IMPORTANT NOTICE IMPORTANT NOTICE: You must read the following disclaimer before continuing. The following disclaimer applies to the attached Preliminary Offering Circular. You are therefore advised to read this disclaimer carefully before reading, accessing or making any other permitted use of the Preliminary Offering Circular. In accessing the Preliminary Offering Circular, you agree to be bound by the following terms and conditions, including any modifications to them any time you receive any information from us as a result of such access. The attached Preliminary Offering Circular is being furnished to you on a confidential basis and is intended for the addressee only. THIS OFFERING IS AVAILABLE ONLY TO INVESTORS WHO ARE EITHER (1) "QUALIFIED INSTITUTIONAL BUYERS" ("QIBs") (AS DEFINED IN RULE 144A, PROMULGATED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT")) IN THE UNITED STATES OR (2) INSTITUTIONAL OR OTHER INVESTORS WHO ARE NOT U.S. PERSONS (WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT) LOCATED OUTSIDE OF THE UNITED STATES AND THAT ARE NOT ACQUIRING THE SECURITIES FOR THE ACCOUNT OR BENEFIT OF A U.S. PERSON IN RELIANCE ON REGULATION S OF THE SECURITIES ACT. NOTHING IN THIS ELECTRONIC TRANSMISSION CONSTITUTES AN OFFER OF SECURITIES FOR SALE IN ANY JURISDICTION WHERE IT IS UNLAWFUL TO DO SO. THE SECURITIES HAVE NOT BEEN, AND WILL NOT BE, REGISTERED UNDER THE SECURITIES ACT, OR THE SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR OTHER JURISDICTION AND THE SECURITIES MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS (AS DEFINED IN REGULATION S UNDER THE SECURITIES ACT), EXCEPT PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE LAWS OF OTHER JURISDICTIONS. THE FOLLOWING PRELIMINARY OFFERING CIRCULAR MAY NOT BE FORWARDED OR DISTRIBUTED TO ANY OTHER PERSON AND MAY NOT BE REPRODUCED IN ANY MANNER WHATSOEVER. ANY FORWARDING, DISTRIBUTION OR REPRODUCTION OF THE PRELIMINARY OFFERING CIRCULAR IN WHOLE OR IN PART IS UNAUTHORIZED. FAILURE TO COMPLY WITH THIS DIRECTIVE MAY RESULT IN A VIOLATION OF THE SECURITIES ACT OR THE APPLICABLE LAWS OF OTHER JURISDICTIONS. Confirmation of your Representation: In order to be eligible to view the Preliminary Offering Circular or make an investment decision with respect to the securities, investors must be either (1) QIBs or (2) non-U.S. persons (within the meaning of Regulation S under the Securities Act) outside the United States. The Preliminary Offering Circular is being sent at your request and by accepting the e-mail and accessing the Preliminary Offering Circular, you shall be deemed to have represented to us that (1) you and any customers you represent are either (a) QIBs or (b) non-U.S. persons (within the meaning of Regulation S under the Securities Act), and (2) that you consent to delivery of such Preliminary Offering Circular by electronic transmission. You are reminded that the Preliminary Offering Circular has been delivered to you on the basis that you are a person into whose possession the Preliminary Offering Circular may be lawfully delivered in accordance with the laws of the jurisdiction in which you are located and you may not, nor are you authorized to, deliver the Preliminary Offering Circular to any other person. The materials relating to the offering do not constitute, and may not be used in connection with, an offer or solicitation in any place where offers or solicitations are not permitted by law. If a jurisdiction requires that the offering be made by a licensed broker or dealer and the joint book-running managers referred to in the Preliminary Offering Circular (the "Joint Book-Running Managers") or any affiliate of the Joint Book-Running Managers is a licensed broker or dealer in that jurisdiction, the offering shall be deemed to be made by the Joint Book- Running Managers or such affiliate on behalf of the issuer of the securities described in the Preliminary Offering Circular in such jurisdiction. The Preliminary Offering Circular has been sent to you in an electronic form. You are reminded that documents transmitted via this medium may be altered or changed during the process of electronic transmission, and consequently neither the Joint Book-Running Managers, nor any person who controls them nor any of their directors, officers, employees nor any of their agents nor any affiliate of any such person accept any liability or responsibility whatsoever in respect of any difference between the Preliminary Offering Circular distributed to you in electronic format and the hard copy version available to you on request from the Joint Book-Running Managers. OFFERING CIRCULAR CONFIDENTIAL The Republic of Costa Rica U.S.$1,200,000,000 6.125% Notes due 2031 U.S.$300,000,000 7.158% Notes due 2045 The Republic of Costa Rica (the "Republic" or "Costa Rica") is offering U.S.$1,200,000,000 aggregate principal amount of 6.125% Notes due 2031 (the "2031 Notes") and U.S.$300,000,000 aggregate principal amount of 7.158% Notes due 2045 (the "2045 Notes" and, collectively with the 2031 Notes, the "Notes"). The 2045 Notes will be consolidated, form a single series, and be fully fungible, with the Republic's outstanding U.S.$1,000,000,000 7.158% Global Notes due 2045 issued on March 12, 2015 (the "Original 2045 Notes"). After giving effect to this offering, the total amount outstanding of the Republic's 7.158% Notes due 2045 will be U.S.$1,300,000,000. Interest on the 2031 Notes will be payable semi-annually in arrears on February 19 and August 19 of each year, commencing on February 19, 2020. The 2031 Notes will mature on February 19, 2031 (the "2031 Maturity Date"). Principal on the 2031 Notes will be paid in three installments on February 19, 2029, February 19, 2030 and on the 2031 Notes Maturity Date. Interest on the 2045 Notes will be payable semi- annually in arrears on March 12 and September 12 of each year, commencing on March 12, 2020. The 2045 Notes will mature and principal thereon will be repaid in a single installment at par on March 12, 2045. The Republic may, at its option, redeem the Notes, in whole or in part, before maturity, on no less than 30 nor more than 60 days' notice on the terms described under "Terms and Conditions of the Notes – Optional Redemption." The Notes will constitute general, direct, unsecured and unconditional Public External Indebtedness of the Republic. The Notes rank and will rank without any preference among themselves and equally with all other unsecured and unsubordinated Public External Indebtedness (as defined under "Terms and Conditions of the Notes—Definitions") of the Republic. It is understood that this provision shall not be construed so as to require the Republic to make payments under the Notes ratably with payments being made under any other Public External Indebtedness. The Republic has pledged its full faith and credit for the due and punctual payment of all amounts due in respect of the Notes. The Notes will contain "collective action clauses". Under these provisions, which differ from the terms of the Republic's Public External Indebtedness issued prior to March 12, 2015, the Republic may amend the payment provisions of the Notes and other reserved matters listed in the indenture dated March 12, 2015 (the "Indenture") with the consent of the holders of: (1) with respect to a single series of notes, more than 75% of the aggregate principal amount of the outstanding notes of such series; (2) with respect to two or more series of notes issued under the Indenture, if certain "uniformly applicable" requirements are met, more than 75% of the aggregate principal amount of the outstanding notes of all series affected by the proposed modification, taken in the aggregate; or (3) with respect to two or more series of notes issued under the Indenture, more 2 than 66 /3% of the aggregate principal amount of the outstanding notes of all series affected by the proposed modification, taken in the aggregate, and more than 50% of the aggregate principal amount of the notes of each series affected by the proposed modification, taken individually. Except as described herein, payments on the Notes will be made without deduction for or on account of withholding taxes imposed by the Republic to the extent set forth under "Terms and Conditions of the Notes—Additional Amounts." Application will be made to list the 2031 Notes on the Official List of the Luxembourg Stock Exchange and to have the 2031 Notes admitted to trading on the Euro MTF Market. The Original 2045 Notes are listed on the Official List of the Luxembourg Stock Exchange and are admitted to trading on the Euro MTF Market. See "Risk Factors" beginning on page 18 regarding certain risk factors you should consider before investing in the Notes. Issue Price for the 2031 Notes: 99.077% plus accrued interest, if any, from November 19, 2019 Issue Price for the 2045 Notes: 98.925% plus accrued interest from September 12, 2019 The Notes have not been and will not be registered under the United States Securities Act of 1933, as amended (the "Securities Act"). The Notes may not be offered or sold within the United States or to U.S. persons except to qualified institutional buyers in reliance on the exemption from registration provided by Rule 144A under the Securities Act and to certain persons in offshore transactions in reliance on Regulation S under the Securities Act.