Sarinreach “Rich” Leng is an Operations Analyst at IDEA Fund Partners, bringing a diverse background in entrepreneurship, finance, and international athletics to the firm. He joined IDEA Fund Partners in August 2026, where he focuses on portfolio management, LP relations, and operations across the firm’s funds.

At IDEA Fund Partners, Sarinreach works closely with the investment team to monitor portfolio company performance, support the firm’s co-investment syndicates, and deliver reporting to the firm’s limited partners. He also helps build the systems and tools the firm uses to track its portfolio and run its operations.

Before joining the firm, Sarinreach was a Founding Venture Scout at FindLions and a private equity intern at DEVENCO in Phnom Penh, Cambodia. At an early age, he dabbled in entrepreneurship and later led operations and growth for small consumer brands in the U.S. and Cambodia. Outside of business, Sarinreach has represented Cambodia in tennis since the age of 6, rising to become the country’s top-ranked junior and competing on Cambodia’s national Davis Cup team twice.

Sarinreach earned his bachelor’s degree in Economics from the University of North Carolina at Chapel Hill before completing his Master of Accounting (MAC) at UNC’s Kenan-Flagler Business School. During his time at UNC, he spent nearly three years as manager of the men’s tennis team, supporting the program behind the scenes, before earning a spot on the roster as a walk-on student-athlete. The experience gave him a firsthand view of what it takes to build and sustain a high-performing team, a perspective he now brings to the founders and companies IDEA Fund Partners supports.