MSCI Inc. (NYSE: MSCI), a leading provider of critical decision support tools and services for the global investment community, announced today that it has commenced an offering of senior unsecured notes (the “notes”) in a registered public offering (the “Offering”). The proposed Offering is subject to market and other conditions. MSCI intends to use the net proceeds from the Offering to repay outstanding borrowings under its revolving credit facility and to pay related fees and expenses, with remaining amounts to be used for general corporate purposes, which may include, without limitation, potential repurchases of its common stock, investments and acquisitions.

J.P. Morgan and BofA Securities are acting as joint book-running managers for the Offering.

MSCI has filed a registration statement (including a prospectus and a preliminary prospectus supplement) with the Securities and Exchange Commission (“SEC”) for the Offering to which this communication relates. The registration statement automatically became effective upon filing on March 8, 2024. Before you invest, you should read the base prospectus in that registration statement, the preliminary prospectus supplement and the other documents MSCI has filed with the SEC for more complete information about MSCI and this Offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, MSCI, any underwriter or any dealer participating in the Offering will arrange to send investors the prospectus and preliminary prospectus supplement upon request by contacting J.P. Morgan Securities LLC by telephone (collect) at (212) 834-4533 or BofA Securities, Inc. by telephone at 1-800-294-1322 or by email at dg.prospectus_requests@bofa.com.

This press release does not constitute an offer to sell or the solicitation of an offer to buy the notes, nor does it constitute an offer, solicitation or sale in any jurisdiction in which such offer, solicitation or sale is unlawful.

About MSCI Inc.

MSCI is a leading provider of critical decision support tools and services for the global investment community. With over 50 years of expertise in research, data and technology, we power better investment decisions by enabling clients to understand and analyze key drivers of risk and return and confidently build more effective portfolios. We create industry-leading research-enhanced solutions that clients use to gain insight into and improve transparency across the investment process.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding the proposed Offering. These forward-looking statements relate to future events or to future financial performance and involve underlying assumptions, as well as known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these statements. In some cases, you can identify forward-looking statements by the use of words such as “may,” “could,” “expect,” “intend,” “plan,” “seek,” “anticipate,” “believe,” “estimate,” “predict,” “potential” or “continue,” or the negative of these terms or other comparable terminology. You should not place undue reliance on forward-looking statements because they involve known and unknown risks, uncertainties and other factors that are, in some cases, beyond MSCI’s control and that could materially affect actual results, levels of activity, performance or achievements.

Other factors that could materially affect actual results, levels of activity, performance or achievements can be found in MSCI’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 filed with the Securities and Exchange Commission (“SEC”) on February 7, 2025 and in quarterly reports on Form 10-Q and current reports on Form 8-K filed or furnished with the SEC. If any of these risks, uncertainties or other matters materialize, or if MSCI’s underlying assumptions prove to be incorrect, actual results may vary significantly from what MSCI projected. Any forward-looking statement in this press release reflects MSCI’s current views with respect to future events and is subject to these and other risks, uncertainties and assumptions relating to MSCI’s operations, results of operations, growth strategy and liquidity. MSCI assumes no obligation to publicly update or revise these forward-looking statements for any reason, whether as a result of new information, future events, or otherwise, except as required by law.

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