PROMISSORY NOTE 4   $42,000.00 Arlington County, Virginia September 1, 2019    For valuereceived,andintendingto belegallybound,CoJax Oil and Gas Corporation,aVirginia corporation, and  its successorsin  interest("Maker")  promisestopayto theorder of JEFFREY GUZY,a natural person,("Holder")theprincipal sum of FORTY TWO THROUSAND ($42,000.00) ("principal") and simple annual interest accruedthereonat TWOPERCENT(2%)perannum ("interest").  Principalandaccrued interestshall be dueand payableonSEPTEMBER 1,2020("Maturity Date").The Maker may prepayall or any portionofthisPromissory Notewithout penalty at anytime.  Acceleration. All indebtedness provided forin thisPromissory Note shall become due and payableimmediately,upon notice to theMaker:  (1)Terminationof anyemployment agreement betweenMaker and Holder; or (2)Thefailure to pay the principaland accrued interest thereon onthe Maturity Date; or (3)Any othermaterial breach of anyterm or conditionsetforthin thisPromissory Note by the Makerthat is not cured withinfifteen (15)daysfollowing writtennoticeof suchbreach from the Holder; or (4)The filingof a voluntary or involuntary petition by or on behalf ofthe Maker under any of the provisions of thefederal bankruptcy laws,which petitionis notwithdrawn in 60 daysfrom date of following; or (5)Makeradopts a planof completedissolution.  Collection Costs. The Maker agreestopay all actualexpendituresincurredby the Holderinanysuccessfulattempttocollectanyamountdueunderthis Promissory Note, includingallcostsoflegalactionand reasonableattorneys' fees.  Extensions and Waivers. Noextensionof time forpaymentgrantedbytheHolderof all or anypartof theamountowedunderthis Promissory Noteat any time shallaffect theliabilityof the Maker, or of any surety, accommodationparty,guarantor, or endorser of this Promissory Note.Acceptance bythe Holderofanypartial paymentofprincipalorinterestaccruedthereon,after any defaultshall notoperatetoextend thetimeof payment of any amountthen remaining unpaidor  constitute awaiverofanyofthe other rightsof the HolderunderthisPromissory Note; provided,however,that the Makershallbe entitledtoa fifteen(15)daygrace period with  respect  to  each  payment  due hereunder.NodelaybytheHolderinexercising any power or right shalloperateas a waiverofany powerorright.No singleor partial exercise of any power orright shallprecludeother or further exerciseofthepower orright, ortheexerciseofanyotherpower or right. Thewaiver ofany default or grounds for acceleration bythe Holdershallnotoperate as a waiver of any subsequentdefault or  1


grounds for acceleration, or of any power or right the Holder mayhave under the terms of this Promissory Note.  Waiver of Presentment, Notice of Dishonor,and Protest.Subject to the notice and cure, and grace period provisions of this Promissory Note, the Maker waives demand and presentment for payment,notice of protest, and protest of this Promissory Note.  Modifications. No waiver or modification of the terms of this Promissory Note shall be valid unless in writing,signed by the Maker and the Holder. Any modification shall be valid only to the  extent  set forth in writing.  Jurisdiction.This Agreement shall be construed and enforced under,and in accordance with, the laws of the Commonwealth of Virginia (excluding the Commonwealth of Virginia's statutes and cases regarding conflicts of laws).Venue for resolution of disputes shall be in Arlington County, Virginia.  Payments Unconditional; No Defense or Setoff. The obligations of the Maker to pay the principal and the accrued interest on this Promissory Note and all other amounts payable to the Holder hereunder shall be absolute and unconditional without defense or set-off by reason of any default by the Holder under this Promissory Note.  Assignment. The Holder may assign its rights under this Promissory Note to one of its affiliates without the Maker's consent. "Affiliate" shall mean a corporation in control of, in common control with, or controlled by, the Holder.  The undersigned Maker accepts the terms of this Promissory Note and intends to be legally bound thereby.  AGREED AND ACCEPTED BY COJAX OIL AND GAS CORPO RATION,a Virginia corporation   By /s/Jeffrey J. Guzy  Name:Jeffrey J. Guzy  Title:Executive Chairman  Date: September 1, 2019  2