X0609 4 2026-07-29 0002097545 AMG BBH Asset-Backed Credit Fund, LLC BBASX 0002102651 BROWN BROTHERS HARRIMAN CREDIT PARTNERS, LLC false 140 BROADWAY NEW YORK NY 10005 true true See Footnote (1) 0000014661 BROWN BROTHERS HARRIMAN & CO false 140 BROADWAY NEW YORK NY 10005 true true See Footnote (1) false Class S units of beneficial interest 2026-07-29 4 P 0 20464.956 10.9622 A 390440.515 D Brown Brothers Harriman Credit Partners, LLC ("Credit Partners") serves as the investment adviser to the Issuer. Brown Brothers Harriman & Co. ("BBH") is the majority owner of Credit Partners. As a result, BBH may be deemed to beneficially own the securities directly owned by Credit Partners. The securities reported herein do not include securities held for the accounts of certain discretionary client accounts for which BBH serves as a fiduciary and in which BBH has no pecuniary interest. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that either of the Reporting Persons is the beneficial owner of any such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. BROWN BROTHERS HARRIMAN CREDIT PARTNERS, LLC /s/ Paul Gallagher By: Paul Gallagher, Managing Director, Compliance 2026-07-31 BROWN BROTHERS HARRIMAN & CO /s/ Paul Gallagher By: Paul Gallagher, Chief Compliance Officer 2026-07-31