Management Team
Date Requested: Apr 18 2019 8:28 PM

Mark Hewett


Current Position:
President and CEO of Northern Natural Gas
Date Assumed Current Position: August 2002
Year Joined Northern: 2002
Previous Work Experience: Prior to joining Northern Natural Gas, Mark was employed by MidAmerican Energy Company from 1987 to 2002. He served in a number of management positions at MidAmerican Energy Company, most recently as vice president of energy trading.
Education: Mark earned a B.S. in management science from Buena Vista College in Storm Lake, Iowa.
Outside Interests: Mark is a member of the NCAA’s Men’s College World Series board of directors. Mark enjoys outdoor activities, such as hunting and fishing.
Family: Mark is a native of Iowa, is married and has four children.
    

Sara Athen


Current Position:
Vice President of Human Resources
Date Assumed Current Position: June 2017
Year Joined Northern: 2014
Previous Work Experience: Sara joined the BHE Pipeline Group as a senior attorney in 2014. Prior to joining Northern Natural Gas, Sara worked as an attorney at Snell & Wilmer, L.L.P. in Phoenix, Arizona.
Education: Sara earned a J.D. from Syracuse University in New York and a B.A. in business administration and retail management from the University of Wisconsin-Stevens Point
Outside Interests: Sara enjoys spending time with family, cooking and traveling.
Family: Sara is a native of Wisconsin, is married and has two children.
    

Tom Correll


Current Position:
Vice President of Pipeline Safety and Risk
Date Assumed Current Position: July 2016
Year Joined Northern: 2004
Previous Work Experience: Prior to joining Northern Natural Gas, Tom worked for Layne Christensen Company and Terracon Consultants in geotechnical and environmental engineering and contracting.
Education: Tom earned a B.S. in geology from Iowa State University in Ames, Iowa, and an MBA from the University of Nebraska at Omaha. Tom is a licensed professional geologist and a certified hazardous materials manager.
Outside Interests: Tom is a member of the Omaha Northwest Rotary. He enjoys a variety of outdoor activities including running, hiking and golfing.
Family: Tom has three children.

Laura K. Demman


Current Position:
Vice President, General Counsel and Regulatory Affairs
Date Assumed Current Position: May 2017
Year Joined Northern: 2014
Previous Work Experience: Prior to joining Northern Natural Gas, Laura was employed at the Nebraska Public Service Commission from 2001-2014, most recently as Director and Legal Counsel of the Natural Gas Department.
Education: Laura earned a B.A. in psychology from Creighton University in Omaha and a J.D. from the University of Nebraska College of Law in Lincoln.
Outside Interests: Laura is a member of the Budget and Planning Committee of the Nebraska State Bar Association. She enjoys musical theater and supporting her children’s activities.
Family: Laura is a native of Nebraska, is married and has three children.
    

Matt Finnegan


Current Position:
Vice President of Resource Management
Date Assumed Current Position: September 2016
Year Joined Northern: 2016
Previous Work Experience: Prior to joining Northern Natural Gas, Matt held a variety of management positions with Berkshire Hathaway Energy Company affiliates including president of Kern River Gas Transmission Company and general manager of MidAmerican Energy Company’s Walter Scott, Jr. Energy Center.
Education: Matt earned a B.S. in mechanical engineering from The University of Iowa in Iowa City, Iowa, and an M.B.A. from the University of Iowa. Matt is a licensed engineer in Iowa.
Outside Interests: Matt is a member of the School of Management Advisory Council for the graduate business school at the University of Iowa. Matt and his wife are active members of St. Peter’s Catholic Church in Council Bluffs, Iowa. Matt is an avid sports fan, and enjoys golfing, running, and coaching youth sports.
Family: Matt is a native of Iowa, is married and has three children.

Tom J. Halpin


Current Position:
Vice President of Marketing
Date Assumed Current Position: January 2012
Year Joined Northern: 1997
Previous Work Experience: Prior to joining Northern Natural Gas, Tom spent 10 years employed by Amoco Corporation in various engineering and business reporting functions. Since joining Northern Natural Gas, Tom has held positions in engineering and construction, facility planning, business development, and pricing and storage.
Education: Tom earned a B.S. in mechanical engineering from the University of Notre Dame in Notre Dame, Indiana. He earned his M.B.A from Creighton University in Omaha, Nebraska
Outside Interests: Tom and his wife serve as board members for a national marriage and family organization and are active volunteers at St. Vincent de Paul Catholic Church in Omaha. Tom is an avid sports fan and enjoys coaching.
Family: Tom is a native of Illinois, is married and has four children.
    

Kirk L. Lavengood


Current Position:
Vice President of Business Development
Date Assumed Current Position: January 2010
Year Joined Northern: 2003
Previous Work Experience: Prior to joining Northern Natural Gas, Kirk worked at MidAmerican Energy Company as director of short-term trading and as director of gas supply planning. Kirk also practiced law in Detroit with the law firm Kerr, Russell and Weber, PLC, before joining MidAmerican Energy Company. Prior to practicing law, Kirk spent nine years in various marketing and financial capacities with ANR Pipeline Company and ANR Storage Company.
Education: Kirk earned a B.S. in business from Central Michigan University in Mount Pleasant and a J.D. from Wayne State University in Detroit.
Outside Interests: Kirk likes to play golf, ski, read and travel.

Joe M. Lillo


Current Position:
Vice President of Finance
Date Assumed Current Position: August 2002
Year Joined Northern: 2002
Previous Work Experience: Joe was employed by Berkshire Hathaway Energy Company beginning in 1996 as manager of financial reporting, then as vice president and controller. Prior to joining the company, Joe was a senior associate with Coopers & Lybrand.
Education: Joe earned a B.S. and an M.S. in accounting from Pace University in New York City.
Outside Interests: Joe is a certified public accountant and a member of the American Institute of Certified Public Accountants and the Nebraska Society of Certified Public Accountants.
Family: Joe is a native of New York, is married and has four children.

     Nick Marquardt

     
Current Position:
Vice President of Engineering
Date Assumed Current Position: November 2017
Year Joined Northern: 2006
Previous Work Experience: Estimating Engineer with Kiewit Industrial Company, 2 years; Contract Engineer with Aerotek at Northern Natural Gas, 1 year.
Education: Nick has a Bachelor of Science in Mechanical Engineering and Master of Business Administration.
   

Kent E. Miller

     
Current Position:
Vice President of Customer Service and Business Development
Date Assumed Current Position: January 2010
Year Joined Northern: 1981
Previous Work Experience: Kent has held various management positions at Northern Natural Gas in engineering, facility planning, pricing and storage, and marketing.
Education: Kent has a B.S. in civil engineering from Iowa State University in Ames.
Outside Interests: Kent has held leadership and service positions in his local church and volunteers his time at a family counseling organization in Omaha.
Family: Kent is a native of Iowa, is married and has two children.
    

Brian J. Mundt


Current Position:
Vice President of Field Operations
Date Assumed Current Position: February 2013
Year Joined Northern: 2009
Previous Work Experience: Prior to joining Northern Natural Gas, Brian was employed by MidAmerican Energy Company from 1993‑2009, most recently as general manager at the Walter Scott, Jr. Energy Center in Council Bluffs, Iowa.
Education: Brian earned a B.S. in mechanical engineering from South Dakota State University in Brookings, and an M.B.A. from the University of Nebraska at Omaha.
Outside Interests: Brian and his wife are active members of St. Columbkille Catholic Church in Papillion, Nebraska. Brian enjoys a variety of outdoor activities such as hunting, snow skiing and water sports, as well as coaching youth sports.
Family: Brian is a native of South Dakota, is married and has four children.

Royce Ramsay


Current Position:
Vice President of Operations
Date Assumed Current Position: October 2002
Year Joined Northern: 2002
Previous Work Experience: Prior to joining Northern Natural Gas, Royce spent 20 years employed at Texas Gas Transmission Corporation. Royce has 25 years of experience in the natural gas pipeline industry in various positions, primarily involving operations.
Education: Royce earned his B.S. in mechanical engineering from Rose-Hulman Institute of Technology in Terre Haute, Indiana.
Outside Interests: Royce enjoys golf and is a past United Way board member in Lafayette, Louisaina.
Family: Royce is a native of Indiana, is married and has two children.
    

     Bill Sonnleitner


Current Position:
Vice President of Information Technology
Date Assumed Current Position: April 2018
Year Joined Northern: 2016
Previous Work Experience: Bill has held various management positions at Berkshire Hathaway Energy in engineering, and most recently as Director of Controls and Electrical Technical Field Services with Northern Natural Gas.
Education: Bill has a B.S. in electrical engineering from Iowa State University in Ames, and is a licensed professional engineer in the state of Nebraska.
Outside Interests: Bill enjoys spending time with family and supporting his children’s activities.  Bill and his wife are active members of their local church in Omaha, Nebraska.  He enjoys a variety of outdoor activities such as running, skiing and golfing.
Family: Bill is a native of Iowa, is married and has four children.
    

LD Stephens


Current Position:
Vice President of Technical Services
Date Assumed Current Position: July 2016
Year Joined Northern: 1982
Previous Work Experience: With Northern Natural Gas, LD has held positions in field operations and maintenance, integrity and compliance, field engineering and construction, operation and maintenance supervision, facility planning, business development, field operations management, oil pipeline operations management, and pipeline expansion project management.
Education: LD earned a B.S. in industrial technology from Southwestern Oklahoma State University.
Outside Interests: LD supports charities such as the Marines Toys for Tots, various veteran’s organizations, and the American Red Cross.
Family: LD is a native of Oklahoma, is married with two children.