Willdan Group, Inc.: management transactions · United States · SEC (Form 4)

About Willdan Group, Inc.

Willdan Group, Inc. is a U.S.-listed professional services company traded on NASDAQ (United States), with a core focus on engineering, energy solutions, and consulting for public agencies, utilities, and selected commercial clients. Founded in 1964, the business originally served public-sector agencies in mid-sized communities and has since broadened its scope through organic growth and acquisitions. Its corporate headquarters is in Anaheim, California. Willdan’s business model is organized around two reporting segments: Energy and Engineering and Consulting. The Energy segment is the larger earnings and revenue driver and includes energy efficiency programs, electrification, decarbonization, demand-side management, grid-related services, utility program administration, audits, design-build delivery, energy performance contracting, and software/data-enabled solutions. The Engineering and Consulting segment includes civil and electrical engineering, infrastructure planning, policy and advisory work, financial and municipal consulting, and related technical services. This mix gives Willdan exposure to both recurring program administration and project-based consulting work. From a competitive standpoint, Willdan occupies a specialized mid-cap niche rather than competing as a diversified mega-engineering firm. Its differentiator is the combination of technical engineering capability, energy-program execution, public-sector relationships, and advisory services tied to utility and infrastructure modernization. The company states that it serves clients across a nationwide network of offices in 22 states, the District of Columbia, Puerto Rico, and Canada. Revenue is heavily U.S.-centric, with meaningful concentrations in California, New York, and Arizona, while also serving a broader base of utilities, school districts, special districts, municipalities, and private-sector customers. Willdan’s product and service set is centered on practical implementation rather than pure software or asset ownership. It helps clients plan, design, and deliver projects aimed at improving efficiency, resilience, and sustainability. That includes electric-grid solutions, HVAC and building upgrades, solar PV, EV charging, microgrids, program management, policy advisory, and municipal financial consulting. This breadth supports cross-selling and positions the company to benefit from multi-year public and utility spending cycles linked to electrification and climate adaptation. Recent developments underscore an active expansion strategy. In 2025 and 2026, Willdan announced multiple contracts and acquisitions, including APG to strengthen electrical engineering capabilities and other awards tied to commercial energy efficiency, infrastructure upgrades, and public-sector resiliency projects. The company also continued to expand its municipal finance and advisory footprint. For investors, Willdan looks like a focused U.S. services platform leveraged to secular energy-transition spending, with growth driven by contract wins, execution depth, and acquisition-led capability expansion.