About Us

A TRADITION OF EXCELLENCE

Clark Construction Group is one of the most experienced and respected building and civil construction firms in the United States. For over a century, we have been transforming the ideas and visions of our clients into award-winning projects. We build with the intention of exceeding our clients’ expectations for safety, quality, functionality, and aesthetics, and deliver finished products that stand the test of time.

A LOCAL BUILDER WITH NATIONAL REACH

Clark has been helping our clients build for over a century. American owned and operated since 1906, we have grown from a small local excavator into one of the most capable and trusted providers of construction services. As one of the nation’s most established firms, we have a long-term perspective that is invaluable in our industry.

We pride ourselves on being a local builder with national reach. Our 4,200 employees are spread across offices and jobsites throughout the United States. Though our presence today is larger than ever before, we are deeply rooted in the communities where we build and live.

Our portfolio features projects of all sizes and levels of complexity — from intricate interior renovations to some of the most complex civil operations in the country; we can build it all — and we do. Clark’s breadth of capabilities ensures that we are able to meet our clients’ needs every time, on every front.

But, more than our extensive portfolio, what truly sets us apart from our competition is our people. Their dedication to providing world-class service to our clients, resolve for delivering exceptional work, capacity for innovation and problem solving, and unwavering commitment to improving the communities we serve, not only make Clark a great place to work, but a company with which our clients want to work.

 

100+ Years, 1400+ Awards

We are uncompromising in our pursuit of excellence. Perhaps the greatest testament to our commitment to quality work is the recognition we have garnered from our peers. Clark projects have been honored with more than 1,400 local and national awards for quality, craftsmanship, sustainability, and safety, including:

  • 19

    Associated General Contractors of America - Alliant Build America Awards

  • 8

    Associated Builders & Contractors - National Excellence in Construction Eagle Awards

  • 4

    Engineering News-Record Best of the Best Awards

  • 14

    Design-Build Institute of America Awards

  • 10

    Sustainability Awards

Clark is consistently ranked among the nation’s leading building and civil contractors.

  • #12

    Top Contractors
    Engineering News-Record

  • #5

    Domestic General Building Contractor
    Engineering News-Record

  • #13

    Domestic Heavy Contractor
    Engineering News-Record

  • #8

    Highway Contractor
    Engineering News-Record

  • #2

    Multi-Unit Residential Contractor
    Engineering News-Record

  • #3

    Healthcare General Contractor
    Modern Healthcare

  • #6

    General Building Contractor
    Engineering News-Record

  • #2

    Green General Contractor
    Engineering News-Record

  • #13

    Transportation Contractor
    Engineering News-Record

  • #2

    Government Office Contractor
    Engineering News-Record

Leadership

For over a century, Clark has benefited from energetic, principled, and creative leaders at its helm. These qualities live on today. Clark's executive team brings a diverse set of skills and experience, ensuring a well-rounded perspective on company operations. Although from varied backgrounds, our leaders share a common vision and values; they possess a passion for building, a devotion to our clients, a dogged dedication to ensuring the company's — and our people's — continued growth and prosperity, and an enthusiasm for strengthening our communities.

Corporate Leadership

Robert D. Moser, Jr.

Robert D. Moser, Jr.

President &
Chief Executive Officer

Robert (Robby) Moser provides executive direction for Clark Construction Group and its subsidiaries, including the acquisition of work and operations, for both building and civil construction. Robby began his career at Clark in 1997.

Robby currently serves on the board of The Potomac School. Additionally, he is member of the William Preston Society at Virginia Polytechnic Institute and State University (Virginia Tech), and an active supporter of the SEED Company and the Cystic Fibrosis Foundation. He is involved with a variety of building industry organizations, including the Associated General Contractors and Design-Build Institute of America. Formerly, Robby served as a member of the Advisory Board for the Alexandria Seaport Foundation and the ACE Mentor program. He also is a former member of the German Club Alumni Foundation at Virginia Tech.

Education

  • Bachelor of Science, Civil Engineering Virginia Polytechnic Institute and State University
  • The Executive Program, Darden School of Business University of Virginia
William R. Calhoun, Jr.

William R. Calhoun, Jr.

Vice Chairman &
Executive Vice President

William (Bill) Calhoun is responsible for the acquisition of work nationally. He is focused on business development and drives the company’s strategic focus on new and emerging markets. Bill began his career with Clark in 1983, and has over three decades of industry experience.

Bill is a member of the Corporate Advisory Board of So Others Might Eat, the External Advisory Board of Georgia Institute of Technology’s College of Engineering, and the Board of Visitors for the A. James Clark School of Engineering at the University of Maryland. He also is on the board of directors for the Construction Industry Roundtable and a National Peer in GSA’s Construction Excellence Peer Review program.

Education

  • Bachelor of Science, Civil Engineering Georgia Institute of Technology
  • Advanced Management Program Harvard Business School
Harold K. Roach, Jr.

Harold K. Roach, Jr.

Executive Vice President &
Chief Operations Officer

Harold (Hal) Roach is responsible for Clark’s operations nationwide. He works with regional executives to monitor project performance, ensuring that client, cost, schedule, safety, and quality goals are achieved. Hal also focuses on identifying and proactively addressing risks and opportunities across the organization. Hal began his career with Clark in 1976.

Hal is President of the Board of Team River Runner, a non-profit organization focused on helping wounded warriors rehabilitate and re-acclimate after injury through paddle sport activities. Formerly, he served on the Board of Directors for Strathmore.

Education

  • Bachelor of Science, Civil Engineering Lafayette College
  • Master of Business Administration The Wharton School, University of Pennsylvania
Susan Williamson Ross

Susan Williamson Ross

Executive Vice President &
Chief Administrative Officer

As Chief Administrative Officer, Susan Ross is responsible for strategic business planning and manages the company’s human resources, corporate training, corporate communications, corporate philanthropy, community relations, research and development, and office services. Susan began her career with Clark in 1986.

Susan is currently the Vice President of the Board of the School of Architecture at The University of Virginia and a founding board member of Jubilee to College. She is a former member of the boards of The Potomac School, National Presbyterian School, Construction Personnel Executive Group, and Women in Engineering Advisory Board at the University of Maryland. She also serves as independent director for NVR, Inc.

Education

  • Bachelor of Science in Architecture University of Virginia
  • Registered Architect
Frank J. Baltz

Frank J. Baltz

Senior Vice President &
Chief Legal Officer

Frank Baltz leads Clark’s legal department.  In this role, he is responsible for analyzing and negotiating contracts for new projects, and providing legal advice to project teams throughout the construction and closeout process. He also is a Principal with Edgemoor Infrastructure & Real Estate, and acts as a liaison between Edgemoor and Clark. Frank began his career with Clark in 2004 as Senior Vice President of Legal Affairs. He has more than 25 years of experience practicing law.

Frank serves on the Board of Trustees of Youth for Tomorrow, and is a member of the Board of Directors of the Council for Court Excellence.

Education

  • Bachelor of Arts, Political Science The American University
  • Juris Doctorate The College of William and Mary
  • Member of the Virginia, District of Columbia, New York, and Vermont bar associations
Sameer Bhargava

Sameer Bhargava

Executive Vice President and Chief Financial Officer

As Executive Vice President and Chief Financial Officer, Sameer is part of the executive team responsible for the company’s overall growth and financial health. He provides leadership for the firm’s financial activities, as well as audit, risk management, corporate planning, and IT functions. Sameer has more than two decades of financial and executive leadership experience, including work with a number of Fortune 500 companies.

Sameer is a member of the board of The Potomac School, and works actively with Cycle for Survival.

Education

  • Bachelor of Science, Biology Harvard University
  • Master of Business Administration Harvard Business School

Civil Leadership

John P. O’Keefe

John P. O’Keefe

President & CEO,
Atkinson Construction

As President & CEO of Guy F. Atkinson Construction, John O'Keefe is responsible for the company's national operations, including the acquisition and execution of highway/roadway, bridge, civil, mining, tunneling, and power work throughout the country. In this role, he works closely with the company's regional executives to develop pursuit strategies for new civil work and to coordinate the allocation of Atkinson resources on a national basis.

John is a member of the Penn State University School of Engineering Industrial and Professional Advisory Council and the Penn State Department of Architectural Engineering PACE Advisory Council. He also is a member of the Construction Industry Ethics and Compliance Initiative.

Education

  • Bachelor of Architectural Engineering The Pennsylvania State University
  • The Executive Program Darden School of Business, University of Virginia
Mamoud R. Hosseini

Mamoud R. Hosseini

Division President & CEO,
Clark Civil

Mamoud (Mo) Hosseini provides executive leadership for Clark Civil, as well as Clark’s support of excavations company, Clark Foundations. In this capacity, he is responsible for both the acquisition of new work, as well as the execution of day-to-day construction activities. Mo began his career with Clark in 1989. He has worked in the construction and engineering industry for over three decades and has extensive experience in design-build delivery.

Mo is a member of the American Society of Civil Engineers, the Deep Foundations Institute, and the Moles.

Education

  • D.SC., A.B.D., Structural Dynamics The George Washington University
  • Bachelor of Science, Civil Engineering The George Washington University
  • Master of Science, Structural Engineering The George Washington University
  • Professional Engineer in Virginia, Maryland, and the District of Columbia
Michael E. Post

Michael E. Post

President & CEO,
Shirley Contracting

Mike Post is responsible for the overall leadership and management of Shirley Contracting, including executive guidance for the company's safety program, financial management and planning, corporate operations, business planning, estimating, and business development. Mike began his career with Shirley Contracting in 1981, and has over 30 years experience in heavy civil construction.

Mike is a member of the board for George Mason University's Volgenau School of Engineering and the George Mason University Civil Engineering Institute.

Education

  • Bachelor of Science, Accounting George Mason University

Business Unit Leadership

Brian A. Abt

Brian A. Abt

Division President & CEO,
Mid-Atlantic Region

Brian Abt provides executive management for the more than $2 billion of construction activities in Clark’s Mid-Atlantic Region. He is responsible for the region’s day-to-day operations, including client relations, safety, and quality. Brian began his career with Clark in 1985, and has three decades of industry experience.

Brian is a member of the board for The 2030 Group. Formerly, he was a member of the board of the Jubilee Support Alliance.

Education

  • Bachelor of Science, Civil Engineering Rensselaer Polytechnic Institute
  • Advanced Management Program Harvard Business School
Sidney J. Jordan

Sidney J. Jordan

Division President & CEO,
Southern Region

Sid Jordan is responsible for the day-to-day operations, including jobsite and administrative activities, for all projects in the Southern region of the United States. Sid began his career with Clark in 1993, and has over 33 years of construction experience.

Sid is a member of Executive Advisory Board for the University of Florida’s School of Building Construction, as well as a member of the board for the Construction Specification Institute, Associated General Contractors, Society of American Value Engineers, and Associated Builders and Contractors. He also is involved with the St. Joseph’s Hospitals Foundation.

Education

  • Bachelor of Science, Building Construction University of Florida
  • Certified General Contractor in South Carolina, Mississippi, Georgia, Tennessee, North Carolina, and Florida
David P. Trolian

David P. Trolian

Senior Vice President,
Northern Region

David Trolian provides executive leadership for Clark’s Northern Region. In this role, he is responsible for the company’s day-to-day operations, including the acquisition and execution of work, and business functions, both in Chicago, and throughout the north-central United States. Dave began his career with Clark in 1995, and has more than two decades of construction industry experience.

Dave is Treasurer of the Builders Association (Chicago chapter of the Associated General Contractors of America) and also serves on the organization’s Labor Relations Committee.

Education

  • Bachelor of Science, Civil/Structural Engineering University of Illinois
Gregory S. Colevas

Gregory S. Colevas

Division President,
Regional Group

As Division President, Greg Colevas leads Clark’s Regional Group, with a focus on healthcare, laboratory, government, and institutional projects, as well as key clients, outside our core geographic markets. In addition to providing executive leadership to projects across the country, Greg serves as Clark’s union labor relations representative. Greg joined Clark in 1985 and has more than three decades of construction experience.

Greg is actively involved with the Don Bosco Cristo Rey High School. He also is a member of the National Advisory Council at the George Washington University School of Engineering and Applied Science, and is involved with the school’s Clark Scholars program.

Education

  • Bachelor of Science, Civil Engineering The George Washington University
Richard M. Heim

Richard M. Heim

Division President & CEO,
Western Region

Richard Heim provides executive management for Clark’s regional offices in California, including Costa Mesa, San Diego, and San Francisco. He is responsible for the region’s day-to-day operations — over $1 billion of construction projects throughout the state. Richard began his career with Clark in 1988, and has over 40 years of construction experience.

Richard is a member of the Catholic Cathedral Board of the Diocese of Orange County.

Education

  • Bachelor of Science, Building Construction University of Florida
  • Master of Business Administration Auburn University
  • Licensed Contractor in Florida, Arizona, California, and Nevada
Jim M. McLamb

Jim M. McLamb

Regional Operations Officer and Senior Vice President,
Western Region

As Regional Operations Officer and Senior Vice President for the Western Region, Jim McLamb is responsible for leading the Golden State Warriors Arena and Office Development project. In this role, Jim provides executive leadership for more than $1 billion of work. He also manages relationships with some of the region's key clients. Jim joined Clark in 1990, and has more than 25 years of construction industry experience.

Jim is a member of the American Bar Association, the Los Angeles Business Council, and the Construction Management Association of America – Southern California Chapter. Additionally, he is a member of the board of the Associated General Contractors of California and the ACE Mentor Program. Jim also is the company's labor relations liaison in Southern California.

Education

  • Bachelor of Science, Building Construction University of Florida
  • Juris Doctor Whittier Law School
Steve J.  Dell’Orto

Steve J. Dell’Orto

Regional Acquisition Officer and Senior Vice President,
Western Region

As Regional Acquisition Officer and Senior Vice President for the Western Region, Steve Dell’Orto focuses on acquiring work, developing win strategies, and leading the project pursuit process, as well as on cultivating new, and maintaining current, client relationships. In this position, Steve provides executive leadership for the Western Region’s marketing, preconstruction, estimating, and purchasing teams. Steve joined Clark in 1993. He has more than two decades of construction industry experience.

Steve is actively involved with Clark’s Strategic Partnership Program for small businesses, as well as with the San Francisco chapter of the Boys & Girls Club.

Education

  • Bachelor of Arts, Economics University of Virginia
  • Master of Business Administration University of Southern California
Mike W.  Ricker

Mike W. Ricker

Regional Executive Officer and Senior Vice President,
Western Region - North

Mike Ricker provides executive leadership for Clark’s offices in San Francisco and Seattle. In this role, he is responsible for more than $2 billion of construction operations in Northern California and the Pacific Northwest, as well as for business and operations functions throughout the region. Mike joined Clark in 1999, and has nearly two decades of construction experience.

Mike is a member of the Associated General Contractors’ Foundation for Success Committee (San Diego Chapter), and is actively involved with the San Diego State University Construction Engineering Management Program.

Education

  • Bachelor of Science, Building Construction Virginia Polytechic Institute and State University (Virginia Tech)
Carlos Gonzalez

Carlos Gonzalez

Regional Executive Officer and Senior Vice President,
Western Region – South

As Regional Executive Officer and Senior Vice President, Carlos Gonzalez provides executive leadership for more than $1 billion of construction in Southern California, as well as for business and operations functions throughout the region. Carlos joined Clark in 2001, and has nearly two decades of construction industry experience, including several years leading self-perform concrete operations.

Carlos is an active member of the National ACE Mentor Program Board of Directors and the Civil Engineering Advisory Board at San Diego State University.

Education

  • Bachelor of Science, Civil Engineering San Diego State University
  • Master of Structural Engineering San Diego State University
  • Master of Business Administration University of California, San Diego
  • Real Estate Management Certificate Harvard Business School
C. Neal Fleming, Jr.

C. Neal Fleming, Jr.

President,
Edgemoor Infrastructure & Real Estate

Neal Fleming provides executive leadership for all of Edgemoor Infrastructure & Real Estate’s pursuits, including turnkey development for both public and private clients across the country. Neal worked for Clark for over a decade during his early career and later rejoined the company to provide executive leadership for Clark’s turnkey services after years in real estate development. He has nearly four decades of experience in construction and development.

Neal is a member of the Urban Land Institute and actively involved with several educational and healthcare organizations in Washington, D.C., San Francisco, and Los Angeles.

Education

  • Bachelor of Arts and Sciences Tulane University
  • Master of Real Estate The American University
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A Foundation for How We Build

Core Values

We remain true to the same principles on which our company was founded over a hundred years ago: providing superior service to our clients, putting safety first, creating opportunities for our people, delivering exceptional work, fostering innovation, acting with integrity, and strengthening our communities. These tenets unite us as one company, and guide every aspect of our business.

We remain true to the same principles on which our company was founded over a hundred years ago: providing superior service to our clients, putting safety first, creating opportunities for our people, delivering exceptional work, fostering innovation, acting with integrity, and strengthening our communities. These tenets unite us as one company, and guide every aspect of our business.

Client Service

Our success is defined by the success of our clients. With each project we undertake, we seek to earn our clients’ trust and respect — to develop relationships that endure. We believe that earning and maintaining that trust requires delivering consistently outstanding client service. This philosophy guides the way we do business.

Our success is defined by the success of our clients. With each project we undertake, we seek to earn our clients’ trust and respect — to develop relationships that endure. We believe that earning and maintaining that trust requires delivering consistently outstanding client service. This philosophy guides the way we do business.

Safety

Clark is committed to safety above all else. To us, no project is successful unless it is built safely. We believe that all accidents are preventable, and through proper planning and training, employee engagement and empowerment, and constant vigilance, we can ensure that everyone leaves the jobsite in the same condition that they arrived.

Clark is committed to safety above all else. To us, no project is successful unless it is built safely. We believe that all accidents are preventable, and through proper planning and training, employee engagement and empowerment, and constant vigilance, we can ensure that everyone leaves the jobsite in the same condition that they arrived.

Innovation

No matter the task, we find a way to get the job done. Since our early beginnings, Clark has been at the forefront of new technologies and evolving building trends. As we expand both locally and nationally, we continue to push the boundaries of innovation, finding ways to work faster and smarter, and respond to our clients' challenges with ingenuity.

No matter the task, we find a way to get the job done. Since our early beginnings, Clark has been at the forefront of new technologies and evolving building trends. As we expand both locally and nationally, we continue to push the boundaries of innovation, finding ways to work faster and smarter, and respond to our clients' challenges with ingenuity.

Integrity

From how we treat our clients to how we engage with our project partners, a deep commitment to ethics and fairness guides how we do business and is paramount to our success. We hold our work — and our people — to the highest professional standards, because at the end of the day, we believe that doing the right thing — all the time and every time — is the only thing to do.  

Learn more about Clark's commitment to building with integrity in our Code of Business Ethics and Standards.

From how we treat our clients to how we engage with our project partners, a deep commitment to ethics and fairness guides how we do business and is paramount to our success. We hold our work — and our people — to the highest professional standards, because at the end of the day, we believe that doing the right thing — all the time and every time — is the only thing to do.  

Learn more about Clark's commitment to building with integrity in our Code of Business Ethics and Standards.

Quality

Details matter. Delivering our clients' visions means understanding that the details are just as important as the bigger picture. We believe in doing it right the first time, every time, and place value on diligent planning and stringent quality control. Our projects are built to last and realize our clients' standards for long-term performance.

Details matter. Delivering our clients' visions means understanding that the details are just as important as the bigger picture. We believe in doing it right the first time, every time, and place value on diligent planning and stringent quality control. Our projects are built to last and realize our clients' standards for long-term performance.

Community

We are passionate about making a difference in the communities we serve and call home. Fulfilling this commitment is about more than writing checks; it’s about giving of our time and talents to create meaningful change. Whether we are supporting the interests of our clients or rolling up our sleeves to assist a deserving nonprofit, we embrace the opportunity to make a lasting impact through community service.

We are passionate about making a difference in the communities we serve and call home. Fulfilling this commitment is about more than writing checks; it’s about giving of our time and talents to create meaningful change. Whether we are supporting the interests of our clients or rolling up our sleeves to assist a deserving nonprofit, we embrace the opportunity to make a lasting impact through community service.

THE MORE THINGS CHANGE, THE MORE THEY STAY THE SAME

Over the last century, Clark has transformed from a local road excavator into one of the nation’s leading construction companies. 

Paving the Way

Clark’s history in heavy civil construction dates back to the founding of our company — known as the George Hyman Construction Company — in 1906. Our foray into building began years later, when company founder George Hyman realized that there was more work to be had in the industry; buildings were being built in the holes he dug. Soon thereafter, he set his sights on expanding his business to include vertical construction. Joining forces with another local contractor, George Hyman signed his first contract to build Wheatly Junior High School in Washington, D.C., in 1923. The rest is history.

Growing Up

Hyman took on larger contracts in the years that followed. With help from his nephew, Benjamin Rome, who joined the company in 1927, he guided the company through ups and downs in the construction market during the roaring 1920s and the Great Depression. Eventually the company would benefit from the booming demand for military construction projects during World War II.

In 1950, A. James Clark, a young engineering graduate from the University of Maryland, joined the organization. Clark helped lead the company’s efforts on the University of Maryland's Chemistry Building, American Red Cross Headquarters, and other signature projects. He quickly ascended the ranks from field engineer to estimator to company executive. Following Mr. Hyman’s death in 1959, Mr. Rome took the helm of the George Hyman Construction Company and named Mr. Clark Vice President and General Manager. The two men’s strengths complemented one another and the business flourished. 

In the late 1960s, Mr. Clark assumed the role of President and CEO. Under his leadership, the company expanded its client service offerings to include foundations, concrete, interiors, and preconstruction. In the years that followed, the company would experience a number of watershed moments, including the award of one of the largest projects in Washington, D.C. history — L’Enfant Plaza.

Expanding Our Reach

In 1977, Mr. Clark formed OMNI Construction to pursue non-union projects in Washington, D.C. The company also began to build projects outside of the Washington, D.C. Metropolitan area, including Atlanta, New York, Florida and California. Following the success of projects like the Reagan State Office Building in Los Angeles and the CenTrust Towers in Miami, permanent offices were established in Florida and California, and later in Chicago, and Texas.

Enhancing Our Services

In the 1990s, Clark bolstered its heavy civil capabilities by acquiring Shirley Contracting Company and Guy F. Atkinson Construction. In 1995, the company became Clark Construction Group when OMNI Construction and Hyman Construction merged. A new era began.

In the following decades,  the company continued its upward trajectory as it expanded its employee base, services, and geographic reach. Clark's portfolio grew, too, to include massive ballparks and convention centers, sophisticated hospitals, and monumental projects like national museums, and even a space launch facility.

Remaining True to Who We Are

Now over a century later, Clark is presented with challenges and opportunities that could not have been imagined in our early history. Our construction methods, technology, and training continue to evolve to meet these challenges.

Our current projects are a far cry from those George Hyman built years ago. On the surface, the differences between the company of the early 1900s and the Clark of today are vast. But despite the evolution we've experienced since our humble beginnings, our story continues to be one of trust, relationships, innovation, and a supreme dedication to quality work, client service, and to our communities. The reason that Clark is here today — and stronger than ever — is because our core principles have not changed, and will not change. Adhering to these principles is as essential to our success in our second century of business as it was in 1906.