Direct Digital Holdings, Inc.

Company Overview We are an end-to-end, full-service advertising and marketing platform primarily focused on providing advertising technology, data-driven campaign optimization and other solutions to help brands, agencies and middle market businesses deliver successful marketing results that drive return on investment ("ROI") across both the sell- and buy-side of the digital advertising ecosystem. Direct Digital Holdings, Inc., incorporated as a Delaware corporation on August 23, 2021 and headquartered in Houston, Texas, is the holding company for DDH LLC, the business formed by our founders in 2018 through acquisitions of Colossus Media and Huddled Masses. Colossus Media operates our proprietary sell-side programmatic platform operating under the trademarked banner of Colossus SSP . In September 2020, DDH LLC acquired Orange 142 to further bolster its overall programmatic buy-side advertising platform and to enhance its offerings across multiple industry verticals. In February 2022, we completed our initial public offering and certain organizational transactions which resulted in our current structure. In October 2024, we announced the unification of our buy-side businesses, Orange 142 and Huddled Masses. Our sell-side advertising business, operated through Colossus Media, provides advertisers of all sizes a programmatic advertising platform that automates the sale of ad inventory between advertisers and marketers leveraging proprietary technology.