Exhibit 32.2

Certification of Chief Financial Officer
Pursuant to
18 U.S.C. Section 1350 as Adopted Pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report on Form 10-K of Lord Abbett Private Credit Fund S(the “Company”) for the year ended December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Salvatore Dona, as Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

The information contained in the Report fairly presents, in all material respects, the ﬁnancial condition and results of operations of the Company.

Date: March 20, 2026

	By:	/s/ Salvatore Dona
		Salvatore Dona
		Chief Financial Officer and Treasurer
		(Principal Financial Officer)

Lord Abbett Private Credit Fund S 10-K