Gary Mitchell, managing partner of the Denver-based accounting and consulting firm Anton Collins Mitchell LLP (ACM), has announced that effective Oct. 1, 2013, he will step down as the firm’s managing partner.

He has spent the past 31 years in a managing partner role and will remain in a client service role. In his place, ACM has named two partners to lead the growing firm into the future. Greg Anton, a former chairman of the American Institute of CPAs, will serve as CEO and chairman and Stacey Hekkert will serve as managing partner and president. “This is an exciting time for ACM,” Mitchell said in a statement. “Greg and Stacey are tremendous leaders and I am confident that their shared vision and guidance will ensure ACM’s future success.”

Anton is a founding partner of ACM and completed his term last year as AICPA chairman for 2011-2012. “We’re in a time of growth and opportunity,” he said. “ACM is well positioned to serve clients and continue expanding.”

Hekkert joined ACM in 2003 and was previously a partner in the Dallas office of BDO USA, LLP. She will be bringing an in-depth understanding of the internal operations, infrastructure and people at ACM. “It is my privilege to lead the talented team of professionals we have at ACM,” she said. “My passion is to help each person reach their maximum potential and with that in view, I’m looking forward to the years ahead.”

Both Anton and Hekkert credit Mitchell’s leadership for the growth the firm has experienced in the past 11 years. ACM has grown from one office and 24 people to three offices and 100 people and has been named a Best Company to Work for in Colorado and a Best Accounting Firm to Work for and a two time Fastest Growing Private Company.

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