FCLT's founders include BlackRock, Canada Pension Plan Investment Board (CPPIB), The Dow Chemical Company, McKinsey & Company and Tata Sons.
"Williamson will lead FCLT's transformation from an initiative formed in 2013 by CPPIB and McKinsey & Company to a not-for-profit global organization dedicated to developing practical tools and approaches that encourage long-term behaviors in business and investment decision-making," a release said.
In addition to the Founders, FCLT will involve a number of other member organizations committed to achieving long-term tangible actions that benefit businesses, markets and society more broadly.
Williamson, 52, joins FCLT after over 21 years at Wellington Management Company LLP, where she was most recently a Partner and Director of Alternative Investments.
FCLT is a not-for-profit organisation that aims to develop educational resources and practical solutions that encourage longer-term behaviors in the investment and business worlds to drive long-term value creation and economic growth.