Marsh & McLennan Companies, Inc.

Marsh & McLennan Companies, Inc. (MMC), a global professional services firm headquartered in the US and operating in the insurance agencies and brokerages industry, has reported significant progress and ambitious targets regarding its carbon emissions.

For the reporting year 2025, MMC's total reported emissions were approximately 704,270,000 kg CO2e. This figure comprises:

• Scope 1 emissions: approximately 21,108,000 kg CO2e.
• Scope 2 emissions (market-based): approximately 7,964,000 kg CO2e.
• Scope 3 emissions, which accounted for the majority of the company's footprint, included categories such as purchased goods and services (approximately 342,849,000 kg CO2e), business travel (approximately 108,238,000 kg CO2e), and employee commute (approximately 77,728,000 kg CO2e).

In 2024, total reported emissions were approximately 802,522,000 kg CO2e. Scope 1 emissions were approximately 19,820,000 kg CO2e, and Scope 2 (market-based) emissions were approximately 16,818,000 kg CO2e. Key Scope 3 contributors included purchased goods and services (approximately 391,356,000 kg CO2e) and business travel (approximately 113,708,000 kg CO2e).

Marsh & McLennan Companies, Inc. is committed to achieving net-zero greenhouse gas emissions across its value chain by 2050. This overarching goal is supported by several key reduction targets:

• Near-Term Targets: The company aims to reduce absolute Scope 1 and Scope 2 greenhouse gas (GHG) emissions by 50% by 2030, using a 2019 base year. Furthermore, they are committed to reducing Scope 3 GHG emissions from purchased goods and services, capital goods, and business travel by 55% per million USD of operating profit by 2030.
• Long-Term Targets: Marsh McLennan is working towards a 90% reduction in absolute Scope 1 and Scope 2 GHG emissions by 2050, also from a 2019 baseline. For Scope 3 emissions, the company targets a 97% reduction per million USD of operating profit by 2050, covering purchased goods and services, capital goods, upstream transportation and distribution, business travel, and employee commuting.

These targets align with a 1.5°C pathway, indicating a commitment to climate science-based reductions. The company has also committed to setting and executing low-carbon transition strategies to support its net-zero aspirations.