Invesco Unit Trusts Taxable Income Series 640: 485BPOS filed Dec 22, 2025

Name: Invesco Unit Trusts Taxable Income Series 640 485BPOS (0001528621-25-001349)
Creator: Invesco Unit Trusts Taxable Income Series 640
Published: 2025-12-22

Form type: 485BPOS
Filing date: Dec 22, 2025
Accession number: 0001528621-25-001349
Filer: Invesco Unit Trusts Taxable Income Series 640 (CIK 1686060)