Management Team

Peter D. Holt

Peter D. Holt

President, Chief Executive Officer & Director

Peter D. Holt joined The Joint in April 2016 as Chief Operating Officer and has since held several roles, including as President and Chief Executive Officer.

Holt’s career spans more than 30 years and includes extensive operational experience in executive management with companies that have multiple store locations and franchises. Most recently, he served as President and CEO of Tasti D-Lite LLC, a retailer of lower-fat dairy desserts, where he led its acquisition by Kahala Brands.  Holt also served as Executive in Residence of Great Hill Partners, a Boston-based private equity firm, where he was responsible for identifying, qualifying and assisting in the due diligence process of potential franchisor acquisitions. As the Chief Operating Officer of 24Seven Vending (U.S.), a subsidiary of the New Zealand publicly traded company, VTL Group Limited, Holt was responsible for the acquisition-to-franchise conversion expansion strategy in parallel with managing the financing, sales, operations, technology and training for the company. Earlier, Holt held various positions with Mail Boxes, Etc., Brice Foods, Inc. and International Franchise Association.

Holt earned a BA in political science from the University of Washington and an MA in Latin American history from the University of London.

Jake Singleton

Jake Singleton

Chief Financial Officer

Jake Singleton joined The Joint in 2015 as corporate controller and was appointed Chief Financial Officer in 2018. During his tenure, he has been responsible for the full accounting operations, including the production of timely financial statements and related SEC filings and maintenance of a comprehensive set of internal controls designed to mitigate risk and enhance the accuracy of the company's reported financial results. He brings technical accounting knowledge, robust experience in Sarbanes-Oxley internal control implementation and compliance, and a strong SEC reporting background, all of which helps to guide The Joint in its growth as a public company.

Previously, Singleton was a senior manager with Ernst & Young. During his 10 years in its Assurance & Audit practice, he focused on serving public companies and assisting in raising capital through debt and equity offerings. Singleton also gained international experience in EY's Capital Markets transactional accounting group during a two-year rotation in the United Kingdom, where he focused on US GAAP & SEC reporting compliance for foreign entities raising capital in the United States. 

Singleton earned both a BA and masters of accounting from the University of Arizona and holds an active certified public accountant (CPA) license in Arizona and California.

Charles Nelles

Charles Nelles

Chief Technology Officer

Charles Nelles joined The Joint in 2022. Prior to that, he held the role of vice president of technology at American Express Global Business Travel, where he was responsible for oversight of its global technology infrastructure and service delivery processes supporting corporate travel, expense management, meetings & events and global business consulting. Nelles also held various executive and technology roles at Western Union, in addition to serving in various leadership capacities at several healthcare organizations, such as The Children's Hospital of Denver and PacifiCare Health Systems.

Nelles earned a BA in business administration from the University of Phoenix in 2003. He is also a certified project management professional (PMP) per the Project Management Institute.

Krischelle Tennessen

Krischelle Tennessen

Chief Human Resources Officer

Krischelle Tennessen joined The Joint in 2023. Prior to joining the team at The Joint, Tennessen held the role of senior vice president of human resources at Five Below. There she was instrumental in designing a human resources strategy to support the corporate vision of explosive growth by tripling the number of locations and doubling sales volume, while supporting up to 40,000 employees across 41 states. She also served as CHRO for Marvin Windows and Doors and in HR roles of increasing responsibility at Kum & Go, Walmart and Target.

Tennessen received her bachelor's degree in human resource management from Winona State University, as well as a master's degree in organizational management from University of Phoenix.

Jorge Armenteros

Jorge Armenteros

Senior Vice President of Operations

Jorge Armenteros has been with The Joint since January 2017. He has more than 40 years of franchise experience. Prior to joining The Joint, Armenteros was senior vice president of franchise operations and development at Compero USA Corporation. He was also founder and CEO of Tri-Brand Management Group, LLC, an operator of franchised Dunkin Donuts, Baskin-Robbins and Togo’s locations in Orlando, Florida.

Steve Knauf, DC

Steve Knauf, DC

Vice President of Chiropractic and Compliance

Dr. Steve Knauf began working at The Joint in 2011. After spending four years as a chiropractor with The Joint, he took the role of senior doctor of chiropractic for 13 clinics. He has received several promotions and is now vice president of chiropractic and compliance. In this role, he ensures regulatory and standards compliance for the franchise network while contributing to the growth of the system through strong relationships with chiropractic schools, associations and boards.

Dr. Knauf earned a BS and Doctor of Chiropractic from Northwestern Health Sciences University.  In August 2017, he was appointed by the governor to serve on the Arizona Board of Chiropractic Examiners, a position which he continues to hold.

Mark Miller

Mark Miller

Vice President of Real Estate & Construction

Mark Miller joined The Joint in 2021, with over three decades of experience in strategic store expansion. Prior to joining The Joint, Miller served as vice president of real estate and development at Veggie Grill, where he was responsible for opening a record number of restaurants in 2019, including the company's first sites in New York City and Boston. Preceding Veggie Grill, Miller opened 120 to 130 locations a year with Panda Restaurant Group as vice president of real estate. Miller also spent 15 years at CVS as vice president of real estate.

Miller earned a BA in finance and management from Central Michigan University and an MBA in finance from Wayne State University.

Eric Simon

Eric Simon

Vice President of Franchise Sales & Development

Eric Simon has been with The Joint since November 2016. He has 20 years of franchise experience with brands such as AAMCO, FRANdata and The UPS Store/Mail Boxes Etc. Simon was also a franchisee and area developer for Extreme Pita, which enabled him to gain important experience for the role he now has with The Joint.

Simon earned a BA from the University of Rhode Island.