After successful Big 4 careers advising some of the largest industry players and working on some of the largest and most complex transactions, Robert Tinnell and Christopher Orbell founded Tall Oaks Partners to prioritize their passion for advising clients and delivering thoughtful services and quality work product.
Our firm's structure enables us to forge close, meaningful relationships with our clients and move quickly on deliverables by minimizing operational inefficiencies.
Deep technical and industry experience
The team members working for you have extensive experience advising clients on complex financial and industry issues.
Collaborative engagements
We bring a flexible and accommodating approach to our client engagements. Our process is centered around collaboration with our clients, frequent and responsive communication, and our team’s experience delivering advisory services.
Commitment to our clients
Our firm is built on developing long-standing relationships with our clients, large and small. Our clients are our top priority and we make ourselves available to you as needs arise.
Meet the team
Our team has significant experience delivering services to clients across multiple industries and sectors. We tailor our services and deliverables to meet client needs and prevailing industry and economic trends.
Managing Partners
Robert Tinnell, CFA
Christopher Orbell
Senior Team Members
Isabel Valecillos
Adrien Le Roy
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Christy Mulroy
Meet the team
Our team has significant experience delivering services to clients across multiple industries and sectors. We tailor our services and deliverables to meet client needs and prevailing industry and economic trends.
Robert Tinnell, CFA
Christopher Orbell
Isabel Valecillos
Adrien Le Roy
Christy Mulroy
Adrien Le Roy
Associate
Education
Professional Affiliations
Isabel Valecillos
Associate
Education
Professional Affiliations
Christy Mulroy
Office Manager
Christy has been an office manager for Tall Oaks Partners for over 4 years. Prior to joining Tall Oaks Partners, Christy worked as a social worker, before transitioning into several part-time roles with local businesses and non-profit organizations. As a full-time social worker Christy specialized in mental health services for children and families and child welfare before stepping away from her career to focus on her family and three young children. Upon returning to work, her professional roles have included warehouse and inventory management, social media marketing, and preparing home study material for a Houston-based foster care and adoption agency.
Christy’s office manager role with Tall Oaks Partners involves the management of accounts receivable and payable, personnel administration, social media and marketing activities, and other general office and organization management related tasks.
Education
The University of Texas at Austin, Master of Science in Social Work
The University of Texas at Austin, Bachelor of Science in Social Work
Professional Affiliations
Christopher Orbell
Managing Partner
Christopher has over thirteen years of business valuation experience between his time with Tall Oaks Partners and Deloitte.
The majority of Christopher’s assignments relate to assisting private and public participants in the energy and resources, media and entertainment, consumer products and services, technology and telecommunications, and transportation and logistics industries.
Advisory services he provides to his clients include the valuation of businesses, intangible assets, and financial securities for financing, restructuring and reorganization, management planning, and financial reporting purposes. Over the years Christopher has also focused on serving private equity clients, working with certain of the larger, more successful firms in the U.S. to prepare and review quarterly investment valuations.
Education
IE Business School, Master of Business Administration (MBA)
Northeastern University, Bachelor’s Degree, Civil Engineering
Professional Affiliations
Member, American Society of Appraisers
Robert Tinnell, CFA
Managing Partner
Robert has over fifteen years of advisory and valuation experience between his time with Deloitte and Tall Oaks Partners. Robert advises public and private clients on a myriad of financial and technical matters across multiple industries and sectors.
Specific industries and segments he serves include industrial services, energy and resources, media and entertainment, transportation and logistics, consumer products and services, chemicals and specialty products, and engineering and construction. He has worked on some of the largest and most complex M&A transactions and bankruptcies across multiple industries. His assignments include valuation studies, impairment analyses, purchase price allocations, the valuation of debt and equity instruments, discount and premium studies, board advisory, and financial modeling.
Robert has served as an expert witness regarding valuation matters related to oil and gas assets and has also been a guest speaker at numerous universities and conferences on topics related to business valuation and the oil and gas industry.
Education
Rice University, Master of Business Administration (MBA), Finance
The University of Texas at Austin, Bachelor of Business Administration (BBA), Management and Finance
Professional Affiliations
Chartered Financial Analyst (CFA)
Member, Houston Business and Estate Planning Council
Executive Board Member and Chair, Family Houston (Houston-based non-profit)