MSCI Inc. (MSCI) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-29 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: MSCI Inc. (MSCI) CIK: 0001408198 --- Reporting Owner --- Name: RIEFLER LINDA H CIK: 0001366334 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-29 | Code: A (Grant or award) Shares: +7 | Price: $0.00 Shares Owned After: 20,990 | Ownership: D (Direct) Footnotes: [F1] Shares acquired by the Reporting Person in connection with MSCI Inc.'s payment of a dividend. Of the shares reported, 1 share is attributable to the Reporting Person's unvested RSUs and remains subject to the same vesting conditions as the underlying RSUs. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the 60th day after such Reporting Person's "separation from service" as a director. --- Footnotes (Complete Index) --- F1: Shares acquired by the Reporting Person in connection with MSCI Inc.'s payment of a dividend. Of the shares reported, 1 share is attributable to the Reporting Person's unvested RSUs and remains subject to the same vesting conditions as the underlying RSUs. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the 60th day after such Reporting Person's "separation from service" as a director. --- Signature --- /s/ /s/ Cecilia Aza, attorney-in-fact (2026-06-02)