Ian Sigalow

Ian Sigalow co-founded Greycroft in 2006 and serves as its Managing Partner in New York, where he helps guide the firm’s operations, investment strategy, and long-term vision.

At Greycroft, Ian has invested in high-growth companies across the digital economy, with a focus in recent years on the AI frontier. His current portfolio includes Fetch, Flutterwave, HealthVerity, Hidden Road, Hippocratic AI, Landing, Newton Research, Pie Insurance, Public.com, Reflexivity, and Sequen AI.

Over the past twenty years, Ian has led investments in category-defining businesses that scaled to acquisition or IPO, including Venmo, Braintree, Shipt, Buddy Media, Plated, Bright Health Group, WorkFusion, Extreme Reach, and Data Plus Math.

Prior to Greycroft, Ian founded StrongData, a payment encryption startup focused on card-not-present fraud. He began his career in venture capital at Boston Millennia Partners.

Ian holds a Bachelor of Science from MIT and an MBA from Columbia Business School, where he is a frequent guest lecturer.