MSCI (MSCI) CFO sells 450 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

MSCI Inc. Chief Financial Officer Andrew C. Wiechmann sold 450 shares of common stock in an open-market transaction at $604.56 per share. The sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on September 3, 2025. Following this planned sale, he directly owns 22,094 MSCI shares.

Insider Trade Summary 10b5-1

Net Seller: 450 shares ($272,052)

Net Sell 1 txn

Insider Wiechmann Andrew C.

Role Chief Financial Officer

Sold 450 shs ($272K)

Type	Security	Shares	Price	Value
Sale	Common Stock	450	$604.56	$272K

Holdings After Transaction: Common Stock — 22,094 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 450 shares Sale price: $604.56 per share Shares owned after sale: 22,094 shares

3 metrics

Shares sold 450 shares Open-market sale on June 10, 2026

Sale price $604.56 per share Reported transaction price

Shares owned after sale 22,094 shares Direct ownership following transaction

Key Terms

Rule 10b5-1 trading plan, open-market sale, Common Stock

3 terms

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wiechmann Andrew C.

(Last) (First) (Middle)

MSCI INC.

7 WORLD TRADE CENTER, 250 GREENWICH ST.

(Street)

NEW YORK NEW YORK 10007

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MSCI Inc. [ MSCI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/10/2026		S		450(1)	D	$604.56	22,094	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 3, 2025.

Remarks:

	/s/ Cecilia Aza, attorney-in-fact	06/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did MSCI (MSCI) CFO Andrew Wiechmann report in this Form 4?

MSCI CFO Andrew C. Wiechmann reported selling 450 shares of common stock in an open-market transaction at $604.56 per share. The filing also notes his remaining direct ownership of 22,094 shares after the transaction.

At what price did the MSCI (MSCI) CFO sell his shares?

Andrew Wiechmann sold 450 MSCI common shares at an average price of $604.56 per share. This price comes directly from the reported transaction details in the Form 4 insider trading disclosure.

How many MSCI (MSCI) shares does the CFO hold after this sale?

After the reported sale, MSCI CFO Andrew Wiechmann directly holds 22,094 shares of MSCI common stock. This post-transaction ownership figure is disclosed in the Form 4 as the total shares following the transaction.

Was the MSCI (MSCI) CFO’s stock sale under a Rule 10b5-1 plan?

Yes. The Form 4 footnote states the sale was effected under a Rule 10b5-1 trading plan adopted by Andrew Wiechmann on September 3, 2025. Such plans pre-schedule trades to reduce timing concerns.

Is this MSCI (MSCI) insider trade a buy or a sell transaction?

This insider trade is a sale. The Form 4 reports a transaction code “S” and describes it as an open-market sale of 450 MSCI common shares, confirming it is a selling transaction rather than a purchase.