Willbros Group, Inc. is a global engineering and contractor company based in Houston, Texas that operates in the field of energy infrastructure services.

According to the Complaint, this action stems from a Proposed Transaction announced on March 28, 2018, pursuant to which Willbros Group Inc. ("the Company”) will be acquired by Primoris Services Corporation through its wholly owned subsidiary, Waco Acquisition Vehicle, Inc. (“Merger Sub”).

On March 28, 2018, the Company’s Board of Directors caused the Company to enter into an Agreement and Plan of Merger with Merger Sub.

On April 11, 2018, Defendants filed a preliminary Proxy Statement on Schedule 14A with the United States Securities and Exchange Commission in connection with the Proposed Transaction. The Complaint alleges that the Proxy Statement omits certain material information with respect to the Proposed Transaction, which renders it false and misleading, in violation of Sections 14(a) and 20(a) of the Securities Exchange Act of 1934.

This case was voluntarily dismissed on May 9, 2018.