Sterling Infrastructure, Inc. · NASDAQ:STRL

Sterling Infrastructure — Corporate Update (October 2026)

22 slides from Sterling Infrastructure's corporate update, Oct 1, 2026

  1. Slide 1: Always Moving Forward

    ALWAYS MOVING FORWARD. ©2026 Plateau Excavation, Inc. All rights reserved.

  2. Slide 2: Slide 2

  3. Slide 3: Plateau at a Glance

    PLATEAU AT A GLANCE 6 Specialized companies One Vertically Integrated Team. Full Service Sitework Solutions. 40+ 1,800+ 1,400+ YEARS OF TOTAL OWNED EXPERIENCE EMPLOYEES Site development and FLEET heavy civil construction Tunneling and boring #1 85% MISSION CRITICAL ENR EXCAVATION CONTRACTOR REPEAT C

  4. Slide 4: Markets We Serve

    MARKETS WE SERVE From mission critical campuses to industrial complexes and public infrastructure. MISSION CRITICAL INDUSTRIAL & MANUFACTURING E-COMMERCE & DISTRIBUTION COMMERCIAL INFRASTRUCTURE WHATEVER THE MARKET. OUR COMMITMENT REMAINS THE SAME. PEOPLE Our strength QUALITY We build it right, INNO

  5. Slide 5: People

    PEOPLE CATERPILLAR

  6. Slide 6: Tenure & Plateau Pride

    TENURE & PLATEAU PRIDE AVERAGE TENURE FOR FIELD SUPERVISORS: 18 YEARS AVERAGE TENURE FOR OFFICE LEADERSHIP TEAM: 21 YEARS

  7. Slide 7: Investing in Our People

    INVESTING IN OUR PEOPLE FIELD CAREER INTERNSHIPS TRAINING DEVELOPMENT GROWTH

  8. Slide 8: Safety

    SAFETY

  9. Slide 9: Training & Development

    TRAINING & DEVELOPMENT EMR | 0.67 4,375 30+ 2,432 1,253 TOTAL TRAINING COMPLETIONS SAFETY & HEALTH CLASSES EQUIPMENT-TRAINING COMPLETIONS AUGUST COMPLETIONS HOW WE TRAIN: SAFETY & HEALTH SIMULATION FIELD TRAINING UTILITY LOCATE TRAINING 2026 YTD | AS OF 8/18/26

  10. Slide 10: Quality

    QUALITY

  11. Slide 11: More Than Moving Dirt: The Self Perform Advantage

    MORE THAN MOVING DIRT THE SELF PERFORM ADVANTAGE SCHEDULE QUALITY CONTROL ASSURANCE Fewer handoffs. Built in from Fewer delays. the start. COST ACCOUNTABILITY EFFICIENCY One team from Reduced markups start to finish. and change orders.

  12. Slide 12: Equipment & Resources

    Equipment & Resources 1,400+ PIeces of Owned Equipment Fleet Headquartered in Georgia with an office in Florida, providing local expertise and the resources of a nationally backed company. EQUIPPED TO PERFORM AT SCALE

  13. Slide 13: What We Do

    WHAT WE DO SITE MASS UNDERGROUND STORMWATER SITE DEVELOPMENT GRADING PREPARATION UTILITIES MANAGEMENT RETAINING DRY INFRASTRUCTURE WALLS CONCRETE UTILITIES MICROTUNNELING INFRASTRUCTURE SPECIALIZED DRILLING & DEMOLITION SPECIALTY SAFETY & QUALITY SERVICES BLASTING SERVICES

  14. Slide 14: Underground Infrastructure

    UNDERGROUND INFRASTRUCTURE UNDERGROUND STORM EXCAVATION DRAINAGE SANITARY & ELECTRICAL DUCT MICROTUNNELING WATER BANKS

  15. Slide 15: Innovation

    INNOVATION

  16. Slide 16: Construction Technology

    CONSTRUCTION DRONE & AERIAL INTELLIGENCE PROJECT INTELLIGENCE TECHNOLOGY Drone Mapping Volumetric Calculations Field Data Production Tracking Progress Tracking Site Documentation As-Built Validation Data-Driven Planning BIM / VDC GPS MACHINE 3D Modeling CONTROL Utility Coordination Precision Grading

  17. Slide 17: Built for Mission Critical

    BUILT FOR MISSION CRITICAL SCALE Proven expertise SPEED Greater control from PRECISION Built into RELIABILITY Backed by at scale start to finish every operation Sterling Infrastructure

  18. Slide 18: Mission Critical by the Numbers

    MISSION CRITICAL BY THE NUMBERS MORE THAN A DECADE OF MISSION CRITICAL EXPERIENCE +9 GW Delivered at Scale +31,000 AC Developed +55M CY Dirt Moved +431K LF Duct Banks Installed +692K LF Storm Installed +631K LF Water Installed

  19. Slide 19: Mission Critical Lifecycle

    SELECT PROJECTS BY STATE MISSION CRITICAL LIFECYCLE * *Only representative of a portion of owned acreage

  20. Slide 20: Total Site Acreage by Select Locations

    TOTAL SITE ACREAGE BY SELECT LOCATIONS

  21. Slide 21: Why Clients Choose Plateau

    WHY CLIENTS CHOOSE PLATEAU SELF-PERFORM EXPERIENCED FINANCIAL SAFETY TECHNOLOGY RELIABLE ADVANTAGE WORKFORCE STRENGTH FIRST DRIVEN DELIVERY Greater control from Proven expertise Backed by Built into Driving accuracy Proven performance, start to finish at scale Sterling Infrastructure every operation

  22. Slide 22: Q&A

    Q&A

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