Sanford Weill – Startup Investor Profile

Sanford Weill serves as President of the Board of Trustees at Carnegie Hall Corporation, an Angel investor. His investment focus areas include personal money into promising companies, typically in exchange for equity. He is active in the early stage of investments. He has a geographical preference for the United States and has made significant real estate investments in Sonoma County, California. Previous investments and ventures include founding Citigroup, Shearson Loeb Rhoads, and Travelers Group. Sandy Weill is known for building Citigroup into one of the world’s largest financial services companies and has been involved in notable philanthropic efforts such as the Weill Neurohub. His partnership and collaboration styles promote collaboration between neuroscientists, engineers, and computer scientists.

Location: Sonoma, CA

Country: United States of America

Investment Regions: EU, NA

Investment Stages: pre-seed, seed

Website:

AI Reasoning: Searches found no recent public reports of Sanford Weill making an angel or startup investment within the last 12 months. The most recent concrete activity found is charitable/philanthropic pledges in 2025, but not startup investments. A notable past investment was in a financial services company he founded and built, Citigroup (not a startup investment). Given lack of evidence of an investment within 12 months prior to the reference date, classify as low-active (last known investment >12 months ago).

Low Activity – Only known angel investments more than 12 months ago.

Active – Known angel investments between the last 12 and 6 months.

Very Active – Known angel investments in the last 6 months.