Platinum Equity
Mergers. Acquisitions. Operations.

Mergers. Acquisitions. Operations.

Leadership

The median tenure among Platinum Equity Partners and Principals is 11 years. This dedication is a driving force behind Platinum’s continuity, consistency, and shared vision. 

The Partners and Principals lead in-house teams and guide every facet of Platinum’s strategy, from investment theses and deal processes to portfolio development and financial management.

  • Tom Gores
  • Mary Ann Sigler
  • Mark Barnhill
  • John Diggins
  • Robert Joubran
  • Eva Kalawski
  • Bryan Kelln
  • Jacob Kotzubei
  • Johnny Lopez
  • Philip Norment
  • Louis Samson
  • Robert Wentworth
  • Robert Wymbs
  • Dave Aroesty
  • Stephanie Barter
  • Paul Bridwell
  • Adam Cooper
  • Roger House
  • Robert Klap
  • Dan Krasner
  • Renee Koontz
  • Bastian Lueken
  • Scott McCarthy
  • Mike Scott
  • Kevin P. Smith
  • Mark Wiesenthal
  • Eric Worley
  • Marc Yassinger
  • Steve Zollo
Tom Gores

Tom Gores

Chairman & CEO

Tom Gores founded Platinum Equity in 1995 and his guidance, core philosophies, and strong principles drive the strategic development and direction of both Platinum and its portfolio.

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“The ability to move on multiple fronts concurrently has been one of the single biggest factors to our success.”
Mary Ann Sigler

Mary Ann Sigler

Chief Financial Officer

Mary Ann Sigler  is responsible for overall accounting, tax, and financial reporting as well as managing strategic planning projects for Platinum Equity. In addition to these responsibilities, Ms. Sigler is the firm’s Chief Compliance Officer. 

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Mark Barnhill

Mark Barnhill

Partner

Mark Barnhill manages functions connected to capital raising, fund administration, and corporate and external affairs for Platinum. He also is the senior relationship manager with Platinum’s investors. 

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John Diggins

John Diggins

Partner

John Diggins is responsible for leading business development efforts at Platinum, as well as growing the revenue base of Platinum’s operating companies and identifying opportunities for them to build market advantages. 

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Robert Joubran

Robert Joubran

Partner

Robert Joubran is responsible for guiding the strategy and growth of a key group of Platinum portfolio companies. 

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Eva Kalawski

Eva Kalawski

Partner, General Counsel and Secretary

Eva Kalawski  oversees Platinum’s in-house legal staff and is responsible for addressing legal issues relating to diligence, M&A, and transitions, as well as the legal affairs of its portfolio companies. 

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Bryan Kelln

Bryan Kelln

Partner

Bryan Kelln  is President of Portfolio Operations and is responsible for all aspects of business strategy and operations at Platinum Equity’s portfolio companies. 

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Jacob Kotzubei

Jacob Kotzubei

Partner

Jacob Kotzubei leads a team of professionals through the entire acquisition execution process, directs selected divestiture activities, is a board member of many of Platinum’s portfolio companies, is a member of the Platinum Investment Committee, and shares responsibility for managing limited partner relationships. 

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Johnny Lopez

Johnny Lopez

Partner

Johnny O. Lopez is a member of Platinum’s Investment Committee, continues to actively pursue significant M&A transactions across multiple industries, mentors transaction teams, and is increasingly involved in the firm’s business development efforts. Mr. Lopez is also a lead sponsor of Platinum’s investment in public securities for control.

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Philip Norment

Philip Norment

Partner

Phil Norment is a member of Platinum’s Investment Committee and is a senior advisor on specific operational initiatives throughout the portfolio. He is also the senior executive responsible for evaluating acquisition opportunities and integrating new acquisitions into the portfolio. 

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Louis Samson

Louis Samson

Partner

Louis Samson leads Platinum Equity’s New York-based investment team, manages the operations of the New York office, and is a member of the Investment Committee. In his role, Mr. Samson oversees all financial, operating, tax, and legal aspects of M&A transactions executed by his team. Additionally, together with the Operations Team, he provides oversight to the portfolio companies for which he led the acquisition.

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Robert Wentworth

Robert Wentworth

Partner

Robert Wentworth participates in senior level M&A activities for Platinum Equity and is a member of the Investment Committee. 

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Robert Wymbs

Robert Wymbs

Partner

Robert Wymbs manages strategic divestiture opportunities, working with Platinum’s portfolio management, business development and strategic planning groups to examine potential exits and execute divestiture transactions. 

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Dave Aroesty

Dave Aroesty

Principal

Dave Aroesty is responsible for evaluating operational turnaround opportunities in the hospitality industry and other sectors in which real estate provides a strong element of downside protection to the investment thesis.

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Stephanie Barter

Stephanie Barter

Principal

Stephanie Barter oversees Platinum Equity’s in-house M&A Operations group, a team comprising functional experts across a wide range of operational disciplines that conducts due diligence on prospective acquisitions.

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Paul Bridwell

Paul Bridwell

Principal

Paul Bridwell is responsible for restructuring and transition initiatives at newly acquired portfolio companies.

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Adam Cooper

Adam Cooper

Principal

Adam Cooper is responsible for aspects of financial due diligence and also often leads the structuring and execution of acquisition and divestiture transactions. As a member of the operating committee for certain portfolio companies, he also has responsibilities related to post-acquisition monitoring and oversight of financial performance.

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Roger House

Roger House

Principal

Roger House is responsible for evaluating operational turnaround opportunities in the hospitality industry and other sectors in which real estate provides a strong element of downside protection to the investment thesis.

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Robert Klap

Robert Klap

Principal

Robert Klap is based in Platinum Equity’s London office and is involved in the firm’s deal origination and investor relations activities.

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Dan Krasner

Dan Krasner

Principal

Dan Krasner is responsible for the structuring and execution of acquisition and divestiture transactions. As a member of the operating committees for portfolio companies, he also has responsibilities related to post-acquisition monitoring and oversight of add-on and divestiture transactions.

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Renee Koontz

Renee Koontz

Principal

Renee Koontz is responsible for managing the transition of newly acquired companies into Platinum Equity’s portfolio.

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Bastian Lueken

Bastian Lueken

Principal

Bastian Lueken heads Platinum’s European M&A activities. 

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Scott McCarthy

Scott McCarthy

Principal

Scott McCarthy is responsible for financial due diligence and supports the structuring and execution of acquisition and divestiture transactions. As a member of the operating committee for certain portfolio companies, he also has responsibilities related to post-acquisition monitoring and oversight of financial performance

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Mike Scott

Mike Scott

Principal

Mike Scott takes responsibility for leading a team that transitions new acquisitions into the portfolio. 


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Kevin P. Smith

Kevin P. Smith

Principal

Kevin P. Smith is Head of Debt Capital Markets and is responsible for all debt capital placement and related corporate finance activity for new and existing portfolio companies. 

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Mark Wiesenthal

Mark Wiesenthal

Principal

Mark Wiesenthal is responsible for evaluating operational turnaround opportunities in the hospitality industry and other sectors in which real estate provides an element of downside protection to the investment thesis. He is a member of the group responsible for the acquisitions and operations of Platinum Equity’s hotel portfolio. 

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Eric Worley

Eric Worley

Principal

Eric Worley is responsible for financial due diligence and supports the structuring and execution of acquisition and divestiture transactions. As a member of the operating committee for certain portfolio companies, he also has responsibilities related to post-acquisition monitoring and oversight of financial performance.

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Marc Yassinger

Marc Yassinger

Principal

Marc Yassinger is a member of the firm’s in-house tax department and is responsible for addressing tax issues relating to the firm’s M&A activities as well as the operations of the firm’s portfolio companies.

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Steve Zollo

Steve Zollo

Principal

Steve Zollo is a senior member of Platinum’s M&A Operations team and is responsible for the Corporate IT function and Group Purchasing Program. 

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