AB SUSTAINABLE GLOBAL THEMATIC FUND INC. CLASS K (ATEKX) Exchange: NMFQS

The Fund pursues opportunistic growth by investing in a global universe of companies that are positively exposed to sustainable investment themes. Under normal circumstances, the Fund invests at least 80% of its net assets in equity securities of issuers located throughout the world that the Adviser believes are positively exposed to sustainable investment themes.The Adviser employs a combination of “top-down” and “bottom-up” investment processes with the goal of identifying securities of companies worldwide, fitting into sustainable investment themes. The Adviser identifies sustainable investment themes that are broadly consistent with achieving the United Nations Sustainable Development Goals. These themes include climate, health and empowerment and may change over time based on the Adviser’s research. In addition to this “top-down” thematic approach, the Adviser also uses a “bottom-up” analysis of individual companies, focusing on prospective earnings growth, valuation, and quality of company management and on evaluating a company’s exposure to environmental, social and corporate governance (“ESG”) factors. The Adviser emphasizes company-specific positive selection criteria over broad-based negative screens in assessing a company’s exposure to ESG factors. The Adviser normally considers a large universe of mid- to large-capitalization companies worldwide for investment.The Fund invests in securities issued by U.S. and non-U.S. companies from multiple industry sectors in an attempt to maximize opportunity, which should also tend to reduce risk. The Fund invests in both developed and emerging market countries. Under normal market conditions, the Fund invests significantly (at least 40%—unless market conditions are not deemed favorable by the Adviser) in securities of non-U.S. companies. In addition, the Fund invests, under normal circumstances, in the equity securities of companies located in at least three countries. The percentage of the Fund’s assets invested in securities of companies in a particular country or denominated in a particular currency varies in accordance with the Adviser’s assessment of the appreciation potential of such securities. The Fund may invest in any company and industry and in any type of equity security, listed and unlisted, with potential for capital appreciation. It invests in well-known, established companies as well as new, smaller or less-seasoned companies. Investments in new, smaller or less-seasoned companies may offer more reward but may also entail more risk than is generally true of larger, established companies. The Fund may also invest in synthetic foreign equity securities, which are various types of warrants used internationally that entitle a holder to buy or sell underlying securities, real estate investment trusts (“REITs”) and zero-coupon bonds.The Fund may, at times, invest in shares of exchange-traded funds (“ETFs”) in lieu of making direct investments in securities. ETFs may provide more efficient and economical exposure to the types of companies and geographic locations in which the Fund seeks to invest than direct investments. Investments in ETFs will not be subject to the Fund’s sustainable investment themes or ESG factors.Currencies can have a dramatic impact on equity returns, significantly adding to returns in some years and greatly diminishing them in others. Currency and equity positions are evaluated separately. The Adviser may seek to hedge the currency exposure resulting from securities positions when it finds the currency exposure unattractive. To hedge all or a portion of its currency risk, the Fund may, from time to time, invest in currency-related derivatives, including forward currency exchange contracts, futures contracts, options on futures contracts, swaps and options. The Adviser may also seek investment opportunities by taking long or short positions in currencies through the use of currency-related derivatives.The Fund may enter into other derivatives transactions, such as options, futures contracts, forwards, and swaps. The Fund may use options strategies involving the purchase and/or writing of various combinations of call and/or put options, including on individual securities and stock indices, futures contracts (including futures contracts on individual securities and stock indices) or shares of ETFs. These transactions may be used, for example, in an effort to earn extra income, to adjust exposure to individual securities or markets, or to protect all or a portion of the Fund’s portfolio from a decline in value, sometimes within certain ranges.