Why does a Fiduciary standard matter?
In a world full of financial noise, clarity matters. As fiduciaries, we are legally bound — and personally committed — to act in your best interest at all times.
Our Westlake Village professionals bring a distinct blend of legal, financial, and entrepreneurial expertise. Whether we’re helping you build a succession plan or manage multigenerational wealth, we do so with transparency, integrity, and purpose.
PURPOSEFUL PLANNING. STRATEGIC OUTCOMES.
Your goals are unique - and so is our approach. Our Westlake Village team combines real-world experience with a personalized, high-touch process designed to move you forward with confidence.
ENTREPRENEURIAL INSIGHT
We’ve walked in your shoes. From start-up to succession, we guide business owners through every stage of growth and transition.
FAMILY-FIRST FOCUS
We help clients prepare for the future with strategies that reflect their values and support the next generation.
CLEAR COMMUNICATION
You’ll always understand the “why” behind your plan. No jargon, no guesswork.
FEE CLARITY
We’re upfront about how we’re compensated - so you can focus on your future, not hidden fees.
ACCOUNTABILITY IN ACTION
We lead with ethics, transparency, and follow-through - because your trust matters.
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OUR COMMITMENT TO YOU
At Exencial’s Westlake Village office, we understand that financial decisions carry long-term weight — not just for your future, but for the generations that follow. That’s why we take the time to understand what matters most to you and tailor our advice accordingly.
Our team brings together decades of experience across financial planning, law, business development, and sustainability. We use this depth of expertise to help clients navigate complexity with confidence, clarity, and care.
What guides our work:
- Building lasting relationships built on trust and mutual respect
- Offering thoughtful, objective advice tailored to your goals
- Communicating clearly, without jargon or hidden agendas
- Leading with integrity, humility, and accountability
- Grounding every strategy in experience, research, and real-world insight
Meet Our Westlake Village Team
Our California-based team brings a dynamic mix of backgrounds - from financial planning and estate law to national outreach and business innovation. With deep community ties and a shared commitment to doing what’s right, we’re proud to serve clients across the region.
We’re here to build something that lasts - not just portfolios, but relationships and legacies.

Partner | Wealth Advisor
Bryan Rentschler
Bryan joined Exencial in June of 2022. He helps our clients to grow, protect, and transfer the wealth our clients build over their lifetime to the next generation, along with the values that built that family wealth. His passion is to make sure our clients can retire comfortably and build a lasting legacy that will last for generations. He particularly has a soft spot for business owners, as his family built a business from scratch in 1970 and ran it successfully until they decided to sell the business and retire comfortably in 2019.
He earned his Bachelor’s degree in Finance from Azusa Pacific University in 2010. After graduating, he worked in the mortgage industry for five years helping families to get into a home they could call their own. After this, he decided to move into his first love of financial advising and wealth management, and after four years in the industry, made the move to Exencial.
Outside of work he and his wife enjoy attending sporting events for the Los Angeles Dodgers, and the Los Angeles Kings. He also enjoys card and board games, and is a bit of a movie buff.

Partner | Business Development Officer
Michael R. McGlashen, J.D., CEPA
Michael joined Exencial Wealth Advisors in 2020 when the firm he owned, Bucks County Financial Planning Group, merged with Exencial. He is a financial planner with over 20 years of experience who is trained as a tax attorney with a specialization in estate planning, trusts, investments, and business exit planning.
Mr. McGlashen earned his undergraduate degree from Temple University in Philadelphia, Pennsylvania, graduating summa cum laude, and elected into Phi Beta Kappa. He received his Jurist Doctorate degree from the University of Florida College of Law, which is ranked as one of the top 25 law schools in the country by US News, 2020; ranked 3rd (tie) in 2020 in Tax; and their Estate Planning Certificate Program is nationally recognized. Mr. McGlashen qualified for the certificate and clerked for Florida’s 8th Judicial Circuit, Probate Division, while in law school. He then received certificates in Real Estate Development and Real Estate Finance from Massachusetts Institute of Technology’s Summer Real Estate Program, post doctorate. He is a Certified Exit Planning Advisor (CEPA) through the Exit Planning Institute.
Michael serves on the Board of Directors of Westlake Rotary Sunrise Foundation; he served as President of the Rotary Club of Westlake Village Sunrise, (2017/18) whose motto is “Where friends gather to have fun and do good in the world”.
He is a board member and Vice President of The Westlakers and a board member The Camarillo Healing Rooms, former President of La Reina High School’s PTA, former Chairman of the Board and President, House of Hope Post Prison Release, Camarillo, CA. He is President/Founding Member of the Westlake Village Chapter of la Chaine Rôtisseurs.
He is former Chairman of the Board of Auditors for Bensalem township, past board member of Bucks County Housing Finance Board, and elected four times to public office. He served in the U.S. Army Reserves as a Military Policeman from 1981 to 1987.
After traveling around the country for years and then going back to school for eight years, he came back to Pennsylvania and married the girl of his dreams, a girl from his hometown, Colleen Wagner.
Michael and Colleen have a sixteen-year-old daughter, Serena, with whom they enjoy monthly daddy/daughter days, Barnes & Noble days, riding dirt bikes, cooking, and gardening. The family’s motto is: we travel and have fun as a tribe and live to serve others. Love of Country Leads.

National Outreach Manager
Stewart Erickson
Enterprise Strategist Proven acumen in formation, development, and successful sequential expansion; propelling enterprise concept from inception to multi-state enterprise. Authored 17 US Patents and implemented specialized technology, comprehensive strategic initiatives, secured multiple capital infusions, executive team building, and managed product commercialization propelling company to national recognition.
Sales and Business Expansion Pro Armed with unique expertise including agriculture. I combine credibility, sensitivity, and value as advantages to opening doors and building respectful relationships.
I'm a visionary with the Ability to Execute.
I'm an energetic but soft-spoken individual, who is great at remote sales by merging everyday people skills, integrity, and a strong work ethic. My previous position was Founder & Vice-President of Business Development, at AG Gas®. I have applied critical thinking and market-based solutions for key environmental issues including: freshwater availability, carbon sequestration, a healthier food chain, and renewable energies.
I have been blessed to have orchestrated leading scientists at: UC Davis, Stanford, California State University Fresno, USDA, UC Kearney AG Research Station, and helped obtain California regulatory authorization for AG Gas technology.
I have served as a community & regional leader in sustainability in Minnesota and Wisconsin, including Rotary International - Regional Sustainability Co-Chair, Past-President of Sustain Hudson Inc. a non-profit and former Director on the Board - YMCA Camp St. Croix. I remain an active participant with my local church.
Hours
Monday - Friday: 7am - 7pm
Saturday: 8am - 2pm
Sunday: 10am - 2pm
Phone
Office: (805) 435-0030
Fax: (704) 659-7820
We would love to hear from you.
Exencial Resources
The Long-Term Impact of Waiting to Save for Retirement
By Derrick Longo, Wealth Advisor
