Company History

We are an independent MGA & wholesale brokerage with family values. Founded in 1986 by Frank Mastowski and his wife Ellen, we have grown to represent a portfolio of over 150 admitted and non-admitted markets between our in-house binding authority and brokerage capabilities.

Our strength is not only in our relationships with our clients and markets, but our ability to understand the risk and help you with creative placement solutions. Through innovative technology, we continue to find ways to stay cutting-edge and provide additional opportunities with OASIS 24/7 quoting, accounting and comparative rating.

We continue to look forward, while never forgetting where we came from. Great people are what brought us here- from our diverse and multilingual employees, to our carrier partnerships and most importantly our clients.

Thank you for your time to learn more about Jimcor, please feel free to reach out with any questions. We appreciate your continued support.


Coryn F. Thalmann

Coryn F. Thalmann, CIC
Chief Executive Officer / Chief Operating Officer

James Mastowski

James Mastowski
President/Chief Information Officer

*We are an insurance MGA/Wholesaler. This site is for the exclusive use of insurance agents, brokers and carriers.
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