MSCI Inc. Officer Files Form 144 to Sell $256.5K in Common Stock Under Rule 10b5-1 Plan

Overview

On October 13, 2026, Andrew Craig Wiechmann, an Officer of MSCI Inc. ($MSCI), filed a Form 144 notice disclosing the proposed sale of 450 shares of common stock with an aggregate market value of $256,500.00 (approximately $570.00 per share). The proposed sale date was set for October 12, 2026, executed through Morgan Stanley Smith Barney LLC.

Transaction Details

• Securities Offered: 450 Common Shares
• Aggregate Market Value: $256,500.00
• Shares Outstanding: 72,700,000 shares
• Acquisition Origin: The shares were acquired directly from the issuer as equity compensation: 136 restricted stock shares on February 3, 2025, and 314 performance shares on February 6, 2025.
• Trading Plan: Executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on September 3, 2025.

Significance & Market Impact

• Trading Significance: Low. The proposed sale represents a negligible percentage (<0.001%) of MSCI Inc.'s 72.7 million outstanding shares.
• Pre-Scheduled Nature: Because the sale was conducted under a Rule 10b5-1 trading plan adopted over a year prior (September 2025), it reflects routine liquidity management rather than a discretionary market-timing decision.