Founded in 2020 by former leaders of Braintree and PayPal, Primer offers a single platform that spans a merchant’s entire payments lifecycle from checkout to payout. The platform captures over 400 data points per transaction and manages more than 95% of customer payment volume on average, processing billions of transactions annually for customers including GetYourGuide, Dialpad, and Printful. Primer says that completeness of data enables AI-driven decisioning and has released a proprietary AI agent, Primer Companion (released in 2025), which is being expanded from an insights tool to one that can run experiments, optimize performance, and operate autonomously within merchant-defined parameters. The company reports that the U.S. represents around a fifth of revenue with ARR doubling year-on-year and plans to grow U.S. revenue to more than a third of total revenue by 2028, supported by planned hires. Primer has raised a total of $170 million from investors including Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, Balderton, and Speedinvest.

Total raised

$174M

Funding rounds

6

Latest round

Series C

Latest activity

May 2026