Exhibit 32.2

CERTIFICATION OF CO-PRINCIPAL EXECUTIVE 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 Plum Acquisition Corp. III (the “Company”) for the fiscal year ended December 31, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Annual Report”), I, Steven Handwerker, Chief Financial Officer (Principal Financial Officer) of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

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

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

Date: June 28, 2024

/s/ Steven Handwerker

Steven Handwerker

Chief Financial Officer

(Principal Financial Officer)