Item 1A. Risk Factors

For a discussion of the risk factors affecting the Company, see “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for fiscal year ended December 31, 2025.

There have been no material changes to the risk factors and uncertainties known to the Company and disclosed in the Company’s Form 10-K for the fiscal year ended December 31, 2025, that, if they were to materialize or occur, would, individually or in the aggregate, have a material effect on MSCI’s business, operating results, financial condition or cash flows.

Item 2. Unregistered Sales of Equity Securities, Use of Proceeds and Issuer Purchases of Equity Securities

There were no unregistered sales of equity securities during the three months ended March 31, 2026.

The table below presents information with respect to purchases made by or on behalf of the Company of its shares of common stock during the three months ended March 31, 2026.

Issuer Purchases of Equity Securities

(1)Includes, when applicable, (i) shares purchased by the Company on the open market under the stock repurchase program; (ii) shares withheld to satisfy tax withholding obligations on behalf of employees that occur upon vesting and delivery of outstanding shares underlying restricted stock units; and (iii) shares held in treasury under the MSCI Inc. Non-Employee Directors Deferral Plan. The value of shares withheld to satisfy tax withholding obligations was determined using the fair market value of the Company’s common stock on the date of withholding, using a valuation methodology established by the Company.

(2)Excludes 1% excise tax incurred on share repurchases.

(3)See Note 9, “Shareholders’ Equity (Deficit),” of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for further information regarding our stock repurchase program.