Contributors

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Host

Craig Castelli

Craig Castelli is the Founder and CEO of Caber Hill Advisors and host of the Caber Hill M&A Podcast. He launched Caber Hill in 2014 to solve a major challenge for business owners: the lack of experienced M&A advisors focused on small- and middle-market companies. With a client-first approach and expert team, Craig has built one of the most respected advisory firms in the space. With 20+ years of M&A, business development, and leadership experience, Craig has guided hundreds of business transitions across healthcare, business services, and beyond. His podcast offers technical insight and real-world perspective drawn from years in the field. Earlier in his career, Craig held leadership roles at Bridge Ventures and Siemens Healthcare. He holds a BBA from Marquette University, is a Certified Transaction Advisor, and serves on several nonprofit boards. Based in Chicago, Craig enjoys skiing, running, and chasing his kids—or golf balls—on the weekends.

https://caberhill.com/team/craig-castelli/

Guests

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Guest

Amir Hadar

Amir brings years of leadership experience across companies of all sizes. He previously served as CEO of one of the largest manufacturer-owned retail hearing aid chains in the United States. In early 2014, he co-founded Hearing Health USA, which quickly earned recognition as one of the fastest-growing and largest privately held retail networks in the hearing aid industry. In 2019, his organization, Belsono/Hearing Health USA, merged with and was later fully acquired by a private equity firm.

Currently, Amir is the co-founder of Mountain Lakes Management, LLC, where he leads strategic initiatives across the hearing healthcare, real estate, and automotive sectors. MLM Hearing now stands at the forefront of these efforts.

https://www.linkedin.com/in/amir-hadar-5999a426/
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Guest

Bob Armbruster

Bob founded Clean Team in 1996 and has over 20 years of experience in the janitorial industry. He is an active member of various industry organizations, including the Building Service Contractors Association (BSCAI). He has spoken on several topics related to the janitorial industry at BSCAI conventions and industry magazines have interviewed Bob for articles highlighting his unique approach to customer service. Bob has also participated in product testing and development in the janitorial industry. In 2009, Bob was inducted into the Entrepreneurial & Business Excellence Hall of Fame for his work at Clean Team.

https://www.cleanteamclean.com/directory
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Guest

Brian Ludden

Brian Ludden is the founder and CEO of LUDEX and has a distinguished career marked by entrepreneurial endeavors and inspirational leadership. Brian has always attracted the highest level of talent, developing winning teams to scale successful businesses. His passion and love for card-collecting began in his early childhood and extended beyond his college baseball career.

Relying on his background as a successful trader, one who opened and managed high-profile firms, he is driven to provide innovative solutions to the card-collecting space.

Brian graduated from Northern Illinois University with a degree in Finance. He is a member of the Chicago Board Exchange, Chicago Mercantile Exchange, as well as the Chicago Board of Trade. Additionally, he has served on the board of several non-profits, including Urban Options and has consulted for inner-city youth athletic programs. Brian currently sits on the board of The Giving Project, a non-profit organization.

https://www.linkedin.com/in/brian-ludden-78b0bb6a/
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Brian Zielinski

Brian is an innovator with diverse business and military leadership experience. He has served as a Regional Sales Director and Director of Marketing for two multi-billion-dollar healthcare companies. In addition to his experience growing large brands, Brian has devoted much of his career to helping small-and-medium sized healthcare practices build individualized strategies to win in their local markets. As a Signal Officer in the US Army, Brian executed missions in Afghanistan and Kuwait that required him to assess new technologies and improve network infrastructure. Through his business and military experience, Brian saw the importance of identifying the right partner vendors to solve problems. He founded ShapeConnect to simplify the process of finding the best B2B software and services for an organization’s needs.

https://www.linkedin.com/in/brian-zielinski07/
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Guest

Darrin Shillair

Darrin purchased Specialty Sales in September 2018 with two primary goals: strengthen our operations and grow our customer base. Since then, his incredible team members have made significant progress toward those goals and we continue to set our sights even higher. He's particularly energized by change and project management, strategic planning, and operations efficiency. Prior to owning and operating Specialty Sales, Darrin held several operations leadership and change management roles across a variety of industries.

https://www.linkedin.com/in/darrinshillair/
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Dr. Abhishek Nagaraj

Dr. Raj is an entrepreneur with a deep calling for dentistry as his primary focus. He is also a full arch Implant surgeon and helps mentor and develop his associate doctors into Super-GP’s by removing barriers to their success and empowering them to become elite clinicians over time. He envisions a world where dentists are in charge of their own destiny. Under his leadership- the practices have grown exponentially, and the doctors are empowered to become clinical leaders. He actively works with seasoned practice owners to help optimize their practices and become more profitable as well as create cultural and financial alignment to help their practices grow to even greater heights.

https://www.areodental.com/leadership/abhishek-nagaraj/
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Dr. Anushka Gaglani

Dr. Anushka Gaglani is a co-founder, co-CEO, and visionary at Areo Dental Group. She and Dr. Nagaraj (ie Dr Raj) opened their first practice at the end of 2015 and enjoyed patient care and transforming patient experiences so much that Areo Dental Group's core value is centered around same-day, quality comprehensive care, and stellar patient experiences. There is nothing she loves more than having a fearful patient love the dentist and supporting other dentists and team members to give patients the same type of experience. Under her leadership, Areo Dental Group was has been on the Inc. 5000 list multiple times. She has been interviewed on numerous podcasts as an expert in her field, and recently started her own podcast with Dr Raj entitled "Filling you In: A Dental Podcast with A²"

https://www.areodental.com/leadership/anushka-gaglani/
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Dr. Erica Person

Dr. Erica Person, who specializes in hearing aid and tinnitus management, has been a private practice owner since 2005. She welcomes both adult and pediatric patients while operating in an unbundled service delivery model. Her dedication and commitment to the audiology field extends beyond the Flex Audiology walls. Dr. Person thoroughly enjoys hosting The Unbundled Audiologist podcast. Through this platform, she teaches other private practice owners how to thrive in the current hearing care environment. Additionally, Dr. Person is one of the founding members of the Indiana Audiology Coalition and presently serves as their president. She is also the current president of the Audiology Practice Standards Organization 2025.

https://flexaud.com/meet-the-team/erica-person
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Maria Melone

Maria Melone is a leading M&A advisor in healthcare, with deep knowledge of the dental industry. Her mission is to help both individual businesses and multi-site groups navigate the complex landscape of capital or strategic transactions.

Maria has extensive transactional knowledge and brings a wide breadth of skills to the table – particularly in valuation. As a Certified Valuation Analyst, she is an expert in helping clients understand what their business is worth.  She determines value based on tangibles like equipment, actual cash flow, and profitability.  But she also understands that a more complete picture of a businesses’ value includes much more, including variables like business climate, market demand, staff retention, customer base, payor base and competition. Outside of work, Maria enjoys giving of her time and talent to a variety of non-profits, playing soccer & pickleball, and creating feasts for friends and family.

https://caberhill.com/team/maria-g-melone/
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Nick Olsen

Nick Olsen is the Managing Director of Cornerstone International Alliance (CIA), the only global partnership of M&A firms focused on the lower middle market. He has worked with hundreds of M&A professionals and organizations from around the world to develop and grow a high-value network of firms who advise their clients on the largest financial transaction of their life…the sale of their company.

With over 19 years of business development and sales experience, Nick has earned the respect and confidence of his partners to guide them in leveling up their practices. Nick’s work has helped some of the world’s best lower middle market firms, owners, and advisors, who have transacted on over 4,000 deals collectively. With his guidance and support, his partners surpassed over $1.1 billion in total enterprise value in the past two years, and changed the lives of over 300 business owners.

https://www.linkedin.com/in/nick-olsen2328/
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Peter J. Holton

Managing Director of Caber Hill Advisors, Peter J. Holton has over 20 years of experience in sales, operations and M&A within the facility service and manufacturing industries. Prior to joining Caber Hill, Mr. Holton worked with Craig Castelli at Bridge Ventures in Chicago. He began his career working in the construction industry, spending nearly a decade at Rose Paving Company where he held both regional and national positions in a variety of roles, including business development, operations, sales and mergers and acquisitions. Mr. Holton has extensive experience in mergers and acquisitions, business development, operations, and sales management, and is an expert at negotiating complex contracts and developing successful business strategies. He also has extensive personal experience working with and advising family businesses.

https://caberhill.com/team/peter-j-holton/
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Tim Murch

Tim is the CEO and Managing Partner of 4M Building Solutions, which he has led to become a multi-regional industry leading company. His passion for the industry is demonstrated by driving 4M’s strategic plan and vision. Tim also has served or serves on many boards, including the Board of Directors of Building Services Contractors International (BSCAI), Building Owners and Managers Association (BOMA), the World Federation of Building Services Contractors (WFBSC), and UMB Bank.

https://www.linkedin.com/in/timmurch/