Management Team

The Welch Products Management Team…

Lyle Jensen 

Chief Executive Officer 


Mr. Jensen has a history of success in leading growing companies and has served as CEO of GreenMan Technologies and its subsidiary companies since April 12, 2006.  Mr. Jensen has served on the board of directors for GreenMan Technologies since May 2002.


Prior to accepting his current title as CEO of GreenMan Technologies, Mr. Jensen was Executive Vice President/Chief Operations Officer of Auto Life Acquisition Corporation, an automotive after market leader of fluid maintenance equipment.


Prior to that he was a Business Development and Operations Consultant after holding executive roles as Chief Executive Officer and minority owner of Comtel and Corlund Electronics, Inc.


He also served as President of Dynaco Corporation from 1988 to 1997; General Manager of Interconics from 1984 to 1988 and various financial and general management roles within Rockwell International from 1973 to 1984. 

Charles Coppa 

Chief Financial Officer 


Mr. Coppa is GreenMan's Chief Financial Officer, Treasurer and Secretary and has served in these roles since March 1998. From October 1995 to March 1998, he was the company's Corporate Controller.


From July 1994 to October 1995,  Mr. Coppa served as Chief Financial Officer and Treasurer of Food Integrated Technologies, a publicly-traded development stage company


Prior to joining Food Integrated Technologies, Inc., Mr. Coppa served as Corporate Controller for Boston Pacific Medical, Inc., a manufacturer and distributor of disposable medical products, and Corporate Controller for Avatar Technologies, Inc., a computer networking company.

Timothy Mahoney 

VP, Channel Development and Strategic Partnerships 

President, NSSI 


Mr. Mahoney has 15 years of progressive business leadership and sales experience.  He is the architect of the Company's CERVIS licensing strategy.  His responsibilities for Welch include leading the Company's global marketing efforts, lobbying operations, sales strategy, government relationships, and NSSI operations. 


Prior to joining Welch, Tim held various positions with Convergent Communications, a high growth communications business.  His responsibilities included a number of progressive sales management roles and a leadership role of leading the Midwest Regional office as its VP and General Manager.  During his tenure, Mr. Mahoney was instrumental in growing the company's regional presence and integrating a number of acquisitions into a single, successful operation. 


Tim is an avid athlete, finishing the Chicago marathon and serving as the past team captain of the Iowa State Baseball team. He is active in his community, directly supporting and playing an active role in various youth athletics programs.


Mr. Mahoney earned a bachelor's degree from Iowa State University and has completed coursework toward his MBA.  He has also completed professional sales training with Burton Sales Training and Franklin Covey. 


Shannon Godwin 

Director of Corporate Communications & Marketing  


Mr. Godwin provides business analysis, market research and due diligence for the Company, and has created an integrated communication solution utilizing the Internet and a database driven website in order to support Welch's aggressive growth strategy. 


He has created customized playground design and proposal tools exclusively for Welch to generate safety-surfacing proposals.  His responsibilities include driving the company's marketing strategy, product branding, implementing a custom web-enabled Customer Relationship Management (CRM) tool to support the sales and installation of products and services to 370 school districts in Iowa. 


Prior to joining Welch's management team, Mr. Godwin co-founded Lighthouse Communications, a regional provider of broadband data communications services for medium sized business customers.  As a founder of this organization, Mr. Godwin was responsible for sales, marketing, financial and administration leadership.  He developed the organizations HR and financial policies, product branding and market position, compensation structures, and structured the capitalization of the company with venture capital financing.  He served as a key member of the executive team and board of directors. 


Mr. Godwin received his bachelor's degree from Iowa State University majoring in management with an emphasis on information technology.  He has completed Deming Total Quality Management (TQM) training classes.  In 2000 Mr. Godwin was selected as a finalist for Ernst and Young's Entrepreneur of the Year award. 



LaVern Holtorf 

Vice President of Operations 


Mr. Holtorf has provided leadership and expertise to many aspects of Welch Products manufacturing and product development divisions for over six years.  LaVern's efforts have been instrumental in designing and implementing new products for Welch's highway construction division, NTACT, as well as the design, development and implementation of Welch's patented rolling press.    


As VP of Operations, LaVern, manages playground construction projects, contractor relationships, labor scheduling and quality control for playground surfacing installations.  His attention to detail led him to create the installation procedures used today for Welch's fastest growing product line, DuroMat Extended Life™ playground safety tiles.    


Mr. Holtorf received his electronics degree from Devry Technical Institute in Chicago Illinois and went on to become the communications manager for the Iowa Department of Transportation.  LaVern's team at the Iowa DOT led the nation in developing the first statewide, integrated wireless communication solution utilizing voice and data over the same VHF channel.  


LaVern is active in both his church and community.  He has served as a City Council member, Community Development Board member and Church Deacon as well as owned a small business in his community.    


Guy Varble 

Plant Manager 


Mr. Varble is an entrepreneurial professional, founding and operating two companies before joining the management team at Welch.  His business experience includes managing outcomes to conclusion, managing suppliers and vendors, financial management, portfolio management and business analysis.  He is a strong independent worker who manages himself and others to achieve favorable outcomes. 


Before founding his most recent venture, Mr. Varble served as a Business Analyst for Proctor & Gamble Corporation.  During his tenure, his responsibilities included budgeting, forecasting and analysis for cross-departmental projects.  He monitored, analyzed, and reported production and inventory for seven distinct cost centers representing over $180 million in production.  While serving at Proctor & Gamble, Mr. Varble developed effective budget-to-actual management, cost management, productivity optimization, and inventory controls. 


Mr. Varble obtained his MBA degree from Pepperdine University in Malibu, CA.  He received his Bachelor degree in Economics and Business from Westmont College in Santa Barbara, CA.  He is well versed in several business software applications including SAP, Oracle, and Microsoft Office Suite, among others, and is bi-lingual, speaking English and Spanish. 

David Albers 

Accounting Manager 


Mr. Albers oversees the accounting functions of Welch Products.  His diverse background in operations and accounting for companies from financial to recycling has prepared him well for his duties at Welch Products.      


Prior to joining Welch Products, Mr. Albers served as the controller for Mid America Recycling where he worked with both plant managers and financial analysts, preparing operating budgets and financial statements for multiple divisions.    


Mr. Albers also served as Chief Operating Officer for New Engaland Financial a MetLife Company, in Minneapolis where he was responsible for the accounting, compliance and IT functions of the Midwest Division.  


Mr. Albers gained his professional accounting experience as a CPA with the public accounting firm of Schuring and Uitermarket, P.C. , in Des Moines Iowa where he performed various accounting and auditing functions for a variety of midsized companies.   

John C. Clark 



Mr. Clark is an advisor to Welch Products.  He is a business development specialist with broad manufacturing industry experience with a track record of driving multi-million dollar revenue growth. 


At Mr. Clark's control as President and CEO of Clark Industries, a steel contract manufacturing company, he led the company to 1,200% revenue growth, achieving $10 million in annual revenues before selling the company.  He was responsible for repositioning the company for greater profitability and established key relationships, drastically increasing the value of the organization.  Under his guidance, Clark Industries increased production capacity and reduced operating costs through a manufacturing agreement with a State correctional institution. 


Mr. Clark is a retired Sergeant First Class with the US Army Reserve.  He received a bachelor's degree in Business Administration, majoring in Finance, from the University of Iowa.  He has also pursued post-graduate banking and quality management education from the University of Oklahoma and University of Colorado.  Mr. Clark is involved in the community as a charter member of the Waukee Community School Foundation, serves as an advisor to the US Small Business Administration and is a founding board member of Waukee State Bank. 


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