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O2 Investment Partners Announces Appointment of Rob Calice as Senior Director, Portfolio Operations

Reported by Business Wire
Nov 5, 2026· 2 min read
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Key Takeaways
  • • O2 Investment Partners, a Midwestern private equity firm focused on lower middle-market niche services, technology, and select industrial companies, has appointed Rob Calice as Senior Director, Portfolio Operations.
  • • Calice will work directly with O2's management teams on a range of initiatives, with a particular focus on organic growth across the portfolio.
  • • Calice previously co-founded Cimarron Investment Group, where he served as CEO through the company's transition to institutional ownership, and held commercial and strategy roles at Danaher and GE.
  • • Managing partner Micah Dawson described Calice as bringing a full suite of operating capabilities and an entrepreneurial background suited to partnering with founder-led portfolio companies.
Summary
O2 Investment Partners, based in Bloomfield Hills, Michigan, announced the appointment of Rob Calice as Senior Director, Portfolio Operations, according to a Business Wire release. O2 describes itself as a Midwestern private equity firm that invests in lower middle-market niche services, technology, and select industrial companies, typically seeking businesses with earnings growth potential and a clear path to creating shareholder value.

In the role, Calice will work directly with O2's management teams on a variety of initiatives, with a particular focus on organic growth. Micah Dawson announced the addition, saying the firm was "extremely excited to have Rob on board" and that Calice "brings a full suite of operating capabilities." Dawson said Calice's entrepreneurial experience makes him a natural partner to the entrepreneurs who lead O2's companies, and that the firm expects him to "drive tremendous value across the O2 portfolio."

Prior to joining O2, Calice co-founded Cimarron Investment Group, where he acquired a founder-led business and led it as CEO through its transition to institutional ownership. He previously served as Chief of Staff at CFS Brands, where he drove the company's commercial transformation. Earlier in his career, he held commercial and strategy leadership roles at Danaher and GE. He holds an MBA from the University of Chicago Booth School of Business and a B.S. from Marquette University.

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Sources

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Business Wire O2 Investment Partners Announces Appointment of Rob Calice as Senior Director, Portfolio Operations