Primer raises $100m in a Series C round led by Sofina to fund US expansion and AI development.
The oversubscribed Series C round was led by Sofina and brings the company's total funding to $170m.
≈ £74.4M at $1 = £0.7444 on 20 May 2026
Primer provides a unified infrastructure layer for global enterprise payments, helping merchants manage transactions across multiple processors and tools.
London-based payments infrastructure firm Primer has secured $100m in an oversubscribed Series C funding round led by Sofina. The transaction brings the total capital raised by the company to $170m. Peak XV Partners joined the round alongside returning investors Balderton, Accel, ICONIQ, Tencent, and Speedinvest.
The fresh capital will be deployed to drive growth in the US market, where the company aims to increase revenue share significantly by 2028, and to expand its AI agent Primer Companion. Founded in 2020, Primer provides an orchestration layer that sits above traditional processors to help large merchants manage transaction flows and data.
From the founder
"In the next few years, every payment decision in a large business will be initiated, optimised or audited by AI. That shift is already underway"
Gabriel Le Roux
Co-founder and CEO at Primer
Investor perspective
"Gabriel and the team have spent the past six years building the platform best suited to that future, earning the trust of some of the world’s most demanding merchants"
Jean-François Burguet
Head of Digital, Sofina
Use of funds
- 01Expand into international markets
- 02Continue product development
