John Corsi

Experience

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  US Army

  Jan 1986 - Jan 1990

  Platoon Leader, Executive Officer, Operations Officer
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  McKinsey & Company

  Jan 1994 - Jan 1997

  Engagement Manager

  Engagement Manager, Business Unit Strategy, Purchasing Strategy, and Logistics (1995–1997)Pricing, Sales Force Effectiveness, and Continuous Improvement (1994–1995)

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  National Gypsum Company

  Jan 1997 - Jan 2000

  Director of Strategic Planning & Regional Manufacturing Manager

  Responsible for the manufacturing performance of three recycled paper mills and six gypsum wallboard manufacturing plants.

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  KETERA TECHNOLOGIES INC

  Jan 2000 - Jan 2002

  Interim CEO and Vice President Supplier Sales & Business Development

  Startup e-procurement joint venture between American Express, Kleiner Perkins, and Ventro Corporation.- Served as Interim CEO and subsequently led key functions within the company. Served as VP Business Development for Ventro Corp. during incubation phase.

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  Accenture

  Jan 2002 - Jan 2004

  Chief Operating Officer - Connection to eBay

  Startup joint venture between eBay and Accenture providing auction management, logistics software, and services to Fortune 500 companies opening eBay as a sales channel.- Responsible for all operations functions, including finance, auctions, logistics, customer service, information technology, and professional integration services.

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  National Gypsum Company

  Jan 2005 - Jan 2022

  Co-owned P&L responsibility for ~80% of the company’s revenue. Managed VP Technology & Innovation, Regional Manufacturing Managers, and Directors of Sustainability, Engineering, Procurement, Supply Chain, and Logistics.- Achieved average year/year improvement in EBITDA. Led EBITDA Improvement Teams resulting in significant annual savings through raw material, labor cost reductions, and freight cost reductions. - Managed through the COVID-19 Pandemic with decisive action on cost control and employee safety. - Immediately cut labor costs at start of pandemic, with furloughs across eight plants. Hired back furloughed employees within one year.- Cut capital expenditures, preserving cash flow to ensure survival. - Created Customer Service Excellence and Efficiency Teams, bringing together sales and operations teams to work together. Cut missed orders and reduced changeover downtime by increasing Make-To-Order SKU’s and reducing Stock SKU’s. Show less Managed directly three Regional Manufacturing Managers and Directors of Safety, Quality & Continuous Improvement, Engineering, Supply Chain, Logistics, Procurement, and SAP. Led weekly meetings including CFO, VP Sales & Marketing, Sales Directors, and direct reports, generating strategies to service customers and optimize EBITDA.- Served as Company Champion for SAP Implementation, replacing legacy systems into one instance of SAP ECC on Hana database.- Achieved record performance in safety and quality, the best in the history of the company in both, including Total Case Incident Rate and Percent Defective.- De-certified eight union plants including Teamsters, United Steelworkers, and Boilermakers, transitioned to and retained non-union status. Show less

  • Senior Vice President, President of Building Products / Operations

    Jan 2020 - Jan 2022

  • Vice President, Manufacturing Operations & Engineering

    Jan 2011 - Jan 2020

  • Vice President, Business Development

    Jan 2005 - Jan 2011
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  Charter Next Generation

  Nov 2022 - Dec 2024

  Chief Operations Officer

  Directly managed EVP Operations & Engineering, Chief Procurement Officer, VP Sustainability, VP Technical, VP's Manufacturing (2), and Director Logistics with a total team of 2,000. Continued the alignment and integration of two recently-merged companies.- Achieved year-over-year increase in EBITDA. Launched Margin Improvement Teams resulting in annual savings through raw material, technical design, freight, recycling, and packaging cost savings. - Increased share price valuation. - Designed and produced mono-material packaging which achieved volume growth year-over-year and earned "how to recycle" letters of designation for CPG customers. - Implemented Lean tools, including Manage for Daily Improvement (MDI) and Single Minute Exchange of Dies (SMED) resulting in increase in Gallup Engagement scores and reduction in changeover times. Show less

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  Grenzebach Group

  Mar 2025 - now

  Chief Executive Officer - North America

  Responsible for the profitable growth of Grenzebach across all businesses in North America. This includes Grenzebach Corporation Glass & Building Materials, Millennium Control Systems, Millennium Power & Energy, and Grenzebach Data Center Solutions.