To achieve the International Sustainability Core 1 Portfolio’s investment objective, Dimensional Fund Advisors LP (the “Advisor”) implements an integrated investment approach that combines research, portfolio design, portfolio management, and trading functions. As further described below, the Portfolio’s design emphasizes long-term drivers of expected returns identified by the Advisor’s research, while balancing risk through broad diversification across companies and sectors. The Advisor’s portfolio management and trading processes further balance those longterm drivers of expected returns with shorter-term drivers of expected returns and trading costs.

The International Sustainability Core 1 Portfolio is designed to purchase a broad and diverse group of securities of non-U.S. companies in developed markets. The Portfolio invests in companies of all sizes, with increased exposure to smaller capitalization, lower relative price, and higher profitability companies as compared to their representation

in the International Universe, while adjusting the composition of the Portfolio based on sustainability impact considerations. For purposes of this Portfolio, the Advisor defines the International Universe as a market capitalization weighted set (e.g., the larger the company, the greater the proportion of the International Universe it represents) of non-U.S. companies in developed markets that have been authorized as approved markets for investment by the Advisor’s Investment Committee. The Portfolio’s increased exposure to smaller capitalization, lower relative price, and higher profitability companies may be achieved by decreasing the allocation of the Portfolio’s assets to larger capitalization, higher relative price, or lower profitability companies relative to their weight in the International Universe. An equity issuer is considered to have a high relative price (i.e., a growth stock) primarily because it has a high price in relation to its book value. An equity issuer is considered to have a low relative price (i.e., a value stock) primarily because it has a low price in relation to its book value. In assessing relative price, the Advisor may consider additional factors such as price to cash flow or price to earnings ratios. An equity issuer is considered to have high profitability because it has high earnings or profits from operations in relation to its book value or assets. The criteria the Advisor uses for assessing relative price and profitability are subject to change from time to time.

The International Sustainability Core 1 Portfolio intends to purchase securities of companies associated with developed market countries that the Advisor has designated as approved markets. As a non-fundamental policy, under normal circumstances, the Portfolio will invest at least 80% of its net assets in equity securities. The Advisor determines company size on a country or region specific basis and based primarily on market capitalization. The percentage allocation of the assets of the Portfolio to securities of the largest high relative price companies as defined above will generally be reduced from between 0% and 35% of their percentage weight in the International Universe. As of December 31, 2023, securities of the largest high relative price companies in the International Universe comprised approximately 16% of the International Universe and the Advisor allocated approximately 14% of the Portfolio to securities of the largest high relative price companies in the International Universe. The percentage by which the Portfolio’s allocation to securities of the largest high relative price companies is reduced will change due to market movements, sustainability impact considerations and other factors. Additionally, the representation of securities in the Portfolio as compared to their representation in developed non-U.S. markets may be impacted by the Portfolio’s sustainability impact considerations.

The Advisor may also increase or reduce the International Sustainability Core 1 Portfolio’s exposure to an eligible company, or exclude a company, based on shorter-term considerations, such as a company’s price momentum, short-run reversals, and investment characteristics. In assessing a company’s investment characteristics, the Advisor considers ratios such as recent changes in assets divided by total assets. The criteria the Advisor uses for assessing a company’s investment characteristics are subject to change from time to time. In addition, the Advisor seeks to reduce trading costs using a flexible trading approach that looks for opportunities to participate in the available market liquidity, while managing turnover and explicit transaction costs.

The International Sustainability Core 1 Portfolio may gain exposure to companies associated with approved markets by purchasing equity securities in the form of depositary receipts, which may be listed or traded outside the issuer’s domicile country. The Portfolio may purchase or sell futures contracts and options on futures contracts for foreign or U.S. equity securities and indices, to increase or decrease equity market exposure based on actual or expected cash inflows to or outflows from the Portfolio. Because many of the Portfolio’s investments may be denominated in foreign currencies, the Portfolio may enter into foreign currency exchange transactions, including foreign currency forward contracts, in connection with the settlement of foreign securities or to transfer cash balances from one currency to another currency. The above-referenced investments are not subject to, although they may incorporate, the Portfolio’s sustainability impact considerations.

The International Sustainability Core 1 Portfolio may lend its portfolio securities to generate additional income.

The Advisor intends to take into account the impact that companies may have on the environment and other sustainability considerations when making investment decisions for the International Sustainability Core 1 Portfolio. Relative to a portfolio without these considerations, the Portfolio will exclude or underweight securities of companies that, according to the Portfolio’s sustainability impact considerations, may be less sustainable as compared either to other companies in the Portfolio’s investment universe or other companies with similar business lines. Similarly, relative to a portfolio without sustainability impact considerations, the Portfolio will overweight securities of companies that, according to the Portfolio’s sustainability impact considerations, may be more sustainable as compared either to other companies in the Portfolio’s investment universe or other companies with similar business lines. In considering sustainability impact and other factors that the Advisor believes may be

important to investors, the Advisor will consider greenhouse gas emissions intensity, fossil fuel reserves, coal, land use, water use, factory farming activities, biodiversity, involvement in toxic spills or releases, operational waste, tobacco, palm oil, cluster munitions manufacturing, landmine manufacturing, civilian firearms manufacturing, the ownership or operation of private prisons and/or immigrant detention facilities, child labor, and severe environmental, social, or governance controversies that indicate operations inconsistent with responsible business conduct standards (such as those defined by the UN Global Compact Principles and the OECD Guidelines for Multinational Enterprises), among other factors. In particular, the Portfolio will exclude companies the Advisor considers to have high greenhouse gas emissions intensity or fossil fuel reserves relative to other issuers. The Advisor may engage third party service providers to provide research and/or ratings information relating to the Portfolio’s sustainability impact considerations with respect to securities in the portfolio, where information is available from such providers.

The Portfolio may periodically modify, add, or remove certain sustainability impact considerations. (See “Additional Information on Investment Objectives and Policies—Applying the Portfolios’ Sustainability Impact Considerations” in this Prospectus.)