Casey Bell is the co-founder and CEO of Aecore, a technology-enabled commercial general contractor based in San Jose, California. A UC Berkeley graduate and former Turner Construction project manager, Bell took a payments startup called Net30 through Y Combinator's Summer 2017 batch, then pivoted the whole thing into a construction company built with software at its core. Aecore delivers office fit-outs, life sciences facilities, R&D centers, and retail buildouts while running its own proprietary tools for scheduling, photo documentation, and rapid pricing.
California Drywall Co. is one of the largest wall-and-ceiling specialty contractors in the United States, building interiors and exteriors across Northern California since 1946. From its San Jose base it delivers drywall, lath and plaster, metal framing, cold-formed steel engineering, fireproofing, acoustical ceilings, rainscreens and prefabricated wall panels for landmark projects including Apple Park, Levi's Stadium, SFO Terminal 2 and major hospitals. In August 2023 it became a 100% employee-owned company through an ESOP, putting equity in the hands of its roughly 700 team members.
Hathaway Dinwiddie is a 100% employee-owned general contractor headquartered in San Francisco that has spent more than a century building the landmarks California works, lives, and heals in - from the Salesforce Tower to the Lucas Museum of Narrative Art and more than 10 million square feet of life-science space on the Peninsula. Built on planning, adaptation, and proactive partnership, the firm pairs century-old craft with advanced BIM workflows, LEED-driven sustainability, and an industry-leading safety record.
Rudolph and Sletten is a California-based general contractor that has built much of Silicon Valley's physical fabric - from Apple Park and Lucasfilm's Skywalker Ranch to hospitals, research labs and university campuses. Founded in 1959 in a Los Altos garage, the firm pioneered guaranteed-maximum-price, fast-track delivery and grew into one of the West Coast's largest builders of technically complex healthcare, life-sciences and education projects. Now a subsidiary of Tutor Perini, it employs roughly 740 people and reports about $307 million in annual revenue.
Webcor is a San Francisco-based commercial general contractor and one of California's largest builders, known for self-performed concrete, finish carpentry and millwork, deep preconstruction and BIM expertise, and a portfolio of landmark projects from the California Academy of Sciences to the Salesforce Transit Center. Founded in 1971 and owned by Japan's Obayashi Corporation since 2007, Webcor pairs craft-trade self-performance with virtual-building technology to deliver complex, sustainable buildings across the state.
Matt Rossie is the President and CEO of Webcor, the San Francisco-based general contractor behind some of California's most complicated buildings. He climbed the company over 22 years from the client side of construction into the COO seat, then the corner office, on January 1, 2023.

Woodard & Curran is a 100% employee-owned environmental engineering and consulting firm founded in 1979 and headquartered in Portland, Maine. With roughly 1,300 employees across 30+ offices in 14 states, the firm integrates engineering, science, design-build, and operations to solve complex water and environmental challenges for municipal, industrial, and government clients. From treating 11.7 billion gallons of drinking water annually to cleaning up Superfund contamination sites, Woodard & Curran positions itself as the firm that takes on the hard problems in water infrastructure and environmental health — not as a contractor but as a long-term partner.