Slide 1: Investor Presentation
Investor Presentation August 2026
Slide 2: Investment Rationale
Investment Rationale Leading provider of critical infrastructure services and solutions Balanced portfolio of projects and services designed to reduce risk and increase predictability Well-positioned in renewables, natural gas generation and power delivery markets with strong secular tailwinds Diver
Slide 3: Leading Provider of Critical Infrastructure Services and Solutions
Leading Provider of Critical Infrastructure Services and Solutions Utilities Energy Power Generation Renewables Pipeline Services Power Delivery Communications Gas Operations Highways & Bridges Electrical Construction Services » Transmission, Distribution & » Gas Main & Service » Natural Gas Generat
Slide 4: Utilities Segment
Utilities Segment POWER DELIVERY Sales ($M) $2,781 $2,692 $2,410 $2,439 2023 2024 2025 TTM Q2 '26 COMMUNICATIONS Total Backlog ($M) $7,666 GAS OPERATIONS $6,423 $5,190 $5,521 • Capturing long-term electrification tailwinds in Power Delivery, including grid resilience and expansion • Driving margin i
Slide 5: Energy Segment
Energy Segment INDUSTRIAL Sales ($M) RENEWABLES $5,019 $4,629 $4,032 $3,346 HEAVY CIVIL 2023 2024 2025 TTM Q2 '26 Total Backlog ($M) PIPELINE SERVICES $6,344 $6,190 • Industrial construction activity increasing, driven by natural gas generation $5,705 opportunities $5,522 • Renewables market support
Slide 6: Payne Crest Acquisition
Payne Crest Acquisition Expands Primoris into comprehensive electrical construction services Revenue by End Market Full Suite of Specialized Electrical Construction Services Commercial Rapid growth in new construction of data centers and other advanced 15% facilities end markets driving revenue oppo
Slide 7: Emerging Opportunities to Support Data Center Development
Emerging Opportunities to Support Data Center Development Premier partner for powering data centers–planning, building, and connecting natural gas, solar PV/BESS, and power delivery infrastructure along with maintenance and comprehensive network services solutions. NETWORK CONSTRUCTION GAS POWER GEN
Slide 8: Balanced Project Portfolio
Balanced Project Portfolio Contract Size Benefits Master Service Agreement Revenue $3.0 $2.6 $2.3 $2.4 » Average project size is less than $3 million $2.5 $2.1 $2.0 $2.0 » Unit price and reimbursable contracts $1.6 $ Billions (representing >85%) lower the risk of project cost $1.5 $1.4 over-runs $1.
Slide 9: Well-positioned in Markets with Strong Tailwinds
Well-positioned in Markets with Strong Tailwinds Energy Electrification and Reshoring and Supply Diversity Modernization Reindustrialization Adoption of utility-scale Growing electrical demand Growth of domestic solar, natural gas, battery and an aging grid driving industrial capacity driving storag
Slide 10: Secular Tailwinds Support Growth
Secular Tailwinds Support Growth Multiple positive trends fueling infrastructure spend in both the near- and long-term Market Opportunity Growth Drivers Power Delivery » Grid upgrade and maintenance requirements » Increased load demand from reindustrialization $145 Billion(1) and emerging technologi
Slide 11: Valued Partner to Blue Chip Customer Base
Valued Partner to Blue Chip Customer Base Segment Select Primoris Customers Average Tenure 2026 YTD Revenue Breakdown by Customer Customer 1, 8.8% Customer 2, +28 6.2% Customer 3, Utilities Years 5.3% Customer 4, 4.9% Other, 51.7% Customer 5, 4.7% Customer 6, 4.0% Customer 7, 3.7% Customer 10, Custo
Slide 12: Track Record of Improvement in Key Metrics
Track Record of Improvement in Key Metrics Leveraging service portfolio and 12-MONTH BACKLOG REVENUE SG&A ($ BILLIONS) ($ BILLIONS) (% OF REVENUE) geographic footprint to address large +20% +16% (CAGR) (CAGR) growing market opportunity $7.3 6.2% 5.6% $6.1 $2.5 $3.5 Managing support cost structure Q2
Slide 13: Primoris Strategy Roadmap
Primoris Strategy Roadmap Drive Deliver Direct Operational Consistent Capital to Improvements Performance High Growth to Support in Foundational Opportunities Margins and Businesses Cash Flow Our foundational Operational excellence Strict capital allocation businesses with and efficient operations t
Slide 14: Consistent Performance in Foundational Business
Consistent Performance in Foundational Business Market Trends Foundational Businesses Revenue by End Market $3,500 $3,145 Energy demand in North America requires continued investment in $2,919 $2,982 $2,997 $3,000 natural gas power generation $2,387 $2,500 Supply chain reshoring and reindustrializat
Slide 15: Target Gross Margin Profile
Optimize Service Line and Customer Mix Multi-year End Market Trends • Targeted increase of transmission / substation mix while growing MSA revenue in power Electrical Construction delivery Communications Services Renewables • Allocate skilled human capital resources Target Gross Margin Profile High
Slide 16: High Growth Markets - Power Delivery
High Growth Markets - Power Delivery Power Delivery Primary Service Markets 2025 Market Trends Generation capacity expected to grow more than 300 GW by 2030 and 500 GW by 2035 Retirement of aging power plants and increased load growth from data centers, industrial reshoring and residential demand Gr
Slide 17: High Growth Markets - Renewables
High Growth Markets - Renewables Primoris Solar Projects Market Trends One Big Beautiful Bill and Treasury department tax guidance provides stability and visibility for safe harboring of solar projects through 2030 Utility-scale solar supply chain dynamics and project economics continue to improve s
Slide 18: Capital Allocation Priorities
Capital Allocation Priorities Capital allocation focused on four primary areas to drive shareholder value: Support organic growth by disproportionately Investing in the allocating capital toward our most attractive, highest Business return markets Deploy cash flow to pay down debt, reduce Balance Sh
Slide 19: Managing Leverage
Managing Leverage Achieving leverage ratio target will enable future investments 1 Trailing 12-month Net Debt / Adjusted EBITDA • In-line with Net debt / Adjusted EBITDA 2.5 multiple target of 1.5x following PayneCrest acquisition 2.0 1.6x • Working capital needs, seasonality or 1.5 acquisitions cou
Slide 20: Accelerating Our Strategy Through Disciplined Acquisitions
Accelerating Our Strategy Through Disciplined Acquisitions Legacy Primoris Inorganic Growth Go Forward M&A Strategy Evaluate and score targets Focus on supporting on key financial metrics growth businesses including: with bolt-on • Margin and cash flow acquisitions that Acquisitions Wealth of accret
Slide 21: Acquisition Drivers and Criteria
Acquisition Drivers and Criteria Acquisitions will continue to play a role in the growth of Primoris Financial Metrics Current Targets STRATEGIC FIT Accretive to Revenue Growth >7% Aligns with one or more Accretive to Operating Income Margins >5% strategic initiatives Cost Synergies Year 1 Attra
Slide 22: Safety Performance
Safety Performance Primoris Historical Performance vs. Industry Average 3.5 45 3.0 40 3.0 3.2 2.8 3.1 2.5 2.5 35 2.4 2.5 30 2.3 2.2 2.0 25 • Lowered Total Recordable Incident Rate (“TRIR”) to 0.53, or ~76% below the industry average reported for 2024 1.5 20 • Over 350 dedicated Health, Safety, and E
Slide 23: Strengthening Customer Centricity
Strengthening Customer Centricity Target and Understand the Bid selectively Allocate people Execute with prioritize clients’ needs and deliver on and resources safety, quality, customers that and objectives commitments to expanding and productivity value our with discipline opportunities partnership
Slide 24: Investment Case in Primoris
Investment Case in Primoris 1 OPPORTUNITY TO EXPAND GROSS MARGINS in high growth markets 2 IMPROVING CASH FLOW PROFILE and leverage ratio 3 FOCUSED ALLOCATION of resources toward highest returns in service portfolio 4 ATTRACTIVE VALUATION compared to companies with comparable end markets Focused on
Slide 25: 2026 Guidance
2026 Guidance As of September 30, 2026 Full Year 2026 Earnings Per Share (“EPS”): Full Year Effective Tax Rate: ̶ $1.30 to $1.85 per diluted share ̶ Approximately 30% to 32% Full Year 2026 Adjusted EPS: Remaining Six Months 2026 Capital ̶ $2.05 to $2.60 per diluted share Expenditures: ̶ $70
Slide 26: Reg G Reconciliation
Reg G Reconciliation 26
Slide 27: Reconciliation of Adjusted Net Income & Adjusted EPS 2Q 2026 vs. 2Q 2025
Schedule 1: Reconciliation of Adjusted Net Income & Adjusted EPS 2Q 2026 vs. 2Q 2025 Adjusted Net Income & Adjusted EPS Primoris defines Adjusted Net Income as net income (loss) adjusted for certain items including, (i) non‐cash stock‐based compensation expense; (ii) transaction/integration and rela
Slide 28: Reconciliation of EBITDA & Adjusted EBITDA 2Q 2026 vs. 2Q 2025
Schedule 2: Reconciliation of EBITDA & Adjusted EBITDA 2Q 2026 vs. 2Q 2025 EBITDA and Adjusted EBITDA Primoris defines EBITDA as net income (loss) before interest, income taxes, depreciation and amortization. Adjusted EBITDA is defined as EBITDA adjusted for certain items including, (i) non‐cash sto
Slide 29: Reconciliation of Non-GAAP Forecasted Guidance Full Year 2026
Schedule 3: Reconciliation of Non-GAAP Forecasted Guidance Full Year 2026 Adjusted Net Income Forecast & EPS to Adjusted EPS for the year ending December 31, 2026 The following table sets forth a reconciliation of the forecasted GAAP net income to Adjusted Net Income and EPS to Adjusted EPS for the
Slide 30: Reconciliation of Non-GAAP Forecasted Guidance Full Year 2026
Schedule 4: Reconciliation of Non-GAAP Forecasted Guidance Full Year 2026 Adjusted EBITDA Forecast for the year ending December 31, 2026 The following table sets forth a reconciliation of the forecasted GAAP net income to EBITDA and Adjusted EBITDA for the year ending December 31, 2026. Estimated Ra