Invesco Senior Loan Fund (XPRTX) 424B3 Prospectus supplement

Filed pursuant to Rule 424(b)(3)

File No. 333-121061

SUPPLEMENT DATED JANUARY 18, 2024 TO THE CURRENT
STATEMENT OF ADDITIONAL INFORMATION FOR:

Invesco Senior Loan Fund

(the “Fund”)

This supplement amends the Statement of Additional Information (“SAI”) of the above referenced fund and is in addition to any other supplement(s), unless otherwise specified. You should read this supplement in conjunction with the SAI and retain it for future reference.

Effective as of January 16, 2024, shareholders of the Fund listed above elected 14 individuals as Trustees of the Fund. Ten of the 11 Trustees who currently serve on the Board — specifically, Beth Ann Brown, Cynthia Hostetler, Dr. Eli Jones, Elizabeth Krentzman, Anthony J. LaCava, Jr., Dr. Prema Mathai-Davis, Joel W. Motley, Teresa M. Ressel, Robert C. Troccoli and Daniel S. Vandivort — were elected along with new nominees, Carol Deckbar and James “Jim” Liddy. The foregoing 12 Trustees will serve or continue to serve as Independent Trustees. Jeffrey H. Kupor and Douglas Sharp were also new nominees elected by shareholders of the Fund and will serve as interested Trustees. Martin Flanagan, who has served as an interested Trustee, will retire effective immediately.

The following information replaces information in the table under “Management of the Fund - Trustees and Officers – Interested Trustee” in the SAI for the Fund.

Interested Trustees 

Name, Year of Birth	Position(s) Held with the Trust	Trustee and/or Officer Since	Principal Occupation(s) During Past 5 Years	Number of Funds in Fund Complex Overseen by Trustee	Other Trusteeship(s)/ Directorship Held by Trustee/Director During Past 5 Years
Jeffrey H. Kupor(1) – 1968	Trustee	2024	Senior Managing Director and General Counsel, Invesco Ltd.; Trustee, Invesco Foundation, Inc.; Director, Invesco Advisers, Inc.; Executive Vice President, Invesco Asset Management (Bermuda), Ltd. and Invesco Investments (Bermuda) Ltd.   Formerly: Head of Legal of the Americas, Invesco Ltd.; Senior Vice President and Secretary, Invesco Advisers, Inc. (formerly known as Invesco Institutional (N.A.), Inc.) (registered investment adviser); Secretary, Invesco Distributors, Inc. (formerly known as Invesco AIM Distributors, Inc.); Vice President and Secretary, Invesco Investment Services, Inc. (formerly known as Invesco AIM Investment Services, Inc.); Senior Vice President, Chief Legal Officer and Secretary, The Invesco Funds; Secretary and General Counsel, Invesco Investment Advisers LLC (formerly known as Van Kampen Asset Management); Secretary and General Counsel, Invesco Capital Markets, Inc. (formerly known as Van Kampen Funds Inc.) and Chief Legal Officer, Invesco Exchange-Traded Fund Trust, Invesco Exchange-Traded Fund Trust II, Invesco India Exchange-Traded Fund Trust, Invesco Actively Managed Exchange-Traded Fund Trust,	165	None

VK-SLO-SOAI-SUP 011824

Name, Year of Birth	Position(s) Held with the Trust	Trustee and/or Officer Since	Principal Occupation(s) During Past 5 Years	Number of Funds in Fund Complex Overseen by Trustee	Other Trusteeship(s)/ Directorship Held by Trustee/Director During Past 5 Years
			Invesco Actively Managed Exchange-Traded Commodity Fund Trust and Invesco Exchange-Traded Self-Indexed Fund Trust; Secretary and Vice President, Harbourview Asset Management Corporation; Secretary and Vice President, OppenheimerFunds, Inc. and Invesco Managed Accounts, LLC; Secretary and Senior Vice President, OFI Global Institutional, Inc.; Secretary and Vice President, OFI SteelPath, Inc.; Secretary and Vice President, Oppenheimer Acquisition Corp.; Secretary and Vice President, Shareholder Services, Inc.; Secretary and Vice President, Trinity Investment Management Corporation, Senior Vice President, Invesco Distributors, Inc.; Secretary and Vice President, Jemstep, Inc.; Head of Legal, Worldwide Institutional, Invesco Ltd.; Secretary and General Counsel, INVESCO Private Capital Investments, Inc.; Senior Vice President, Secretary and General Counsel, Invesco Management Group, Inc. (formerly known as Invesco AIM Management Group, Inc.); Assistant Secretary, INVESCO Asset Management (Bermuda) Ltd.; Secretary and General Counsel, Invesco Private Capital, Inc.; Assistant Secretary and General Counsel, INVESCO Realty, Inc.; Secretary and General Counsel, Invesco Senior Secured Management, Inc.; Secretary, Sovereign G./P. Holdings Inc.; Secretary, Invesco Indexing LLC; and Secretary, W.L. Ross & Co., LLC
Douglas Sharp(1) – 1974	Trustee	2024	Senior Managing Director and Head of Americas & EMEA, Invesco Ltd; Director, Chairman and Chief Executive, Invesco Fund Managers Limited   Formerly: Director and Chairman, Invesco UK Limited	165	None

(1)Mr. Kupor and Mr. Sharp are considered interested persons (within the meaning of the Section 2(a)(19) of the 1940 Act) of the Funds because they are officers of the Adviser, and officers of Invesco Ltd., the ultimate parent of the Adviser.

The following information is added in the table under “Management of the Fund - Trustees and Officers – Independent Trustees” in the SAI for the Fund. 

Name, Year of Birth	Position(s) Held with the Trust	Trustee and/or Officer Since	Principal Occupation(s) During Past 5 Years	Number of Funds in Fund Complex Overseen by Trustee	Other Trusteeship(s)/ Directorship Held by Trustee/Director During Past 5 Years
Carol Deckbar – 1962	Trustee	2024	Formerly: Executive Vice President and Chief Product Officer, TIAA Financial Services; Executive Vice President and Principal, College Retirement Equities Fund at TIAA;	165	Formerly: Board Member, TIAA Asset Management, Inc.; and Board Member, TH Real Estate Group Holdings Company

VK-SLO-SOAI-SUP 011824

Name, Year of Birth	Position(s) Held with the Trust	Trustee and/or Officer Since	Principal Occupation(s) During Past 5 Years	Number of Funds in Fund Complex Overseen by Trustee	Other Trusteeship(s)/ Directorship Held by Trustee/Director During Past 5 Years
			Executive Vice President and Head of Institutional Investments and Endowment Services, TIAA
James “Jim” Liddy – 1959	Trustee	2024	Formerly: Chairman, Global Financial Services, Americas, KPMG LLP	165	Director and Treasurer, Gulfside Place Condominium Association, Inc. and Non-Executive Director, Kellenberg Memorial High School

The following information replaces the information under “Management of the Fund – Trustees and Officers – Board of Trustees - Interested Trustee” in the SAI for the Fund.

Interested Trustees

Jeffrey H. Kupor, Trustee

Jeffrey Kupor has been a member of the Board of Trustees of the Invesco Funds since 2024. Mr. Kupor is Senior Managing Director and General Counsel at Invesco Ltd.

Mr. Kupor joined Invesco Ltd. in 2002 and has held a number of legal roles, including, most recently, Head of Legal, Americas, in which role he was responsible for legal support for Invesco's Americas business. Prior to joining the firm, he practiced law at Fulbright & Jaworski LLP (now known as Norton Rose Fulbright), specializing in complex commercial and securities litigation. He also served as the general counsel of a publicly traded communication services company.

Mr. Kupor earned a BS degree in economics from the Wharton School at the University of Pennsylvania and a JD from the Boalt Hall School of Law (now known as Berkeley Law) at the University of California at Berkeley.

The Board believes that Mr. Kupor’s current and past positions with the Invesco complex along with his legal background and experience as an executive in the investment management area benefits the Funds.

Douglas Sharp, Trustee

Douglas Sharp has been a member of the Board of Trustees of the Invesco Funds since 2024. Mr. Sharp is Senior Managing Director, Head of Americas & EMEA (Europe, the Middle East, and Africa) at Invesco Ltd. He also served as Director and Chairman of the Board of Invesco UK Limited (Invesco’s European subsidiary board).

Mr. Sharp joined Invesco Ltd. in 2008 and has served in multiple leadership roles across the company, including his previous role as Head of EMEA. Prior to that, he ran Invesco Ltd.’s EMEA retail business and served as head of strategy and business planning and as chief administrative officer for Invesco Ltd.’s US institutional business. Before joining the firm, he was with the strategy consulting firm McKinsey & Co., where he served clients in the financial services, energy, and logistics sectors.

The Board believes that Mr. Sharp’s current and past positions within the Invesco complex along with his experience in the investment management business benefits the Funds.

The following information is added under “Management of the Fund – Trustees and Officers – Board of Trustees – Independent Trustees” in the SAI for the Fund.

Carol Deckbar, Trustee

Carol Deckbar has been a member of the Board of Trustees of the Invesco Funds since 2024. Ms. Deckbar previously served as Executive Vice President and Chief Product Officer at Teachers Insurance and Annuity Association (TIAA) Financial Services from 2019 to 2021. She also served as Executive Vice President and Principal of College Retirement Equities Fund at TIAA from 2014 to 2021. Ms. Deckbar served in various other capacities at TIAA since joining in 2007, including Executive Vice President and Head of Institutional Investments and Endowment Services from 2016 to 2019.

Prior to joining TIAA, Ms. Deckbar was a Senior Vice President of AMSOUTH Bank from 2002 to 2006, and before that she served as Senior Vice President, Managing Director, for Bank of America Capital Management from 1999 to 2002. She began her asset management career with the Evergreen Funds where she served as Senior Vice President, Managing Director from 1991 to 1998.

VK-SLO-SOAI-SUP 011824

From 2019 to 2020, Ms. Deckbar served as Chairman of the TIAA Retirement Plan Investments Committee and as an Executive Sponsor at Advance, a council for the advancement of women. She has also held various memberships, including at Investment Company Institute, from 2017 to 2019, Fortune 400 Most Powerful Women Network, from 2012 to 2015, and Mutual Fund Education Alliance, from 2010 to 2015.

The Board believes that Ms. Deckbar’s experience in financial services and investment management benefits the Funds.

James “Jim” Liddy, Trustee

James “Jim” Liddy has been a member of the Board of Trustees of the Invesco Funds since 2024. Mr. Liddy previously served as Chairman of KPMG LLP (KPMG)’s Global Financial Services practice from 2017 through 2021. He also led KPMG’s U.S. Financial Services practice from 2015 through 2021.

Prior to assuming his most recent role in 2017, Mr. Liddy served as Vice Chair of Audit and on various other committees at KPMG. He also previously served as National Managing Partner of Audit and was a member of the firm’s Global Audit Steering Group.

The Board believes that Mr. Liddy’s audit experience and knowledge of financial services and investment management benefits the Funds.

VK-SLO-SOAI-SUP 011824