Our ETFs

Risks

1. Equity investments involve greater risk, including higher volatility, than fixed-income investment options.

2. Mid-cap stocks may have additional risks, including greater price volatility.

3. Small and mid-cap stocks may have additional risks including greater price volatility.

4. Investments concentrated in the healthcare industry may be adversely impacted by sector specific market shocks, unforeseen rate controls or regulations, higher than expected costs, or inability to bring new products to market.

5. International and global investing involves greater risks such as currency fluctuations, political/social instability and differing accounting standards.

6. Equity investment options involve greater risk, including heightened volatility, than fixed-income investment options. Fixed-income investments are subject to interest rate risk; as interest rates rise, their value will decline. Lower-rated securities are subject to additional credit and default risks. REIT securities are subject to risk factors associated with the real estate industry and tax factors of REIT registration. A master limited partnership (MLP) that invests in a particular industry (e.g., oil and gas) may be harmed by detrimental economic events within that industry. As partnerships, MLPs may be subject to less regulation (and less protection for investors) under state laws than corporations. In addition, MLPs may be subject to state taxation in certain jurisdictions, which may reduce the amount of income paid by an MLP to its investors.

7. Unlike typical ETFs, there are no indices that the Principal Active Income ETF attempts to track or replicate. Thus, the ability of the Fund to achieve its objectives will depend on the effectiveness of the portfolio manager.

8. Small-cap stocks may have additional risks including greater price volatility.

10. Risks of preferred securities differ from risks inherent in other investments. In particular, in a bankruptcy preferred securities are senior to common stock but subordinate to other corporate debt.

11. Unlike typical ETFs, there are no indices that the Principal Spectrum Preferred Securities Active ETF attempts to track or replicate. Thus, the ability of the Fund to achieve its objectives will depend on the effectiveness of the portfolio manager.

12. Equity investments involve greater risk, including heightened volatility, than fixed-income.

13. Fixed-income investments are subject to interest rate risk; as interest rates rise, their value will decline.

14. Unlike typical ETFs, there are no indices that the Principal Investment Grade Corporate Active ETF attempts to track or replicate. Thus, the ability of the Fund to achieve its objectives will depend on the effectiveness of the portfolio manager.

15. The Bloomberg Barclays U.S. Corporate Investment Grade Bond Index measures the investment grade, fixed-rate, taxable corporate bond market. It includes U.S. dollar-denominated securities publicly issued by U.S. and non-U.S. industrial, utility, and financial issuers.

16. Fixed-income investment options are subject to interest rate risk, and their value will decline as interest rates rise. Neither the principal of bond investment options nor their yields are guaranteed by the U.S. government.

17. Unlike passive ETFs, there are no indices that the Principal Ultra Short Active Income ETF attempts to track or replicate. Thus, the ability of the Fund to achieve its objectives will depend on the effectiveness of the portfolio manager.

18. Contingent capital securities (CoCos) may have substantially greater risk than other securities in times of financial stress. An issuer or regulators decision to write down, write off or convert a CoCo may result in complete loss on an investment. Real estate investment options are subject to risks associated with credit, liquidity, interest rate fluctuation, adverse general and local economic conditions, and decreases in real estate values and occupancy rates.

19. There can be no assurance as to the portion of the Fund’s distributions that will qualify for favorable federal income tax treatment. The Fund may make investments and pay dividends that are ineligible for favorable tax treatment or that otherwise do not meet the requirements for such treatment, and shareholders must satisfy certain requirements to take advantage of beneficial tax treatment.

20. Unlike passive ETFs, there are no indices that the Principal Spectrum Tax-Advantage Dividend Active ETF attempts to track or replicate. Thus, the ability of the Fund to achieve its objectives will depend on the effectiveness of the portfolio manager.

21. During 2020, the Fund experienced a significant one-time gain of approximately $1.13 per share as the result of a one-time infusion of capital by the Manager due to an operational error by a third party. If such gain had not been recognized, the total return amounts expressed herein would have been lower.

22. Effective September 30, 2020, the Principal Price Setters Index ETF was renamed to the Principal Quality ETF.

23. Effective September 30, 2020, the Principal Shareholder Yield Index ETF was renamed to the Principal Value ETF.

24. Effective September 30, 2020, the Principal U.S. Small-Cap Multi-Factor Index ETF was renamed to the Principal U.S. Small-Cap Multi-Factor ETF.

26. Effective September 30, 2020, the Principal International Multi-Factor Core Index ETF was renamed to the Principal International Multi-Factor ETF.

28. Effective September 30, 2020, the Principal U.S. Mega-Cap Multi-Factor Index ETF renamed to the Principal U.S. Mega-Cap ETF.