Q4 Financial Outperformance and Margin Expansion
Q4 revenue and adjusted EBITDA came in ahead of guidance; Q4 adjusted EBITDA was $27.8 million representing a 35% margin. GAAP net income in Q4 was $6.7 million, or $0.14 per diluted share.
Strong Cash Generation and Capital Returns
Generated $81 million in net operating cash flow in 2025, up 10% year‑over‑year, and $46 million in free cash flow, up 32% year‑over‑year. Ended the quarter with $145.5 million in cash, zero debt, and completed buybacks of 12.4 million shares for $181.1 million with $93.9 million remaining in the repurchase authorization.
Robust AI & Emerging Revenue Growth
Emerging revenues (Activate, commerce media, new AI solutions) nearly doubled year‑over‑year and now represent roughly 10%–12% of total revenues; Q4 emerging revenues grew over 75% year‑over‑year. Nearly 10% of publishers are now deriving revenue from AI solutions.
Agentic AI Traction and Operational Gains
Launched AgenticOS and ran over 250 agentic deals; almost 100 brands/agencies applied to the Agentic AI Accelerator. Early agentic campaigns delivered greater than 5x cost efficiencies. AI reduced campaign setup time by 87% and sped issue resolution by 70%.
CTV and Mobile Outperformance
CTV grew over 50% year‑over‑year for the full year (excluding political) and has a multi‑year compound annual growth rate above 50%. Mobile app business delivered over 25% year‑over‑year revenue growth in Q4 and a 4‑year CAGR of 15%.
Scale, Efficiency and Infrastructure
Processed 337 trillion impressions in 2025, up 28% year‑over‑year. Trailing 12‑month unit costs declined ~20% year‑over‑year. PubMatic owns infrastructure (NVIDIA partnership) enabling AI workloads; over 40% of new code in H2 2025 was written by AI.
Buyer Diversification and Go‑to‑Market Investment
Added 50 new DSP partners last year; mid‑market DSP ad spend rose ~30% year‑over‑year in Q4 (accelerating from 25% in Q3). Buyer‑focused go‑to‑market team headcount grew nearly 20% year‑over‑year.
Regional Momentum
APAC and EMEA grew rapidly in Q4, at over 25% and 15% respectively, helping offset weakness in the Americas.