The following dates have been suggested to serve as Record and Ex-dividend/Payable dates for the Thornburg Value, Thornburg International Value, Thornburg Better World International, Thornburg Core Growth, Thornburg Global Opportunities, Thornburg International Growth, Thornburg Developing World and Thornburg Long/Short Equity Funds' income and capital gains distributions for the 2018 calendar year:

Type of Distribution: Record Date*: Ex-Dividend/Payable Date*:
Fiscal Year 2018 Capital Gain Distribution
November 14, 2018 November 15, 2018
Fiscal Year 2018 Income Distribution December 20, 2018 December 21, 2018

The Thornburg Investment Income Builder Fund distributes its income daily with a daily accrual factor and pays quarterly on the below dates:

Type of Distribution:   Payable/Reinvest Date*:
First Quarter 2018 Income Dividend   March 23, 2018
Second Quarter 2018 Income Dividend   June 22, 2018
Third Quarter 2018 Income Dividend   September 21, 2018
Fourth Quarter 2018 Income Dividend   December 26, 2018

The following dates have been suggested to serve as Record and Ex-dividend/Payable dates for the Thornburg Investment Income Builder Fund capital gains distributions for the 2018 calendar year:

Type of Distribution: Record Date*: Ex-Dividend/Payable Date*:
Fiscal Year 2018 Capital Gain Distribution
November 14, 2018 November 15, 2018

* Please note that these dates are tentative and subject to change.

Important Information
Before investing, carefully consider the Fund’s investment goals, risks, charges, and expenses. For a prospectus or summary prospectus containing this and other information, contact your financial advisor or visit thornburg.com. Read them carefully before investing.

Investments carry risks, including possible loss of principal. Additional risks may be associated with investments outside the United States, especially in emerging markets, including currency fluctuations, illiquidity, volatility, and political and economic risks. Investments in small- and mid-capitalization companies may increase the risk of greater price fluctuations. Portfolios investing in bonds have the same interest rate, inflation, and credit risks that are associated with the underlying bonds. The value of bonds will fluctuate relative to changes in interest rates, decreasing when interest rates rise. Investments in the Funds are not FDIC insured, nor are they bank deposits or guaranteed by a bank or any other entity.

Thornburg mutual funds are distributed by Thornburg Securities Corporation.

Thornburg Investment Management, Inc. mutual funds are sold through investment professionals including investment advisors, brokerage firms, bank trust departments, trust companies and certain other financial intermediaries. Thornburg Securities Corporation (TSC) does not act as broker of record for investors.