Exhibit 15.9

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the inclusion in this Shell Company Report on Form 20-F of our report dated April 1, 2026 with respect to the financial statements of Plum Acquisition Corp. III included in this Form 20-F. We also consent to the reference to us under the heading “Statement by Experts” in such Shell Company Report.

/s/ Marcum LLP

Houston, Texas

August 12, 2026