=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-05-15
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: MSCI Inc. (MSCI)
CIK: 0001408198
--- Reporting Owner ---
Name: Fernandez Henry A
CIK: 0001416750
Role: Director, Officer (Chairman and CEO)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +120 | Price: $559.40
Total Value: $67,128.00
Shares Owned After: 1,728,081 | Ownership: D (Direct)
Footnotes:
[F1] This transaction was executed in multiple trades at prices ranging from $558.85 to $559.83. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
[Transaction #2]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +240 | Price: $560.28
Total Value: $134,467.20
Shares Owned After: 1,728,321 | Ownership: D (Direct)
Footnotes:
[F2] This transaction was executed in multiple trades at prices ranging from $559.90 to $560.75. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
[Transaction #3]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +1,238 | Price: $561.56
Total Value: $695,211.28
Shares Owned After: 1,729,559 | Ownership: D (Direct)
Footnotes:
[F3] This transaction was executed in multiple trades at prices ranging from $560.91 to $561.88. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
[Transaction #4]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +1,122 | Price: $562.47
Total Value: $631,091.34
Shares Owned After: 1,730,681 | Ownership: D (Direct)
Footnotes:
[F4] This transaction was executed in multiple trades at prices ranging from $562.01 to $562.96. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
[Transaction #5]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +800 | Price: $563.39
Total Value: $450,712.00
Shares Owned After: 1,731,481 | Ownership: D (Direct)
Footnotes:
[F5] This transaction was executed in multiple trades at prices ranging from $563.03 to $563.90. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
[Transaction #6]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +400 | Price: $564.42
Total Value: $225,768.00
Shares Owned After: 1,731,881 | Ownership: D (Direct)
Footnotes:
[F6] This transaction was executed in multiple trades at prices ranging from $564.12 to $564.74. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
[Transaction #7]
Security: Common Stock
Date: 2026-05-15 | Code: P (Open market purchase)
Shares: +80 | Price: $565.17
Total Value: $45,213.60
Shares Owned After: 1,731,961 | Ownership: D (Direct)
Footnotes:
[F7] This transaction was executed in multiple trades at prices ranging from $565.16 to $565.17. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: I (Indirect)
[Holding #2]
Security: Common Stock
Ownership: I (Indirect)
[Holding #3]
Security: Common Stock
Ownership: I (Indirect)
[Holding #4]
Security: Common Stock
Ownership: I (Indirect)
[Holding #5]
Security: Option to purchase common stock
Ownership: D (Direct)
[Holding #6]
Security: Premium option to purchase common stock
Ownership: D (Direct)
[Holding #7]
Security: Premium option to purchase common stock
Ownership: D (Direct)
[Holding #8]
Security: Premium option to purchase common stock
Ownership: D (Direct)
[Holding #9]
Security: Option to purchase common stock
Ownership: D (Direct)
--- Footnotes (Complete Index) ---
F1: This transaction was executed in multiple trades at prices ranging from $558.85 to $559.83. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
F2: This transaction was executed in multiple trades at prices ranging from $559.90 to $560.75. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
F3: This transaction was executed in multiple trades at prices ranging from $560.91 to $561.88. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
F4: This transaction was executed in multiple trades at prices ranging from $562.01 to $562.96. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
F5: This transaction was executed in multiple trades at prices ranging from $563.03 to $563.90. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
F6: This transaction was executed in multiple trades at prices ranging from $564.12 to $564.74. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
F7: This transaction was executed in multiple trades at prices ranging from $565.16 to $565.17. The price reported above reflects the weighted average purchase price. The Reporting Person hereby
undertakes to provide, upon request, to the SEC staff, the issuer or the security holders of the issuer full information regarding the number of shares and prices at which each transaction was effected.
--- Signature ---
/s/ /s/ Cecilia Aza, attorney-in-fact (2026-05-18)
