Sozosei Foundation
Official website of the Sozosei Foundation, a private U.S. foundation based in Princeton, NJ (EIN 84-3915935) established by Otsuka. The site describes the foundation’s mission to decriminalize mental illness and includes program areas, grantee partners, news and resources.
Source: Website · Mar 2026
Ideal Applicant
Organizations focused on decriminalizing mental illness or related policy, research, legal advocacy, systems change, or media projects with capacity to operate at the state or national scale.
Good Fit
- • Explicit mission alignment with decriminalizing mental illness or related policy/advocacy work.
- • Proposals for research, litigation, policy enforcement, pilot diversion programs, or national/state strategy development.
- • Capacity to manage grants in the typical observed range (many grants clustered between roughly $50K and $250K; 2024 median about $100K).
- • Willingness to operate or scale work across states rather than only one hyper-local project.
Geography
Observed grants in the latest year went to organizations in 17 states and the foundation directs most dollars out of state (in-state share under 10%), indicating a multi-state/national footprint.
Recipient Variety
The latest year shows 33 distinct recipients (34 grants) with a high new-recipient rate (24 new grantees in 2024) and historically dozens of separate grantees, demonstrating a broad and diverse recipient set.
New Applicants
Direct evidence of openness includes a public application section on the website, a listed grants email/phone/address, and a high share of new grantees in 2024 (about three quarters of recipients were new), so unfamiliar applicants appear plausibly able to join the portfolio.
Source: Zeffy Agent · Mar 2026
