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The Legacy of a Philanthropic Exit: Lessons From the Evaluation of the Hewlett Foundation’s Nuclear Security Initiative

Although time-bound philanthropic initiatives are a well-established practice, there is still much to learn about effective ways to implement, evaluate, and wind down these types of investments. This open-access article describes the NSI evaluation, how the findings informed Hewlett’s philanthropic approach, and provides a case example of a philanthropic-initiative exit. Key considerations for monitoring and evaluation practices particular to the context of a planned exit are discussed.