Magnite this month reported its first-quarter 2026 financial results, recording a net income of $4.4 million for the three months ended March 31, 2026 - a sharp reversal from a net loss of $9.6 million in the same period of 2025. The results, announced on May 6, 2026, mark a structural milestone for the independent sell-side advertising company:connected television advertising has crossed 51% of total contribution ex-TAC for the first time, up from 43% a year earlier.

Total revenue reached $164.4 million in Q1 2026, up 6% from $155.8 million in Q1 2025. The headline revenue figure, however, understates the momentum in the company's core business. Contribution ex-TAC - the non-GAAP measure that strips out traffic acquisition costs paid to sellers for gross-basis transactions - grew 10% year-over-year to $160.9 million, landing at the high end of the company's own guidance range of $157 million to $161 million.

Adjusted EBITDA grew 16% to $42.9 million, representing a margin of 26.6% as a percentage of contribution ex-TAC, compared with 25.2% in Q1 2025. Non-GAAP earnings per share came in at $0.13, compared with $0.12 in the prior year quarter. On a diluted GAAP basis, Magnite reported earnings of $0.03 per share versus a loss of $0.07 per share in Q1 2025.

CTV performance and channel breakdown

The CTV line carried the quarter. Contribution ex-TAC attributable to connected television rose 30% year-over-year to $82.3 million, within the guidance range of $81 million to $83 million. That figure represents 51% of total contribution ex-TAC, up from 43% in Q1 2025. The remaining contribution came from mobile at 34% ($55.4 million, down 5% year-over-year) and desktop at 15% ($23.3 million, down 5%).

CTV revenue reported on a GAAP basis also reflects the channel's growing weight: CTV generated $85.4 million in revenue in Q1 2026, compared with $72.5 million in Q1 2025, representing 52% of total revenue. Mobile contributed $55.6 million (34%) and desktop $23.4 million (14%).

According to the earnings call transcript, CEO Michael Barrett described the CTV momentum as broad-based. "We saw continued growth across leading publishers, including LG Ads, Netflix, Paramount, Roku, Vizio, Walmart, and Warner Brothers Discovery," Barrett stated. "Our top 10 accounts grew in the mid-30% range year-over-year, with the rest of the base growing in the mid-20s."

Barrett cited live sports as one of the strongest sub-segments. March Madness revenue grew more than 80% year-over-year, though Barrett acknowledged the overall inventory pool for live sports in programmatic remains small relative to its potential. "Live sports as a consumer, you see live sports everywhere in streaming, but programmatically, very little inventory is bought and sold programmatically," he said on the call.

SpringServe as operating infrastructure

Much of the CTV growth traces to SpringServe, the combined ad server and supply-side platform that Magnite built through its 2021 acquisition of SpringServe and the subsequent integration announced in April 2025. According to the 10-Q filed May 6, 2026, the company introduced its next-generation SpringServe CTV platform in April 2025, combining the features and functionalities of its streaming SSP and ad server into a single layer.

Barrett described SpringServe on the earnings call as having "evolved from a best-in-class ad server into the operating system for CTV monetization." The platform occupies the center of the transaction by unifying demand, optimizing yield, managing ad experience, and orchestrating data across publisher workflows. According to the company, no other scaled platform currently combines ad serving, mediation, and monetization infrastructure in a single layer at comparable scale.

FanDuel Sports Network reported a 25% year-over-year increase in total impressions through SpringServe, illustrating the platform's transaction volume before new AI-assisted capabilities were added in late April 2026.

Magnite also expanded commerce media partnerships during the quarter. According to Barrett, the company had 21 commerce media partners as of the earnings call, with 13 deployed and actively ramping. Partnerships announced during or just before the period include Walmart Connect's Connect Select program, which uses Magnite as an SSP partner for CTV and omnichannel inventory, and Roku Curate, powered in part by Magnite SpringServe, which pairs platform insights with third-party purchase data. Expedia Group Advertising also partnered with Magnite to let brands target high-intent audiences using Expedia's first-party data across off-platform video and display.

DV+ and macroeconomic headwinds

The display, video, and audio (DV+) segment - which covers mobile, desktop, and non-CTV inventory - declined 5% year-over-year on a contribution ex-TAC basis to $78.6 million. That figure nonetheless exceeded the upper end of Magnite's own guidance range of $76 million to $78 million.

CFO David Day identified automotive as a specific weak spot during the Q&A portion of the call. "You see it in a couple of verticals in particular, automotive, most importantly, and that was down significantly, technology also," Day noted. He characterized the macroeconomic environment as carrying some overhang from tariff uncertainty and supply chain challenges, while stopping short of projecting a broader downturn.

Barrett pointed to pockets of relative strength within DV+. Mobile and app grew 8% year-over-year and remains, in his characterization, a durable growth segment. Audio was cited as a promising growth category, and digital out-of-home was referenced as a fast-growing area in the wider market. Commerce media activity is beginning to cross over into DV+ formats as retail partners expand beyond their owned and operated inventory.

Barrett also addressed the DV+ competitive environment directly. He stated that Magnite's large agency partners had largely restored their OpenPath integrations after a disruption in prior quarters, characterizing the situation as one where the company is "still here and doing quite well."

Cost structure and operating leverage

Total operating expenses were $156.7 million in Q1 2026, essentially flat from $157.1 million in Q1 2025. Cost of revenue fell 4% to $60.4 million, driven primarily by a $6.5 million reduction in traffic acquisition costs - the result of a shift in revenue mix away from gross-basis transactions. Gross-basis revenue declined to 4% of total revenue in Q1 2026 from 11% in Q1 2025, reflecting continued migration of advertisers toward automated, net-basis programmatic transactions.

Cloud hosting, data center, and bandwidth costs increased $2.6 million year-over-year inside cost of revenue. Technology and development expenses grew 13% to $25.2 million, reflecting increases of $1.7 million in event and travel-related expenses and $1.2 million in personnel costs. Sales and marketing fell 4% to $46.1 million, largely because certain acquired intangible assets became fully amortized during 2025.

Day credited cloud optimization and early AI-related productivity gains for the operating expense improvement versus guidance. "The primary driver of those savings are kind of two fronts," Day explained. "One is moving some of our activity from the cloud to on-prem. And also, our dev team is doing a great job in optimizing how we run more efficiently on the cloud."

Adjusted EBITDA operating expenses for Q1 came in at $118 million, which was $4 million better than guidance. A new data center in Northern California is expected to come online later in 2026, providing additional capacity for further cloud-to-on-prem migration and continued margin improvement.

Balance sheet and capital allocation

Cash and cash equivalents fell to $184.6 million at March 31, 2026, from $553.4 million at December 31, 2025. The primary driver was the March 15, 2026 repayment of $205.1 million in aggregate principal on the company's Convertible Senior Notes, which matured on that date and were retired in full with cash on hand. Those notes were originally issued in March 2021 at a principal of $400 million and carried a 0.25% coupon. The company had previously repurchased $194.9 million of principal in the open market during 2023, leaving $205.1 million outstanding at maturity.

Outstanding debt at quarter end consisted solely of the 2024 Term Loan B Facility, with a net carrying value of $350.8 million. The current contractual interest rate on that facility was 6.67% as of March 31, 2026 - the result of two amendments to the original 2024 credit agreement that progressively reduced the margin from Term SOFR plus 4.50% to Term SOFR plus 3.00% by March 2025. Net leverage at quarter end stood at 0.7x trailing four-quarter adjusted EBITDA, within the company's stated target of less than 1x.

During Q1, Magnite repurchased or withheld 2.2 million shares for approximately $29 million in aggregate. Of that figure, 1.1 million shares were repurchased under the 2026 Repurchase Plan, which the board approved on February 23, 2026, authorizing up to $200 million in common stock buybacks through February 2028. As of March 31, 2026, $186 million remained available under the program. Day stated the company intends to direct approximately 50% of free cash flow to shareholders via share repurchases going forward, now that the convertible notes obligation has been retired.

Operating cash flow - defined by Magnite as adjusted EBITDA less capital expenditures - was $23.3 million in Q1, up from $18.2 million in Q1 2025. Capital expenditures including hardware purchases and capitalized internal use software development totaled $19.6 million in the quarter.

AI integration and agentic workflows

A significant portion of the earnings call focused on artificial intelligence. Magnite expanded its AI capabilities across SpringServe and its supply-side platform on April 27, 2026 - just before the earnings announcement - adding anomaly detection, demand path optimization, and dynamic pricing to SpringServe's mediation layer. The company also introduced a buyer-side agent tested with Disney Advertising, Kepler, MiQ, and Spectrum Reach. The April 27 announcementmarked the broadest set of industry partners Magnite had named in a single AI rollout.

Magnite's first seller agent test inside SpringServe ran in December 2025 with Scope3 as the buyer agent partner. The January 2026 announcement of that integration established proof of concept for agent-to-agent CTV advertising before the Q1 period began.

Barrett described the AI benefit primarily in terms of workflow productivity rather than discrete revenue streams. "The biggest benefit you're going to see from it is workflow and productivity, because these are easier to use," he said. "Instead of toggling between 13 different dashboards, you can just, in natural language, ask the agent to perform a task." He suggested 2026 remains a year of modest AI-related revenue flows, with more material financial impact expected in 2027.

Barrett also addressed a question about whether AI agents talking directly to each other might erode the need for SSP infrastructure. His response was direct: the infrastructure role - verifying inventory quality, collecting payment, policing fraud, managing bandwidth and servers for transactions occurring trillions of times per day - does not become redundant simply because the front-end interface shifts to a natural language agent. "We're the rails upon which the transactions take place," he said.

Google antitrust and pending remedies

Magnite's exposure to the Google adtech antitrust proceedings continued to be a topic of discussion. The company filed its own lawsuit against Google on September 16, 2025, alleging anticompetitive conduct in the ad exchange and ad server markets that restricted publishers' ability to use competing services and artificially depressed Magnite's win rates within the Google display ad server. As reported by PPC Land, the complaint alleges violations of Sections 1 and 2 of the Sherman Act and seeks treble damages.

The underlying antitrust ruling, issued by the US District Court for the Eastern District of Virginia on April 17, 2025, found that Google had illegally monopolized the publisher ad server market and the ad exchange market, and had unlawfully tied the two products together. Remedies proceedings followed through late 2025, but no remedy decision had been issued as of the earnings call date.

Barrett expressed measured optimism. "I completely anticipate a favorable ruling for us and impact in 2026," he said, while acknowledging that the form and timing of any remedy would determine how quickly effects flow through. Behavioral remedies could take effect quickly, he suggested, while technical changes might require Google's own cited window of six to nine months to implement.

The 10-Q filed May 6, 2026 notes that the company's display estimates exclude any potential market share gains resulting from Google adtech remedies, meaning the guidance figures are a floor rather than a ceiling if remedies alter competitive dynamics.

Q2 2026 guidance and full-year outlook

For Q2 2026, Magnite expects total contribution ex-TAC between $177 million and $181 million, representing 9% to 12% year-over-year growth. CTV contribution ex-TAC is guided to $90 million to $92 million (26% to 29% growth), while DV+ is expected between $87 million and $89 million (a decline of 4% to 2%). Adjusted EBITDA operating expenses for Q2 are projected at $115 million to $117 million, implying an adjusted EBITDA margin of 34% to 36%.

For the full year 2026, Magnite raised its adjusted EBITDA margin target to at least 35.5% from the prior guidance of greater than 35%, and raised its free cash flow growth target to the mid-30% range from the prior guidance of greater than 30%. The company reaffirmed total contribution ex-TAC growth of at least 11% for the full year, adjusted EBITDA percentage growth in the mid-teens, and capital expenditure guidance of approximately $60 million.

Management transition

The earnings call included a formal announcement of CFO David Day's planned retirement. Day, who joined before Magnite's 2014 initial public offering as Rubicon Project, will remain as CFO through September 30, 2026 while the company evaluates internal and external candidates. Barrett praised Day's financial stewardship across the company's IPO, its merger with Telaria, and the acquisitions of SpotX and SpringServe.

The announcement carries practical implications for continuity of financial guidance and institutional knowledge during an active phase of AI product development, litigation, and potential Google antitrust remedy implementation.

Why this matters for the marketing community

The Q1 2026 figures resolve a question that was open at the start of the year: whether the 30%-plus CTV growth Magnite recorded in Q4 2025 - excluding political advertising - was structural or cyclical. The Q1 2026 figure of 30% growth in a quarter with no political advertising activity suggests the underlying demand is real and not an artifact of budget reallocation from the prior election period. PPC Land covered the Q4 2025 results in February and identified that structural shift as the key question going into 2026.

For marketers and agencies, the emergence of CTV as the majority of Magnite's contribution ex-TAC reflects a measurable shift in where premium video inventory is being bought and sold programmatically. The expansion of commerce media partnerships - combining retail first-party data with CTV inventory access through an independent SSP - also has direct implications for how brands structure data-enriched video campaigns outside the walled garden ecosystem.

The DV+ trajectory carries separate weight. Magnite's open-web display inventory is positioned to benefit if the Google adtech antitrust remedies create more competitive access to the Google publisher ad server - a dynamic the company describes explicitly in its 10-Q. That contingency is not in the guidance, which means the existing financial trajectory is independent of any remedy outcome.

Timeline

  • April 2007 - Magnite (then Rubicon Project) founded in Delaware and begins operations
  • April 2020 - Rubicon Project merges with Telaria and rebrands as Magnite
  • March 2021 - Magnite issues $400 million aggregate principal of 0.25% Convertible Senior Notes; completes acquisition of SpotX; acquires SpringServe
  • February 2024 - Magnite refinances debt under the 2024 Credit Agreement with a $365 million Term Loan B Facility maturing in February 2031 and a $175 million revolving credit facility
  • September 2024 - Magnite reduces Term Loan B rate by 75 basis points to Term SOFR plus 3.75%
  • April 17, 2025 - US District Court for the Eastern District of Virginia rules Google illegally monopolized the publisher ad server and ad exchange markets
  • April 23, 2025 - Magnite merges SpringServe ad server with SSP technology into a unified streaming advertising platform
  • September 9, 2025 - Magnite acquires Streamr.ai, an AI-powered platform for CTV creative and campaign setup targeting small and medium-sized businesses
  • September 16, 2025 - Magnite files antitrust lawsuit against Google in the Eastern District of Virginia alleging Sherman Act violations
  • November 5, 2025 - Magnite reports Q3 2025 results with CTV contribution ex-TAC growing 18% (25% excluding political) to $75.8 million
  • January 6, 2026 - Magnite embeds seller agent into SpringServe, completing first agentic advertising test with Scope3
  • February 23, 2026 - Board approves new $200 million share repurchase plan through February 2028
  • February 25, 2026 - Magnite reports Q4 and full-year 2025 results; CTV contribution ex-TAC grew 32% excluding political; full-year revenue of $714 million
  • March 15, 2026 - Magnite repays $205.1 million outstanding principal on Convertible Senior Notes at maturity
  • March 18, 2025 - Term Loan B rate reduced a further 75 basis points to Term SOFR plus 3.00%
  • April 15, 2026 - AMC Global Media linear TV inventory goes programmatic through Magnite ClearLine, ahead of 2026-27 upfront season
  • April 27, 2026 - Magnite expands AI buyer agent and SpringServe mediation with Disney Advertising, Kepler, MiQ, and Spectrum Reach
  • May 6, 2026 - Magnite reports Q1 2026 results: revenue of $164.4 million (up 6%), net income of $4.4 million, CTV contribution ex-TAC of $82.3 million (up 30%), adjusted EBITDA of $42.9 million (up 16%)

Summary

Who: Magnite, Inc. (Nasdaq: MGNI), the largest independent sell-side advertising platform, headquartered in New York. CEO Michael Barrett and CFO David Day presented the results. Day announced his planned retirement, effective September 30, 2026.

What: First-quarter 2026 financial results showing revenue of $164.4 million (up 6% year-over-year), net income of $4.4 million (versus a net loss of $9.6 million in Q1 2025), CTV contribution ex-TAC of $82.3 million (up 30%), total contribution ex-TAC of $160.9 million (up 10%), and adjusted EBITDA of $42.9 million (up 16%, margin of 27%). The company also announced Q2 2026 guidance and raised its full-year adjusted EBITDA margin target to at least 35.5%.

When: Results for the three months ended March 31, 2026, reported on May 6, 2026, on an earnings call at 8:30 PM GMT. The 10-Q was signed by CEO Michael Barrett and CFO David Day, both dated May 6, 2026.

Where: Magnite operates globally with principal offices in New York, Los Angeles, Denver, London, and Sydney. US revenue was $123.3 million (75% of total) and international revenue was $41.1 million (25%) in Q1 2026. The Google antitrust litigation and underlying federal ruling are proceeding in the US District Court for the Eastern District of Virginia.

Why: The results confirm that programmatic CTV advertising is now the majority of Magnite's business by contribution ex-TAC, with 30% growth achieved in a quarter free from political advertising activity. The earnings matter for the marketing community because they reflect the pace at which streaming inventory is shifting to programmatic transaction structures, the growing role of retail first-party data in CTV deal packaging, the potential for Google adtech antitrust remedies to alter competitive access to open-web display inventory, and the early commercial shape of agentic AI tools in programmatic buying and selling workflows.

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