Sterling (STRL) Q1 2026 earnings review
E-Infrastructure Boom Powers Record-Shattering Quarter
Sterling's aggressive pivot toward mission-critical E-Infrastructure is yielding parabolic results. First-quarter revenue surged 92% year-over-year to $825.7 million, while Adjusted EPS spiked 120% to $3.59. The integration of the CEC acquisition supercharged top-line growth, adding $156.1 million in revenue and massive backlog visibility. While the legacy Building Solutions segment remains a severe drag on corporate margins due to housing affordability headwinds, the sheer scale of the E-Infrastructure boom more than offsets it. Management raised full-year 2026 guidance aggressively, projecting revenue to reach $3.75 billion at the midpoint—an accelerating growth trajectory.
🐂 Bull Case
Signed backlog stands at $3.8 billion (+78% YoY), with a combined backlog of $5.15 billion. A Q1 book-to-burn ratio of 2.1x ensures the growth trajectory is locked in for the foreseeable future.
Despite 92% top-line expansion and integration of a major acquisition, consolidated Adjusted EBITDA margins remained strong at 20.2%, expanding roughly 150 basis points from the prior-year quarter.
🐻 Bear Case
While Building Solutions revenue ticked up 3%, adjusted operating income cratered 42%. The 8.7% segment margin is a sharp deceleration from 15.5% a year ago, weighing heavily on the bottom line.
With the total addressable pool of work approaching $6.5 billion (up $2B since year-end 2025), staffing constraints and execution on multi-year semiconductor and data center campuses remain critical risk factors.
⚖️ Verdict: 🟢🟢
Extremely Bullish. The sheer volume and velocity of the E-Infrastructure backlog completely overshadow the localized weakness in residential construction. The CEC acquisition is performing exactly as mapped out by management.
Key Themes
E-Infrastructure and Data Centers Dominating the Mix
E-Infrastructure is accelerating rapidly, jumping 174% YoY to $597.7 million and now comprising 72% of total company revenue. Even excluding the CEC acquisition, organic growth exceeded 55%. Mission-critical projects—primarily data centers, manufacturing, and semiconductor facilities—represent over 90% of the segment's backlog.
CEC Acquisition Synergies Being Realized
The integration of CEC mission-critical electrical services is a massive growth catalyst. In Q1 alone, CEC contributed $156.1 million to revenue and an astonishing $1.88 billion to combined backlog (including $1.29 billion in unsigned awards). Cross-selling integrated site and electrical services to data center clients is officially gaining traction, with two data center campuses already in active integrated construction.
Transportation Mix Shift Delivers Margin Upside
Transportation segment revenue grew a stable 10% to $132.9 million, but adjusted operating income jumped 26%. This margin expansion (from 11.3% to 12.9%) proves the company's strategy of downsizing low-bid heavy highway projects in Texas in favor of alternative delivery and Rocky Mountain projects is structurally working.
Building Solutions Margin Collapse
A clear contradiction to the growth narrative: Building Solutions reported a 3% YoY revenue increase, suggesting stabilization. However, adjusted operating profit plunged 42% (from $14.2M to $8.3M). The margin compressed from 15.5% down to 8.7%, highlighting severe negative operating leverage.
Macro Picture: Housing Affordability Constraints
Management explicitly cited persistent affordability constraints weighing on prospective homebuyers as the core macro headwind. They expect soft market conditions in the residential/commercial slab business to persist through the entirety of 2026, offsetting positive macro trends in the infrastructure segments.
Pacing vs Capacity on Mega-Campuses
With the award of the initial phase of site development for a large, multi-year semiconductor fabrication campus, combined backlog exploded by 131% YoY to $5.15 billion. Converting this massive pipeline efficiently while managing skilled electrical and mechanical labor constraints will dictate whether margins can hold in the mid-20% range.
Other KPIs
Accelerating drastically from $84.9 million in the year-ago quarter. Cash generation remains a structural strength, padding a balance sheet that now holds $511.9 million in cash and equivalents against long-term debt of $272.3 million—maintaining a massive net cash position.
The company repurchased shares at an average price of $305.14. This is a sharp volume deceleration compared to the $43.8 million repurchased in 25Q1, likely reflecting capital allocation pivoting toward funding the massive organic backlog ramp.
Guidance
Accelerating violently. The $3.75 billion midpoint implies a 51% YoY growth rate over FY25's $2.49 billion. This aggressive raise reflects the integration of CEC and the surging semiconductor/data center pipeline.
Accelerating. The $858 million midpoint suggests roughly 70% YoY growth vs FY25 ($504 million). The fact that EBITDA growth is guided significantly higher than revenue growth (70% vs 51%) indicates management expects persistent margin expansion, primarily via the mix shift toward E-Infrastructure.
Accelerating. Implies a ~72% growth rate over the $10.88 achieved in FY25. This metric explicitly underscores how effectively top-line execution is flowing through to the bottom line.
Key Questions
Building Solutions Margin Floor
With the segment's operating margin dropping from 15.5% to 8.7% despite slight revenue growth, at what point does the negative operating leverage bottom out? Are there structural fixed costs that need to be removed?
Labor Capacity for Unsigned Awards
CEC contributed $1.29 billion in unsigned awards this quarter. Do you have the skilled electrical labor capacity already secured to execute this ramp, or will you need to aggressively hire/acquire in Texas?
Cross-Selling Dynamics
You noted active construction on two data center campuses utilizing integrated site and electrical services. What is the margin profile of these joint projects compared to standalone site development work?