Company: VVR
Filing Date: 2025-03-06
Form Type: POS EX
Source: 0001193125-25-048460
Chunk: 2

Company: Invesco Senior Income Trust
Filing Date: 2025-03-06
Form: POS EX
Chunk 2
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 (as defined by Rule 12b-2 under the 
 Securities Exchange Act of 1934 (“Exchange Act”)).          |

| ☐ | If an Emerging Growth Company, indicate by check mark if the registrant has elected not to use the extended                                       
 transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of Securities Act. |

| ☐ | New Registrant (registered or regulated under the Investment Company Act for less than 12 calendar months 
 preceding this filing).                                                                                   |

EXPLANATORY NOTE

This Post-Effective Amendment No. 1 to the Registration Statement on Form N-2 (File Nos. 333-283795 and 811-08743) of Invesco Senior Income Trust (the “Registration Statement”) is being filed pursuant to Rule 462(d) under the
Securities Act of 1933, as amended (the “Securities Act”), solely for the purpose of filing certain exhibits to the Registration Statement. Accordingly, this Post-Effective Amendment No. 1 consists only of a facing page, this
explanatory note, Part C of the Registration Statement and exhibits h(ii), e and s filed pursuant to Item 25 of the Registration Statement. This Post-Effective Amendment No. 1 does not modify any other part of the Registration Statement.
Pursuant to Rule 462(d) under the Securities Act, this Post-Effective Amendment No. 1 shall become effective immediately upon filing with the Securities and Exchange Commission. Parts A and B of the Registration Statement are hereby
incorporated by reference.

PART C

OTHER INFORMATION

Item 25. Financial Statements And Exhibits

(1) Contained in Part A:

Financial Highlights of the Invesco Senior Income Trust (the “Registrant”) for the last ten fiscal years and for the fiscal period ended
August 31, 2024.

Registrant’s Financial Statements for the fiscal years ended February 29, 2024, February 28, 2023, February 28,
2022, February 28, 2021 and February
29, 2020, are incorporated in Part A by reference to Registrant’s February29, 2024 Annual Report (audited) on Form N-CSR as filed with the U.S. Securities and Exchange Commission (the “SEC” or the “Commission”) via EDGAR Accession No. 0001193125-24-129417 on May