MATSON MONEY FIXED INCOME VI PORTFOLIO OF THE RBB FUND, INC.	FMVFX
SUMMARY PROSPECTUS

December 31, 2023

Before you invest, you may want to review the Portfolio’s Prospectus, which contains more information about the Portfolio and its risks. You can find the Portfolio’s Prospectus, Statement of Additional Information (“SAI”), reports to shareholders and other information about the Portfolio at https://funddocs.filepoint.com/matsonmoney/. You can also get this information at no cost by calling 1-866-780-0357 Ext. 3863 or by sending an e-mail request to FreeMarketFunds@matsonmoney.com. The Portfolio’s Prospectus dated December 31, 2023 and the Portfolio’s SAI, dated December 31, 2023, are incorporated by reference into this Summary Prospectus.

Investment Objective

The Matson Money Fixed Income VI Portfolio (for this section only, the “Portfolio”) seeks total return (consisting of current income and capital appreciation).

Expenses and Fees

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Portfolio. This table does not reflect the fees and expenses associated with any variable annuity contract or variable life insurance policy that uses the Portfolio as an investment option. Had those fees and expenses been included, overall fees and expenses would be higher.

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees	0.50%
Distribution and/or Service (12b-1) Fees	None
Other Expenses	0.24%
Acquired Fund Fees and Expenses(1)	0.12%
Total Annual Portfolio Operating Expenses	0.86%

(1) Acquired Fund Fees and Expenses are indirect fees and expenses that the Portfolio incurs from investing in the shares of other mutual funds, including money market funds and exchange traded funds. Please note that the amount of Total Annual Fund Operating Expenses shown in the above table will differ from the “Financial Highlights” section of the Prospectus, which reflects the operating expenses of the Portfolio and does not include indirect expenses such as Acquired Fund Fees and Expenses.

Example

This Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. This Example does not reflect the fees and expenses associated with any variable annuity contract or variable life insurance policy that uses the Portfolio as an investment option. Had those fees and expenses been included, the costs shown below would be higher.

The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and that you hold or sell your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio’s operating expenses remain the same. Although your actual costs and returns might be higher or lower, based on these assumptions your costs would be:

1 Year	3 Years	5 Years	10 Years
$88	$274	$477	$1,061

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Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). These costs, which are not reflected in Total Annual Portfolio Operating Expenses or in the Example, affect the Portfolio’s performance. During the fiscal year ended August 31, 2023, the Portfolio’s portfolio turnover rate was 8% of the average value of its portfolio.

Summary of Principal Investment Strategies

The Portfolio pursues its investment objective by investing under normal circumstances at least 80% of its net assets, including any borrowings for investment purposes, in shares of registered, open-end investment companies and exchange-traded funds (“ETFs”) (collectively, “investment companies”) that have either adopted policies to invest at least 80% of their assets in fixed income securities that the Portfolio’s Adviser believes offer the prospect of providing total return, or invest substantially all of their assets in such fixed income securities. The purchase of shares of investment companies may result in duplication of expenses, including advisory fees, in addition to the Portfolio’s own expenses.

Under normal market conditions, the Adviser expects substantially all of the Portfolio’s net assets to be invested in the securities of investment companies, including other investment companies funded by insurance company separate accounts, that invest in the types of securities described in each asset class below, with less than 2% of the net assets invested in cash or money market instruments.

One-Year Fixed Income Asset Class: The underlying investment companies generally will purchase U.S. government obligations, U.S. government agency obligations, dollar-denominated obligations of foreign issuers issued in the U.S., securities of domestic or foreign issuers denominated in U.S. dollars but not trading in the U.S., foreign government and agency obligations, bank obligations, including the obligations of U.S. subsidiaries and branches of foreign banks, corporate obligations, commercial paper, repurchase agreements, and obligations of supranational organizations such as the World Bank, the European Investment Bank and the Inter-American Development Bank. Generally, obligations comprising this asset class will mature within one year from the date of settlement, but substantial investments may be made in obligations maturing within two years from the date of settlement when greater returns are available.

Two-Year Global Fixed Income Asset Class: The underlying investment companies generally will purchase obligations issued or guaranteed by the U.S. and foreign governments, their agencies and instrumentalities, corporate debt obligations, bank obligations, commercial paper, repurchase agreements, and other debt obligations of domestic and foreign issuers with maturities of no more than two years. In making purchase decisions, if the expected term premium is greater for longer-term securities in the eligible maturity range, the underlying investment adviser(s) will focus investment in the longer-term area, otherwise, the underlying investment companies will focus investment in the shorter-term area of the eligible maturity range. Because many of the investments of the underlying investment companies in this asset class will be denominated in foreign currencies, the underlying investment companies may also enter into foreign currency forward contracts to attempt to protect against uncertainty in the level of future foreign currency rates, to hedge against fluctuations in currency exchange rates or to transfer balances from one currency to another.

Intermediate Government Fixed Income Asset Class: The underlying investment companies generally will purchase debt obligations of the U.S. government and U.S. government agencies. Generally, investment companies in the asset class will purchase securities with maturities of between five and fifteen years, however such investment companies ordinarily will have an average weighted maturity of between three and ten years. The underlying investment companies may invest a portion of their assets in the obligations of foreign governments. Those obligations at the time of purchase must be either rated in the highest rating category of a nationally recognized statistical rating organization or, in the case of any obligation that is unrated, of comparable quality.

Five-Year Global Fixed Income Asset Class: The underlying investment companies generally will purchase obligations issued or guaranteed by the U.S. and foreign governments, their agencies and instrumentalities, corporate debt obligations, bank obligations, commercial paper, repurchase agreements, obligations of other domestic and foreign issuers, securities of domestic or foreign issuers denominated in U.S. dollars but not trading in the United States, and obligations of supranational organizations. Generally, obligations comprising this asset class have a weighted average maturity not exceeding five years. In making purchase decisions, if the expected term premium is greater for

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longer-term securities in the eligible maturity range, the underlying investment adviser(s) will focus investment in the longer-term area, otherwise, the underlying investment companies will focus investment in the shorter-term area of the eligible maturity range. Because many of the investments of the underlying investment companies in this asset class will be denominated in foreign currencies, the underlying investment companies may also enter into foreign currency forward contracts to attempt to protect against uncertainty in the level of future foreign currency rates, to hedge against fluctuations in currency exchange rates or to transfer balances from one currency to another.

Short-Term Corporate Bond Asset Class: The underlying investment companies generally will track the investment results of the ICE BofAML 1-5 Year US Corporate Index, which measures the performance of investment-grade corporate bonds of both U.S. and non- U.S. issuers that are U.S. dollar denominated and publicly issued in the U.S. domestic market and have a remaining maturity of greater than or equal to one year and less than five years.

Intermediate-Term Corporate Bond Asset Class: The underlying investment companies generally will track the investment results of the ICE BofAML 5-10 Year US Corporate Index, which measures the performance of investment-grade corporate bonds of both U.S. and non-U.S. issuers that are U.S. dollar denominated and publicly issued in the U.S. domestic market and have a remaining maturity of greater than or equal to five years and less than ten years.

Inflation Protected Securities Asset Class: The underlying investment companies generally will track the investment results of the Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) Index (Series-L), which measures the performance of the inflation-protected public obligations of the U.S. Treasury, commonly known as “TIPS.” TIPS are securities issued by the U.S. Treasury that are designed to provide inflation protection to investors. TIPS are income-generating instruments whose interest and principal payments are adjusted for inflation - a sustained increase in prices that erodes the purchasing power of money. The inflation adjustment, which is typically applied monthly to the principal of the bond, follows a designated inflation index, the consumer price index (“CPI”), and TIPS’ principal payments are adjusted according to changes in the CPI. A fixed coupon rate is applied to the inflation-adjusted principal so that as inflation rises, both the principal value and the interest payments increase.

The underlying investment companies may also use derivatives, such as futures contracts and options on futures contracts for equity securities and indices, to hedge currency exposure or to adjust market exposure based on actual or expected cash inflows or outflows from the underlying investment company. Underlying index-based ETFs may use derivatives, including futures contracts, options on futures contracts, forward currency contracts, options and swaps to help the ETF track its underlying index.

Certain underlying investment companies may concentrate their investments (invest more than 25% of its total assets) in obligations of U.S. and foreign banks and bank holding companies when the yield to maturity on eligible portfolio investments in banking securities as a group generally exceeds the yield to maturity on all other eligible portfolio investments as a group generally for a period of five consecutive days when the New York Stock Exchange (“NYSE”) is open for trading. While the Portfolio will not concentrate its investments in any one industry, the Portfolio may be focused on banking sectors under certain circumstances.

The Portfolio reserves the right to hold up to 100% of its assets as a temporary defensive measure in cash and money market instruments such as U.S. government securities, bank obligations and commercial paper. To the extent the Portfolio employs a temporary defensive measure, the Portfolio may not achieve its investment objective. Periodically the Adviser will review the allocations for the Portfolio in each underlying investment company and may add or remove underlying investment companies and/or change the investment allocation percentages of the Portfolio in the underlying investment companies without notice to shareholders or the holders of the variable annuity or variable life insurance policies.

Summary of Principal Risks

Risk is inherent in all investing. The value of your investment in the Portfolio, as well as the amount of return you receive on your investment, may fluctuate significantly from day to day and over time. You may lose part or all of your investment in the Portfolio or your investment may not perform as well as other similar investments. Each risk summarized below is considered a “principal risk” of investing in the Portfolio, regardless of the order in which it appears. Different risks may be more significant at different times depending on market conditions or other factors.

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● Fixed income securities in which the Portfolio’s underlying investment companies may invest are subject to certain risks, including: interest rate risk, reinvestment risk, prepayment and extension risk, credit/default risk, and the risks associated with investing in repurchase agreements.

● Interest rate risk involves the risk that prices of fixed income securities will rise and fall in response to interest rate changes.

● Reinvestment risk involves the risk that proceeds from matured investments may be re-invested at lower interest rates.

● Prepayment risk involves the risk that in declining interest rates environments prepayments of principal could increase and require the Portfolio to reinvest proceeds of the prepayments at lower interest rates.

● Extension risk involves the risk that prepayments of principal will decrease when interest rates rise resulting in a longer effective maturity of a security.

● Credit risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal when due. Credit risk also involves the risk that the credit rating of a security may be lowered.

● Repurchase agreement risk involves the risk that the other party to a repurchase agreement will be unable to complete the transaction and the underlying investment company in which the Portfolio invests may suffer a loss as a result.

● Because the Portfolio owns shares of underlying investment companies that invest in foreign issuers, the Portfolio is subject to risks presented by investments in such issuers. Securities of foreign issuers may be negatively affected by political events, economic conditions, or inefficient, illiquid or unregulated markets in foreign countries. Foreign issuers may be subject to inadequate regulatory or accounting standards. In addition, foreign securities in which the underlying investment companies invest may be listed on foreign exchanges that trade on weekends or other days when the underlying investment companies do not calculate their net asset value (“NAV”). As a result, the value of the underlying investment companies’ holdings, and therefore the Portfolio’s holdings, may change on days when shareholders are not able to purchase or redeem the Portfolio’s shares.

● Currency risk is the risk that exchange rates for currencies in which securities held by the underlying investment companies in which the Portfolio invests are denominated will fluctuate daily. Forward foreign currency exchange contracts may limit potential gains from a favorable change in value between the U.S. dollar and foreign currencies. Unanticipated changes in currency pricing may result in poorer overall performance for the Portfolio than if it had not engaged in these contracts.

● The Adviser’s judgment about the attractiveness or potential appreciation of a particular underlying investment company security could prove to be wrong or the Portfolio could miss out on an investment opportunity because the assets necessary to take advantage of such opportunity are tied up in less advantageous investments.

● Because under normal circumstances the Portfolio invests at least 80% of its net assets in shares of registered investment companies that emphasize investments in fixed income securities, the NAV of the Portfolio will change with changes in the share prices of the investment companies in which the Portfolio invests.

● Not all obligations of U.S. government agencies and instrumentalities are backed by the full faith and credit of the U.S. Treasury. Some are backed only by the credit of the issuing agency or instrumentality. Accordingly, there may be some risk of default by the issuer in such cases.

● There is a risk that the Portfolio, which is passively managed, may not perform as well as funds with more active methods of investment management, such as selecting securities based on economic, financial, and market analysis.

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● The derivative instruments in which the underlying investment companies may invest are subject to a number of risks including liquidity, interest rate, market, credit and management risks, and the risk of improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, and it is possible to lose more than the principal amount invested. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with investments in more traditional securities and instruments.

● The performance of the Portfolio will depend on how successfully the investment adviser(s) to the underlying investment companies pursue their investment strategies.

● Banks are very sensitive to changes in money market and general economic conditions. Adverse general economic conditions can cause financial difficulties for a bank’s borrowers and the borrowers’ failure to repay their loans can adversely affect the bank’s financial situation. Banks are subject to extensive regulation and decisions by regulators may limit the loans banks make and the interest rates and fees they charge, which could reduce bank profitability.

● Inflation protected securities, such as TIPS, generally will fluctuate in response to changes in real interest rates, generally decreasing when real interest rates rise and increasing when real interest rates fall. In addition, interest payments on inflation-protected securities will generally vary up or down along with the rate of inflation. Real interest rates are generally measured as a nominal interest less an inflation rate. As such, investors should be aware that an investment in TIPS over a particular timeframe may decrease in value even in an inflationary environment. There can be no assurance that the inflation index used will accurately measure the real rate of inflation in the prices of goods and services. Because of their inflation adjustment feature, inflation-protected bonds typically have lower yields than conventional fixed-rate bonds.

● ETFs are a type of investment company bought and sold on a securities exchange. An ETF typically represents a fixed portfolio of securities designed to track a particular market index. The risks of owning an ETF generally reflect the risks of owning the underlying securities that they are designed to track, although lack of liquidity in an ETF could result in its being more volatile. Some ETFs are actively-managed by an investment adviser and/or sub-advisers. Actively-managed ETFs are subject to the risk of poor investment selection. The Portfolio may incur brokerage fees in connection with its purchase of ETF shares. The purchase of shares of ETFs may result in duplication of expenses, including advisory fees, in addition to the Portfolio’s own expenses. Certain ETFs may be thinly traded and experience large spreads between the “ask” price quoted by a seller and the “bid” price offered by a buyer. The existence of extreme market volatility or potential lack of an active trading market for an ETF’s shares could result in such shares trading at a significant premium or discount to their NAV.

● Cyber security risk is the risk of an unauthorized breach and access to Portfolio assets, Portfolio or customer data (including private shareholder information), or proprietary information, or the risk of an incident occurring that causes the Portfolio, the investment adviser, custodian, transfer agent, distributor and other service providers and financial intermediaries to suffer data breaches, data corruption or lose operational functionality or prevent Portfolio investors from purchasing, redeeming or exchanging shares or receiving distributions. The Portfolio and its investment adviser have limited ability to prevent or mitigate cyber security incidents affecting third-party service providers, and such third-party service providers may have limited indemnification obligations to the Portfolio or the Adviser. Successful cyber-attacks or other cyber-failures or events affecting the Portfolio or its service providers may adversely impact and cause financial losses to the Portfolio or its shareholders. Issuers of securities in which the Portfolio invests are also subject to cyber security risks, and the value of these securities could decline if the issuers experience cyber-attacks or other cyber-failures.

● The SEC has adopted revisions to the rules permitting funds to invest in other investment companies to streamline and enhance the regulatory framework applicable to fund of funds arrangements. While Rule 12d1-4 under the Investment Company Act of 1940, as amended (the “1940 Act”) permits more types of fund of fund arrangements without reliance on an exemptive order or no-action letters, it imposes new conditions, including limits on control and voting of acquired funds’ shares, evaluations and findings by investment advisers, fund investment agreements, and limits on most three-tier fund structures. Rule 12d1-4 went into effect on January 19, 2021. The rescission of the applicable exemptive orders and the withdrawal of the applicable no-action letters was effective on January 19, 2022. These regulatory changes may adversely impact the Portfolio’s investment strategies and operations.

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More information about the Portfolio’s investments and risks is contained under the section entitled “More About Each Portfolio’s Investments and Risks.”

Performance Information

The chart below illustrates the performance of the Portfolio. The information shows you how the Portfolio’s performance has varied year by year and provides some indication of the risks of investing in the Portfolio. The chart assumes reinvestment of dividends and distributions. Past performance does not necessarily indicate how the Portfolio will perform in the future. Updated information is available at www.matsonmoney.com or by calling (866) 780-0357 Ext. 3863.

TOTAL RETURNS FOR THE CALENDAR YEARS ENDED DECEMBER 31

Best and Worst Quarterly Performance (for the period reflected in the chart above)

Best Quarter: 2.57% (quarter ended June 30, 2020)

Worst Quarter: -3.61% (quarter ended March 31, 2022)

Year to Date Total Return as of September 30, 2023: 1.86%

Average Annual Total Returns

The table below compares the average annual total returns of the Portfolio before taxes for the past calendar year, the past five calendar years, and since inception to the average total returns of a broad-based securities market index for the same periods.

	Average Annual Total Returns for the Periods Ended December 31, 2022
	1 Year	5 Years	Since Inception (February 18, 2014)
Portfolio Returns Before Taxes	-7.04%	-0.09%	0.12%
FTSE World Government Bond Index 1-5 Years (reflects no deduction for fees, expenses or taxes)	-4.49%	0.73%	0.98%
Composite Index*	-5.94%	0.67%	0.95%

* The Composite Index is comprised of the Three-Month Treasury Bill Index, Bloomberg Intermediate Government Bond Index, ICE BofAML 1-3 Year US Government/Corporate Index and Bloomberg U.S. Aggregate Bond Index, each weighted 25%, 25%, 25% and 25%, respectively. Additional information about the Composite Index can be found under the section entitled “More About Each Portfolio’s Investments and Risks.”

Management of the Portfolio

Investment Adviser

Matson Money, Inc.

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Portfolio Managers

Mark E. Matson: Chief Executive Officer and Director, since 1991
Daniel J. List: Portfolio Manager, since 2019

Purchase and Sale of Portfolio Shares

Portfolio shares are not sold directly to the public. Portfolio shares may be purchased and redeemed by separate accounts that fund variable annuity and variable life insurance contracts issued by participating insurance companies. Orders received from separate accounts to purchase or redeem Portfolio shares are effected on business days. Individual investors may purchase or redeem Portfolio shares indirectly through variable annuity contracts and variable life insurance policies offered through the separate accounts.

Taxes

Provided that the Portfolio and separate accounts investing in the Portfolio satisfy applicable tax requirements, the Portfolio will not be subject to federal tax, and the separate accounts will not be taxable on distributions from, or gains with respect to, the Portfolio. Special tax rules apply to life insurance companies, variable annuity contracts and variable life insurance contracts. For information on federal income taxation of owners of variable annuity or variable life insurance contracts, see the prospectus for the applicable contract.

Payments to Broker-Dealers and Other Financial Intermediaries

The Portfolio may pay participating insurance companies and securities dealers for the sale of Portfolio shares and other related services. These payments may create a conflict of interest by influencing the insurance company and your salesperson to recommend the Portfolio over another investment. Ask your salesperson or visit your insurance company’s website for more information.

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MMFI-SU-23