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The William and Flora Hewlett Foundation is a nonpartisan, private charitable foundation established in 1966 by engineer and entrepreneur William R. Hewlett and his wife, Flora Lamson Hewlett. With an endowment of over $10 billion, the foundation makes grants to organizations around the world in support of its main program areas: Education, Environment, Global Development and Population, Performing Arts, Effective Philanthropy, and Cyber. The foundation aims to solve social and environmental problems, helping people build better lives and supporting institutions that promote a better world.
The headquarters serves as the central hub for the foundation's grantmaking operations, program development, research, and administrative functions across all its focus areas.
The building is known for its environmentally conscious design, having achieved LEED Gold certification. It features open workspaces, abundant natural light, and sustainable materials, reflecting the foundation's commitment to environmental stewardship.
The work culture at the Hewlett Foundation is often described as collaborative, mission-driven, and intellectually stimulating, with a focus on evidence-based philanthropy, thoughtful grantmaking, and long-term impact.
Its location in Silicon Valley, a global center of innovation, provides a unique context, though its philanthropic reach and impact are global. The headquarters is the operational center for one of the largest private foundations in the United States.
The Hewlett Foundation supports organizations and initiatives across the globe, with significant programmatic focus on issues in Sub-Saharan Africa, and a global lens on challenges like climate change, women's economic empowerment, and cyber policy. While its operations are centralized at its Menlo Park headquarters, its grantmaking activities and partnerships extend to numerous countries, addressing complex global problems.
2121 Sand Hill Road
Menlo Park
CA
USA
No additional office locations available.
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As of April 2025, William and Flora Hewlett Foundation' leadership includes:
William and Flora Hewlett Foundation has been backed by several prominent investors over the years, including:
In the past 12 months, the Hewlett Foundation appointed Sara Davis as the new Director of its Effective Philanthropy Program. The foundation's senior leadership team has generally maintained strong continuity.
Discover the tools William and Flora Hewlett Foundation uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
The William and Flora Hewlett Foundation commonly uses the email format of the first initial followed by the last name. For official inquiries, it is recommended to use the contact forms or general inquiry channels provided on their website, unless a specific staff member's email is publicly listed or provided.
[first_initial][last]@hewlett.org
Format
lkramer@hewlett.org
Example
75%
Success rate
Hewlett Foundation • May 16, 2024
The William and Flora Hewlett Foundation announced a new $45 million commitment over three years to support efforts that harness artificial intelligence for the public good and address its potential harms. This initiative aims to ensure AI development is guided by public interest values and benefits society broadly....more
Hewlett Foundation • February 27, 2024
The Hewlett Foundation announced its 2024 cohort of fellows, bringing diverse expertise to support its programs in areas like environment, global development, and cyber. The fellowship program aims to cultivate new talent and perspectives within philanthropy....more
Hewlett Foundation • May 18, 2023
The Hewlett Foundation announced the appointment of Sara Davis as the new director of its Effective Philanthropy Program. Davis, with extensive experience in the field, was set to begin her role in July 2023....more
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