K1x operates a patented, AI-native platform that automates extraction, validation, aggregation, and distribution of tax data from K-1s, K-3s, 1099s and supports IRS-certified 990 e-filings. The platform is vendor-neutral and is designed to replace manual, fragmented workflows with a unified, intelligence-driven tax data operations layer for private markets. K1x serves a broad customer base, trusted by more than 40,000 organizations, including 44 of the 100 largest U.S. institutional investors, 20 of the top 25 accounting firms, 45 of the largest university endowments, 11 leading private foundations, and seven major health systems. The company plans to use recent growth capital to accelerate product development and applied machine learning and generative AI, deepen platform functionality and accuracy, and bolster customer support and operations. Following the $175 million growth investment led by Sumeru Equity Partners, Sumeru will become the company’s majority shareholder while Edison Partners remains an ongoing investor.

Total raised

$210M

Funding rounds

3

Latest round

Equity

Latest activity

Apr 2026