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Thomas O’Neill Headshot

Thomas O'Neill

Senior Advisor

Thomas O’Neill is a Senior Advisor with Teneo, based in New York. Tom is an investment banking industry pioneer with over four decades of unmatched experience serving the needs of banks and other financial institutions.

Prior to Teneo, Tom was Vice Chairman at Incapital, advising the firm’s capital markets group and financial institutions group on all aspects of their businesses. He is the co-founder of investment banking and brokerage firm Sandler O’Neill & Partners, where he spent 22 years advising bank and thrift clients on strategic transactions and financings.

Tom began his Wall Street career at L.F. Rothschild & Co. in 1972, where he specialized in working with financial institutions. In 1984, he was appointed Managing Director of Rothschild’s Bank Service Group. Tom joined the late Herman Sandler in Bear Stearns’ Financial Services Group in 1985, and served as a Managing Director and Co-Manager of the Group until co-founding Sandler O’Neill in 1988. Most recently, he was the co-chief executive officer of The Kimberlite Group, which he co-founded in 2013. Tom currently serves on the board of Bank Financial, a bank holding company based in Chicago.