Direct Digital Holdings, Inc. is a holding company that provides an end-to-end, programmatic advertising platform. The Company is primarily focused on providing advertising technology, data-driven campaign optimization and other solution to help brands, agencies and middle market businesses deliver marketing results that drive return on investment across both the sell- and buy-side of the digital advertising ecosystem. Through its subsidiary, Colossus Media, LLC, operates its sell-side programmatic platform operating under the trademarked banner of Colossus SSP, offers advertisers of all sizes with market reach. Its subsidiaries, Huddled Masses, LLC and Orange142, LLC, are buy-side advertising and marketing service providers. Its buy-side advertising business offers technology-enabled advertising solutions and consulting services to clients through multiple demand side platforms, across multiple industry verticals such as travel and tourism, energy, higher education, and other sectors.