NYSE Issues Certification of Listing for Marsh & McLennan Companies

Overview of Filing: Form CERT

Company: Marsh & McLennan Companies, Inc.
CIK: 0000062709
Ticker Symbol: MMC
Filing Type: Form CERT (Exchange Certification)
Filing Date: October 28, 2026
Accession Number: 0000876661-26-000867

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Filing Purpose and Context

A Form CERT is an administrative notification submitted by a national securities exchange (in this case, the New York Stock Exchange) to the U.S. Securities and Exchange Commission (SEC). Under Section 12(d) of the Securities Exchange Act of 1934 and Rule 12d1-3 thereunder, an exchange issues this certification to confirm that an issuer's class of securities has been approved for listing and registration on that exchange.

Key Highlights

• Issuer Identification: Marsh & McLennan Companies, Inc. (SIC 6411 - Insurance Agents, Brokers & Services), headquartered in New York, NY.
• Filing Action: Official NYSE certification confirming the listing approval of specific securities (such as newly issued debt or equity instruments registered under a Form 8-A or shelf registration).
• Nature of Filing: Non-transactional, routine administrative regulatory compliance document.

Market and Trading Impact

• Trading Significance: Low
• Form CERT filings do not indicate insider sentiment, insider buying or selling, or changes in operating fundamentals. They represent procedural confirmations that exchange listing requirements have been satisfied for the underlying registered securities.