Document:

Exhibit 4.3

Exhibit 4.3

	
REVOLVING PROMISSORY NOTE

	
 

	
FOR LOANS AND UNPAID SALARIES

	
Maximum Principal Advance

	
                                                       

	
San Diego, California

		
 

	
	
$___________U.S.

		
August 26, 2005

            IN CONSIDERATION of amounts advanced, including unpaid business related and approved expenses and unpaid salaries and benefits hereunder, VIPER NETWORKS, INC.,
a Nevada corporation (“Borrower”) promises to pay to the order of ________________ (“Lender”), in lawful money of the United States, all principal, together with accrued interest and all other charges, owed under the terms of this Note as
hereinafter set forth. In the sole and complete discretion of Lender, amounts may be readvanced hereunder provided that such amounts do not exceed the maximum principal, as shown below.

            The maximum principal advance to Borrower shall be ________________ dollars ($___________), or such lesser amount as determined by the parties hereto and
Lender shall have no obligation to make any advance in excess of that amount. In the event the unpaid balance of this Note ever is greater than the maximum principal advance, Borrower agrees to repay immediately the excess upon Lender’s demand.

            Prior to maturity, interest shall accrue on the unpaid balance of the Note at a fluctuating  rate equal to the Reference Rate of interest per annum
announced by the U.S. Government for 30 day Treasury notes in effect from time to time.  The rate at which interest accrues shall be adjusted simultaneously, at each announced change of the Reference Rate. The interest rate shall be computed on the basis of the
actual number of days elapsed over a year of 360 days, and compounded annually. Such interest, however, shall not exceed the maximum interest rate permitted under California law.

            After maturity, whether by acceleration, event of default, demand or otherwise, interest shall accrue on the unpaid balance of the Note at a fixed rate of
twelve percent (12%) per annum. The interest rate shall be computed on the basis of the actual number of days elapsed over a year of 360 days, and compounded annually.

            If any interest in excess of the maximum provided for by law is called for, or shall be adjudicated to be so, the provisions of this paragraph shall govern,
and neither the Borrower nor any of Borrower’s successors or assigns shall be obligated to pay the amount of such interest to the extent that it is in excess of the amount permitted by law, and any such amount so paid, at the option of the Lender, shall be
either applied against the principal balance of the Note or rebated to Borrower within thirty (30) days after such determination.

            The total outstanding principal balance and accrued and unpaid interest, together with all other amounts due thereon shall be due and payable in full no later
than December 31, 2006.

            Whenever any payment to be made hereunder shall be due on a Saturday, Sunday or public holiday under the laws of the United States or of the State of
California, such payment shall be made on the next succeeding business day.

            Borrower may prepay the balance of the outstanding principal or interest under this Note, or any part of the Note, without penalty at any time.

            All payments shall be applied in the following order:  (i) to any collection costs Lender may have incurred in procuring Borrower’s performance
on this Note; (ii) to the outstanding interest which has accrued on the balance of the Note; and (iii) to the outstanding principal balance of the Note. If any payment is not accompanied with specific instructions as to application, and Borrower has any
obligation to Lender other than this Note, Lender may apply the payment to such obligation as Lender may elect.

            A default of this Note shall consist of any of the following Events of Default:  (i) any payment is not made when due; (ii) Lender has a good
faith belief that the prospect of timely repayment is impaired regardless of whether such belief is caused by any act or failure to act of Borrower, guarantor, endorser or accommodation party on this Note; (iii) any warranty, representation or statement made or
furnished to the holder by or on behalf of Borrower proves to have been false in any material respect when made or furnished; or (iv) the death, dissolution, termination of existence, merger, consolidation, insolvency, business failure, appointment of a receiver
of any part of the property of, assignment for the benefit of creditors by, or the commencement of any proceedings under bankruptcy or insolvency laws by or against Borrower (or any of them if more than one) or any guarantor or surety for Borrower. In the event of a
default, the unpaid principal balance of this Note, plus accrued interest shall be accelerated and become immediately due and payable.

            Borrower agrees to pay all collection costs of Lender, all reasonable attorneys’ fees and legal expenses (whether or not suit is commenced and whether or
not incurred in connection with appeal of a lower court judgment or order and in collecting any judgment entered thereon) and any other costs or fees awarded to Lender by a court.

            In addition to all liens upon, and the right of set off against, the monies, securities and other property of Borrower given to Lender by law, if any,
Lender shall have a lien upon, and a right of set off against, all monies, securities and other property of Borrower, now or hereafter in the possession of Lender, whether for safekeeping or otherwise.

            No waiver of any Lender’s rights may be implied by any failure of Lender to act or any delay by Lender in taking action in connection with exercising any
of Lender’s rights under this Note or any other agreement between Borrower and Lender.

            This Note shall be made under, and shall be interpreted and enforced in accordance with, the laws of the State of California.

            Borrower waives presentment, demand for payment, notice of dishonor, protest and notice of protest. The addition or release of any party, surety, or guarantor
of the collateral shall not affect Borrower’s liability hereunder.

            This Note will be convertible at the option of the Lender at any time from and after date of Note and prior to payoff. This Note will be convertible into fully
paid and non-assessable shares of Common Voting stock of the Company at the 52-week low trading range of the Borrower’s public share price. In order to exercise the conversion privilege granted, Lender will surrender this Note to the Company with the form of
conversion hereinafter provided duly executed.  The common shares issued for conversion will be non-dilutive and not subject to any reverse split or recapitalization.

            Lender’s agreement to advance funds pursuant to the terms hereof is made in reliance upon the information Borrower has given to Lender in connection with
this Note, which Borrower promises is true and correct. Any information Borrower provides to Lender in the future shall also be true and correct.

	
BORROWER:

	
 

	
VIPER NETWORKS, INC.

	
  

	
By:     

	
_________________________________

		
	
Title:

	
_________________________________Exhibit 4.1

 

 

	
  COMMON
  STOCK

  	
  Intarcia

  Therapeutics, Inc.

  	
  COMMON
  STOCK

  
	
  ITCA

  THIS CERTIFICATE IS
  TRANSFERABLE IN

  CANTON, MA, JERSEY CITY,
  NJ

  OR NEW YORK, NY

  	
   

  	
  SEE REVERSE FOR

  CERTAIN DEFINITIONS

  CUSIP 45820N 10 2

  

 

INCORPORATED
UNDER THE LAWS OF THE STATE OF DELAWARE

 

This
Certifies that

 

 

 

 

is the
record holder of

 

FULLY
PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $.001 PAR VALUE, OF

 

INTARCIA THERAPEUTICS, INC.

 

transferable on the books of
the Corporation by the holder hereof in person or by duly authorized attorney
upon the surrender of this certificate properly endorsed. This certificate is
not valid until countersigned by the Transfer Agent and registered by the
Registrar.

 

                WITNESS the facsimile seal of the Corporation and the
facsimile signatures of its duly authorized officers.

 

Dated:

 

	
  SECRETARY

  	
  PRESIDENT

  
	
  /s/ James M. Ahlers

  	
  /s/ K. Alice Leung

  

 

 

COUNTERSIGNED AND REGISTERED

                EQUISERVE TRUST COMPANY, N.A.

                                TRANSFER AGENT AND REGISTRAR

 

                                                /s/ Stephen Cesso

                                                AUTHORIZED SIGNATURE

 

 

[SEAL]

 

 

 

INTARCIA THERAPEUTICS, INC.

 

The Corporation will furnish
without charge to each stockholder who so requests the powers, designations,
preferences and relative, participating, optional, or other special rights of
each class of stock or series thereof and the qualifications, limitations or
restrictions of such preferences and/or rights. Such requests shall be made to
the Corporations’s Secretary at the principal office of the Corporation.

 

                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

TEN ENT - as tenants by the
entireties

JT TEN - as joint tenants
with right of survivorship and not as tenants in common

 

	
  UNIF GIFT MIN ACT-

  	
   

  	
  Custodian

  	
   

  
	
   

  	
  (Cust)

  	
   

  	
  (Minor)

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
  under Uniform Gifts to
  Minors

  	
   

  
	
   

  	
  Act

  	
   

  
	
   

  	
   

  	
  (State)

  
	
   

  	
   

  	
   

  	
   

  
	
  UNIF TRF MIN ACT-

  	
   

  	
  Custodian
  (until age

  	
   

  	
  )

  
	
   

  	
  (Cust)

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   under Uniform Transfers

  
	
   

  	
   

  	
  (Minor)

  	
   

  
	
   

  	
  to
  Minors Act

  	
   

  
	
   

  	
   

  	
  (State)

  
									

 

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

 

FOR VALUE RECEIVED, ____________
hereby sell, assign and transfer(s) unto

 

 

 

PLEASE INSERT SOCIAL SECURITY
OR

OTHER IDENTIFYING NUMBER OF
ASSIGNEE

__________________________________________

__________________________________________

 

____________________________________________________________________________

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

 

____________________________________________________________________________

 

____________________________________________________________________________

 

______________________________________________________________________
Shares 

of the Common Stock represented by the within
Certificate, and do(es) hereby irrevocably constitute and appoint
________________________________________________Attorney to transfer the said
stock on the books of the within named Corporation with full power of
substitution in the premises.

 

Dated _________________________    X
______________________________________

 

NOTICE: THE SIGNATURE TO THIS
ASSIGNMENT MUST CORRESPOND WITH

THE NAME(s) AS WRITTEN UPON
THE FACE OF THE CERTIFICATE IN EVERY

PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE

WHATEVER.

 

 

SIGNATURE(S) GUARANTEED:

 

By
______________________________________________________________________

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.

 

KEEP THIS
CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE
CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF
A REPLACEMENT CERTIFICATE.

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