Filed Pursuant to Rule 424(b)(3)

Registration No. 333-286709

ARES STRATEGIC INCOME FUND

SUPPLEMENT NO. 29 DATED APRIL 10, 2026

TO THE PROSPECTUS DATED APRIL 23, 2025

This prospectus supplement ("Supplement") contains information that amends, supplements or modifies certain information contained in the accompanying prospectus of Ares Strategic Income Fund (the "Fund"), dated April 23, 2025 (as amended and supplemented to date, the "Prospectus"). This Supplement is part of and should be read in conjunction with the Prospectus. Unless otherwise indicated, all other information included in the Prospectus, or any previous supplements thereto, that is not inconsistent with the information set forth in this Supplement remains unchanged. Unless otherwise defined herein, capitalized terms used in this Supplement shall have the same meanings as in the Prospectus.

Effective immediately, the Prospectus is updated to revise certain disclosures in the Prospectus as set forth below.

Pursuant to Rule 429 under the Securities Act of 1933, as amended, the Prospectus included herein is a combined prospectus that relates to (i) the Registration Statement (File No. 333-264145), dated April 5, 2022, as amended, previously filed by the Fund on Form N-2 (the "Prior Registration Statement") and (ii) the Registration Statement (File No. 333-286709), dated April 23, 2025, as amended, previously filed by the Fund on Form N-2. This Supplement also constitutes a supplement to the Prior Registration Statement.

Update to Suitability Standards

The first paragraph under "Suitability Standards" on page ii of the Prospectus is deleted in its entirety and replaced with the following:

New Jersey Investors. New Jersey investors must have either (a) a minimum liquid net worth of at least $100,000 and a minimum annual gross income of not less than $100,000, or (b) a minimum liquid net worth of $350,000. For these purposes, "liquid net worth" is defined as that portion of net worth (total assets exclusive of home, home furnishings, and automobiles, minus total liabilities) that consists of cash, cash equivalents and readily marketable securities. In addition, a New Jersey investor's investment in us, our affiliates, and other non-publicly traded direct investment programs (including real estate investment trusts, business development companies, oil and gas programs, equipment leasing programs, and commodity pools (each, a "DIP Category"), but excluding unregistered, federally and state exempt private offerings) may not exceed ten percent (10%) of an investor's liquid net worth. However, New Jersey investors who are accredited investors, as defined at N.J.S.A. 49:3-49(p), may not invest more than ten percent (10%) of their liquid net worth in each DIP Category.

Sub-section (k) of section 11.C under "Subscription Agreement" on page A-10 of the Prospectus and sub-section (k) of section 11.C under "Subscription Agreement - RIAs" on page A-26 of the Prospectus are each deleted in their entirety and replaced with the following:

If I am a New Jersey investor, I must have either (a) a minimum liquid net worth of at least $100,000 and a minimum annual gross income of not less than $100,000, or (b) a minimum liquid net worth of $350,000. For these purposes, "liquid net worth" is defined as that portion of net worth (total assets exclusive of home, home furnishings, and automobiles, minus total liabilities) that consists of cash, cash equivalents and readily marketable securities. In addition, I acknowledge that if I am not an accredited investor, as defined at N.J.S.A. 49:3-49(p), my investment in Ares Strategic Income Fund, its affiliates, and other non-publicly traded direct investment programs (including real estate investment trusts, business development companies, oil and gas programs, equipment leasing programs, and commodity pools (each, a "DIP Category"), but excluding unregistered, federally and state exempt private offerings) may not exceed ten percent (10%) of my liquid net worth. If I am an accredited investor, as defined at N.J.S.A. 49:3-49(p), I acknowledge that I may not invest more than ten percent (10%) of my liquid net worth in each DIP Category.

Please retain this Supplement with your Prospectus.