LEADERSHIP

Meet Our Team

The GLDD Leadership Team is committed to delivering innovative, industry-leading workmanship to our clients while executing every project safely – for our employees, clients, vendors, the communities where we work, and the environment.

Photo of Lawrence Dickerson
Chairman of the Board

Lawrence R. Dickerson

Elaine Dorward-King, PhD
Director

Dr. Elaine Dorward-King

Photo of Ryan Levenson
Director

Ryan Levenson

Photo of Lasse Petterson
Director

Lasse Petterson

Photo of Kathleen Shanahan
Director

Kathleen M. Shanahan

Photo of Ronald Steger
Director

Ronald Steger

Photo of Michael Steuert
Director

Michael Steuert

Director

Earl Shipp

Chairman of the Board

Lawrence R. Dickerson

LAWRENCE R. DICKERSON spent 34 years at Diamond Offshore Drilling, Inc. (NYSE:DO), a deepwater oil and gas drilling contractor, where he served as a member of the Board of Directors from 1998, and as President and Chief Executive Officer from 2008 until his retirement in 2014. Prior to his service as President and Chief Executive Officer, Mr. Dickerson served as Chief Financial Officer, during which time he helped take the company public, and as Chief Operating Officer, during which time he gained substantial operating and commercial experience. In addition to being a seasoned executive, Mr. Dickerson has significant board experience. He has been a member of the Board of Directors of Murphy Oil Corporation (NYSE:MUR), an oil and gas exploration and production company, and Oil States International (NYSE:OIS), an oilfield equipment services company, since 2014. Mr. Dickerson is a member of the Audit and Nominating and Governance Committees at Murphy Oil Corporation and is Chair of the Compensation Committee and a former member of the Audit Committee at Oil States International. Mr. Dickerson was Non-Executive Chairman of the Board of Directors of Hercules Offshore, Inc. (NASDAQ:HERO), an offshore drilling company, from 2015 – 2016, and served from 2008 – 2012 on the Board of Directors of Global Industries, Ltd. (NASDAQ:GLBL), a subsea construction company sold to Technip in 2011. Mr. Dickerson received a B.B.A. from the University of Texas.

Director

Dr. Elaine Dorward-King

DR. ELAINE DORWARD-KING most recently was the Executive Vice President, Sustainability and External Relations at Newmont Mining Corporation (“Newmont”) (NYSE:NEM), the world’s leading gold mining company. Dr. Dorward-King has spent the majority of her career in mining and joined Newmont in 2013. Prior to joining Newmont, Dr. Dorward-King spent 20 years with Rio Tinto, one of the world’s largest diversified producers of metals and minerals, in general management and Environmental Health and Safety leadership roles. Dr. Dorward-King has over 25 years of leadership experience in creating and implementing sustainable development, safety, health and environmental strategy as well as programs in mining, chemical and engineering consulting sectors. Currently Dr. Dorward-King serves on the Board of Directors of Kenmare Resources plc (LSE:KMR, ISE:KMR); Sibanye Stillwater plc (JSE:SSW, NYSE:SBSW); and NovaGold (TSX:NG, NYSE American:NG). Dr. Dorward-King holds a Bachelor’s Degree from Maryville College and received a Ph.D. in Analytical Chemistry from Colorado State University.

Director

Ryan Levenson

RYAN J. LEVENSON is currently Principal and Portfolio Manager of Privet Fund Management LLC (“Privet Fund”). Mr. Levenson currently serves on the Board of Directors of Hardinge, Inc. Previously, Mr. Levenson served as a director of AgJunction, Inc. (TSX: AJX) from 2016 – 2019, Frequency Electronics, Inc. (NASDAQ:FEIM) from 2016 – 2017, Cicero, Inc. (OTC:CICN) from 2015 – 2017, and RELM Wireless, Inc. (NYSE:RWC) from 2013 – 2014, where he served as a member of the Audit Committee. He served as a director and member of the Compensation, Organization and Corporate Governance Committee of Material Sciences Corp. (NASDAQ:MASC) from May 2013 until its sale in March 2014, and as a member of the Board of Directors and Compensation and Audit Committees of The Middleby Corporation (NASDAQ: MIDD) from 2006 – 2012. Prior to founding Privet Fund in 2007, Mr. Levenson served as Vice President of Business Development at MSI, a privately held building products distributor and construction services company. Prior to MSI, Mr. Levenson served as a financial analyst for Cramer Rosenthal McGlynn’s long/short equity hedge fund after working at SAC Capital Advisors LLC in a similar capacity. Mr. Levenson began his career as an analyst on the sell side in small cap research for CJS Securities. Mr. Levenson earned a Bachelor of Arts from Vanderbilt University.

Director

Lasse Petterson

LASSE J. PETTERSON was named Chief Executive Officer in May 2017 and assumed the additional title of President in March 2020. He has served as a member of our Board since December 2016. Prior to his employment with the Company, Mr. Petterson served as a private consultant to clients in the oil and gas sector, and was Chief Operating Officer and Executive Vice President at Chicago Bridge and Iron Company N.V. (NYSE:CBI) (“CB&I”), an engineering, procurement and construction company, from 2009 – 2013. Prior to CB&I, Mr. Petterson was Chief Executive Officer of Gearbulk, Ltd., a privately held company that owns and operates one of the largest fleets of gantry craned open hatch bulk vessels in the world. He was also President and Chief Operating Officer of AMEC Inc. Americas, a subsidiary of AMEC plc (NASDAQ:AMFW), a British multinational consulting, engineering and project management company. Prior to joining AMEC, Mr. Petterson served in various executive and operational positions for Aker Maritime, Inc., the deepwater division of Aker Maritime ASA of Norway, over the course of 20 years. He spent the first nine years of his career in various positions at Norwegian Contractors, an offshore oil and gas platform contractor. Mr. Petterson is a National Association of Corporate Directors (“NACD”) Board Leadership Fellow. He received a M.Sc., Engineering, as well as a B.S., from Norwegian University of Technology.

Director

Kathleen M. Shanahan

KATHLEEN M. SHANAHAN is currently Chief Executive Officer of Turtle & Hughes, Inc., a private, certified women-owned business, which services the industrial, construction, commercial, electrical contracting, export and utility markets. Ms. Shanahan joined the Board of Directors of HireQuest (NASDAQ:HQI) in 2019 and currently serves on the Audit Committee. Ms. Shanahan has served as Chair of Ground Works Solutions (previously known as URETEK Holdings, Inc.), which provides foundation lifting and soil stabilization solutions, since 2011 and previously also served as Chief Executive Officer from 2011–2016. Ms. Shanahan also previously served as the Chair and Chief Executive Officer of WRS Infrastructure & Environment, Inc. (d/b/a WRScompass), an environmental engineering and civil construction company, as a member of the Board of Directors and Audit Committee of TRC Companies, Inc. (NYSE:TRR) from 2015 – 2017, and as a member of the Board of Directors and Chair of the Executive Compensation Committee of WCI Communities, Inc. (NYSE:WCI) from 2004 – 2007. Additionally, Ms. Shanahan has held numerous positions in government and public policy, having served on the campaigns and administrations as Chief of Staff for Florida Governor Jeb Bush and for Vice President-elect Dick Cheney; Deputy Secretary of the California Trade and Commerce Agency for California Governor Pete Wilson; special assistant to Vice President George H.W. Bush; and as staff assistant on President Ronald W. Reagan’s National Security Council. Ms. Shanahan currently serves on the boards of several private companies, including Lumia Analytics, PRISM, and Tampa General Hospital. Ms. Shanahan is a member of Women Corporate Directors and the International Women’s forum. Ms. Shanahan previously served on the board of TerraSea Environmental Solutions LLC, one of the Company’s previous joint ventures.

She received a M.B.A. in Executive Business Administration from New York University’s Leonard N. Stern School of Business and a B.A. in Nutrition Biochemistry and Economics from the University of California, San Diego.

Director

Ronald Steger

RONALD R. STEGER Mr. Steger previously served on the Boards of Directors of Global Eagle Entertainment Inc., where he held the position of Audit Committee Chair; International Seaways, Inc. (NYSE:INSW) from 2016 – 2017; Overseas Shipholding Group, Inc. (NYSE:OSG) from 2014 – 2018, where he served as Audit Committee Chair; and Sentinel Energy Services Inc. (NASDAQ:STNL) from 2018 – 2020. Mr. Steger also served as an Advisory Board Member of ATREG, Inc. from 2014 – 2020. Mr. Steger is currently a Senior Technical Advisor at Effectus Group, a boutique accounting advisory firm that specializes in serving high-growth technology companies. Until December 31, 2013, Mr. Steger worked as an Audit Partner for KPMG LLP, where he served a broad array of clients in the Fortune 1000 and middle market technology, chemical, food service and semiconductor sectors. Additionally, Mr. Steger has gained significant knowledge regarding the marine services industry through his board service. Mr. Steger is a licensed Certified Public Accountant (retired status). He received a B.S. from Villanova University.

Director

Michael Steuert

D. MICHAEL STEUERT rejoined Fluor Corporation (NYSE:FLR), one of the world’s largest publicly traded engineering, procurement, construction, maintenance and project management companies, on June 1, 2019 as Chief Financial Officer. He retired from that position at the end of 2020. Previously, Mr. Steuert served as Senior Vice President and Chief Financial Officer of Fluor Corporation from 2001 until his retirement in 2012. Previously, Mr. Steuert served as SVP and CFO of Litton Industries Inc., a defense contractor acquired by Northrop Grumman Corporation in 2001 and as Senior Vice President and Chief Financial Officer of GenCorp Inc., now Aerojet Rocketdyne, a technology-based aerospace and defense company (NASDAQ:AJRD), from 1990 – 1999. Mr. Steuert started his career at TRW Inc. In addition to his extensive executive leadership experience, Mr. Steuert has substantial board experience. He has been a member of the Board of Directors of Liquefied Natural Gas Limited (ASX:LNG) since 2015 and is a member of its Audit Committee, Compensation Committee and Chairman of its Risk Committee. He has also been a member of the Board of Directors of Weyerhaeuser Co. (NYSE:WY) since 2004 and is a member and former Chairman and the financial expert of the Audit Committee. Mr. Steuert received a M.S. in Industrial Administration and a B.S. in Physics from Carnegie Mellon University.

Director

Earl Shipp

Mr. Shipp most recently was Vice President of Operations for the U.S. Gulf Coast and Vice President for Texas Operations at Dow Inc. (NYSE:DOW), formerly known as The Dow Chemical Company, a materials science leader committed to delivering innovative and sustainable solutions for customers in packaging, infrastructure and consumer care. Mr. Shipp has over 38 years of domestic and international executive and non-executive leadership experience in manufacturing, operations, and strategic growth. Currently, Mr. Shipp serves on the Board of Directors of National Grid PLC (NYSE:NGG; London:NG) and Olin Corporation (NYSE:OLN). Mr. Shipp holds a Bachelor’s Degree in Chemical Engineering from Wayne State University and graduated from The Consortium for Graduate Study in Management at Indiana University. Additionally, Mr. Shipp is a United States Coast Guard Licensed Captain.

Photo of Lasse Petterson
Chief Executive Officer & President

Lasse Petterson

Photo of William Hanson
SVP, Government Relations & Business Development

William H. Hanson

SVP & Chief Financial Officer

Scott Kornblau

Vivienne Schiffer
SVP, Chief Legal Officer & Chief Compliance Officer

Vivienne Schiffer

Photo of David Simonelli
Chief Operating Officer

David E. Simonelli

James Tastard
SVP, Chief Human Resources & Administrative Officer

James Tastard, Ph.D.

Eleni Beyko
SVP, US Offshore Wind

Eleni Beyko, Ph.D.

Chief Executive Officer & President

Lasse Petterson

LASSE J. PETTERSON was named Chief Executive Officer in May 2017 and assumed the additional title of President in March 2020. He has served as a member of our Board since December 2016. Prior to his employment with the Company, Mr. Petterson served as a private consultant to clients in the oil and gas sector, and was Chief Operating Officer and Executive Vice President at Chicago Bridge and Iron Company N.V. (NYSE:CBI) (“CB&I”), an engineering, procurement and construction company, from 2009 – 2013. Prior to CB&I, Mr. Petterson was Chief Executive Officer of Gearbulk, Ltd., a privately held company that owns and operates one of the largest fleets of gantry craned open hatch bulk vessels in the world. He was also President and Chief Operating Officer of AMEC Inc. Americas, a subsidiary of AMEC plc (NASDAQ:AMFW), a British multinational consulting, engineering and project management company. Prior to joining AMEC, Mr. Petterson served in various executive and operational positions for Aker Maritime, Inc., the deepwater division of Aker Maritime ASA of Norway, over the course of 20 years. He spent the first nine years of his career in various positions at Norwegian Contractors, an offshore oil and gas platform contractor. Mr. Petterson is a National Association of Corporate Directors (“NACD”) Board Leadership Fellow. He received a M.Sc., Engineering, as well as a B.S., from Norwegian University of Technology.

SVP, Government Relations & Business Development

William H. Hanson

WILLIAM H. HANSON is the Senior Vice President – Government Relations & Business Development. A 40 year veteran of the dredging and maritime construction industry, Bill Hanson has been with GLDD for 29 years and a Vice President since 2004. In 2013, he opened GLDD’s first office in Washington DC. Mr. Hanson began his career with the US Army Corps of Engineers in Galveston and Los Angeles, and then worked for Connolly Pacific of Long Beach, California before joining GLDD in 1988. At GLDD, he served in management roles in the North Atlantic and Southern Divisions as well as managing Latin America for 12 years. Mr. Hanson serves on several Federal Advisory committees as well as on boards of groups with national and regional interest to GLDD, and several academic advisory boards related to ocean and coastal engineering. Mr. Hanson is a 1979 Ocean Engineering graduate of Texas A&M, where he was named a distinguished alumni in 2013.

SVP & Chief Financial Officer

Scott Kornblau

SCOTT KORNBLAU joined Great Lakes as Senior Vice President and Chief Financial Officer in October, 2021. Prior to joining Great Lakes, he was employed with Diamond Offshore Drilling in Houston, for 24 years serving as Vice President and Treasurer from 2007 until 2017, and more recently, Senior Vice President and Chief Financial Officer from 2017 until September 2021. Previously, he worked as an Auditor for KPMG.

Mr. Kornblau graduated from the University of Texas in Austin with a degree in Accounting and is a licensed Certified Public Accountant in the State of Texas.

As a member of the Executive Team for Great Lakes, Mr. Kornblau offers over 25 years of financial leadership, specializing in accounting, systems and business operations, and sales.

SVP, Chief Legal Officer & Chief Compliance Officer

Vivienne Schiffer

Vivienne “Lie” Schiffer joined Great Lakes Dredge & Dock in December 2020 as SVP, Chief Legal Officer, Chief Compliance Officer, General Counsel + Corporate Secretary, and leads the Company’s legal and compliance organization, providing legal counsel to Executive Management and the Board of Directors. Lie’s specific responsibilities include the oversight of corporate governance, policy and regulatory strategy development, litigation, environmental matters, intellectual property, global corporate compliance, and labor and employment laws.

Prior to joining Great Lakes, Lie was a senior corporate and securities partner in the global firm of Thompson & Knight, LLP. She has over 35 years of experience and has held significant legal, business and operational leadership roles in the industrials sector including advising clients on a range of corporate governance, capital markets and M&A matters. Lie is part of Great Lakes’ Executive Team and reports directly to the CEO.

Chief Operating Officer

David E. Simonelli

DAVID E. SIMONELLI is GLDD’s Chief Operating Officer and served as President—Dredging Division since April 2010. He has overall responsibility for the Dredging Division including safety, estimating, engineering, domestic and foreign operations, and plant and equipment. He was named a Vice President of the Company in 2002 and Special Projects Manager in 1996. He joined the Company in 1978 as a Civil Engineer and has since held positions of increasing responsibility in domestic and international operations and project management.

Mr. Simonelli earned a Bachelor of Science in Civil and Environmental Engineering from the University of Rhode Island. He is a member of the Hydrographic Society, the American Society of Civil Engineers, and The Western Dredging Association.

SVP, Chief Human Resources & Administrative Officer

James Tastard, Ph.D.

JAMES TASTARD, Ph.D. joined Great Lakes as Senior Vice President & Chief Human Resources and Administrative Officer in October 2020. As a member of the Executive Team, he is responsible for leading GLDD’s HR organization, Talent Management, Leadership Development, and Learning, Compensation, and Benefits, Employee Relations, Payroll, Risk Management, Marketing and Communications, and Environment, Social, and Governance (ESG).

James has been a leader in Human Resources for three decades, focused on driving business results through the unique intersection of strategy, leadership, and culture. With a distinct focus on leadership, his areas of expertise include developing top talent, succession planning for critical roles, helping organizations thrive in dynamic conditions, and leading large-scale complex change.

Before joining GLDD, James served as a strategic talent and leadership consultant. Previously, he worked as Chief Human Resource Officer at Geokinetics, VPHR at Freeport LNG, VPHR at Statoil (now Equinor), and SVP HR & HSE at Aker Solutions. James spent ten years working and living globally to deliver significant oil and gas capital projects in Saudi Arabia, the United Kingdom, Russia, and Norway. Earlier in his career, he held positions leading people and organization change strategy, M&A, health, safety and environment, and global human resources.

James holds a bachelor’s degree from California State University, Long Beach, an MBA from the University of Phoenix, and received a Ph.D. in Business, Organization, and Management from Capella University.

SVP, US Offshore Wind

Eleni Beyko, Ph.D.

Eleni Beyko, Ph.D. joined Great Lakes in January 2021 as Senior Vice President, US Offshore Wind, starting January 25, 2021 and is responsible for US Offshore Wind strategy and business development, as well as leading GLDD’s US Offshore Wind Operations.

Ms. Beyko has over 20 years’ experience in program engineering, business leadership, and project execution for the automobile and offshore oil and gas markets. Her experience has also included Engineering, Technical Manager, Research & Development – Offshore Technology, and offshore projects. She most recently served as Director, Energy Transition for Americas at TechnipFMC responsible for positioning TechnipFMC to support the transition into new and economically viable wind energy resources, and managing the Makani wind-borne energy spar offshore platform installation in partnership with Shell and Google X.

Ms. Beyko graduated with a Diploma from National Technical University Athens in 1988 in Mechanical Engineering, Naval Architecture & Marine Engineering. She attended the University of Michigan where she earned her MSE, Naval Architecture and Marine Engineering (1990), MSE Applied Mechanics, Mechanical Engineering (1991), Master of Business Administration (MBA) (2003) and Ph.D., Naval Architecture and Marine Engineering (1992).

Photo of Steven Becker
SVP, Fleet Engineering

Steven W. Becker

Photo of Christoper Gillespie
SVP, Cutter Suction Dredge Fleet Manager

Christopher Gillespie

Photo of David Johanson
SVP, Project and Area Operations, Gulf Region

David Johanson

Photo of Russell Zimmerman
SVP, Project & Area Operations, Southeast Region

Russell F. Zimmerman

Photo of Christopher Gunsten
SVP, Project Services

Christopher G. Gunsten, P.E.

SVP & Deputy Southeast Region Manager

Lynn Nietfeld

SVP, Fleet Engineering

Steven W. Becker

STEVEN W. BECKER was named Senior Vice President, Fleet Engineering in 2020 after serving as Senior Vice President of the Plant & Equipment Division since 2013, and Vice President from 2006. Since 1995, he has managed the Equipment Maintenance and Mechanical Engineering Departments. Prior to serving as a Vice President, Mr. Becker held the positions of Chief Mechanical Engineer Manager and Manager of Production Engineering. He joined Great Lakes in 1984 as a Field Engineer after interning with the company during college as a Design Engineer/Draftsman. Mr. Becker earned a bachelor’s degree in Mechanical Engineering from the University of Illinois.

SVP, Cutter Suction Dredge Fleet Manager

Christopher Gillespie

CHRISTOPHER GILLESPIE is Senior Vice President, Cutter Suction Dredge Fleet Manager. Prior to this, he had been GLDD’s Vice President and Special Projects Manager since 1997. He joined the Company in 1987 as a Project Engineer and previously served as a Commissioned Officer in the U.S. Army Corps of Engineers. Mr. Gillespie earned a Bachelor of Science in Civil Engineering from the U.S. Military Academy at West Point and a graduate degree in Environmental Engineering from the University of Tulane. He is a member of the Society of American Military Engineers.

SVP, Project and Area Operations, Gulf Region

David Johanson

DAVID JOHANSON is Senior Vice President, Project and Area Operations – Gulf. Before that, Mr. Johanson was promoted to Vice President and Hydraulic Division Manager in 2015 and served as Vice President Project Director of Charleston Deepening Projects from 2018-2020 which included the largest dredging contract ever awarded by the US Army Corps of Engineers. He joined the company in 1994 as a field engineer and has held positions of increasing responsibility in project management.

Mr. Johanson earned a Bachelor of Science in Ocean Engineering from Virginia Polytechnic Institute & State University and a MBA – finance specialization from University of South Carolina. He is a current board member of the Western Dredging Association Eastern Branch and is a member of American Society of Civil Engineers.

SVP, Project & Area Operations, Southeast Region

Russell F. Zimmerman

RUSSELL F. ZIMMERMAN is the Senior Vice President, Project and Area Operations – Southeast. Before that Mr. Zimmerman had been Vice President and Area Manager, South Atlantic since 2013. He was promoted to Vice President for Special Project in 2009 and served as Vice President, Chief Estimator from 2011 – 2013. He joined the Company in 1982 as a Field Engineer and has held positions of increasing responsibility in project management. Mr. Zimmerman earned a Bachelor of Science in Construction Management Technology from Purdue University. He is a member of the Society of American Military Engineers and the Western Dredging Association.

SVP, Project Services

Christopher G. Gunsten, P.E.

CHRISTOPHER G. GUNSTEN, P.E. was appointed to Senior Vice President, Project Services in October 2021. Previously he served as Vice President, International Operations with responsibility for acquiring projects, providing estimation data, and leading field supervision of work in progress. Chris began his career with Great Lakes Dredge & Dock Company as a Field Engineer in1992. Career highlights include serving as Deputy Project Manager for Chevron’s Wheatstone LNG Project’s Engineering, Procure and Construct dredging subcontract in Onslow, WA, Australia valued at $1.2 billion AUD, as Project Manager executing a series of capital projects for the USACE New York District’s 45 and 50 Foot Harbor Deepening Programs, and as Operations Manager for GLDD’s Øresund Fixed Link Project in Copenhagen, Denmark. He received his Bachelor of Science in Civil Engineering from Rutgers University.

SVP & Deputy Southeast Region Manager

Lynn Nietfeld

LYNN NIETFELD was appointed Senior Vice President and Deputy Regional Manager for the Southeast Region for Great Lakes, October 2021. Ms. Nietfeld previously served as Vice President – Senior Project Sponsor, Project Area Operations Southeast, and Senior Project Sponsor, overseeing projects in the Southeast and West Coast beginning 2011. Prior to this role, she worked as a Project Manager on several Great Lakes projects, including deepening project in Long Beach, California and the Columbia River. Ms. Nietfeld joined Great Lakes in 1995 as a Field Engineer and offers over 27 years of engineering and operations leadership.

Ms. Nietfeld received a Bachelor of Science degree in Civil Engineering from the University of Minnesota.

Photo of Steven Auernhamer
VP, Commercial Clients

Steven R. Auernhamer

VP, Health, Safety & Environment

Jason W. Campbell

VP, Senior Project Sponsor

Garrett L. Gibson

VP, Manager Rivers & Lakes

Stan Ekren

Todd Lightfoot
VP, Finance

Todd Lightfoot

Photo of Katherine O'Halloran
VP, Controller & Treasurer

Katherine Hayes O’Halloran

Mark Reid
VP, Northeast Region

Mark Reid

Photo of Thomas Roberts
VP, Trailing Suction Hopper Dredge Fleet Manager

T. Christopher Roberts

VP, Digital & Innovation

Trond Ellefsen

VP, Commercial Clients

Steven R. Auernhamer

STEVEN R. AUERNHAMER was named Vice President, Commercial Clients in 2020 and was previously GLDD’s VP and Area Manager, Gulf Coast since 2012. He started with Great Lakes in 1990 as a Field Engineer after graduating with a bachelor’s degree in Civil Engineering from Michigan Technological University. He was promoted to Hydraulic Division Engineer in 1999, and a Project Sponsor in 2006 and Area Manager, Gulf Coast in 2011.

VP, Health, Safety & Environment

Jason W. Campbell

Jason Campbell joined Great Lakes Dredge & Dock Company in September 2013 as Risk Manager, and was appointed VP of Health, Safety & Environment in 2021. Jason has over 24 years of experience and has held various safety and risk roles in Oil and Gas, Utilities, Deep Tunnel, and Heavy Civil industries.

Jason has a B.S. in Safety Management from the University of Central Missouri State and served in the U.S. Navy. He is a member of the American Society of Safety Professionals.

VP, Senior Project Sponsor

Garrett L. Gibson

Garrett L. Gibson was appointed to Vice President, Senior Project Sponsor in 2020, and works in the Gulf Region. Previously, Garrett worked in the International Division from 2007 to 2019 in various roles including Project Director for the 80 million m3 island development project, Diyar Al Muharraq; Project Sponsor for Latin America works; and as Area Manager for the Middle East Division.

Garrett began his career with Great Lakes Dredge and Dock Company as a Field Engineer in 2000, and holds a Bachelor of Science in Civil Engineering from North Carolina State University.

VP, Manager Rivers & Lakes

Stan Ekren

Stan has over 39 years of experience in the dredging Industry working with 23 USACE District Offices, located on the West, Gulf and East Coast, as well as the Great Lakes, Mississippi River System and mid-America. He has completed numerous project types including Harbor/Channel Deepening, Beach and Marsh Restoration, Land Creation, Car/Rail Tunnel Crossings, Navigation Dredging, and Inland Reservoir Dredging. Additionally, Stan has been involved in the pricing of dredging opportunities on four (4) continents and both the Canadian & U.S. Arctic. Stan’s prior experience includes ownership of B+B Dredging, a small business, Hub Zone Hopper Dredge Company.

VP, Finance

Todd Lightfoot

Mr. Lightfoot was named Vice President, Finance in May 2019. He joined Great Lakes in 2011 as Senior Manager of Financial Reporting responsible for public company (SEC) reporting. In 2013, he was appointed to the role of Director and assumed financial planning and analysis and tax responsibilities. Prior to Great Lakes, he was a financial consultant to large publicly traded clients and was a divisional Director of Strategy for Equity Office Properties. Mr. Lightfoot has dual bachelor’s degrees in accounting and international business from Taylor University, and is a CPA.

VP, Controller & Treasurer

Katherine Hayes O’Halloran

KATHERINE HAYES O’HALLORAN was appointed to her position of Vice President, Corporate Controller in 2013. She served as Company Treasurer since 2011 and previously held the role of Director of Investor Relations and Financial Reporting since joining the Company in 2006. Prior to Great Lakes, Mrs. O’Halloran was Director of Corporate Accounting at TransUnion, LLC. She is a CPA and has a Bachelor of Science degree in Accountancy from Northern Illinois University and a Master of Business Administration in Finance from St. Xavier University in Chicago.

VP, Northeast Region

Mark Reid

Mark Reid serves as Vice President, Northeast Region at Great Lakes Dredge and Dock with overall responsibility for processes, policies and controls for ensuring that dredging operations are executed safely, efficiently, profitably and consistent with Corporate operating and site procedures.

Mr. Reid earned a Bachelor of Science in Construction Management Technology from Purdue University. He is a member of the International Society of Explosive Engineers and the Western Dredging Association. He joined Great Lakes in 1993 filling engineering and management roles throughout the US, Middle East and Denmark. He has sponsored multiple capital Harbor Deepening Programs for a number of USACE Districts. Mr. Reid also manages the companies drilling and blasting operations and licensing.

VP, Trailing Suction Hopper Dredge Fleet Manager

T. Christopher Roberts

T. CHRISTOPHER ROBERTS was named Vice President in 2011 having developed and managed the Field Engineering Department from 1996. He joined the Company in 1989 as a Field Engineer Intern and within Engineering roles worked on Company projects throughout the US and Middle East. He holds a bachelor’s degree in Civil Engineering Technology from Murray State University and a Master of Business Administration from Lewis University

VP, Digital & Innovation

Trond Ellefsen

TROND ELLEFSEN joined Great Lakes in September 2020, as Vice President for Digital and Innovation. Prior to joining Great Lakes, Mr. Ellefsen spent more than 25 years in several global leadership positions in the oil, gas and energy industries.

He most recently held the position of Chief Executive Officer for an artificial intelligence, analytics and consultancy company providing technical strategies and solutions for FT100 companies, as well as Chief Technology Officer for a Nano technology company.

Mr. Ellefsen holds an Electrical Engineering degree from Gothenburg University and Master’s Program in Technical Leadership & Development from the University of Stavanger.

In September 2021, Mr. Ellefsen was named Vice President, IT/IS & Digital, leading the company’s IT function in addition to implementing the company’s strategic digital initiatives.

Steven W. Becker

Senior Vice President, Fleet Engineering
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Lasse Petterson

Chief Executive Officer & President
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William H. Hanson

Senior Vice President - Government Relations & Business Development
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Christopher Gillespie

Senior Vice President, Cutter Suction Dredge Fleet Manager
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Steven R. Auernhamer

Vice President, Commercial Clients
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Mark Marinko

Senior Vice President & Chief Financial Officer
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David Johanson

Senior Vice President, Project and Area Operations - Gulf
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John F. Karas

Senior Vice President of Estimating
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Vivienne Schiffer

Senior Vice President, Chief Legal Officer, Chief Compliance Officer, General Counsel, and Corporate Secretary
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David E. Simonelli

Chief Operating Officer
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Russell F. Zimmerman

Senior Vice President, Project and Area Operations - Southeast
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James Tastard, PhD

Senior Vice President & Chief Human Resources and Administrative Officer
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Lawrence R. Dickerson

Chairman of the Board
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Steven L. Lane

Vice President, Rivers and Lakes
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Todd Lightfoot

Vice President, Finance
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Katherine Hayes O’Halloran

Vice President, Controller & Treasurer
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Christopher G. Gunsten, P.E.

Vice President, International Operations
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T. Christopher Roberts

Vice President, Trailing Suction Hopper Dredge Fleet Manager
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The Ellis Island

The Ellis Island recently commenced dredging operations on Phase 1 of the MSCIP Comprehensive Barrier Island Restoration Plan in the U. S. Gulf of Mexico offshore of Gulfport Mississippi. With a 15,000 cubic yard capacity Ellis Island is the largest hopper dredge in the U. S..

Our Projects

> Overview

Before & After
Transformations

See the dramatic transformations of some of our largest projects.  Read more

Safety

In 2006, GLDD adopted an Incident-and Injury-Free (IIF®) safety management program that has been integrated into all aspects of the company’s culture. The company’s commitment to the IIF® culture promotes a work environment where employee safety is paramount.

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Great Lakes Dredge & Dock (GLDD) is North America’s dredging industry leader, the largest provider of marine dredging, and the only U.S. company with substantial overseas operations. 

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