ceases to be in full force and effect or is declared to be null and void; or

 

(h)
This Note or any other Loan Document shall at any time for any reason cease to be valid, or Company or any subsidiary of Company contests
the validity or enforceability of any Loan Document in writing or denies that it has further liability under any Loan Document to which
it is party, or gives notice to such effect.

 

9.
Remedies Upon Event of Default; Acceleration. If an Event of a Default shall occur for any reason, whether voluntary or involuntary,
and be continuing, Holder may, upon notice or demand to Company, declare the outstanding indebtedness under this Note to be due and payable,
whereupon the outstanding indebtedness under this Note shall be and become immediately due and payable, and Company shall immediately
pay to Holder all such indebtedness.

 

    	3

     

    

 

10.
Governing Law. This Note shall be governed, construed and interpreted in accordance with the laws of the State of California,
without giving effect to principles of conflicts of law or choice of law that would cause the substantive laws of any other jurisdiction
to apply. Company irrevocably submits and consents to the jurisdiction of any California state court or federal court sitting in the
County of Los Angeles, State of California over any action or proceeding arising out of or relating to this Note or any other Loan Document
, and Company hereby irrevocably agrees that all claims in respect of any such action or proceeding may be heard and determined in such
courts.

 

11.
Amendment. Any term of this Note may be amended and the observance of any term of this Note may be waived (either generally or
in a particular instance and either retroactively or prospectively), only with the written consent of Company and Holder.

 

12.
Notices. Except as may otherwise be provided herein, all notices, requests, waivers and other communications made pursuant to
this Note shall be made in accordance with Section 8.4 (Notices) of the Agreement.

 

13.
Severability. If any provision of this Note is held invalid or unenforceable by any court of competent jurisdiction, the other
provisions of this Note will remain in full force and effect. Any provision of this Note held invalid or unenforceable only in part or
degree will remain in full force and effect to the extent not held invalid or unenforceable.

 

IN
WITNESS WHEREOF, Company has executed and delivered this Note as of the date first stated above.

 

	 	ONCOTELIC
    THERAPEUTICS, INC. (“COMPANY”)
	 	 	 
	 	By:
    	/s/
    Vuong Trieu
	 	Name:	 Vuong
    Trieu, PhD
	 	Title:
    	Chief
    Executive Officer

 

    	4

     

    

 

Schedule
A

Notice
of Conversion

 

The
undersigned, the Holder of the Note issued by Oncotelic Therapeutics, Inc. (which is attached to this Notice of Conversion), hereby elects
to convert the below stated outstanding principal portion of the Note into shares of Common Stock of Oncotelic Therapeutics, Inc., on
the terms and subject to the conditions of the Note, effective as of the date Company receives this Notice.

 

Please
send a certificate for the appropriate number of shares of Common Stock and a balance Note (if applicable) to the following address:

 

	 	Holder:	Golden
    Mountain Partners, LLC
	 	 	c/o
    Synergy Healthcare Innovations, LLC 800 W. Sixth Street, Suite 900
	 	 	Los
    Angeles, California 90017

 

Principal
Amount of Note Being Converted: $_ _ _ _ _ _ _ _ _ _ _ _ _

 

Register
and issue certificates for shares of Common Stock in the following name at the address set forth above.

 

	 	GOLDEN
    MOUNTAIN PARTNERS, LLC
	 	(“HOLDER”)
	 	 	 
	 	By:	            
	 	Name:	 
	 	Title:
    	 
	 	Date:	 
	 	 	 
	 	Tax
    Identification Number: 37-1664077

 

    	5Exhibit 4.1

 

	NUMBER	UNITS
	U-	 

 

SEE REVERSE FOR CERTAIN DEFINITIONS

 

CUSIP 253893 200

 

DIGITAL HEALTH ACQUISITION CORP.

 

UNITS CONSISTING OF ONE SHARE OF COMMON STOCK
AND ONE WARRANT, EACH WARRANT ENTITLING THE HOLDER TO PURCHASE ONE-HALF OF ONE SHARE OF COMMON STOCK

 

THIS CERTIFIES THAT______________________is the
owner of_________________________Units.

 

Each Unit (“Unit”)
consists of one (1) share of common stock, par value $0.0001 per share (“Common Stock”), of Digital Health
Acquisition Corp., a Delaware corporation (the “Company”) and one redeemable warrant (the “Warrant”).
Each Warrant entitles the holder to purchase one (1) share of Common Stock for $11.50 per share (subject to adjustment). Only whole
Warrants are exercisable. Each Warrant will become exercisable on the later of (i) thirty (30) days after the Company’s completion
of a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or other similar business combination with one
or more businesses (each a “Business Combination”), or (ii) twelve (12) months from the closing of the
Company’s initial public offering, and will expire unless exercised before 5:00 p.m., New York City Time, on the date that is five
(5) years after the date on which the Company completes its initial Business Combination, or earlier upon redemption or liquidation
(the “Expiration Date”). The Common Stock and Warrants comprising the Units represented by this certificate
are not transferable separately prior to________________2021, unless A.G.P./Alliance Global Partners elects to allow separate trading
earlier, subject to the Company’s filing of a Current Report on Form 8-K with the Securities and Exchange Commission containing
an audited balance sheet reflecting the Company’s receipt of the gross proceeds of the Company’s initial public offering and
issuing a press release announcing when separate trading will begin. The terms of the Warrants are governed by a Warrant Agreement, dated
as of______________, 2021, between the Company and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject
to the terms and provisions contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance
hereof. A copy of the Warrant Agreement is on file at the office of Continental Stock Transfer & Trust Company at 1 State Street,
30th Floor, New York, New York 10004, and are available to any Warrant holder or Rights holder on written request and without
cost.

 

This certificate is not valid
unless countersigned by the Transfer Agent and registered by the Registrar of the Company.

 

This certificate shall be
governed by and construed in accordance with the internal laws of the State of New York.

 

Witness the facsimile signature
of a duly authorized signatory of the Company.

 

	 	 	 
	Authorized Signatory	 	Transfer Agent

 

     1

     

    

 

Digital Health Acquisition Corp.

 

The Company will furnish without charge to each
unitholder who so requests, a statement of the powers, designations, preferences and relative, participating, optional or other special
rights of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences
and/or rights.

 

The following abbreviations, when used in the inscription
on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:

 

	TEN COM	—	as tenants in common	 	UNIF GIFT 

MIN ACT	—	 	Custodian	 
	TEN ENT	—	as tenants by the entireties	 	 	 	(Cust)	 	(Minor)
	 	 	 	 	 	 	 	 	 
	JT TEN	—	as joint tenants with right of survivorship and not as tenants in common	 	under Uniform Gifts to Minors Act
	 	 	 	 	 	 	(State)

 

Additional abbreviations may also be used though
not in the above list.

 

For value received,________________ hereby sell, assign and transfer
unto________________________________

 

(PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING
NUMBER OF ASSIGNEE)

 

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING
ZIP CODE, OF ASSIGNEE)

 

Units represented by the within Certificate,
and do hereby irrevocably constitute and appoint

 

Attorney to transfer the said Units on the books
of the within named Company with full power of substitution in the premises.

 

	Dated__________________	
	 	Notice: The signature to this assignment must correspond with the name as written
    upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.
	 	 
	Signature(s) Guaranteed:

 

THE SIGNATURE(S) MUST BE GUARANTEED BY AN
ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE
GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED (OR ANY SUCCESSOR RULE).

 

As more fully described in, and subject to the
terms and conditions described in, the Company’s final prospectus for its initial public offering dated _______________, 2021, the
holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain funds held in the trust account established
in connection with the Company’s initial public offering only upon the earlier to occur of (i) the Company’s completion
of an initial Business Combination, and then only in connection with those shares of common stock that such stockholder properly elected
to redeem, subject to the limitations described in the Company’s final prospectus, (ii) the redemption of any public shares
properly submitted in connection with a stockholder vote to amend the Company’s amended and restated certificate of incorporation
to (A) modify the substance or timing of the Company’s obligation to allow redemption in connection with the Company’s
initial Business Combination or certain amendments to the Company’s charter prior thereto or to redeem 100% of the Company’s
public shares if the Company does not complete its initial Business Combination within 12 months from the closing of the offering or (B) with
respect to any other provision relating to stockholders’ rights or pre-initial Business Combination activity and (iii) the
redemption of the Company’s public shares if the Company is unable to complete an initial Business Combination within 12 months
from the closing of the offering, subject to applicable law and as further described in the Company’s final prospectus. In no other
circumstances will a public stockholder have any right or interest of any kind to or in the trust account.

 

     2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00335-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00335-of-00352.parquet"}]]