Invesco-SLO-SAI-SUP-1

Statement of Additional Information Supplement dated March 17, 2020

Invesco Senior Loan Fund

The purpose of this supplement is to provide you with changes to the current Statement of Additional Information for Invesco Senior Loan Fund.

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

The following information is added immediately after the section titled “Temporary Defensive Strategies” appearing under the heading “Investment Objective, Investment Strategies and Risks” in the Statement of Additional Information:

Natural Disaster/Epidemic Risk

Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and can be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Funds’ investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. These disruptions could prevent the Funds from executing advantageous investment decisions in a timely manner and negatively impact the Funds’ ability to achieve their investment objectives. Any such event(s) could have a significant adverse impact on the value and risk profile of the Funds.

Invesco-SLO-SAI-SUP-1