MSCI Inc. ("MSCI" or the "Company") (NYSE:MSCI) today announced that it will host a conference call, as previously scheduled, to review its third quarter 2026 financial results on Tuesday, October 20, 2026, at 11:00 a.m. Eastern Time. The results for third quarter 2026 will be released pre-market on the same day. A copy of the earnings release and other related materials and a live webcast link will be available on the events and presentation section of MSCI’s Investor Relations website https://ir.msci.com/events-and-presentations.

Participants who wish to join the third quarter 2026 earnings call via telephone should register in advance by clicking here. Registered participants will receive an email confirmation with a unique PIN to access the conference call.

An archived replay of the webcast will be available shortly after the conclusion 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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MSCI Inc. Contacts

Investor Inquiries

jeremy.ulan@msci.com

Jeremy Ulan +1 646 778 4184

jisoo.suh@msci.com

Jisoo Suh +1 917 825 7111

Media Inquiries

PR@msci.com

Melanie Blanco +1 212 981 1049

Konstantinos Makrygiannis +44 (0)7768 930056

Tina Tan +852 2844 9320