Invesco Unit Trusts Taxable Income Series 640: 24F-2NT filed Sep 24, 2025

Name: Invesco Unit Trusts Taxable Income Series 640 24F-2NT (0001528621-25-000992)
Creator: Invesco Unit Trusts Taxable Income Series 640
Published: 2025-09-24

Form type: 24F-2NT
Filing date: Sep 24, 2025
Accession number: 0001528621-25-000992
Filer: Invesco Unit Trusts Taxable Income Series 640 (CIK 1686060)