Joan Grubb Sanna

The 21 Fund is group supporting the next generation of Stanford Graduate School of Business (GSB) startups. "The Fund" offers ongoing support to our entrepreneurs and fosters lifelong relationships within the class of 2021. Our mission is to be the most hands-on and value-add partner to every GSB ‘21 founder. We leverage the strength and breadth of experience of our class through a network of 230+ individuals from the class of 2021 and a dedicated Platform Team for portfolio support. Follow us on Twitter at @21_fund.

The GSB Impact Fund is an evergreen fund that invests in early-stage for-profit ventures seeking both financial and social and environmental returns.

Oak Street Health is a network of value-based primary care centers serving older adults on Medicare. Since 2012, we’ve been rebuilding healthcare to focus on personalized preventive care. Our value-based care model enables doctors to spend more time on what matters most: building meaningful relationships with patients. Each provider works closely with a care team that includes social workers, mental health professionals, and others to support every part of a patient’s health. Now part of CVS Health®, Oak Street Health is expanding access to high-quality primary care in the communities that need it most. We currently operate more than 230 centers across 27 states and are the only primary care provider to carry the AARP name. Learn more at oakstreethealth.com.

The 21 Fund is group supporting the next generation of Stanford Graduate School of Business (GSB) startups. "The Fund" offers ongoing support to our entrepreneurs and fosters lifelong relationships within the class of 2021. Our mission is to be the most hands-on and value-add partner to every GSB ‘21 founder. We leverage the strength and breadth of experience of our class through a network of 230+ individuals from the class of 2021 and a dedicated Platform Team for portfolio support. Follow us on Twitter at @21_fund.

The GSB Impact Fund is an evergreen fund that invests in early-stage for-profit ventures seeking both financial and social and environmental returns.

General Atlantic is a leading global investor with more than four and a half decades of experience providing capital and strategic support to over 830 companies throughout its history. Established in 1980, General Atlantic continues to be a dedicated partner to visionary founders and investors seeking to build dynamic businesses and create long-term value. The firm leverages its patient capital, operational expertise, and global platform to support a diversified investment platform spanning Growth Equity, Credit, Climate, and Sustainable Infrastructure strategies. General Atlantic manages approximately $108 billion in assets under management, inclusive of all strategies, as of March 31, 2025, with more than 900 professionals in 20 countries across five regions. For more information on General Atlantic, please visit: www.generalatlantic.com.

PJT Partners is a premier, global, advisory-focused investment bank that was built from the ground up to be different. Our highly experienced, collaborative teams provide independent advice coupled with old-world, high-touch client service. This ethos has allowed us to attract some of the very best talent in the markets in which we operate. We deliver leading advice to many of the world’s most consequential companies, affect some of the most transformative transactions and restructurings and raise billions of dollars of capital around the globe to support startups and more established companies. If you would like to learn more about PJT and are interested in reimagining the craft and culture of strategic advice, visit pjtpartners.com.