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Leadership that brings exceptional experience to your insurance challenges

The Arthur Hall Insurance leadership team is comprised of tenured insurance professionals from diverse backgrounds and areas of expertise, with strong specialization across multiple lines of business. Working together and calling upon each other’s strengths, we deliver comprehensive insight and services for all your insurance needs.

James S. Denham, CPCU, CIC

President; Agency Principal

Jim Denham is the President of Arthur Hall Insurance. During his tenure at the helm since 2006, he has more than doubled the firm’s revenue, transforming the business into a leading regional insurance brokerage. Under his guidance, Arthur Hall Insurance now provides commercial and personal insurance programs and risk management solutions to clients in 40 states across the country.

Under Jim’s leadership, the firm acquired a significant book of business in 2011 expanding their area of expertise to the specialized needs of biomedical firms. Life science and technology is now a dedicated profit center for Arthur Hall Insurance making it one of the few insurance firms qualified to provide this unique coverage.

In addition to providing consultative solutions to clients, Jim focuses his time on ensuring the growth of the firm and developing new risk management programs for a wide variety of businesses. Jim is proud to celebrate 50 years of helping companies, families and individuals protect what matters most to them. He is also committed to continuing the Arthur Hall Insurance tradition of community stewardship, supporting a wide range of local charitable events including college scholarships and initiatives to provide much needed items to under-privileged children and families.

After receiving a Bachelor of Arts degree from the University of Virginia, Jim began his career with J.P. Morgan Bank & Trust Co. as an investment assistant in the Private Banking Department. He joined Arthur Hall Insurance in 1991, was elected Vice President of the firm in 1995 and in 2003, earned the designation of Chartered Property Casualty Underwriter (CPCU). He received the Certified Insurance Counselor designation in 2008.

In addition to his professional pursuits, Jim is a member of the Board of Directors of The Chester County Health System, a member of Penn Medicine. He resides in Wilmington, DE with his wife, Jennifer.


Glenn D. Burcham, CIC, CRM

Senior Vice President; Agency Principal

Glenn earned his Bachelor of Science in Business Administration with a Marketing concentration from Salisbury State University in 1981.

He began his career in insurance in 1983 with Liberty Mutual in their Baltimore, MD office and later joined PDP Group of Hunt Valley, MD. Upon returning to his native Delaware in 1988, Glenn joined J.A. Montgomery Insurance in Wilmington, DE.

As a partner of Arthur Hall Insurance, Glenn brings over 31 years experience in insurance sales, administration and risk management.  Serving as the Senior Vice President of Commercial Lines he brings both a technical and practical approach to each client, having developed and maintained solid relationships with numerous clients throughout his career. Glenn excels at matching the right insurance provider for his clients for optimum results, whether the client is implementing a first-dollar program or a fully self-insured program.

Glenn is licensed in Property & Casualty and in Life & Health in several states, and he holds the designations of Certified Insurance Counselor (CIC) and Certified Risk Manager (CRM).

Glenn has served as a board member for the Delaware Association of Nonprofit Agencies (DANA) and supports other local nonprofits including the United Way of Delaware.


Nicole C. Grebloskie, CAPI, CIC, CISR

Vice President, Personal Lines; Agency Principal

Nicole joined Arthur Hall Insurance after graduating with honors in 1997 from West Chester University with a Bachelor of Arts degree in History. Over the past ten years, Nicole has held positions as Account Representative, Account Manager, and Personal Lines Manager

As one of the partners of Arthur Hall Insurance and serving as Vice President of the Personal Lines Department, Nicole manages the Personal Lines Department, growth of Personal revenue, facilitating agency and company management systems, developing training manuals, establishing procedures and agency guidelines, creating personalized insurance risk programs and interaction with clientele.

Nicole’s Insurance designations include Certified Advisor of Personal Insurance (CAPI), Certified Insurance Counselor (CIC) and Certified Insurance Representative (CISR). She is part of a select group of agents nationally who have completed the intensive educational CAPI program to understand the lifestyle and complex risk management and insurance needs of high-net worth individuals. The CIC Society’s national members are required to pass rigorous undergraduate- and graduate-level examinations, meet experience requirements, and agree to be bound by a strict code of professional ethics. The CISR designation is recognized throughout the industry as a standard of achievement and ongoing professionalism. Certified Insurance Service Representatives must commit to annual continuing education to update their designation and knowledge in order to serve their clients, agencies, and companies at the highest level.

Nicole has been awarded the Travelers Insurance Insurance High Achiever Award and currently serves as a board member on the Greater West Chester Chamber of Commerce and Historic Kennett Square. She is Fundraising Committee Chair for Historic Kennett Square and serves on their Executive Committee.


Mark D. Sammarone, CIC, CISR

Executive Vice President; Agency Principal

Mark entered in the insurance industry in 1992, focusing primarily on property and casualty insurance and risk management solutions for small and mid-size commercial entities.

Mark joined Arthur Hall Insurance in 2000 and became an agency partner in 2005. He serves as Vice President of the company, a member of their senior management team and is on their board of directors. He also serves as the leader of one of the commercial business development teams.

Mark holds a Certified Insurance Counselor designation, which is recognized throughout the industry as a standard of achievement, personal dedication, and expertise to succeed in an ever-changing, demanding profession. The CIC Society’s national members are required to pass rigorous undergraduate- and graduate-level examinations, meet experience requirements, and agree to be bound by a strict code of professional ethics.

Mark is an active member of the West Chester Community, having served on several nonprofit boards including the Greater West Chester Chamber of Commerce, Chester County Interlink, West Chester Regional Portal Corporation, Children’s Country Week Association, and the Rotary Club of West Chester.


Karen L. Leary, CIC, CISR

Operations Manager; Agency Principal

After earning a Bachelor of Arts degree in Accounting from Goldey Beacom College, Karen began her insurance career with the John B. Waldron Insurance Agency in 1976. In 1990 the Waldron agency merged with Arthur Hall Insurance.

Karen is a licensed Property, Casualty, Life & Health agent. She earned her Certified Insurance Service Representative (CISR) certification in 1992, and her Certified Insurance Counselor (CIC) certification in 1998.

Karen is one of the partners of Arthur Hall Insurance, serving as the Secretary and Treasurer, and is also on their Board of Directors. Karen is the Operations Manager and a member of the Senior Management Team.


Joshua J. Isler, CIC

Vice President, Agency Principal

Josh Isler is a Vice President of Arthur Hall Insurance and joined the agency management team as a principal shareholder in 2018.

Josh began his career with Arthur Hall Insurance in 2004, returning in 2015 as a Commercial Lines Account Executive. With a continued focus on generating new business opportunities and establishing strategic business relationships, Josh has a proven track record of providing the best possible risk management solutions to his clients in both personal and commercial realms.

Josh credits those important client relationships established early in his career, clients who have placed their trust in him from the beginning, with his success in the industry. Growing a book of business from scratch is challenging in the insurance industry. Doing it successfully without the benefit of growing up in the area escalates that level of difficulty, yet Josh is not only recognized as a seasoned insurance professional but also one that earns the respect of all those with which he comes in contact.

Josh earned a Bachelor of Science degree in both management and marketing from Eastern University. He holds the insurance industry’s premier Certified Insurance Counselor (CIC) designation recognized throughout the industry as a standard of achievement, personal dedication, and expertise. The CIC Society’s national members are required to pass rigorous undergraduate and graduate-level examinations, meet experience requirements, and agree to be bound by a strict code of professional ethics.

“The industry continues to excite and challenge me,” says Josh, “and we have more to offer our clients than ever before through niche products, risk management expertise, full time claims staff and value added services. Arthur Hall Insurance is committed to caring for their clients and delivers a complete program based on the agency’s mission of serving as a trusted Advisor, Advocate, and Agent.”