Standard Industries

Standard Industries

Standard Industries operates as a privately-held global industrial company with a family-office investment posture. David Winter and David Millstone — the sons-in-law of the late billionaire David Koch — co-own and co-lead the business, though the firm itself has never publicly disclosed the precise nature of the wealth transfer. The group generates significant cash flow from its core materials and building-products divisions, which serve as a permanent capital base for venture, real estate, and corporate carve-out investments. The operating ecosystem spans three primary verticals. Standard Building Solutions houses GAF, BMI Group, Siplast, and Specialty Granules — roofing and waterproofing businesses that collectively employ over 20,000 people and operate in more than 80 countries. Standard Performance Materials holds W.R. Grace, a specialty chemicals and materials platform the firm acquired in 2021. Standard Investments, the venture and growth equity arm, deploys capital across energy transition, advanced materials, AI/ML, and industrial technology. The real estate division, Winter Properties, focuses on office, residential, and mixed-use development in New York and other US gateway cities. Confirmed portfolio exposures include W.R. Grace, GAF, and the commercial property at 74 Grand Street in Manhattan. The firm employs more than 20,000 people globally and ranked among America's top private companies in 2025, generating billions in annual revenue. Standard Investments added former Deutsche Bank investment-bank head Mark Fedorcik as a senior leader in March 2025. In June 2025, the firm named Molecule.one the winner of its $1 million AI challenge, signaling active origination at the intersection of machine learning and materials science. Standard maintains a speaker series that has featured energy historian Daniel Yergin. What separates Standard from a conventional operating company is how it weds heavy industrial cash flows to a permanent-capital investment engine. There is no limited-partner redemption pressure and no outside fundraising cycle — the building-materials businesses generate the dry powder. That structure allows Standard Investments to write equity checks from the balance sheet and hold assets indefinitely, a posture more common among sovereign wealth funds than privately-held industrials.