Keyfactor lands $1B+ Summit Partners investment to lead AI and post-quantum trust

Machine identity specialist Keyfactor has announced a $1 billion-plus strategic growth investment led by Summit Partners, in one of the largest cybersecurity growth rounds of 2026 and a clear vote of confidence in the coming post-quantum transition.

Trust infrastructure moves to the boardroom

The Atlanta- and Stockholm-based company said the funding, announced on July 6, 2026, will fuel product innovation, geographic expansion, hiring and strategic acquisitions. Existing investors Insight Partners and Sixth Street Growth will retain significant ownership. Insight Partners was represented by Evercore, while Piper Sandler advised Summit Partners and Qatalyst Partners advised Keyfactor.

"Trust infrastructure has become the foundation that every enterprise, government agency and AI-driven organisation depends on," said Keyfactor CEO Jordan Rackie. "Summit Partners shares our conviction that the opportunity in front of us has never been larger."

Post-quantum, AI agents and shrinking certificate lifespans

Keyfactor pitched the round against a backdrop of four converging pressures: AI-driven identity sprawl, shrinking certificate lifespans, tightening regulation, and the migration to post-quantum cryptography. The White House's June 2026 executive orders order federal systems to migrate off vulnerable public-key algorithms before 2030.

The company says it now issues and manages billions of machine identities each year for more than 2,500 customers, including half of the largest US and European banks, 80% of top US retailers and more than 40% of the Fortune 100. Its Trust Control Plane product line unifies certificate lifecycle automation, cryptographic discovery and signing across cloud, on-premises and hybrid environments.

Board changes and a wider PQC race

Summit Partners managing directors Andy Collins and Colin Mistele will join Keyfactor's board on closing. "The convergence of post-quantum preparation, agentic AI governance, shrinking certificate lifespans, and evolving regulatory expectations is creating an increasingly urgent need for a unified, enterprise-grade platform," Collins said.

The deal lands alongside a busy stretch for quantum-safe security, with SEALSQ and GlobalFoundries partnering on cryogenic PQC silicon and the UK's NCSC releasing an agentic-AI national defence blueprint. It also follows a wave of AI cybersecurity fundraisings led by Exaforce's $125M Series B.

Reporting based on coverage from Keyfactor, Summit Partners, PRNewswire, and The Quantum Insider.