Our Story

Euclid Insurance Services, Inc. was founded by Peter Colis in 1952 and remains family owned today. The firm began as a retail insurance agency selling all types of property casualty, health and life products. Today, Euclid operates as a program administrator for specialty property casualty and professional liability products and as a general agency and third party administrator for employee benefit and life products. While Euclid’s business model has evolved over the years, its commitment to excellence remains unchanged. The company strives to deliver large company capabilities in a privately-owned, responsive environment for the benefit of its brokers, carrier partners, employees and policyholders.

Family First

Peter Colis was the son of Greek immigrants who settled in Chicago in search of a better life. After graduating high school in 1944, he joined the navy and served until the end of World War II. He graduated Northwestern University in 1949, the first college graduate in his family. In 1952 he married Nancy Rantis and a few months later, he founded Euclid Insurance Agencies. Peter passed from this life in 2012, one month after his 60th wedding anniversary. Nancy followed him a few months later.


Euclid began as a retail insurance agency selling all types of insurance products. Over the years, the firm grew to be one of the larger retail insurance brokers in the Chicago market. While the firm has changed much since its early years, its original commitment to excellence remains fully in place.

Moving Forward

After receiving a BA from Northwestern University and a MBA from Northwestern’s Kellogg Graduate School of Management-and building a ten year career in the corporate insurance world-Peter’s son, John, joined Euclid. John’s experience included time at General Reinsurance Corporation and Aon Risk Services learning the reinsurance and program insurance business.

Over the next 20 years, Euclid built both its program administrator and its employee benefit general agency business. As part of this evolution, the original retail insurance agency was sold in 2012.

An Excellent Future

Euclid Insurance Services, Inc. remains owned by the Colis family today and continues to create new underwriting companies, partnering with best in class insurance professionals. Management for the Euclid program administrator companies have an equity interest in the operations they lead. Euclid continues to look for potential new underwriting partners.

The Euclid family of underwriting companies now includes: