Business & Consumer Services: Insider trading policies (Item 408(b))

We maintain insider trading policies and procedures governing the purchase, sale and/or other dispositions of our securities by directors, officers and employees that we believe are reasonably designed to promote compliance with insider trading laws, rules and regulations, as well as NYSE listing standards. In addition, it is our policy to comply with applicable securities and state laws, including insider trading laws, when engaging in transactions in our securities. A copy of our insider trading policy is filed as Exhibit 19.1 to this Annual Report on Form 10-K.

Except for the information relating to our insider trading policies and procedures set forth in the preceding paragraph and our Executive Officers set forth in Part I of this Annual Report on Form 10-K, we incorporate by reference the information responsive to this Item appearing in our Proxy Statement, which will be filed no later than 120 days after December 31, 2025.

Information regarding our Code of Ethics and Business Conduct and Corporate Governance Policies is incorporated herein by reference from our Proxy Statement, which will be filed no later than 120 days after December 31, 2025. Any amendments to, or waivers from, a provision of our Code of Ethics that apply to our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the Code of Ethics enumerated in paragraph (b) of Item 406 of Regulation S-K shall be disclosed by posting such information on our website at www.msci.com. Information contained on our website is not deemed part of or incorporated by reference into this Annual Report on Form 10-K or any other report filed with the SEC.

Item 11. Executive Compensation

We incorporate by reference the information responsive to this Item appearing in our Proxy Statement, which will be filed no later than 120 days after December 31, 2025.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

We incorporate by reference the additional information responsive to this Item appearing in our Proxy Statement, which will be filed no later than 120 days after December 31, 2025.

Equity Compensation Plans