The following ordinary income distribution dates have been suggested to serve as Record and Payable dates for the Thornburg Value, Thornburg International Value, Thornburg Core Growth, Thornburg Investment Income Builder, Thornburg Global Opportunities, Thornburg International Growth, and Thornburg Developing World Funds, and capital gains distributions for all applicable Thornburg Funds for the 2012 calendar year.
| Type of Distribution: | Record Date*: | Payable/Reinvest Date*: |
| First Quarter 2012 Income Dividend | March 23, 2012 | March 26, 2012 |
| Second Quarter 2012 Income Dividend | June 22, 2012 | June 25, 2012 |
| Third Quarter 2012 Income Dividend | September 21, 2012 | September 24, 2012 |
| Fiscal Year 2012 Capital Gain Distribution (If Applicable) |
November 19, 2012 | November 20, 2012 |
| Fourth Quarter 2012 Income Dividend | December 21, 2012 | December 24, 2012 |
* Please note that these dates are tentative and subject to change.
The Thornburg Investment Income Builder Fund goes Ex-Dividend with a daily accrual every day and pays quarterly on the above quarterly income dates.
The Thornburg Strategic Income Fund will have a dividend payable date on January 31, 2012 and then will change to a monthly dividend payable date beginning on February 1, 2012. From that date on, the Fund will follow the same schedule of payable dates as the other Thornburg Bond Funds.
Investments in the Funds carry risks, including possible loss of principal. Investing outside the United States, especially in emerging markets, entails special risks, such as currency fluctuations, illiquidity, and volatility. Investments in small capitalization companies may increase the risk of greater price fluctuations. Funds investing in bonds have the same interest rate, inflation, and credit risks that are associated with the underlying bonds. The principal value of bonds will fluctuate relative to changes in interest rates, decreasing when interest rates rise. This effect is more pronounced for longer-term bonds. Unlike bonds, bond funds have ongoing fees and expenses. Funds invested in mortgage backed securities may bear additional risk. Investments in lower rated and unrated bonds may be more sensitive to default, downgrades, and market volatility; these investments may also be less liquid than higher rated bonds. Investments in derivatives are subject to the risks associated with the securities or other assets underlying the pool of securities, including illiquidity and difficulty in valuation. Investments in the Funds are not FDIC insured, nor are they deposits of or guaranteed by a bank or any other entity.
Before investing, carefully consider the Fund’s investment goals, risks, charges, and expenses. For a prospectus containing this and other information, contact your financial advisor or visit our literature library. Read it carefully before investing.

