MSCI Inc. (“MSCI” or the “Company”) (NYSE: MSCI) will host a virtual open house spotlighting its custom index capabilities on Thursday, September 25. Participants will include Jana Haines, Head of Index, and Jeremy Ulan, Head of Investor Relations and Treasurer.

The webcast and a copy of the presentation slides will be available on September 25, 2025 at 10 AM Eastern Time, accessible from the events and presentations section of MSCI’s Investor Relations homepage, https://ir.msci.com/events-and-presentations. An archived replay of the webcast also will be accessible shortly after the event.

MSCI shareholders, investment research analysts and other interested parties are welcome to pre-submit questions via email to a member of the investor relations team in advance of the event.

About MSCI Inc.

MSCI Inc. (NYSE: MSCI) strengthens global markets by connecting participants across the financial ecosystem with a common language. Our research-based data, analytics and indexes, supported by advanced technology, set standards for global investors and help our clients understand risks and opportunities so they can make better decisions and unlock innovation. We serve asset managers and owners, private-market sponsors and investors, hedge funds, wealth managers, banks, insurers and corporates. To learn more, please visit www.msci.com. MSCI#IR

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