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Sterling Infrastructure (STRL) Q2 FY26 earnings call: guidance and Q&A

Earnings call· Jun 2026 (Q2 FY26)· Industrials· Aug 4, 2026

Source: earnings call transcript

Executive summary

Sterling Infrastructure Q2 FY26 — Record Backlog and Strong E-Infrastructure Growth

Sterling Infrastructure delivered an outstanding quarter, marked by significant growth in E-Infrastructure driven by mission-critical projects and record backlog. The company is strategically reallocating resources from lower-margin transportation work and focusing on expanding capacity through organic investments and M&A to meet accelerating demand, particularly in the data center and semiconductor markets. Management remains confident in its multi-year outlook, despite some near-term market and timing-related headwinds.

Highlights

5
  • Revenue grew 90% year-over-year to $1.05B (estimated from guidance midpoint)

  • Adjusted diluted EPS grew 116% to $5.80 from $2.69

  • Adjusted EBITDA more than doubled with margins expanding 150 basis points year-over-year to 22%

  • Combined backlog increased 150% to $5.6 billion

  • E-Infrastructure revenue grew 192% driven by mission-critical data centers and semiconductor campuses

Concerns

5
  • Residential market expected to face strong headwinds throughout 2026, with Building Solutions revenue declining 1%

  • Transportation Solutions revenue declined 20% due to resource reallocation to higher-margin infrastructure projects

  • Potential for softer third quarter awards due to timing, not a change in demand

  • Skilled labor, particularly electricians, remains the tightest capacity constraint, limiting faster growth

  • CEC's lower margin profile, despite strong growth, dilutes overall E-Infrastructure segment margins

Guidance & targets

CategoryTargetConfidence
Full-year 2026 Revenue
$4.0B to $4.15B
high materiality
High
Full-year 2026 Diluted EPS
$17.25 to $17.85
high materiality
High
Full-year 2026 Adjusted Diluted EPS
$19.70 to $20.30
high materiality
High
Full-year 2026 EBITDA
$829M to $854M
high materiality
High
Full-year 2026 Adjusted EBITDA
$891M to $916M
high materiality
High
Full-year 2026 CapEx
$130M to $140M
medium materiality
High
Full-year 2026 E-Infrastructure Segment Revenue Growth
over 100%
high materiality
High
Full-year 2026 Legacy Site Development Business Revenue Growth
approaching 70% or higher
medium materiality
High
Full-year 2026 E-Infrastructure Adjusted Operating Profit Margins
mid-20% range
high materiality
High
Full-year 2026 Transportation Solutions Revenue Decline
7% to 10% range
medium materiality
High
Full-year 2026 Transportation Solutions Adjusted Operating Margin Expansion
150 to 200 basis points
medium materiality
High
Full-year 2026 Building Solutions Revenue
decline modestly
low materiality
High
Full-year 2026 Building Solutions Adjusted Operating Margin
high-single to low-double digits
low materiality
High
CEC Margin Improvement
300 to 500 basis points
medium materiality
Medium
CEC Long-term EBITDA Margin
close to 20%
medium materiality
Medium

Segment performance

SegmentRevenueYoYQoQMargin
E-Infrastructure
Outstanding performance driven by mission-critical projects, with strong growth across geographies and robust margins benefiting from execution on large, time-sensitive projects. CEC and Rocky Mountain division were key contributors to growth.
Adjusted operating income increase: 148%Mission-critical activity (data centers, semiconductor campuses) as primary growth driverRocky Mountain division revenue increase: nearly 700%CEC revenue growth: 140%Mission-critical work as % of signed backlog: >92%
$850M (estimated)192%—24% adjusted operating margin
Transportation Solutions
Revenue declined due to ongoing reallocation of resources to higher-margin infrastructure projects. Margins and profitability improved significantly due to focus on attractive opportunities and winding down low-bid heavy highway work.
Adjusted operating margin increase YoY: >500 basis pointsAdjusted operating income growth: 8%Backlog: $969 millionBacklog increase YoY: 35%Backlog decrease from year-end 2025: 11%
$150M (estimated)-20%—19.5% adjusted operating margin
Building Solutions
Segment revenue declined modestly due to relatively flat homebuilder activity and strong headwinds in the residential market. The company sees opportunities for share gain coming out of the down cycle.
—-1%—9.9% adjusted operating margin

STRL operating KPIs by quarter

STRL operating KPIs stated on its earnings calls, by fiscal quarter
KPI Dec 2025 Q4 FY25 Mar 2026 Q1 FY26This call Jun 2026 Q2 FY26Change vs prior quarter
Backlog
$3B Signed backlog at the end of the quarter totaled $3 billion, a 78% increase from year-end 2024. Source: earnings call transcript
$3.8B Signed backlog at the end of the quarter totaled $3.8 billion, a 78% year-over-year increase and combined backlog grew 131% to reach $5.2 billion. Source: earnings call transcript
$4.3B Signed backlog at quarter end totaled $4.3 billion, up 116% year-over-year and combined backlog increased 150% to reach $5.6 billion. Source: earnings call transcript
+13.2%
Backlog Transportation Solutions
$1.1B We ended the quarter with Transportation Solutions backlog at $1.1 billion, and 81% year-over-year increase, driven by strong award activity and the conversion of unsigned backlog to sign backlog. Source: earnings call transcript
$1.04B We ended the quarter with Transportation Solutions backlog at $1.04 billion, a 20% year-over-year increase. Source: earnings call transcript
$969M We ended the quarter with Transportation Solutions backlog at $969 million, a 35% year-over-year increase. Source: earnings call transcript
-6.8%
Combined backlog
$3.3B Combined backlog of $3.3 billion increased 81% from prior year-end or 42%, excluding CEC. Source: earnings call transcript
$5.2B Signed backlog at the end of the quarter totaled $3.8 billion, a 78% year-over-year increase and combined backlog grew 131% to reach $5.2 billion. Source: earnings call transcript
$5.6B Signed backlog at quarter end totaled $4.3 billion, up 116% year-over-year and combined backlog increased 150% to reach $5.6 billion. Source: earnings call transcript
+7.7%
Book-to-bill ratio
1.64 ratio Fourth quarter 2025 book-to-burn ratios were 1.64x for backlog and 0.81x for combined backlog. Source: earnings call transcript
2.1 ratio First quarter 2026 book-to-burn ratios were 2.1x for backlog and 3.5x for combined backlog. Source: earnings call transcript
1.4 ratio Second quarter 2026 book-to-burn ratios were 1.4x for backlog and 1.3x for combined backlog exclusive of the impact of the Stone Ridge acquisition. Source: earnings call transcript
-33.3%
Book-to-bill ratio Combined backlog
0.81 ratio Fourth quarter 2025 book-to-burn ratios were 1.64x for backlog and 0.81x for combined backlog. Source: earnings call transcript
3.5 ratio First quarter 2026 book-to-burn ratios were 2.1x for backlog and 3.5x for combined backlog. Source: earnings call transcript
1.3 ratio Second quarter 2026 book-to-burn ratios were 1.4x for backlog and 1.3x for combined backlog exclusive of the impact of the Stone Ridge acquisition. Source: earnings call transcript
-62.9%

Operating figures the company stated on at least two of the calls shown, checked against each call's transcript. Click a figure to read the sentence. A dash means it was not stated that quarter.

Orderbook & backlog

Signed backlog $4.3B Q2 FY26 end

up 116% YoY

Combined backlog $5.6B Q2 FY26 end

increased 150%

High probability future phase opportunities exceed $1.4B Q2 FY26 end
Total addressable pool of work (signed, unsigned, future phase) more than $7B Q2 FY26 end

increase of more than $2.5B since year end

E-Infrastructure signed backlog, unsigned electrical awards and future phase site development opportunities exceed $6B Q2 FY26 end

increase of $2.7B since year-end

CEC combined backlog increase $1.7B Q2 FY26 end

since year-end 2025

Deals & partnerships

Stone Ridge Tuck-in acquisition to expand presence in attractive markets.

Positions Sterling well for coming activity in the Pacific Northwest.

Various banks Extension and expansion of revolving credit facilities. $1.5B extended maturity to July 2031

Closed on July 2, 2026. Moved to an all-revolver structure and enhanced pricing.

Capital programs

Fleet incremental investments underway
Period spend: $30M increase from prior guidance

Benefit:drive productivity and expand capacity

Increasing CapEx guidance to $130M-$140M for FY26 to fund these investments.

CEC prefabrication facilities making great progress in ramping up production

Benefit:drive productivity with field electricians and provide cost savings

Strategic investment to support sustained growth.

Risks & headwinds

Residential market headwinds throughout 2026

Building Solutions segment revenue declined 1% in Q2 FY26

Mitigation:Focus on opportunities for share gain coming out of the down cycle.

Weather-related slowdown Q4 FY26

Potential for weaker Q4 FY26 revenue compared to forecast

Mitigation:Conservative forecasting; strong backlog and opportunities could offset if weather is favorable.

Skilled labor shortage (electricians) Ongoing

If we had 1,000 or 2,000 more electricians, we'd be growing it even faster.

Mitigation:Expanded recruiting efforts, training programs (Sterling Academy, CEC University), strategic tuck-in acquisitions for human capital.

Timing of awards leading to sequential backlog decline Q3 FY26

Could result in a sequential backlog decline in Q3 FY26

Mitigation:Management emphasizes this is due to award timing, not a change in demand; strong bid activity expected in Q4 FY26 and early 2027.

Data center bans/delays Ongoing

Discussed in Q&A regarding news about data centers being banned in new markets (e.g., Texas)

Mitigation:Management has not seen any impact on current schedules or projects coming; views it as political noise in some states, with Texas moving forward quickly.

What to watch in Q3 FY26

Q4 Revenue Performance vs. Weather

Q4 FY26
Current Conservative Q4 forecast due to potential weather impact
Target Stronger Q4 revenue if weather is favorable

Why it matters

Weather can significantly impact construction activity and revenue realization, especially in Q4, and management noted conservatism in their guidance.

We never know what the weather is going to be in the fourth quarter. If we have weather like last year, I think we'll have a much stronger fourth quarter than we have in our forecast.

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Q&A highlights

How has the size and scope of CEC's work changed, what are the margin expectations, and how should investors think about the business's future margin profile?

CEC's job sizes are increasing significantly, and they are winning follow-on phases for data centers, indicating strong performance. While CEC's margins are currently lower than site development, they are improving. Management aims for 300-500 basis points of margin improvement in 12-18 months by exiting low-margin legacy work and benefiting from larger projects. Long-term, they believe CEC's EBITDA margins could approach 20%, similar to other Sterling businesses.

“If I step back and think 3 to 5 years, I don't know why today, the electrical world is kind of low double-digit margins, call it, 10% to 12% EBITDA margins. I don't know why we can get that close to 20%.”

asked by Brent Thielman · answered by Joseph Cutillo

2 min read 6 chapters

Detailed narrative

E-Infrastructure Dominance and Growth Drivers

Sterling's E-Infrastructure segment was the primary growth engine, with revenue surging 192% year-over-year. This was largely fueled by mission-critical activities, specifically data centers and semiconductor campuses. The company noted particular strength in its Rocky Mountain division, which saw revenue increase by nearly 700%, and strong increases in the Northeast due to a large semiconductor campus project.

E-Infrastructure adjusted operating margins remained robust at 24%, benefiting from strong execution on large, time-sensitive projects.

CEC Integration and Margin Trajectory

CEC, the electrical services acquisition, delivered 140% revenue growth and saw strengthening margins. Management highlighted that CEC's capacity was filled within 90 days of acquisition, much faster than anticipated. While CEC's margins are currently lower than site development, the company expects 300-500 basis points of margin improvement over the next 12-18 months by exiting low-margin legacy segments and benefiting from larger data center projects.

Long-term, the goal is to achieve EBITDA margins close to 20% for CEC.

Strategic Shift in Transportation Solutions

Transportation Solutions revenue declined 20% as Sterling actively reallocates resources to higher-margin E-Infrastructure projects. This shift is accelerating, with the Rocky Mountain operation generating more infrastructure revenue than transportation revenue for the first time. Despite the revenue decline, adjusted operating margins for Transportation Solutions reached 19.5%, up over 500 basis points year-over-year, reflecting a focus on more attractive opportunities within the market.

Record Backlog and Future Visibility

The company achieved record signed backlog of $4.3 billion, up 116% year-over-year, and combined backlog of $5.6 billion, up 150%. This, coupled with over $1.4 billion in high-probability future phase opportunities, provides visibility into a total addressable pool of work exceeding $7 billion.

Management emphasized that this figure is conservative, as it does not fully account for potential expansions on existing projects or newly acquired adjacent properties, which could extend project durations to 5-12 years.

Capacity Expansion and M&A Strategy

To meet the accelerating demand, Sterling is significantly increasing investments in people, equipment, and capabilities. The company faces tight capacity, especially for electricians, and is expanding recruiting and training programs. M&A is a key component of the strategy, with a focus on tuck-in acquisitions that bring strong local leadership and expand presence in attractive markets, like the recent Stone Ridge acquisition in the Pacific Northwest.

The upsized $1.5 billion revolving facility provides ample dry powder for these strategic acquisitions.

Emerging End Markets and Project Momentum

Beyond data centers, Sterling is seeing momentum in the broader manufacturing market, including an initial scope of work award for an electric vehicle plant in Atlanta. The company's strong performance on a large semiconductor campus in the Northeast is positioning it as a preferred solution for future semiconductor projects around 2030.

Management noted no significant delays in pharma or next-generation semiconductor projects, despite some political discussions around data center approvals.

Summary of the company's earnings call; see how call summaries are prepared. Not investment advice.