21/64 is an independent nonprofit practice providing multigenerational advising, facilitation and training for next generation engagement, especially within family philanthropy and other family enterprises. We specialize in serving families with funds, foundations or other family enterprises as well as wealth and philanthropy advisors—so that multiple generations can work, give, and serve together more effectively.
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21/64 Questions
The 21/64 annual revenue was $4 million in 2026.
Danielle York is the Executive Director of 21/64.
8 people are employed at 21/64.
21/64 is based in New York, New York.
The NAICS codes for 21/64 are [6116, 61, 611, 61169].
The SIC codes for 21/64 are [829, 82].
Top 21/64 Employees
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Danielle York
Executive Director at 21/64
Boston, MA, US22 -
24
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Rich Polt
Director of Training and Engagement at 21/64
Baltimore, MD, US33 -
Andine Sutarjadi
Senior Director at 21/64
New York, NY, US25+ -
Robyn Schein
Senior Director at 21/64
Minneapolis, MN, US23 -
Sam Grimmke
Program and Systems Manager at 21/64
Boston, MA, US24 -
Erin Trottier
Director of Finance and Administration at 21/64
Marshfield, MA, US23
