Tranche Update on MSCI Inc.'s Equity Buyback Plan announced on July 28, 2022.

MSCI, Inc. specializes in publishing information and support tools dedicated to institutional investors. Net sales break down by activity as follows: - dissemination of stock market indices (57.4%): used in particular for the creation of indexed products, comparative performance analysis, rebalancing and asset allocation; - development of market analysis solutions and tools (24.4%): development of content, applications and services for risk management, performance attribution and portfolio management; - development of tools for the analysis of environmental, social and governance criteria (11.4%); - other (6.8%). Net sales are distributed geographically as follows: the United States (41.3%), Americas (4.4%), the United Kingdom (16.1%), Europe/Middle East/Africa (22.5%), Japan (4%) and other (11.7%).