Our Team

Kathryn Grimco

President, Owner

Kathryn has been active in the insurance services business for over twenty years and is recognized as an accomplished leader within the industry. After spending several years working with other firms, she and Co-Founder Todd Miller wanted to establish a company that put the clients’ needs before the bottom line. Throughout her career, Kathryn has been awarded multiple achievement awards including Outstanding Producer awards and the Premier Status Producers award from several A-rated insurance companies. Although she enjoys the success she has realized throughout her career, one of her greatest joys comes from being a grandmother and spending quality time with her family. Kathryn was born and raised in Iowa and has been an Arizona resident since 1994.


Carole Miller

Director of Operations, Owner

Carole has over twenty-five years of business management experience and has been part of the First Guaranty Financial team since May of 2007. Her in-depth knowledge of business operations and extensive background in business administration has been instrumental in the development and focus of the company. Prior to her current role, Carole worked as an Administrative Consultant with her own firm, and was in the Real Estate Investment & Management and Corporate Housing industries. She has held positions as a Business Consultant, Vice-President and Designated Broker for national Real Estate Investment firms, and District Manager with an International Corporate Housing company overseeing operations in Arizona and New Mexico.

Carole holds a B.S. with honors in Business Administration from the W. P. Carey School of Business, Arizona State University. She is an Iowa native and moved to Arizona in 1985 where she and her husband Todd raised their two children


Dennis Miller

Branch Owner – Las Vegas

Dennis has been involved in various aspects of the financial industry since 1983. After receiving his Bachelor’s degree in Business Management with minors in Accounting and Finance in 1979, Dennis became a member of the Chicago Board of Trade. There he traded U.S. 30-Year Treasury Bonds for 14 years in the largest, most actively traded financial “pit” in the history of financial futures. The majority of what Dennis recommends to his clients today is insured, which helps them achieve their retirement goals. Dennis’ son graduated Suma Cum Laude from Arizona State University, W.P. Carey School of Business and Barrett Honors College, and is now an analyst for a trading company. His daughter also graduated Suma Cum Laude as well from the University of Arizona, and is enjoying life before returning to school to work on a Masters degree.


Joel Roper

Account Representative

Joel has dedicated his many years of customer relations experience to the First Guaranty Financial team, and has successfully transitioned his top-notch customer service and sales skills into being a leading Account Representative with the company. Joel is a multimillion-dollar producer for the firm, and has greatly contributed to the ongoing success of the company. Joel is a Missouri native but has been enjoying the Arizona sunshine since 1997. When he is not assisting customers with their financial needs he appreciates the outdoors and likes to hike and camp as well as loves to snorkel or scuba dive whenever he gets the chance. Joel also enjoys spending time with family and friends or just relaxing with a good book to read.

Jeffrey Strike

Account Manager

Jeffrey offers a wealth of experience to his clients and the First Guaranty Financial team in Mesa, Arizona. He has held a Life Insurance Producer license since 1994 and from 1994 to 2008 owned his own Independent Insurance Agency in Oregon. In 2007, Jeffrey obtained his Securities registration, and in 2009 became a Financial Advisor. Since becoming a fiduciary, Jeffrey has worked diligently with clients to help them achieve a balanced approach to their financial portfolio, and now offers clients Investment Advisory services through our affiliate firm, Forethought Investments, a Registered Investment Advisor Firm in Arizona.

Jeffrey is an Alaska native but after years of dark, cold winters he decided to relocate, and enjoys the sunshiny days in Arizona. He has two adult children and one grandchild, and when not assisting clients he enjoys exploring new places, golf, and spending time with family and friends.

Debbie VanZuiden

Administrative Assistant

Debbie joined the First Guaranty Financial family in October of 2017 and has since been offering her exceptional customer care while getting to know our clients in the Northwest Valley. Prior to joining our team, Debbie worked eleven years in the banking industry where she was a loan specialist, and most recently handled dual roles working as a Marketing & Events Coordinator and Administrative Assistant. She is originally from Fulton, IL and in her free time volunteered as a member of the Board of Directors of the YWCA, most recently serving as the Vice President. Debbie and her husband are now enjoying the Arizona sunshine and look forward to missing future cold Illinois winters.

Cristina Puma

Administrative Assistant

Cristina has over 20 years of administrative and customer service experience, and plays a key role in the day-to-day business operations in the Mesa, Arizona office. She continually strives to provide exceptional customer care to each client and focuses on delivering excellence within every customer experience. She is extremely proficient in her role and understands the importance of providing superior administrative support as well as exceptional customer service. Cristina was born and grew up in Arizona but spent most of her adult life on Long Island. She moved back to Arizona with her husband in 2005. Following her relocation, she took a break from her career to focus on raising her son with autism. Cristina is very passionate about raising awareness and acceptance for children and adults with autism. In her free time, Cristina enjoys spending time with her family and friends.