Pricing & Performance

Footnotes

¹ Small-cap and mid-cap investment options are subject to more fluctuation in value and may have additional risks than other investment options with stocks of larger, more stable companies.

² Each index based investment option is invested in the stocks or bonds of the index it tracks. Performance of indexes reflects the unmanaged results for the market segment the selected stocks or bonds represent. There is no assurance an index based investment option will match the performance of the index tracked.

³ International and global investment options are subject to additional risk due to fluctuating exchange rates, foreign accounting and financial policies, and other economic and political environments.

⁴ High yield investment options are subject to greater credit risk and volatility that is associated with high yield bonds.

⁵ Real Estate investment options are subject to investment and liquidity risk and other risks inherent in real estate such as those associated with general and local economic conditions. Property values can decline due to environmental and other reasons. In addition, fluctuation in interest rates can negatively impact the performance of real estate investment options.

⁶ S&P 500 is a trademark of S&P Global and is used under license. The product is not sponsored, endorsed, sold or promoted by Standard & Poor's and Standard & Poor's makes no representation regarding the advisability of investing in the product.

¹⁰ These calculated returns reflect the historical performance of the oldest share class of the fund, adjusted to reflect a portion of the fees and expenses of this share class. For time periods prior to inception date of the fund, predecessor performance is reflected. Please see the fund's prospectus for more information on specific expenses, and the fund's most recent shareholder report for actual date of first sale. Expenses are deducted from income earned by the fund. As a result, dividends and investment results will differ for each share class.

¹¹ Equity investment options involve greater risk, including heightened volatility, than fixed-income investment options. Fixed-income investment options are subject to interest rate risk, and their value will decline as interest rates rise.

¹² Asset allocation does not guarantee a profit or protect against a loss. Investing in real estate, small-cap, international, and high-yield investment options involves additional risks.

¹³ Fixed-income investment options are subject to interest rate risk, and their value will decline as interest rates rise. A portion of the Fund's income may be subject to state and/or local taxes, and it may be subject to federal alternative minimum tax (AMT) for certain investors.

¹⁴ Small-cap and mid-cap stocks may have additional risks, including greater price volatility.

¹⁵ 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.

¹⁶ Fixed-income and asset allocation investment options that invest in mortgage securities are subject to increased risk due to real estate exposure.

¹⁷ Instances of high double-digit returns were achieved primarily during favorable market conditions and may not be sustainable over time.

¹⁸ Fixed-income investment options are subject to interest rate risk, and their value will decline as interest rates rise. Lower-rated securities are subject to additional credit and default risks. Risks associated with preferred securities differ from risks inherent with other investments. In particular, in the event of bankruptcy, a company's preferred securities are senior to common stock but subordinated to all other types of corporate debt. International investing involves increased risks due to currency fluctuations, political or social instability, and differences in accounting standards, these risks are magnified in emerging markets. REIT securities are subject to risk factors associated with the real estate industry and tax factors of REIT registration.

¹⁹ The investment adviser may voluntarily limit a certain portion of the fund's expenses collected from the Money Market Fund on a temporary basis.

²⁰ The manager of the Fund, Principal Global Investors, invests between 10% and 40% of the Fund's assets in common stocks in an attempt to match or exceed the performance of the Fund's benchmark index for performance.

²¹ Asset allocation and diversification do not ensure a profit or protect against a loss. Additionally there is no guarantee this investment option will provide adequate income at or through retirement.

²² 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. or any other government entity. Concentrating investments in natural resources industries can be affected significantly by events relating to those industries, such as variations in the commodities markets, weather, disease, embargoes, international, political and economic developments, the success of exploration projects, tax and other government regulations and other factors. Investment in derivatives entails specific risks relating to liquidity, leverage and credit that may reduce returns and/or increase volatility. REIT securities are subject to risk factors associated with the real estate industry and tax factors of REIT registration.

²⁶ For Government High Quality Bond Fund (A) the Distributor has voluntarily agreed to waive .10% which limits the investment option's 12b-1 fees to .15%. These limits apply now but may be terminated at any time.

²⁷ This fund utilizes alternative investment strategies such as arbitrage, leverage, derivatives, and shorting securities in addition to traditional investments. Investment risk may be magnified with the use of these alternative strategies. In addition, securities such as bonds, equities, commodities, international and emerging market securities, and currencies are used to implement the investment strategy. These investments are subject to risks associated with market and interest rate movements. The fund is considered non-diversified which may make it more susceptible to price volatility if the fund does not meet its objective. Due to the nature of the investment process, investors should not expect significant outperformance during market rallies. Additional risks are included in the funds prospectus. It is possible to lose money when investing in the fund.

²⁸ The risks associated with derivative investments include that the underlying security, interest rate, market index, or other financial asset will not move in the direction the Investment Adviser and/or Sub-Advisor anticipated, the possibility that there may be no liquid secondary market, the risk that adverse price movements in an instrument can result in a loss substantially greater than a fund's initial investment, the possibility that the counterparty may fail to perform its obligations; and the inability to close out certain hedged positions to avoid adverse tax consequences.

²⁹ International and global investing involves greater risks such as currency fluctuations, political/social instability and differing accounting standards.

³⁰ You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.

³¹ Fixed-income investment options are subject to interest rate risk, and their value will decline as interest rates rise. 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. 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.

³³ Additional target date portfolios may be added to the Principal LifeTime portfolios series to accommodate plan participants with later normal retirement dates as they enter the workforce. Participants may also choose a portfolio with a target date that does not match the intended retirement date. Compare the different portfolios to see how the mix of investments might shift.

³⁴ This investment option is considered non-diversified, which means it, or the underlying mutual fund, can invest a higher percentage of its assets in of fewer individual issuers than a diversified investment. As a result, changes in the value of a single investment could cause greater fluctuations, gain or loss, in the net asset value than would occur if it was more diversified.

³⁵ Selecting a target date fund series is also authorizing any additional vintage which is launched by the investment provider for the series, and included in their associated materials, to be added to the plan after proper notification.

³⁶ There is no guarantee that a target date investment will provide adequate income at or through retirement. A target date fund's (TDF) glidepath is typically set to align with a retirement age of 65, which maybe your plan's normal retirement date (NRD). If your plan's NRD/age is different, the plan may default you to a TDF based on the plans NRD/Age. Participants may choose a TDF that does not match the plan's intended retirement date but instead aligns more to their investment risk. Compare the different TDF's to see how the mix of investments shift based on the TDF glide path.