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Our Core Values

Management Team

Thought leaders in business valuation

Shelia Darby, MBA, CVA,
MAFF, ECA

Managing Director, BizWorth

Shelia Darby is the Managing Director of BizWorth, where she leads the valuation department and specializes in business valuation and litigation support. With a career spanning over 25 years, she has deep expertise in valuation engagements, including complex litigation cases. She holds a BBA in Finance from Baylor University and an MBA from Rice University’s Jones Graduate School of Business. A CVA, MAFF, and ECA, Shelia is a member of NACVA and the Institute of Equipment Valuation and previously served on NACVA’s Ethics Oversight Board.

Kip Holderness, Ph.D., CPA, CMA, CFE, CVA

Valuation Expert; Litigation Support

Dr. Kip Holderness is a Valuation Expert with BizWorth, contributing to certified valuations and litigation support. He is a Professor of Accounting at West Virginia University and Program Coordinator for the Master of Forensic and Fraud Examination program. Kip holds a Ph.D. in Accountancy from Bentley University and is a CPA, CMA, CFE, and CVA. He also serves as Director of Research for the Association of Certified Fraud Examiners Research Institute and has been qualified as an expert witness in litigation matters.

Joseph Wilson, CVA, ECA

Business Valuation Manager

Joseph is a Business Valuation Manager at BizWorth, where he leads the firm’s SBA Valuation Team and oversees engagements across a broad range of industries. He holds a B.B.A. in Energy Management (2017) and an M.S. in Finance (2021) from the University of Oklahoma. Joseph serves as Treasurer of the TABB Houston Chapter and holds certifications as a Certified Valuation Analyst (CVA) and Equipment Certified Appraiser (ECA).

Shelia Darby, MBA, CVA, MAFF, ECA
Managing Director
Shelia Darby is the Managing Director of BizWorth, where she leads the valuation department and specializes in business valuation and litigation support. With a career spanning over 25 years, she has deep expertise in valuation engagements, including complex litigation cases. She holds a BBA in Finance from Baylor University and an MBA from Rice University’s Jones Graduate School of Business. A CVA, MAFF, and ECA, Shelia is a member of NACVA and the Institute of Equipment Valuation and previously served on NACVA’s Ethics Oversight Board.
Joseph Wilson, CVA, ECA
Business Valuation Manager
Joseph is a Business Valuation Manager at BizWorth, where he leads the firm’s SBA Valuation Team and oversees engagements across a broad range of industries. He holds a B.B.A. in Energy Management (2017) and an M.S. in Finance (2021) from the University of Oklahoma. Joseph serves as Treasurer of the TABB Houston Chapter and holds certifications as a Certified Valuation Analyst (CVA) and Equipment Certified Appraiser (ECA).
Kip Holderness, Ph.D., CPA, CMA, CFE, CVA
Valuation Expert; Litigation Support
Dr. Kip Holderness is a Valuation Expert with BizWorth, contributing to certified valuations and litigation support. He is a Professor of Accounting at West Virginia University and Program Coordinator for the Master of Forensic and Fraud Examination program. Kip holds a Ph.D. in Accountancy from Bentley University and is a CPA, CMA, CFE, and CVA. He also serves as Director of Research for the Association of Certified Fraud Examiners Research Institute and has been qualified as an expert witness in litigation matters.
Victoria Duron, CPA, CVA
Business Valuation Manager
Victoria is a Business Valuation Manager at BizWorth, focusing on valuation production and compliance support. She has experience working with a Big 4 public accounting firm in Forensic & Integrity Services, where she performed forensic accounting analyses, supported expert witness engagements, and managed compliance across federal grant programs. Victoria holds a Master in Professional Accounting and a BBA from The University of Texas at Austin. She is a licensed CPA in Texas, a Certified Valuation Analyst (CVA) through NACVA, and a member of the AICPA and the Texas Society of CPAs, Houston Chapter.
Sydney Gray, CVA
Business Appraiser
Sydney Gray is a Financial Analyst at BizWorth, contributing to the valuation production team. She holds a Bachelor of Science in Business Administration from Liberty University and is pursuing a Master of Business Administration with a concentration in Finance. Sydney is currently pursuing the Certified Valuation Analyst (CVA) designation.
Dan Darby, MSc
Managing Director
Dan is a Managing Director at BizWorth, focusing on technology and partnership development to grow the company’s reach and advisor network. He holds a BBA from Baylor University and a Master of Science in Leadership and Organizational Change from Northwestern University. Dan brings a strong background in strategic marketing, technology adoption and business development.
Madeleine Fontein, PMP
Business Operations Coordinator
Madeleine Fontein is the Business Operations Coordinator at BizWorth, where she supports production management and streamlines business operations to ensure efficiency across teams. She holds a Bachelor of Commerce from Dalhousie University and is a Certified Project Management Professional (PMP). With a strong foundation in operational strategy and process improvement, Madeleine plays a key role in delivering high-quality valuation services.
Weston Tschirhart, ECA
Certified Machinery & Equipment Appraiser
Mr. Tschirhart is a certified machinery and equipment appraiser at BizWorth. Specializing in over 10 years of agricultural, industrial and restaurant machinery and equipment, Mr. Tschirhart’s expertise ensures accurate and reliable assessments for clients across various industries and locations throughout the country. A proud graduate of the University of Texas at San Antonio (UTSA), Weston's analytical prowess and commitment to excellence make him a valuable asset in providing comprehensive and accurate machinery and equipment appraisals to clients from coast to coast.
Shelia Darby, MBA, CVA, MAFF, ECA
Managing Director

Shelia Darby is the Managing Director of BizWorth, where she leads the valuation department and specializes in business valuation and litigation support. With a career spanning over 25 years, she has deep expertise in valuation engagements, including complex litigation cases. She holds a BBA in Finance from Baylor University and an MBA from Rice University’s Jones Graduate School of Business. A CVA, MAFF, and ECA, Shelia is a member of NACVA and the Institute of Equipment Valuation and previously served on NACVA’s Ethics Oversight Board.

Joseph Wilson, CVA, ECA
Business Valuation Manager

Joseph is a Business Valuation Manager at BizWorth, where he leads the firm’s SBA Valuation Team and oversees engagements across a broad range of industries. He holds a B.B.A. in Energy Management (2017) and an M.S. in Finance (2021) from the University of Oklahoma. Joseph serves as Treasurer of the TABB Houston Chapter and holds certifications as a Certified Valuation Analyst (CVA) and Equipment Certified Appraiser (ECA).

Kip Holderness, Ph.D., CPA, CMA, CFE, CVA
Valuation Expert; Litigation Support

Dr. Kip Holderness is a Valuation Expert with BizWorth, contributing to certified valuations and litigation support. He is a Professor of Accounting at West Virginia University and Program Coordinator for the Master of Forensic and Fraud Examination program. Kip holds a Ph.D. in Accountancy from Bentley University and is a CPA, CMA, CFE, and CVA. He also serves as Director of Research for the Association of Certified Fraud Examiners Research Institute and has been qualified as an expert witness in litigation matters.

Victoria Duron, CPA, CVA
Business Valuation Manager

Victoria is a Business Valuation Manager at BizWorth, focusing on valuation production and compliance support. She has experience working with a Big 4 public accounting firm in Forensic & Integrity Services, where she performed forensic accounting analyses, supported expert witness engagements, and managed compliance across federal grant programs. Victoria holds a Master in Professional Accounting and a BBA from The University of Texas at Austin. She is a licensed CPA in Texas, a Certified Valuation Analyst (CVA) through NACVA, and a member of the AICPA and the Texas Society of CPAs, Houston Chapter.

Sydney Gray, CVA
Business Appraiser

Sydney Gray is a Financial Analyst at BizWorth, contributing to the valuation production team. She holds a Bachelor of Science in Business Administration from Liberty University and is pursuing a Master of Business Administration with a concentration in Finance. Sydney is currently pursuing the Certified Valuation Analyst (CVA) designation.

Dan Darby, MSc
Managing Director

Dan is a Managing Director at BizWorth, focusing on technology and partnership development to grow the company’s reach and advisor network. He holds a BBA from Baylor University and a Master of Science in Leadership and Organizational Change from Northwestern University. Dan brings a strong background in strategic marketing, technology adoption and business development.

Madeleine Fontein, PMP
Business Operations Coordinator

Madeleine Fontein is the Business Operations Coordinator at BizWorth, where she supports production management and streamlines business operations to ensure efficiency across teams. She holds a Bachelor of Commerce from Dalhousie University and is a Certified Project Management Professional (PMP). With a strong foundation in operational strategy and process improvement, Madeleine plays a key role in delivering high-quality valuation services.

Weston Tschirhart, ECA
Certified Machinery & Equipment Appraiser

Mr. Tschirhart is a certified machinery and equipment appraiser at BizWorth. Specializing in over 10 years of agricultural, industrial and restaurant machinery and equipment, Mr. Tschirhart’s expertise ensures accurate and reliable assessments for clients across various industries and locations throughout the country. A proud graduate of the University of Texas at San Antonio (UTSA), Weston's analytical prowess and commitment to excellence make him a valuable asset in providing comprehensive and accurate machinery and equipment appraisals to clients from coast to coast.

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Blog

Resources

Know Your Pharmacy’s Value Before Making Key Decisions

Pharmacy value is determined through financial performance, margins, and risk. Learn how certified appraisers value pharmacies before a sale or transition.

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Resources

Fair Market Value of a Business: 5 Factors That Influence Your Company’s Worth

The fair market value of a business reflects what a willing buyer would pay based on financial performance, risk, and market evidence. This guide explains how certified appraisers determine fair market value, the key financial factors that influence it, and why a professional valuation is essential before selling, transferring ownership, or planning for the future.

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Resources

HVAC Business Valuation: A Step-by-Step Guide for Owners Planning to Sell

An HVAC business valuation provides a defensible estimate of fair market value by interpreting financial performance, margins, cash flow, and risk. This guide explains how certified appraisers value HVAC companies, what documentation is required, and how owners can prepare for a successful sale or long-term exit strategy.

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Resources

Ecommerce Business Valuation: What You Need Before Selling an Online Business

An ecommerce business valuation provides a defensible estimate of fair market value by interpreting financial performance, earnings stability, and risk. This guide explains how certified appraisers value online businesses, what documentation is required, and how owners can prepare before selling or planning a strategic exit.

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News & Press Releases

Shelia Darby Named President of NACVA – Houston Chapter

BizWorth is pleased to announce that managing director Shelia Darby, MBA, CVA, MAFF, is the newly appointed President of the National Association of Certified Valuators

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NACVA Names Shelia Darby to its Ethics Oversight Board

The National Association of Certified Valuators and Analysts® (NACVA®), the organization that has trained over 35,000 CPAs and other valuation and consulting professionals in the...

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