Willdan Group (WLDN) Q4 2025 earnings review
Record Year on Data Center Demand, But '26 Guidance Signals EPS Contraction
Willdan concluded a blowout Fiscal 2025 with strong 25Q4 results, beating their own upwardly revised full-year guidance. Net Revenue grew 12.9% in Q4, driving an explosive 143% increase in Net Income to $18.7M. Management correctly predicted the 'structural tailwind' of AI and data center electricity demand, which propelled their Energy segment to new heights. However, while top-line and EBITDA guidance for FY26 points to continued growth, implied Adjusted EPS guidance surprisingly reverses to negative growth. This is driven by share dilution and normalizing tax structures, creating a stark divergence between operating performance and shareholder returns.
🐂 Bull Case
The macro thesis is playing out perfectly. The surge in power demand from AI and broad electrification is directly translating into Willdan's backlog and double-digit Net Revenue growth in the Energy segment.
Willdan permanently elevated its profitability in 2025. Full-year Adjusted EBITDA margin landed at 21.8% of Net Revenue, consistently tracking above management's long-term 20% target throughout the back half of the year.
🐻 Bear Case
Net Revenue growth peaked in 25Q2 at +31% YoY, cooled to +25.5% in 25Q3, and further decelerated to +12.9% in 25Q4. The FY26 midpoint guidance implies roughly 9% top-line growth.
Despite forecasting higher revenue and EBITDA for FY26, Adjusted Diluted EPS guidance of $4.50-$4.70 represents an outright decline from the $4.89 achieved in FY25, heavily impacted by share dilution (guided to 15.8M shares).
⚖️ Verdict: ⚪
Neutral. The operational execution in FY25 was spectacular, but Q4 shows top-line deceleration. More concerningly, the FY26 guidance indicates that even if Willdan captures the AI power tailwinds perfectly, EPS will reverse downward due to capital structure mechanics.
Key Themes
Energy Segment Capitalizing on Grid Complexity
The Energy segment, which makes up ~73% of Net Revenue, continues to be the primary growth engine. Segment Net Revenue grew 15.7% YoY in 25Q4 to $65.5M. The demand for grid planning, substations, and utility interconnects—heavily catalyzed by data centers and previously acquired firms like APG—is providing multi-year visibility.
Engineering & Consulting Segment Lags
While the Energy segment is booming, the Engineering & Consulting segment is showing severe deceleration. Net Revenue for this segment grew just 5.7% YoY in 25Q4 (to $24.0M), down from 20.8% growth in Q1. If local government spending or basic engineering projects continue to slow, this segment will become a heavy drag on overall company growth.
Operating Leverage is Delivering the Bottom Line
Willdan is proving its ability to scale without bloating overhead. In FY25, while Net Revenue grew 23.1%, General & Administrative expenses grew at a slightly slower pace (23.4%), and gross profit grew 26.1%. This operating leverage caused Net Income to explode by 132.9% YoY for the full year.
Subcontractor Costs Eroding Gross Margins
Management prefers to talk about 'Net Revenue' (which strips out subcontractor costs), but looking at total Contract Revenue, subcontractor costs are eating a larger piece of the pie. These pass-through costs hit 48.5% of Contract Revenue in 25Q4, up from 45.0% in 24Q4. This suggests Willdan is increasingly reliant on third parties to execute its booming backlog, which limits long-term margin upside on a gross basis.
Other KPIs
Reversing. Willdan achieved a massive balance sheet flip over the last 12 months. Driven by strong operating cash flow, the company ended FY25 with $65.9M in cash and $48.5M in total debt, turning a year-ago net debt position of $15.3M into a net cash position of $17.4M. This provides significant firepower for future M&A.
Decelerating. While up 13.2% YoY from $17.7M, the growth rate slowed significantly compared to Q2 (+71%) and Q3 (+52.5%). However, at 22.3% of Net Revenue, margins remain structurally fantastic and well above the historical ~15-18% range.
Guidance
Decelerating. The midpoint of $397.5M implies a 9.0% YoY growth rate over FY25's $364.8M. This is a noticeable slowdown from the 23.1% growth achieved in FY25, signaling that base effects and the digestion of recent M&A are bringing top-line expansion back to earth.
Decelerating. The midpoint of $87.5M implies a 10.0% YoY increase over FY25's $79.5M. Because this growth rate outpaces the 9.0% guided Net Revenue growth, it implies continued, albeit modest, margin expansion into the ~22% territory.
Reversing. Despite top-line and EBITDA growth, EPS is guided to drop. The midpoint of $4.60 represents a 6.0% contraction from FY25's $4.89. This is heavily driven by an assumed increase in diluted shares (15.8 million vs FY25's 15.1 million) and likely normalization of their effective tax rate.
Key Questions
EPS Contraction Despite EBITDA Growth
FY26 guidance projects a 10% increase in Adjusted EBITDA but a ~6% decline in Adjusted EPS. Beyond the share count increase to 15.8M, are there specific tax headwinds (like the phase-out of 179D) or higher anticipated interest/depreciation burdens driving this divergence?
Engineering & Consulting Weakness
The Engineering & Consulting segment saw its Net Revenue growth decelerate to just 5.7% YoY in Q4. Is this a permanent normalization in public sector/municipal demand, or were there specific project timing issues in the quarter?
Subcontractor Reliance
Subcontractor costs rose to nearly 49% of Contract Revenue in Q4. Is this higher mix of third-party execution a structural requirement to service large data center and utility clients, or is it a temporary symptom of internal labor constraints?
LADWP Contract Status
During previous quarters, management noted the massive $330M LADWP contract would ramp in the back half of 2025. How much of the FY26 revenue guidance relies on this specific program operating at full run-rate?