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Sterling Infrastructure (STRL) Q1 FY26 earnings call: guidance and Q&A

Earnings call· Mar 2026 (Q1 FY26)· Industrials· May 5, 2026

Source: earnings call transcript

Executive summary

Sterling Infrastructure Q1 FY26 — Record E-Infrastructure Growth and Strong Backlog

Sterling Infrastructure delivered a robust Q1 FY26, driven by exceptional growth in E-Infrastructure, particularly from data center demand and a significant semiconductor fab award. The company is strategically prioritizing high-return projects and expanding its capabilities, including modular construction, while navigating residential market headwinds and managing resource allocation across segments. Management is confident in its multi-year outlook, supported by strong backlog and customer pull into new geographies.

Highlights

5
  • Strong revenue growth of 92% in Q1 FY26.

  • Adjusted diluted EPS growth of 120% in Q1 FY26.

  • Adjusted EBITDA more than doubled with margins expanding over 150 basis points to a new Q1 record of 20%.

  • Combined backlog grew 131% to $5.2 billion, with total pool of work approaching $6.5 billion.

  • Awarded first phase of a multi-phase semiconductor fabrication campus, valued over $0.5 billion.

Concerns

2
  • Residential market expected to face strong headwinds throughout 2026, with Building Solutions revenue anticipated to be modestly down.

  • Transportation Solutions growth rates expected to moderate in remaining quarters due to early project starts, resource allocation to e-infrastructure, and wind down of Texas low-bid work.

Guidance & targets

CategoryTargetConfidence
Full-year 2026 Revenue
$3.7 billion to $3.8 billion
high materiality
High
Full-year 2026 Diluted EPS
$16.50 to $17.15
high materiality
High
Full-year 2026 Adjusted Diluted EPS
$18.40 to $19.05
high materiality
High
Full-year 2026 EBITDA
$801 million to $831 million
high materiality
High
Full-year 2026 Adjusted EBITDA
$843 million to $873 million
high materiality
High
Full-year 2026 Capital Expenditures
$100 million to $110 million
medium materiality
High
Full-year 2026 E-Infrastructure Revenue Growth
80% or higher
high materiality
High
Full-year 2026 E-Infrastructure Legacy Business Revenue Growth
60% or higher
high materiality
High
Full-year 2026 E-Infrastructure Adjusted Operating Profit Margins
mid-20% range
high materiality
High
Full-year 2026 Transportation Solutions Revenue Growth
low to mid-single-digit range
medium materiality
Medium
Full-year 2026 Building Solutions Revenue
modestly down
medium materiality
Medium
Full-year 2026 Building Solutions Adjusted Operating Margins
low double digits
medium materiality
Medium
CEC Margin Expansion
300 to 500 basis points
medium materiality
High

Segment performance

SegmentRevenueYoYQoQMargin
E-Infrastructure
Primary growth driver was the data center market. Margins expanded despite dilutive impact of CVC acquisition. Future phase work predominantly related to mission-critical projects.
Organic growth: over 100%Adjusted operating income: 177% increaseMission-critical work (data centers, large manufacturing, semiconductor): >90% of signed backlogCEC revenue growth: 78%CEC combined backlog increase: $1.2B since YE25E-Infrastructure signed backlog, unsigned awards, future phase opportunities: >$5B (+$2B since YE)
174% growth174%—mid-20% range (FY26 guide)
Transportation Solutions
Benefited from strong activity in the Rocky Mountain region due to favorable weather and earlier-than-anticipated project starts. Mix shift towards higher-margin projects drove margin improvement.
Backlog: $1.04BBacklog YoY increase: 20%Rocky Mountain region: strong activityTexas low bid heavy highway business: downsizing progressing
10% growth10%—26% growth (adjusted operating income)
Building Solutions
Encouraged by slight revenue increase, but anticipates residential market headwinds throughout 2026. Adjusted operating margins expected to be in the low double digits for FY26.
Homebuilder activity: pickupKey geographies: Dallas-Fort Worth, Houston, Phoenix
3% growth3%—8.7% (adjusted operating margins)

STRL operating KPIs by quarter

STRL operating KPIs stated on its earnings calls, by fiscal quarter
KPI Dec 2025 Q4 FY25This call Mar 2026 Q1 FY26 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 $3.8 billion Q1 FY26 end

78% year-over-year increase

Combined Backlog $5.2 billion Q1 FY26 end

131% increase

Future Phase Opportunities $1.3 billion Q1 FY26 end
Total Pool of Work (Signed Backlog + Unsigned Awards + Future Phase Opportunities) approaching $6.5 billion Q1 FY26 end

grown by approximately $2 billion since year-end

Book-to-Burn Ratio (Backlog) 2.1x Q1 FY26
Book-to-Burn Ratio (Combined Backlog) 3.5x Q1 FY26
Semiconductor Fabrication Campus Award (First Phase) over $0.5 billion Q1 FY26

Expected to be completed in late 2027 or early 2028.

Transportation Solutions Backlog $1.04 billion Q1 FY26 end

20% year-over-year increase

Deals & partnerships

Unnamed semiconductor company Awarded first phase of a multi-phase semiconductor fabrication campus. over $0.5 billion multi-decade period (campus build)

This first phase, which will be executed under a joint venture, totals over $0.5 billion and is expected to be completed in late 2027 or early 2028. The campus build is expected to span a multi-decade period and presents opportunities for additional scopes of work through 2027 and beyond.

Risks & headwinds

Residential Market Headwinds throughout 2026

Building Solutions revenue expected to be modestly down in 2026.

Mitigation:Diversified portfolio, focus on high-growth/high-margin end markets, opportunity for share gain coming out of down cycle.

Moderation of Transportation Solutions Growth remaining quarters of 2026

Transportation Solutions revenue expected to grow in the low to mid-single-digit range in 2026.

Mitigation:Driven by early project starts in Q1, resource allocation towards e-infrastructure projects, and final wind down of Texas low-bid work.

What to watch in Q2 FY26

E-Infrastructure Margin Trajectory

next quarter and beyond
Current 20% (Q1 record)
Target continued tick up

Why it matters

E-Infrastructure margins are a key driver of overall profitability, and management expects continued expansion due to complexity and vertical integration.

Our margins will improve, and they will improve for a couple of reasons. As these jobs become more complex, we drive better productivity... we will continue to see margins tick up in E-Infrastructure as we go forward.

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Q&A highlights

What drove better-than-expected Q1 revenue and margins, especially in a seasonally slower quarter? And how are current M&A targets "better" than before?

Favorable weather in Rocky Mountains helped Transportation, but E-Infrastructure's strong performance was due to larger, more complex projects leveraging vertical integration, driving productivity and margin expansion. M&A focuses on talent, geographic expansion (site development) and incremental services (electrical), with a broader look at customer needs.

“The larger they get, the more complex they get, the more we can leverage our vertical integration and our size and our scope, which drives more productivity. And that's why we've said all along and we feel even more confident as we're executing, we'll continue to see nice margin growth in eIfrastructure.”

asked by Sangita Jain · answered by Joseph Cutillo

2 min read 6 chapters

Detailed narrative

E-Infrastructure Growth Drivers

The E-Infrastructure segment saw significant growth, with revenue up 174% (over 100% organic), primarily driven by the data center market. The company is being pulled into new geographies like Texas, Pacific Northwest, and Midwest by hyperscaler customers, with projects growing in size, complexity, and duration, now reaching multi-thousand acres and 4-5 year durations. This trend reinforces confidence in multi-year opportunities.

Strategic Project Selection and Vertical Integration

Sterling is focused on "the best projects" rather than all projects, leveraging its vertical integration and scale to drive productivity and margin expansion. This approach has led to margins expanding despite the dilutive impact of the CVC acquisition, with E-Infrastructure adjusted operating income increasing 177%.

The company believes margins will continue to tick up due to increased project complexity, vertical integration, and combined electrical/site civil packages.

Semiconductor Market Entry

The company was awarded the first phase of a multi-phase semiconductor fabrication campus, valued over $0.5 billion, to be executed under a joint venture in the Northeast by its Pilla union operation. This marks Sterling's entry into the semiconductor market, which is expected to accelerate significantly from 2029-2030, positioning Sterling as a key supplier.

CEC Integration and Expansion

The integration of CEC (electrical services) is progressing ahead of schedule, with joint data center projects materializing 6-8 months earlier than expected. The company is bullish on CEC's margin expansion, targeting 300-500 basis points in 12-18 months by exiting lower-margin work and leveraging combined offerings. Sterling is also tripling its modular build capabilities and plans to expand to other locations.

Transportation and Building Solutions Outlook

Transportation Solutions, despite being a "cash cow" with strong margins, is seeing assets shifted towards E-Infrastructure. Its low-bid heavy highway business in Texas is winding down, with underground assets being converted to support E-Infrastructure. Building Solutions, while showing a slight revenue increase, is expected to be modestly down for FY26 due to residential market headwinds, but the company sees long-term growth potential in its key markets.

M&A Strategy and Capacity

Sterling is actively seeking high-quality acquisition targets, particularly for geographic expansion in site development and incremental services in electrical. The focus is on acquiring talent and capabilities that enhance its portfolio and support customer needs, with a strong balance sheet to capitalize on opportunities. The company acknowledges the challenge of finding suitable site development acquisitions due to its unique scale.

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