Form DSTRBRPT INTER-AMERICAN DEVELOPME

File No. 83-1

Regulation IA

Rule 3

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

100 F Street, NE

Washington, D.C. 20549

REPORT OF

THE INTER-AMERICAN DEVELOPMENT BANK

(the “Bank”)

In respect of the Bank’s

Series No. 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

Filed pursuant to Rule 3 of Regulation IA

Dated: July 16, 2025

File No. 83-1

Regulation IA

Rule 3

The following information is filed pursuant to Rule 3 of Regulation IA in respect of the issuance by the Bank of U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035, Series No. 1000 (the “Notes”) under the Bank’s Global Debt Program. The Notes are being issued pursuant to: the Prospectus dated July 28, 2020 (the “Prospectus”) and the Standard Provisions dated June 1, 2021 (both previously filed); and the Pricing Supplement dated July 14, 2025 (the “Pricing Supplement”) and the Terms Agreement dated July 14, 2025 (the “Terms Agreement”) (both attached hereto). This report contains information specified in Schedule A to Regulation IA concerning a particular issue of securities which has not been previously available.

See cover page and pages 14 through 31 of the Prospectus; and the attached Pricing Supplement.

Item 2.Distribution of Securities

See pages 54 through 57 of the Prospectus; and the attached Terms Agreement.

Item 3.Distribution Spread

See Item 3 above.

Not applicable.

See Item 1 “Use of Proceeds” under “General Information / Additional Information Regarding the Notes” in the attached Pricing Supplement.

(A) Opinion of the Chief Counsel (Corporate Legal Affairs Division) of the Bank as to the legality of the obligations, dated March 7, 2025

(B) Pricing Supplement

(C) Terms Agreement

Exhibit A

March 7, 2025

To the Dealers appointed

from time to time pursuant to a

Terms Agreement or Appointment Agreement

under the Global Debt Program of the

Inter-American Development Bank

Ladies and Gentlemen:

Reference is made to the proceedings of the Inter-American Development Bank (the “Bank”) to establish the Global Debt Program of the Bank, as it may be amended, restated, or superseded from time to time (the “Program”), and to authorize the issue and sale of Notes thereunder (the “Notes”) with reference to a Prospectus dated July 28, 2020 (as supplemented and amended from time to time, the “Prospectus”). In connection with such proceedings, I have examined, among other documents, the following:

Pursuant to Section 5(e)(ii) of the Standard Provisions, I am of the opinion that:

While I assume no responsibility with respect to the statements in the Prospectus, nothing has come to my attention which has caused me to believe that the Prospectus, as of its date and as of the date hereof, and excluding the financial statements or other financial data, contains any untrue statement of a material fact or omits to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

This letter does not relate to the financial statements or other financial data contained in the Prospectus.

In rendering the foregoing opinion, I have relied, with respect to matters of New York law, upon the opinion of Sullivan & Cromwell LLP and, with respect to matters of English law, upon the opinion of Linklaters LLP, each delivered on the date hereof in accordance with the Standard Provisions. Also, I have assumed that signatures on all documents examined by me are genuine.

This letter is furnished by me as Chief Counsel (Corporate Legal Affairs Division) of the Bank to Dealers appointed from time to time under the Program and is solely for their benefit.

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Exhibit B

EXECUTION VERSION

PRICING SUPPLEMENT

Inter-American Development Bank

Global Debt Program

Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035 (the “Notes”)

Issue Price: 99.113 percent

Application has been made for the Notes to be admitted to the

Official List of the Financial Conduct Authority and

to trading on the London Stock Exchange plc’s

UK Regulated Market

Deutsche Bank

Nomura

TD Securities

Wells Fargo Securities

Barclays

BMO Capital Markets

BNP Paribas

BofA Securities

Citigroup

HSBC

J.P. Morgan

Morgan Stanley

National Bank of Canada Financial Markets

Scotiabank

The date of this Pricing Supplement is July 14, 2025.

PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

Terms used herein shall be deemed to be defined as such for the purposes of the Terms and Conditions (the “Conditions”) set forth in the Prospectus dated July 28, 2020 (the “Prospectus”) (which for the avoidance of doubt does not constitute a prospectus for the purposes of Part VI of the United Kingdom (“UK”) Financial Services and Markets Act 2000 or a base prospectus for the purposes of Regulation (EU) 2017/1129 (as amended, the “Prospectus Regulation”) or the Prospectus Regulation as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 (“EUWA”)). This Pricing Supplement must be read in conjunction with the Prospectus. This document is issued to give details of an issue by the Inter-American Development Bank (the “Bank”) under its Global Debt Program and to provide information supplemental to the Prospectus. Complete information in respect of the Bank and this offer of the Notes is only available on the basis of the combination of this Pricing Supplement and the Prospectus.

MiFID II and UK MiFIR product governance / Retail investors, professional investors and ECPs target market – See “General Information—Additional Information Regarding the Notes—Matters relating to MiFID II and UK MiFIR” below.

Terms and Conditions

The following items under this heading “Terms and Conditions” are the particular terms which relate to the issue the subject of this Pricing Supplement. Together with the applicable Conditions (as defined above), which are expressly incorporated hereto, these are the only terms that form part of the form of Notes for such issue.

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

Other Relevant Terms

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

General Information

Additional Information Regarding the Notes

The language set out under the heading “Use of Proceeds” in the Prospectus shall be deleted in its entirety and replaced by the following:

The Bank’s mission is to improve lives in Latin America and the Caribbean countries by contributing to the acceleration of the process of economic and social development and by supporting efforts to reduce poverty and inequality in a sustainable, climate friendly way. All projects undertaken by the Bank go through the Bank’s rigorous sustainability framework. The framework tracks measurable results, adherence to lending targets and the effectiveness of its environmental and social safeguards.

The net proceeds from the sale of the Notes will be included in the ordinary capital resources of the Bank, used in its ordinary operations, and will not be committed or earmarked for lending to, or financing of, any specific loans, projects, or programs.

The Bank’s administrative and operating expenses are currently covered entirely by the Bank’s various sources of revenue, consisting primarily of net interest margin and investment income (as more fully described in the Information Statement).

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

Although the net proceeds from the sale of the Notes will be included in the ordinary capital resources of the Bank, used in its ordinary operations, the Notes may not satisfy an investor’s requirements if the investor seeks to invest in assets with certain sustainability characteristics. No assurance is or can be given to investors that the use of proceeds will satisfy, whether in whole or in part, any present or future investor expectations or requirements regarding any investment criteria or guidelines applicable to any investor or its investments. In addition, no assurance is or can be given to investors that any projects undertaken by the Bank will meet any or all investor expectations regarding “sustainable” or other equivalently-labelled performance objectives or that any adverse environmental, social and/or other impacts will not occur during the implementation by the borrower or any other implementing entity of any projects. Furthermore, it should be noted that there is currently no clearly-defined definition (legal, regulatory or otherwise) of, nor market consensus as to what constitutes, a “sustainable” or an equivalently-labelled project or as to what precise attributes are required for a particular project to be defined as “sustainable” or such other equivalent label and if developed in the future, Notes may not comply with any such definition or label.

There can be no assurance that the net proceeds from the sale of any particular tranche of Notes will be totally or partially disbursed for any projects undertaken by the Bank within the term of such Notes. Not all projects undertaken by the Bank will be completed within the specified period or with the results or outcome as originally expected or anticipated by the Bank and some planned projects might not be completed at all. Each potential purchaser of the Notes should determine for itself the relevance of the information contained in this Prospectus regarding the use of proceeds and its purchase of the Notes should be based upon such investigation as it deems necessary.

The Bank does not fall under the scope of application of either the MiFID II or the UK MiFIR regime. Consequently, the Bank does not qualify as an “investment firm”, “manufacturer” or “distributor” for the purposes of MiFID II or UK MiFIR.

MiFID II product governance / Retail investors, professional investors and ECPs target market – Solely for the purposes of the EU manufacturer’s product approval process, the target market assessment in respect of the Notes has led to the conclusion that: (i) the target market for the Notes is eligible counterparties, professional clients and retail clients, each as defined in MiFID II; and (ii) all channels for distribution of the Notes are appropriate, including investment advice, portfolio management, non-advised sales and pure execution services. Any person subsequently offering, selling or recommending the Notes (a “distributor”) should take into consideration the EU manufacturer’s target market assessment; however, a distributor subject to MiFID II is responsible for undertaking its own target market assessment in respect of the Notes (by either adopting or refining the EU manufacturer’s target market assessment) and determining appropriate distribution channels, subject to the distributor’s suitability and appropriateness obligations under MiFID II, as applicable.

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

For the purposes of this provision, the expression “EU manufacturer” means Deutsche Bank AG, London Branch, and the expression “MiFID II” means Directive 2014/65/EU, as amended.

UK MiFIR product governance / Retail investors, professional investors and ECPs target market – Solely for the purposes of each UK manufacturer’s product approval process, the target market assessment in respect of the Notes has led to the conclusion that: (i) the target market for the Notes is retail clients, as defined in point (8) of Article 2 of Regulation (EU) No 2017/565 as it forms part of UK domestic law by virtue of the EUWA, eligible counterparties, as defined in COBS, and professional clients, as defined in UK MiFIR; and (ii) all channels for distribution of the Notes are appropriate, including investment advice, portfolio management, non-advised sales and pure execution services. Any person subsequently offering, selling or recommending the Notes (a “distributor”) should take into consideration the UK manufacturers’ target market assessment; however, a distributor subject to the UK MiFIR Product Governance Rules is responsible for undertaking its own target market assessment in respect of the Notes (by either adopting or refining the UK manufacturers’ target market assessment) and determining appropriate distribution channels, subject to the distributor’s suitability and appropriateness obligations under COBS, as applicable.

For the purposes of this provision, (i) the expression “UK manufacturers” means Deutsche Bank AG, London Branch, Nomura International plc, and The Toronto-Dominion Bank (ii) the expression “COBS” means the FCA Handbook Conduct of Business Sourcebook, (iii) the expression “UK MiFIR” means Regulation (EU) No 600/2014 as it forms part of UK domestic law by virtue of the EUWA, and (iv) the expression “UK MiFIR Product Governance Rules” means the FCA Handbook Product Intervention and Product Governance Sourcebook.

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PRICING SUPPLEMENT

Inter-American Development Bank Global Debt Program Series No.: 1000

U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035

Exhibit C

EXECUTION VERSION

TERMS AGREEMENT NO. 1000 UNDER

THE PROGRAM

July 14, 2025

Inter-American Development Bank

1300 New York Avenue, N.W.

Washington, D.C. 20577

The undersigned agree to purchase from you (the “Bank”) the Bank’s U.S.$3,000,000,000 4.375 percent Notes due July 16, 2035 (the “Notes”) described in the Pricing Supplement related thereto, dated as of the date hereof (the “Pricing Supplement”), at 9:00 a.m. New York time on July 16, 2025 (the “Settlement Date”), at an aggregate purchase price of U.S.$2,968,140,000, calculated as set forth below, on the terms set forth herein and in the Standard Provisions, dated as of June 1, 2021, relating to the issuance of Notes by the Bank (the “Standard Provisions”), incorporated herein by reference. In so purchasing the Notes, each of the undersigned understands and agrees that it is not acting as an agent of the Bank in the sale of the Notes.

When used herein and in the Standard Provisions as so incorporated, the term “Notes” refers to the Notes as defined herein and the term “Time of Sale” refers to July 8, 2025, 5:05 p.m. London time. All other terms defined in the Prospectus, the Pricing Supplement relating to the Notes and the Standard Provisions shall have the same meaning when used herein.

The Bank represents and warrants to us that the representations, warranties and agreements of the Bank set forth in Section 2 of the Standard Provisions (with the “Prospectus” revised to read the “Prospectus as amended and supplemented with respect to Notes at the date hereof”) are true and correct on the date hereof.

The obligation of each of the undersigned to purchase Notes hereunder is subject to the continued accuracy, on each date from the date hereof to and including the Settlement Date, of the Bank’s representations and warranties contained in the Standard Provisions and to the Bank’s performance and observance of all applicable covenants and agreements contained therein. The obligation of the undersigned to purchase Notes hereunder is further subject to the receipt by the undersigned of the documents referred to in Section 6(b) of the Standard Provisions.

Subject to Section 5(f) of the Standard Provisions, the Bank certifies to the undersigned that, as of the Settlement Date, (i) the representations and warranties of the Bank contained in the Standard Provisions are true and correct as though made at and as of the Settlement Date, (ii) the Bank has performed all of its obligations under this Terms Agreement required to be performed or satisfied on or prior to the Settlement Date, and

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(iii) the Prospectus contains all material information relating to the assets and liabilities, financial position, and net income of the Bank, and nothing has happened or is expected to happen which would require the Prospectus to be supplemented or updated.

The respective principal amounts of the Notes that each of the Managers commits to underwrite are set forth opposite their names below:

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For purposes hereof, the notice details of each of the undersigned are as follows:

FOR THE BANK:

Inter-American Development Bank

1300 New York Avenue, N.W.

Washington, D.C. 20577

Attention: Finance Department,

  Cash Management and Settlements Group

Email:    [email protected]

Telephone:  202-623-3131

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FOR THE MANAGERS:

Wells Fargo Securities, LLC

550 South Tryon Street, 4th Floor

MAC D1086-041

Charlotte, NC 28202-4200

Attention: Agency Trading Desk

Email: [email protected]

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Solely for the purposes of the requirements of 3.2.7R of the FCA Handbook Product Intervention and Product Governance Sourcebook (the “UK MiFIR Product Governance Rules”) regarding the mutual responsibilities of manufacturers under the UK MiFIR Product Governance Rules:

For the purposes of this provision, the expression “MiFID II” means Directive 2014/65/EU, as amended, and the expression “UK MiFIR” means Regulation (EU) No 600/2014 as it forms part of United Kingdom domestic law by virtue of the European Union (Withdrawal) Act 2018.

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For the avoidance of doubt, nothing in this Terms Agreement or any other agreements, arrangements, or understanding between the undersigned and the Bank shall operate as or be construed to constitute a waiver, renunciation or any other modification of any privilege or immunity of the Bank or its employees under the Agreement Establishing the Inter-American Development Bank, international law or other applicable law.

All notices and other communications hereunder shall be in writing and shall be transmitted in accordance with Section 10 of the Standard Provisions.

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

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This Terms Agreement may be executed by any one or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such respective counterparts together shall constitute one and the same instrument.

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