Jonathan Rosenbaum

Jonathan Rosenbaum is a Managing Partner at Simon Equity Partners, a California-based private equity firm and family investment office that makes growth-capital investments in early- and expansion-stage consumer companies. At the firm he directs investments in the consumer, real estate and technology areas. The firm was founded by Stephen Simon (its founding/managing member), and operates with a small partner team.

Before Simon Equity Partners, Rosenbaum served in a comparable investing capacity at Raycliff Investments (a family-office/private-equity vehicle) from roughly 2006 to 2015. Prior to moving into private equity, he held a series of executive finance and corporate-development roles in the technology and media industries — most notably as a senior finance executive at PRN, then the largest U.S. out-of-home (in-store) television media network, through its sale to Thomson SA. Earlier he held similar finance roles at GE/NBC's online arm, NBC Internet (NBCi), as well as at other technology startups.

Rosenbaum began his career in the business assurance / audit practice at Ernst & Young LLP, working in the firm's technology, communications and media group. He holds an undergraduate degree from the University of California, Santa Barbara (attended circa 1991–1994).

Note: Several professional-data aggregators (Equilar, RocketReach, The Org, D&B) also list a Jonathan Rosenbaum as Chief Financial Officer of Unagi (the consumer electric-scooter company) and reference Raycliff and SynapticMash; these profiles appear to describe the same individual given the overlapping consumer-finance career, but this dual role could not be confirmed from a primary source and should be treated as reported, not verified.

• Invests in consumer and retail businesses, spanning CPG/consumer goods, retail brands and consumer-facing technology.
• Targets early- to expansion-stage companies — the firm's disclosed activity includes Seed (avg. ~$2.9M), Series A (avg. ~$6.4M) and later Series B/growth rounds, plus occasional leveraged buyouts.
• Check size of roughly $2M–$10M, typically into companies with $5M–$20M in revenue, often as a minority investor (CB Insights).
• Operates with a family-office orientation, which can mean patient, flexible capital rather than fund-cycle-driven timelines.
• Says "yes" to proven consumer demand and real revenue traction — the revenue-band targeting suggests a preference for companies past pure concept stage with demonstrable product-market fit.