About us

Graduated from Texas Tech with a Bachelor’s Degree in Finance in 1991 and a Master’s Degree in Business Administration in 1992.
Graduated from South Texas College of Law in 1995 and became a licensed attorney in the same year.
Began employment with James A. Ullrich, P.C. in August 1995. Obtained Certified Public Accountant Certification on September 25, 2000.
Has over 15 years of accounting and tax preparation experience. Married to Sara Ullrich and have one child – Samuel.

Trusted Accounting Solutions for Your Success

Seasoned Certified Public Accountant with over 16 years of experience in the accounting field.
Since earning his CPA in 2018, Stephan has built a reputation for providing reliable, insightful, and client-focused financial guidance to individuals and businesses alike.
A proud graduate of Sam Houston State University, Stephan holds a Bachelor’s degree in Business Administration.
His educational background and hands-on expertise have equipped him to navigate complex tax matters, financial reporting, and business advisory services with precision and integrity.
Stephan is known for his approachable demeanor and commitment to helping clients achieve their financial goals. He believes in building lasting relationships based on trust, transparency, and personalized service.
Outside the office, Stephan enjoys traveling to new destinations, playing golf, and exploring the world of cinema.
He is happily married to Cathy Darnell, and together they share their home with two beloved Great Danes, Amos and Athena.
With a passion for both numbers and people, Stephan Darnell brings a unique blend of professionalism and warmth to Ullrich & Darnell, L.L.C., making him a trusted advisor for clients seeking clarity and success in their financial lives.