This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

The Fund invests at least 99.5% of its total assets in Government securities, cash and repurchase agreements collateralized fully by Government securities or cash. For purposes of this policy, “Government securities” means any securities issued or guaranteed as to principal or interest by the United States, or by a person controlled or supervised by and acting as an instrumentality of the Government of the United States pursuant to authority granted by the Congress of the United States; or any certificate of deposit for any of the foregoing. Government securities include those issued by government agencies or instrumentalities, such as the Federal National Mortgage Association (Fannie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac), Federal Home Loan Banks and Federal Farm Credit Banks, whose securities are neither issued nor guaranteed by the U.S. Government. The Fund intends to be a “Government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940 (1940 Act). Shareholders will be given at least 60 days’ advance notice of any change to the 99.5% policy.

The Fund uses the amortized cost method of valuation to seek to maintain a stable $1.00 share price and does not currently intend to impose liquidity fees on Fund redemptions. Please note, however, that the board of trustees reserves the ability to subject the Fund to a liquidity fee in the future, after providing prior notice to shareholders.

The Fund invests in:

U.S. government securities which may include fixed, floating and variable rate securities.

Repurchase agreements which are agreements by the Fund to buy Government securities and then to sell the securities back on an agreed upon date (generally, less than seven days) at a higher price, which reflects prevailing short-term interest rates.

Portfolio maturity and quality The Fund only buys securities that at the time of acquisition are "eligible securities," as defined by applicable regulation (e.g., government securities, securities issued by a money market fund, and securities that the investment manager determines present minimal credit risks). The Fund maintains a dollar-weighted average portfolio maturity of 60 calendar days or less, maintains a dollar-weighted average life for its portfolio of 120 calendar days or less, and only buys securities that mature or are deemed to mature in 397 calendar days or less (or securities otherwise permitted to be purchased because of maturity shortening provisions under applicable regulation).

Use of Blockchain

The Fund’s transfer agent maintains the official record of share ownership via a proprietary blockchain-integrated system that utilizes features of traditional book-entry form and one or more public blockchain networks. The use of blockchain technology is relatively new and still evolving for mutual funds. Similar to traditional fund recordkeeping systems, all Fund and shareholder records in the blockchain-integrated system are under the full and complete control of the Fund’s transfer agent.

A blockchain is an open, distributed ledger that records transactions between two parties in a verifiable and append-only manner using cryptography. Transactions on the blockchain are verified and authenticated by computers on the network. The process of authenticating a transaction before it is recorded ensures that only valid and authorized transactions are permanently recorded on the blockchain in collections of transactions called “blocks.” Blockchain networks are based upon software source code that establishes and governs their respective cryptographic systems for verifying transactions.

The transfer agent’s blockchain-integrated system is distinguishable from distributed ledgers/blockchains that lack access controls and other restrictions on which permissionless tokens are issued and transferred. Permissionless tokens include, for example, the native digital asset of distributed blockchains that are: (1) issued in a decentralized manner under no one entity’s control; and (2) unconstrained in accessibility and movement. Examples of native digital assets include Bitcoin (BTC) on the Bitcoin network and Ether (ETH) on the Ethereum network.

The Fund’s blockchain-integrated recordkeeping system is a permissioned system created by the transfer agent on a public blockchain network using smart contract technology to incorporate a whitelist of permissioned wallets into the relevant smart contract (or token configuration in the case of Stellar) alongside various administrative control functions. Unlike permissionless tokens, Fund shares recorded on the transfer agent’s blockchain-integrated system are under the unilateral control of the transfer agent. The transfer agent is responsible for maintaining the accuracy of Fund share ownership on any blockchain network used by the blockchain-integrated system and has the ability to correct errors and unauthorized transactions in, and limit the transferability of, Fund shares.

The recording of Fund shares on the blockchain will not affect the Fund’s investments. The Fund intends to be a Government money market fund. Accordingly, the Fund will invest, consistent with Rule 2a-7 under the 1940 Act, at least 99.5% of its total assets in Government securities, cash and repurchase agreements collateralized fully by Government securities or cash. The Fund will not invest in any native crypto assets of public permissionless blockchains.

Complex information technology and communications systems, such as blockchain networks, are subject to a number of different threats or risks that could adversely affect the Fund. If such an event occurs, the Fund may incur substantial costs. In addition, market events also may trigger a volume of transactions that overloads current information technology and communication systems and processes, impacting the ability to conduct the Fund’s operations. The Fund may never achieve market acceptance and may not be able to attract sizable assets or achieve scale.

The Fund’s investment manager expects that the blockchain-integrated recordkeeping system will provide operational efficiencies without negatively impacting the quality of the transfer agent’s services. For more information regarding the Fund’s use of blockchain technology, see “Use of Blockchain” in the Fund Details section of this prospectus. More detailed information about blockchain technology and the public blockchain networks used by the Fund’s transfer agent, including the regulatory, operational and technological risks associated with distributed ledger technology, as well as detailed information about the Fund and its policies and risks, can be found in the Fund’s Statement of Additional Information (SAI).

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year. The table shows the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at www.franklintempleton.com/FOBXX or the App or the Institutional Web Portal (as defined below in "Purchase and Sale of Fund Shares") or by calling (800) DIAL BEN/342-5236.

Credit: U.S. government investments generally have the least credit risk but are not completely free of credit risk. The Fund may incur losses on debt securities that are inaccurately perceived to present a different amount of credit risk by the market, the investment manager or the rating agencies than such securities

actually do. Any downgrade of securities issued by the U.S. government may result in a downgrade of securities issued by its agencies or instrumentalities.

U.S. Government Securities: Not all obligations of the U.S. Government, its agencies and instrumentalities are backed by the full faith and credit of the United States. Some obligations are backed only by the credit of the issuing agency or instrumentality, and in some cases there may be some risk of default by the issuer. Government agency or instrumentality issues have different levels of credit support. U.S. government-sponsored entities ("GSEs"), such as Fannie Mae and Freddie Mac, may be chartered by Acts of Congress, but their securities are neither issued nor guaranteed by the U.S. government. Although the U.S. government has provided financial support to Fannie Mae, Freddie Mac and certain other GSEs in the past, no assurance can be given that the U.S. government will continue to do so. Accordingly, securities issued by Fannie Mae and Freddie Mac may involve a risk of non-payment of principal and interest. Investors should remember that guarantees of timely repayment of principal and interest do not apply to the market prices and yields of the securities or to the net asset value or performance of the Fund, which will vary with changes in interest rates and other market conditions.

Market: The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise. In addition, the value of the Fund’s investments may go up or down due to general market or other conditions that are not specifically related to a particular issuer, such as: real or perceived adverse economic changes, including widespread liquidity issues and defaults in one or more industries; changes in interest, inflation or exchange rates; unexpected natural and man-made world events, such as diseases or disasters; financial, political or social disruptions, including terrorism and war; and U.S. trade disputes or other disputes with specific countries that could result in additional tariffs, trade barriers and/or investment restrictions in certain securities in those

countries. Any of these conditions can adversely affect the economic prospects of many companies, sectors, nations, regions and the market in general, in ways that cannot necessarily be foreseen.

Large Redemptions: Certain shareholders, including other funds or accounts advised by the investment manager or an affiliate of the investment manager and shareholders concentrated in a particular industry or group of industries, may from time to time own a substantial amount of the Fund’s shares. The Fund may experience adverse effects when shareholders make large redemptions from the Fund that equate to a large percentage of the Fund's assets. In order to meet such redemption requests, the Fund may need to sell securities at times when it would not otherwise do so, which could result in losses to the Fund, increase the Fund's transaction costs and expense ratios, accelerate the realization of taxable income, if any, to shareholders, and adversely affect the Fund’s liquidity.

Cybersecurity: Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain access to Fund assets, Fund or customer data (including private shareholder information), or proprietary information, cause the Fund, the investment manager, authorized participants, or index providers (as applicable) and listing exchanges, and/or their service providers (including, but not limited to, Fund accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality or prevent Fund investors from purchasing, redeeming shares or receiving distributions. The investment manager has limited ability to prevent or mitigate cybersecurity incidents affecting third party service providers, and such third party service providers may have limited indemnification obligations to the Fund or the investment manager. Cybersecurity incidents may result in financial losses to the Fund and its shareholders, and substantial costs may be incurred in an effort to prevent or mitigate future cybersecurity incidents. Issuers of securities in which the Fund invests are also subject to cybersecurity risks, and the value of these securities could decline if the issuers experience cybersecurity incidents.

Because technology is frequently changing, new ways to carry out cyber attacks are always developing. Therefore, there is a chance that some risks have not been identified or prepared for, or that an attack may not be detected, which puts limitations on the Fund's ability to plan for or respond to a cyber attack. Like other funds and business enterprises, the Fund, the investment manager, and their service providers are subject to the risk of cyber incidents occurring from time to time.