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Organization and Description of Business | 9 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Organization and Description of Business | Note 1 — Organization and Description of Business Direct Digital Holdings, Inc., incorporated as a Delaware corporation on August 23, 2021 and headquartered in Houston, Texas, together with its subsidiaries, is 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. is the holding company for Direct Digital Holdings, LLC (“DDH LLC”), the business formed by the Company's founders in 2018 through acquisitions of Colossus Media, LLC (“Colossus Media”) and Huddled Masses, LLC (“Huddled Masses®” or “Huddled Masses”). Colossus Media operates the Company’s proprietary sell-side programmatic platform ("SSP") operating under the trademarked banner of Colossus SSP TM (“Colossus SSP”). In September 2020, DDH LLC acquired Orange142, LLC (“Orange 142”) to further bolster its overall programmatic buy-side advertising platform and to enhance its offerings across multiple industry verticals. In February 2022, Direct Digital Holdings, Inc. completed an initial public offering of its securities and, together with DDH LLC, effected a series of transactions (together, the “Organizational Transactions”) whereby Direct Digital Holdings, Inc. became the sole managing member of DDH LLC, the holder of 100% of the voting interests of DDH LLC and the holder of 19.7% of the economic interests of DDH LLC, commonly referred to as an “Up-C” structure. (See Note 6 — Related Party Transactions). In October 2024, the Company announced the unification of its buy-side businesses, Orange 142 and Huddled Masses. In these condensed consolidated financial statements, the “Company,” “Direct Digital,” “Direct Digital Holdings,” “DDH,” “we,” “us” and “our” refer to Direct Digital Holdings, Inc., and, unless otherwise stated, all of its subsidiaries, including DDH LLC and, unless otherwise stated, its subsidiaries. All of the subsidiaries are incorporated in the state of Delaware, except for DDH LLC, which was formed under the laws of the State of Texas. Direct Digital Holdings, Inc. owns 100% of the voting interest in DDH LLC and as of September 30, 2025, it owns 63.5% of the economic interest in DDH LLC. See further discussion of the Up-C structure in Note 6 — Related Party Transactions. DDH LLC was formed on June 21, 2018 and acquired by DDH on February 15, 2022 in connection with the Organizational Transactions. DDH LLC’s wholly-owned subsidiaries are as follows:
Subsidiary |  | Business Segment |  | Date of Formation |  | Date of Acquisition
Colossus Media, LLC |  | Sell-side |  | September 8, 2017 |  | June 21, 2018
Orange142, LLC |  | Buy-side |  | March 6, 2013 |  | September 30, 2020
Huddled Masses, LLC |  | Buy-side |  | November 13, 2012 |  | June 21, 2018
Our sell-side advertising business, operated through Colossus Media, provides advertisers of all sizes an advertising platform that automates the sale of ad inventory between advertisers and marketers. Our platform is intended to help brands, media holding companies, independent agencies or emerging businesses reach audiences, curated creators and publishers find the right brands for their readers, as well as drive advertising yields across all channels: web, mobile, and connected TV ("CTV"). Our platform offers advertising inventory and creator content that is intended to align with brands, media holding companies and mid-market agencies focusing on key growth audiences. Our buy-side advertising business, now operating as Orange 142, provides technology-enabled advertising solutions and consulting services to clients through multiple demand side platforms (“DSPs”), across multiple industry verticals such as travel and tourism, higher education, energy, healthcare, financial services, consumer products and other sectors with particular emphasis on small and mid-sized businesses transitioning into digital with growing digital media budgets. In the digital advertising space, buyers, particularly small and mid-sized businesses, can potentially achieve significantly higher ROI on their advertising spend compared to traditional media advertising by leveraging data-driven over-the-top/connected TV (“OTT/CTV”), video and display, in-app, native including programmatic, search, social, influencer marketing and audio advertisements that are delivered both at scale and on a highly targeted basis. Providing both the front-end, buy-side operations coupled with the Company’s proprietary sell-side operations is intended to enable the Company to curate the first through the last mile in the ad tech ecosystem execution process to drive higher results.

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