WHO WE ARE WHAT WE DO SAFETY JOIN US ETHICS LINE SUSTAINABILITY INVESTOR RELATIONS CONTACT US ETHICS LINE CODE OF BUSINESS CONDUCT SUPPLIER CODE OF CONDUCT FREQUENTLY ASKED QUESTIONS HOME ETHICS LINE ETHICS LINE Sterling’s Commitment To An Ethical Culture Sterling is committed to upholding the highest ethical standards and complying with applicable laws and regulations, its Code of Business Conduct and Company policies or requirements. We have selected Lighthouse-Services to provide us with an anonymous and confidential method to hear your concerns or report misconduct. The Ethics Line is open not only to Sterling employees but to any party with knowledge of an ethics or compliance issue, including customers, vendors and other third parties. The Ethics Line is a phone and Internet resource established to help us do the right thing. You have our promise that your comments will be heard. We also prohibit unlawful retaliation. Sterling prohibits retaliation against anyone for raising a legal or ethical concern in good faith or for cooperating with an investigation. FREQUENTLY ASKED QUESTIONS We recognize that you may have questions about the Sterling’s Ethics Line and what will happen when you call. Please read through our FAQ prior to filing a report. TO MAKE A REPORT OR ASK A QUESTION You may use any of the following methods to submit a report, or ask a question. TELEPHONE ONLINE FAX By calling 1-800-398-1496, for English By calling 1-800-216-1288, for Spanish From Mexico dial 001-800-216-1288 FEATURED PROJECT Type of Job: Water Transmission Lines Construction Cost: $54M (over 4... Learn More MAKE SURE TO EXPLORE THE COMPLETE STERLING FAMILY! © Sterling Construction Co » Site map » Privacy Notice »

WHO WE ARE WHAT WE DO SAFETY JOIN US ETHICS LINE SUSTAINABILITY INVESTOR RELATIONS CONTACT US SITE MAP HOME SITE MAP SITE MAP Front page of Sterling Construction Company Who We Are History Directors Our Companies Our Culture What We Do Safety Join Us Ethics Line Code of Business Conduct Supplier Code of Conduct Frequently Asked Questions Sustainability A message from our CEO Corporate Overview Environmental Social Governance Investor Relations Investor Relations Press Releases INVESTOR PRESENTATIONS & WEBCASTS SEC Filings Other SEC Filings Analyst Coverage Code of Business Conduct Supplier Code of Conduct Audit Committee Charter Compensation & Talent Development Committee Charter Contact the Audit Committee Corporate Governance and Nominating Committee Charter Board Governance Stock Quote Contact Us Send Us A Note FEATURED PROJECT Type of Job: 27.6 mile controlled-access, Extension of State Highway 121 Cost: ... Learn More MAKE SURE TO EXPLORE THE COMPLETE STERLING FAMILY! © Sterling Construction Co » Site map » Privacy Notice »