David P. Warren
David Warren is a London-based exchange and bank executive who formerly served as the chief financial officer and interim chief executive at the London Stock Exchange Group. He was appointed chairman of the board at LME Clear, effective July 20, 2023, succeeding Marco Strimer. He has more than 30 years’ experience in financial services.
Warren served as CFO at Nasdaq OMX from 2001 to 2009. He joined Nasdaq in January 2001 as its chief administrative officer. He stepped down from that position in July 2009. Adena Friedman, then Nasdaq's executive vice president of corporate strategy and global data products, took over the position. Warren remained with the company through the end of 2009. Following that, he spent two years as a senior adviser to the CEO of NASDAQ OMX.
Warren joined Nasdaq from the Long Island Power Authority (LIPA), where he was chief financial officer. While there, he led the efforts to raise nearly $7 billion to finance the acquisition of the Long Island Lighting Company. He managed seven separate debt offerings over a five-month period, including a $3.5 billion issue of tax-exempt bonds, the largest single offering ever sold in the municipal market. The Institutional Investor and Euromoney magazine named this issue “Deal of the Year.” 
Before his appointment at LIPA, he served as deputy treasurer of the State of Connecticut.
He holds a Masters of Business Administration degree from the Yale School of Management and a Bachelor of Arts degree from Wesleyan University.
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