Exhibit 99.1 Adjusted EBITDA Margin of 42% in Fourth Quarter (2) NEW YORK – February 26, 2025 – Magnite (NASDAQ: MGNI), the world's largest independent sell-side advertising company, today reported its results of operations for the fourth quarter and year ended December 31, 2024. Recent Highlights: Expectations: "CTV performed well above expectations based on strength from our partnerships with many of the largest industry players. 1 • Revenue of $194.0 million for Q4 2024, up 4% from Q4 2023 • Contribution ...

Core Insights - Magnite reported a total revenue of $194.0 million for Q4 2024, reflecting a 4% increase from Q4 2023 [5] - Contribution ex-TAC for Q4 2024 was $180.2 million, up 9% year-over-year, with CTV contribution growing 23% to $77.9 million [5][6] - Adjusted EBITDA for Q4 2024 was $76.5 million, representing a 42% margin, compared to 43% in Q4 2023 [5][6] Financial Performance - Revenue for the full year 2024 reached $668.2 million, an 8% increase from $619.7 million in 2023 [6] - Net income for Q4 2024 was $36.4 million, or $0.24 per diluted share, compared to $30.9 million, or $0.16 per diluted share in Q4 2023 [5][6] - Adjusted EBITDA for the full year 2024 was $196.9 million, a 15% increase from $171.4 million in 2023 [5][6] Future Outlook - The company expects total Contribution ex-TAC for Q1 2025 to be between $140 million and $144 million, with CTV contribution projected between $61 million and $63 million [5] - For the full year 2025, Magnite anticipates Contribution ex-TAC growth above 10%, with mid-teens growth excluding political factors [5] - Adjusted EBITDA margin is expected to expand by at least 100 basis points in 2025, with mid-teens percentage growth in Adjusted EBITDA and high-teens to 20% growth in free cash flow [5]

DIRECTV Advertising grows streaming scale and fortifies relationship with Magnite to meet expected potential increases in volumes for live sports in-game inventoryNEW YORK, Feb. 20, 2025 (GLOBE NEWSWIRE) -- Magnite (NASDAQ: MGNI), the largest independent sell-side advertising company, and DIRECTV Advertising, a pioneer in the converged TV addressable space, are leveraging programmatic demand capabilities to unlock the full potential of live streaming advertising. Magnite and DIRECTV Advertising’s collaborat ...

Group 1 - Magnite, the largest independent sell-side advertising company, will host in-person investor meetings at the Susquehanna Financial Group 14th Annual Technology Conference in New York City on February 27, 2025 [1] - The company provides technology for publishers to monetize content across various formats including CTV, online video, display, and audio [2] - Magnite's platform is trusted by leading agencies and brands to access high-quality ad inventory and execute billions of advertising transactions monthly [2] Group 2 - Magnite has a global presence with offices in North America, EMEA, LATAM, and APAC, including locations in New York City, Los Angeles, Denver, London, Singapore, and Sydney [2]

Core Insights - Magnite is collaborating with Sky New Zealand to enable programmatic advertising on Sky Sport Now, enhancing access to premium live sports inventory for advertisers [1][4] - Sky Sport Now boasts 51.3 million annual streams and covers an average of 35 sporting codes, providing advertisers with significant opportunities for data-driven targeting [2][3] - The partnership aims to deliver a premium viewing experience while facilitating efficient inventory packaging for advertisers [4] Company Overview - Sky New Zealand is the leading entertainment company in New Zealand, offering a wide range of live sports, movies, shows, documentaries, and news [5] - Magnite is the world's largest independent sell-side advertising company, providing technology for publishers to monetize content across various formats including CTV, online video, display, and audio [6]

Core Insights - Magnite, the world's largest independent sell-side advertising company, will announce its financial results for Q4 2024 on February 26, 2025, after market close [1] - A conference call will be held on the same day at 1:30 PM PT / 4:30 PM ET to discuss the financial results and outlook [1] Company Overview - Magnite operates as a technology platform that enables publishers to monetize their content across various formats including CTV, online video, display, and audio [3] - The company is trusted by leading agencies and brands to access high-quality, brand-safe ad inventory, executing billions of advertising transactions monthly [3] - Magnite has a global presence with offices in North America, EMEA, LATAM, and APAC, including locations in New York City, Los Angeles, Denver, London, Singapore, and Sydney [3]

Samsung TV Plus Expansion - Samsung TV Plus is now available on millions of Samsung Smart TVs in Singapore, the Philippines, and Thailand, offering free access to live TV channels across entertainment, news, and movies [1] - Popular channels like MythBusters, Survivor, Deal or No Deal, and Red Bull TV are among the first to launch on the platform, with more global and local channels expected in early 2025 [1] - Advertisers can now programmatically access Samsung TV Plus' premium in-stream inventory for the first time, marking a significant opportunity for targeted advertising [1][6] Samsung Ads Overview - Samsung Ads operates on a global scale, leveraging data from millions of Smart TVs across Southeast Asia to provide advanced TV advertising solutions [2] - The platform connects linear TV, OTT, and gaming, offering advertisers a holistic view of advanced TV audiences and enabling incremental reach and outcome measurement [2] - Samsung Ads, a division of Samsung Electronics, is the 1 TV manufacturer globally and operates in multiple regions including North America, Latin America, Europe, South Korea, ANZ, Southeast Asia, and India [2][5] Partnership with Magnite - Magnite, the largest independent sell-side advertising company, has strengthened its partnership with Samsung Ads to enable programmatic advertising on Samsung TV Plus in Singapore, the Philippines, and Thailand [6] - The collaboration allows advertisers to access premium video inventory on Samsung TV Plus, a free ad-supported streaming TV (FAST) service, through Magnite's programmatic platform [6] - Magnite's technology supports publishers in monetizing content across CTV, online video, display, and audio, with a presence in key global markets including New York, Los Angeles, London, Singapore, and Sydney [7] Market Opportunity in Southeast Asia - The combination of high Smart TV adoption and increased consumption of ad-supported streaming content in Southeast Asia presents a significant market opportunity [4] - Seven in ten TV viewers in the region already watch ad-supported streaming content, making Samsung TV Plus a valuable platform for advertisers to reach this audience [4] - Samsung Ads' FAST service, launched in just 12 months, reflects the company's confidence in the region's growth potential and its ability to scale programmatic advertising solutions [4]

Group 1 - Magnite has been selected as FIFA+'s global programmatic provider, enhancing the football streaming experience for fans worldwide [1][2] - The collaboration will utilize Magnite's product suite, including Magnite Streaming, SpringServe, and Magnite DV+, to monetize FIFA+'s content globally [2] - This partnership aims to deliver programmatic advertising across various devices, including mobile, desktop, and CTV, improving the viewing experience for fans [2][3] Group 2 - FIFA+ is a digital platform that offers free access to live matches, highlights, documentaries, and archived football content, launched in 2022 [4] - The platform is expanding its reach, providing unprecedented access to football for fans globally [4] - Magnite's technology will enable FIFA+ to meet consumer demand for more accessible live sports content and enhance advertising opportunities [3]

Core Insights - AdGood has launched a nonprofit CTV advertising platform aimed at providing affordable, high-quality TV ad space for nonprofits to enhance their outreach and fundraising efforts [1][2][4]. Company Overview - AdGood is a 501(c)(3) nonprofit organization focused on empowering other nonprofits by offering access to premium Connected TV (CTV) advertising [7]. - The platform was founded by Kris Johns, a veteran in advertising technology, and aims to transform how nonprofits connect with their communities [2][7]. Market Opportunity - There are over 1.8 million nonprofit organizations in the United States, indicating a significant market for AdGood's services [2]. - By partnering with publishers to utilize unused or unsold CTV ad inventory, AdGood creates accessible advertising opportunities for nonprofits of all sizes [7]. Advertising Impact - Nonprofits using AdGood can achieve up to 400% more impressions for the same budget compared to other platforms, maximizing their advertising impact [4]. - The platform allows nonprofits to increase awareness, engage new audiences, enhance retargeting efforts, and drive traffic to their websites through affordable CTV campaigns [2][4]. Partnerships and Support - Magnite, the largest independent sell-side advertising company, supports AdGood by providing access to donated inventory through its ad server and Streaming SSP [5][6]. - AdGood connects nonprofits with agencies to facilitate access to premium CTV inventory, enhancing the overall effectiveness of their advertising efforts [4][5].

Core Insights - Magnite and Playwire have formed a strategic partnership to offer Playwire's Flex Suite creative formats exclusively through Magnite, enhancing programmatic advertising capabilities [1][2] - The collaboration aims to bridge the gap between advertisers and publishers, ensuring more advertising dollars reach publishers directly and supporting the sustainability of ad-supported content [3] Company Overview - Magnite is the largest independent sell-side advertising company, providing technology for publishers to monetize content across various formats including CTV, online video, display, and audio [5] - Playwire specializes in ad monetization for digital publishers, utilizing proprietary technology to enhance revenue through high-impact ad formats [6] Partnership Details - The partnership allows advertisers to programmatically access Playwire's high-impact ad formats, such as Flex Video, Flex Skin, and Flex Rail, across a network of pre-certified publishers [2] - Playwire's Flex Suite includes large-format mobile video, custom skin placements, and expandable mobile units, all designed to provide engaging user experiences across devices [4] Industry Impact - This collaboration is expected to change the perception of programmatic display advertising by offering innovative ad formats that go beyond traditional banner ads, thus improving performance for advertisers [4]