Our Team

For more than 35 years, Hal Perkins has worked as a financial advisor for high net worth clients. Entering the investment industry in 1978, Hal has spent more than 30 of those years with Oppenheimer. He employs a wide variety of individualized investment strategies and planning techniques to serve his clients. A native Texan and lifelong resident, Mr. Perkins graduated from the University of Texas Graduate School of Business in 1978 with an M.B.A. in finance and accounting. His undergraduate studies were at Rice University in Houston (President’s Honor Role 1974-1975), from which he graduated with a Bachelor of Commerce degree, earning an athletic scholarship (1971-1975) and lettering in football.

Hal has earned the Accredited Investment Fiduciary (AIF®) designation from the Center for Fiduciary Studies™. The AIF designation signifies specialized knowledge of fiduciary responsibility and the ability to implement policies and procedures that meet a defined standard of care. Hal is also a member of the Investment Management Consultant Association (IMCA) as well as other industry associations.

Additionally, Hal has been named to Forbes/Shook Best-in-State rankings 2019 to 2025. 

Eugene works with high net worth families, individuals, business owners, foundations, and institutions. His focus is to provide financial planning along with customized financial strategies involving asset allocations among stocks and bonds and, where appropriate, nontraditional investments.

Eugene began his career in May 2009 at Morgan Keegan & Co. (now part of Raymond James & Co.) and joined Oppenheimer in May, 2012. He received his Bachelor’s degree in Economics with a minor in Business Foundations from the University of Texas at Austin. Eugene holds the CERTIFIED FINANCIAL PLANNER™ (CFP®) designation, from The Certified Financial Planner Board of Standards, Inc. He holds the General Securities Representative License (Series 7) and the Uniform Combined State Law Examination (Series 66). He is also licensed as an agent for life, accident, health insurance and annuities.

Eugene believes in a moral and philanthropic obligation to give back to the community. He currently sits on the board of the Daar Charitable Foundation and World Help Ukraine. He previously sat on the board of the Eric M Suhl Foundation, Holocaust Museum Foundation, Jewish Family Service of Houston, Kiwanis Club of Houston, and was a mentor to the BigBrothersBigSisters program. Eugene enjoys spending time with his wife and two children Max and Lilly. Eugene was born in Kharkiv, Ukraine and speaks Russian fluently.

Suzanne Rismiller is a Senior Director – Investments at Oppenheimer & Co. Inc., based in Houston, Texas. She hold the CERTIFIED FINANCIAL PLANNER™ designation, and focuses on helping high-net-worth individuals—particularly women and young families—define, plan for, and pursue their long-term financial goals. Her approach is proactive and adaptable, reflecting her belief that effective financial planning should evolve alongside her clients’ lives and be reviewed regularly.

Suzanne holds a Bachelor’s degree in International Relations from the University of Texas at Austin and a Master’s in International Business from Grenoble École de Management in France. She began her career at Oppenheimer in 2017 and was selected in 2019 as one of only 45 professionals nationwide to participate in the firm’s prestigious Associate Financial Advisor program. Her outstanding performance led to her promotion in 2023 to Senior Director – Investments, a role in which she continues to deliver thoughtful leadership and strategic guidance to her clients.

Outside of her professional role, Suzanne is an active member of the Junior League of Houston and the Kappa Kappa Gamma Alumnae Association. She enjoys gardening, taking walks with her adventurous dog Remi, and spending quality time with her husband and their family.

Sherry Buhrle is a founding member of The Dellinger Group and is a Senior Financial Associate with over 35 years in financial services. Sherry has been with Oppenheimer for more than 25 years. She has extensive experience in trading, client relations and account administration. Sherry brings a wealth of knowledge in all aspects of asset management.