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.

What Sets us Apart


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


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.

Years of commitment to our clients
Qualified insurance carriers to choose from
Locations for easy bill payment and personalized service
Focused on managing personal and business risk
About - Stammen Insurance Team Posing While Standing and Sitting and Smiling for a Photo in Front of a Brick Wall on a Sunny Day

A tradition of successful services since 1919 can only come by moving with the times.

The agency that is today Stammen Insurance Group, LLC is the product of a merger between two insurance agencies with a history of customer service. Pete Stammen founded his agency in 1953 and C.A. Stubbs in 1919 with a common goal of providing quality customer service. The merged agencies operated for years in St. Henry, OH.

In August of 1993, Paragon Insurance Agency in Celina was purchased and Stammen-Paragon Insurance Agency was created. Understanding his customer’s needs into the future, Pete Stammen later brought his three sons into the agency. Chuck, Bill, and Mark Stammen continued to operate the agency under the same professional principles their father had set forth.

In May of 2016, Chuck, Bill, and Mark expanded the business into Auglaize County through the purchase of the Ruppert Insurance Agency in St. Marys, OH. This allowed the agency to offer more markets to their existing and future customers.

Chuck, Bill, and Mark initiated their perpetuation plan in May of 2017 with Cody Muhlenkamp, Josh Schmackers, and Jason Stover. It was during this transition that Stammen Insurance Agency, Inc, Stammen-Paragon Insurance Agency, Ruppert-Stammen Insurance Agency, and Stammen Financial LLC were combined to create the Stammen Insurance Group, LLC as it is known today. The three new-comers are partners and owner operators of the agency and work alongside Chuck, Bill, and Mark daily to insure customers continue to receive the quality, professional service they have become accustomed to over the years.

In February of 2018, Stammen Insurance Group, LLC expanded its operational foot print by opening a branch office in Coldwater, OH. This location will provide the agency with an opportunity to better serve the residents of Coldwater. Stammen Insurance Group, LLC operates through four locations within Mercer and Auglaize Counties.

Our Primary Objectives Are:
To always be
honest and fair
To be interested in helping people solve their insurance problems
To treat the client’s needs as though they were our own

We have a commitment to maintain a high standard of excellence in all that we do and to establish a firm relationship of mutual trust and service with each of our clients.

Our experience is based on a well trained, experienced professional staff and serious conscientious attitude toward our clients.

The services you can expect:

  • A Complete analysis of your insurance needs.
  • We design a responsible protection program for you.
  • We select the company or companies best suited to your situation.
  • We present you with a competitively priced proposal.
  • We periodically review the adequacy of your insurance program.
Our Organizations & Affiliations
  • Celina-Mercer County Chamber of Commerce
  • Celina Rotary Club
  • Coldwater Chamber of Commerce
  • Knights of Columbus
  • Mercer Health MED Foundation
  • MAV Youth Mentoring
  • Mercer County Elks
  • St. Henry Athletic Boosters
  • St. Henry Chamber of Commerce
  • St. Henry Community Club
  • St. Henry Knights of Columbus
  • St. Henry Heritage Club
  • St. Henry School Board
  • St. Mary’s Chamber of Commerce
  • St. Mary’s Kiwanis