Marsh Risk Broker Katherine Gensheimer Recognized as a 2026 M&A Power Broker
Katherine Gensheimer, Managing Director & Chief Client Officer, Marsh Risk

Katherine Gensheimer
Managing Director & Chief Client Officer
Marsh, Boston
More than anything, Katherine Gensheimer sees herself as a facilitator of solutions for her clients: “Client service is foundational to everything we do — without exception,” she wrote in her application. One client reported that Gensheimer was tasked with implementing a full insurance solutions program for all of the portfolio companies that sit within the firm’s umbrella. “They were heavily involved in the onboarding of each company to ensure it went seamlessly. Her team also conducted a training for my team on the risks we need to be aware of specifically ahead of a takeover.”
Another client, Blackstone, has been impressed with her collaborative spirit, not to mention her ability to conduct due diligence with urgency to keep deals on track across a “Noah’s ark of companies across all industries and sectors,” according to senior managing director of portfolio operations, Greg Buetler.
“That can include ungodly hours on evenings and weekends, but she has always been dependable as an advocate and a resource, leveraging her influence with insurance companies when needed to get positive outcomes,” he said. “Every risk profile is different, and there is no cookie-cutter approach in a constantly changing risk market. She has been very focused on the next solution she can bring to the table — and that inspires confidence.”
2026 M&A Power Broker Winners & Finalists

What is a Power Broker?
A Risk & Insurance Power Broker® is an individual who stands out among their peers for the exceptional client work they have delivered over the past year. While brokers play many key roles in the insurance industry and risk profession, a Power Broker® award recognizes problem solving, customer service and industry knowledge.
Our goal is to broadly recognize and promote outstanding risk management and customer service among the brokerage community.
Who selects the winners?
Power Brokers are selected by risk managers based on the strength of the testimonials they provide to a team of 15 Risk & Insurance editors and writers.

