Plum Acquisition Corp. III, trading under the ticker PLMUF, is a blank-check company and the third SPAC vehicle in the Plum sponsor series. The company filed a Form 425 with the SEC on April 15, 2026, accession number 0001213900-26-043806, a form type associated with communications related to a proposed business combination transaction. Form 425 filings indicate that a definitive or preliminary merger agreement is in active disclosure, placing the vehicle in the combination phase of its lifecycle. As the third iteration of its sponsor's SPAC program, Plum Acquisition Corp. III reflects continued activity from the Plum sponsor family in the blank-check market. Sign up at SpacDesk for full filing history, deal timelines, and sponsor-level analytics on Plum Acquisition Corp. III.