Christopher Greiner
Analyst · William Blair & Company
Thank you, David, and good afternoon, everyone. The theme of our Investor Day in October was durable, predictable and profitable growth, and our third quarter results are a perfect illustration of this. Our revenue growth, excluding political and LiveIntent, accelerated to 28% in Q3 from 27% in Q2 and 26% in Q1, showing the durability of our growth. Our third quarter results once again exceeded our guidance for both revenue and adjusted EBITDA, highlighting the predictability of our growth. And we achieved the highest free cash flow margin in our history, achieving the Rule of 40 on a free cash flow margin basis, demonstrating the profitability of our growth. With that, let's dive into the details of the quarter. In Q3, we delivered revenue of $337 million, up 26% year-over-year or 28% when excluding the contribution from LiveIntent and political candidate revenue in the year ago period. We exceeded the midpoint of our guidance by $9 million or 3 percentage points higher than our forecast, solidly within the 2 to 5 points of cushion we typically leave ourselves. Total scaled customer count grew to 572, up 20% year-over-year and an addition of 5 customers sequentially. We ended the quarter with 180 super-scaled customers, up 25% year-over-year and an addition of 12 customers sequentially. The strong super-scaled customer additions were broad-based across industry verticals and driven by cross-sell of LiveIntent customers and our OneZeta initiative. Scaled customer quarterly ARPU of $579,000 increased 4% year-over-year or 13% when adjusting for political candidate revenue. Super-scaled customer quarterly ARPU of $1.6 million was up 1% year-over-year or 12%, excluding prior year political candidate revenue. From an industry perspective, 7 of our top 10 verticals in the quarter grew faster than 20% year-over-year on a trailing 12-month basis, an improvement from 6 in the first and second quarters. The additional 20% plus growth industry was telecom, where we have had multiple significant wins over the past year and has been a focus of ours this year. It's also worth noting growth in consumer discretionary verticals like retail, travel and hospitality and automotive remained strong in the quarter. And finally, all 3 of the non-20% growth industries were up year-over-year between 7% and 17%. Our direct mix in the third quarter was 75%, consistent with the second quarter and an increase from 70% in the year ago quarter, demonstrating continued success of our agency direct-to-channel adoption. Our GAAP cost of revenue in the quarter was 39.5%, a 13 basis point increase year-over-year and 160 basis points sequentially. The increase in cost of revenue was driven by strong sequential and year-over-year growth in display and video, channels where we continue to see customers investing and which remain highly effective channels for customer acquisition and growth. In the third quarter, we generated $78.1 million of adjusted EBITDA at a margin of 23.2%, 320 basis points higher year-over-year and $7.4 million better than the midpoint of our guidance. This marks the 19th quarter of expanding adjusted EBITDA margins year-over-year. Our GAAP net loss for the third quarter was $3.6 million, an improvement from a loss of $17.4 million in the third quarter of 2024. There were $6.5 million of acquisition-related expenses in the third quarter, which absent these costs, we would have been GAAP profitable. Third quarter net cash provided by operating activities was $57.9 million, up 68% year-over-year with free cash flow of $47.1 million, up 83% year-over-year and representing a margin of 14%. This represents a free cash flow conversion of 60%, a significant improvement from 48% in the third quarter of 2024 and 57% in the second quarter of 2025. This also includes a roughly 18-point working capital headwind driven by longer agency payment cycles. The improvement in both adjusted EBITDA margin and free cash flow conversion in the third quarter exhibit the strong operating leverage of our model and put us firmly on track to achieve our Investor Day targets of a 30% plus adjusted EBITDA margin and greater than 70% free cash flow conversion in 2030. During the third quarter, we repurchased 1.7 million shares for $28 million and have repurchased 6 million shares for $85 million year-to-date. We also continue to make significant progress in reducing dilution and stock-based compensation expense. Just like the second quarter, in the third quarter, we had 0 net dilution and year-to-date, our dilution is 1.6% as of September 30. We remain on track to achieve both our 4% to 6% normal course dilution target in 2025 and our $190 million equity compensation expense target even when factoring in the equity we anticipate issuing for the Marigold acquisition. Before diving into our updated fourth quarter and 2025 guidance, I want to reiterate what I said on the recent Marigold acquisition call regarding forward-looking estimates. Given there could be variability in the close date, which we continue to anticipate will happen in the fourth quarter of 2025, we have not included any Marigold-related contributions in our 2025 guidance and continue to guide analysts to not yet include Marigold in their 2025 or 2026 estimates until the transaction closes. Upon closing, we will provide guidance on Marigold's contribution for 2025 and 2026. We want to make sure that consensus estimates do not become a mixed bag of organic and acquisition-related revenue. As we have done with prior acquisitions, we plan to clearly break out the organic versus acquired revenue for the first year post transaction upon announcement of closing. With that in mind, we're raising fourth quarter and full year revenue, adjusted EBITDA and free cash flow guidance. Details can be found starting on Slide 16 of our earnings supplemental. For the full year 2025, we are increasing the midpoint of our revenue guidance by $11 million to $1.275 billion, representing a 26% year-over-year growth when excluding political and LiveIntent, which is 5 points higher than our starting point for the year at 21%. For the fourth quarter, we now expect revenue of $364.5 million at the midpoint, $2 million higher than our previous guidance and representing year-over-year growth of 16% or 23% when excluding political candidate and LiveIntent revenue, which is consistent with our Zeta 2028 plan to grow 20% or greater organically. For adjusted EBITDA, we're increasing the midpoint of our 2025 guidance to $273.7 million, up $9 million from our prior guidance and representing a year-over-year increase of 42% at a margin of 21.5%, an improvement of 230 basis points over 2024. For the fourth quarter of 2025, we now expect adjusted EBITDA of $90 million at the midpoint, up from our previous expectation of $88.4 million and representing growth of 28% and a margin of 24.7%. We are also increasing the midpoint of our 2025 free cash flow guidance to $157.4 million, up $15 million from the midpoint of our previous guidance and representing year-over-year growth of 71% and a conversion of 57% of adjusted EBITDA. This conversion is up 10 points from 2024. For context, since our initial 2025 guidance back in February, we have increased revenue by $35 million and free cash flow by $28 million. Now let me transition to looking beyond 2025 and setting our initial organic guidance for 2026. While providing out-year guidance in Q3 is not intended to become standard practice, we're doing so this year because we want to establish a clean organic baseline for 2026 before Marigold is incorporated into our guidance. At our recent Investor Day, we spent time demonstrating our track record of 5 straight years of at least 20% revenue growth and free cash flow margin expansion. The punchline is, we see another year ahead of us with each at substantially higher scale. In terms of revenue, we're guiding 2026 to be $1.54 billion or 21% growth on 2025 guidance of $1.275 billion. Importantly, this is an organic-only view and does not include Marigold. Our guidance assumes $15 million of political candidate revenue, which we would expect to evolve and is 2x what the midterms were in 2022. We expect $354 million of adjusted EBITDA in 2026 or a 23% margin, up 150 basis points year-to-year. We see an initial view of 59% free cash flow conversion, yielding $209 million in free cash flow at a margin of 14%. And lastly, we continue to plan for a guidance model with 2% to 5% top line buffer. From a seasonality perspective, we expect revenue in the first quarter to be $314.5 million, up 19% year-to-year and accounting for roughly the same percentage of full year revenue in the first quarter as 2025 and with an adjusted EBITDA margin of 17.8%. I'll conclude where I began. Our third quarter results, updated 2025 guidance and initial outlook for 2026 underscore the durability, predictability and profitability of our growth and reflect the confidence and momentum we have in the business. Now let me hand the call back over to the operator for David and myself to take your questions. Operator?