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A relationship that’s focused on your needs.

Your family, your business and your possessions are all important to you, but you may not know how to best protect them. We have the experience to navigate the unique risks you face, serving as your insurance advisor in Illinois Valley.

What Sets us Apart


Our insurance advisors have years of experience in the insurance industry and serve as your advocate from selecting coverage through filing a claim.


As an independent insurance agency we have great relationships with many well-known, reputable insurance companies, giving you the power of choice.


Our insurance advisors have a strong passion for insurance and protecting what you value most in business and in life. We treat our customers like family.


Fulfilling our commitment to service is about more than writing checks. It’s about making an impact. We do that with the help of the Brennan & Stuart Inc. family.

years of commitment to our clients
generation family business
friendly insurance professionals
committed to client satisfaction

Brennan & Stuart Inc. History

Brennan & Stuart, Inc. began as most family businesses do, with extraordinary determination, dedication, and commitment to professionalism. From its inception in 1956, the vision of one man has developed into a staff of 21, highly educated, insurance professionals. We support our people by being highly automated and provide them an array of the latest equipment and industry software.

Continued perpetuation has placed Mark V. Stuart, CIC, CWCU at the helm of our business. Under his guidance, our professional staff continues to retain an enviable reputation throughout the Midwest. Mark’s philosophy of “empowering all members of BSI’s staff” provides quick and authoritative responses to our client’s request for service and product.

The agency provides all lines of insurance products, including risk management, through four primary divisions: Commercial Lines, Employee Benefits, Personal Lines, and Financial Services. There is a strong focus on Workers Compensation insurance, Crane & Rigging and associated risks, Contractors, Towers, Manufacturing and Trucking. The agency focus is on the mid-sized account market and is an excellent alternative for the middle and lower-middle market clientele that is frequently given less attention by the large multi-national brokerage firms.

Our goal is to build a long-term relationship with our clients by taking a consultative approach to insurance. Our prospects develop into clients because we take the time to understand their business or individual needs and goals. We then tailor a cost-effective, many times innovative, insurance program through one or more of our companies. Being a continued resource for insurance and related topics, such as OSHA, COBRA and Safety manuals, solidifies the relationship between agency and client.

All of this could not continue without a strong commitment to our insurance carriers. We do not bid insurance and require our prospects to provide us with a strong commitment before marketing their account. We maintain an extensive “Markets by Class” manual so we submit only those risks that meet a carrier’s appetite. Premium Loss Comparisons are provided on most accounts and an informative cover letter allows underwriters a quick overview of the risk and pricing requirements.

Brennan & Stuart, Inc. is currently doing business in thirty-five states and is contracted with thirty leading companies and MGAs. The agency attained the distinction of being named a “Best Practices” agency and has been featured in Rough Notes Magazine and Agent & Broker. In addition, various employees, sit on a number of company/agency advisory committees.
Our Awards & Recognition

Crest Foods Supplier of the Year


Crest Foods Supplier of the Year

Our Partnerships
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