Apollo Debt Solutions BDC

Item 1.01. Entry into a Material Definitive Agreement. On June 30, 2026, Apollo Debt Solutions BDC (the “ Fund ”) and U.S. Bank Trust Company, National Association (the “ Trustee ”) entered into a Seventh Supplemental Indenture (the “ Seventh Supplemental Indenture ” and, together with the Base Indenture (defined herein), the “ Indenture ”) related to the $ 750,000,000 in aggregate principal amount of its 6.350% notes due 2033 ( the “ Notes ” ), which supplements that certain Base Indenture, dated as of March 21, 2024 (as may be further amended, supplemented or otherwise modified from time to time, the “ Base Indenture ”). The Notes will mature on June 30, 2033 and may be redeemed in whole or in part at the Fund’s option at any time or from time to time at the redemption prices set forth in the Indenture. The Notes bear interest at a rate of 6.350% per year payable semi-annually on June 30 and December 30 of each year, commencing on December 30, 2026. The Notes are general unsecured obligations of the Fund that rank senior in right of payment to all of the Fund’s existing and future indebtedness that is expressly subordinated in right of payment to the Notes, rank pari passu with all existing and future unsecured unsubordinated indebtedness issued by the Fund, rank effectively junior to any of the Fund’s secured indebtedness (including unsecured indebtedness that the Fund later secures) to the extent of the value of the assets securing such indebtedness, and rank structurally junior to all existing and future indebtedness (including trade payables) incurred by the Fund’s subsidiaries, financing vehicles or similar facilities. The Indenture contains certain covenants, including covenants requiring the Fund to comply with the asset coverage requirements of Section 18(a)(1)(A) as modified by Section 61(a)(1) and (2) of the Investment Company Act of 1940, as amended, whether or not it is subject to those requirements, and to provide financial information to the holders of the Notes and to the Trustee if the Fund is no longer subject to the reporting requirements under the Securities Exchange Act of 1934, as amended. These covenants are subject to important limitations and exceptions that are described in the Indenture. In addition, on the occurrence of a “Change of Control Repurchase Event,” as defined in the Indenture, the Fund will generally be required to make an offer to purchase the outstanding Notes at a price equal to 100% of the principal amount of such Notes plus accrued and unpaid interest to, but not including, the repurchase date. The foregoing description of the Indenture does not purport to be complete and is qualified in its entirety by reference to the full text of the Indenture, filed as an exhibit hereto and incorporated by reference herein. The Notes were offered to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “ Securities Act ” and such offering, the “ Notes Offering ”). The Notes have not been registered under the Securities Act or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from such registration requirements. The Notes Offering closed on June 30, 2026. The net proceeds to the Fund were approximately $736.7 million, after deducting the initial purchaser discount and estimated offering expenses. The Fund expects to use the net proceeds of the Notes Offering for general corporate purposes of it and its subsidiaries and/or to repay indebtedness, including under the Fund’s revolving credit facility. Registration Rights Agreement In connection with the Notes Offering, the Fund entered into a Registration Rights Agreement, dated as of June 30, 2026 (the “ Registration Rights Agreement ”), with BNP Paribas Securities Corp., as the representative of the Initial Purchasers of the Notes. Pursuant to the Registration Rights Agreement, the Fund is obligated to file with the U.S. Securities and Exchange Commission a registration statement relating to an offer to exchange the Notes for new notes issued by the Fund that are registered under the Securities Act and otherwise have terms substantially identical to those of the Notes, and to use its commercially reasonable efforts to cause such registration statement to be declared effective. If the Fund is not able to effect the exchange offer, the Fund will be obligated to file a shelf registration statement covering the resale of the Notes and use its commercially reasonable efforts to cause such registration statement to be declared effective. If the Fund fails to satisfy its registration obligations by certain dates specified in the Registration Rights Agreement, it will be required to pay additional interest to the holders of the Notes. The foregoing description of the Registration Rights Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Registration Rights Agreement, filed as an exhibit hereto and incorporated by reference herein. Terms used in the foregoing paragraphs have the meanings set forth in the Registration Rights Agreement.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Off-Balance The information required by Item 2.03 contained in Item 1.01 of this Current Report on Form 8-K is incorporated herein by reference.