EIN 84-3915935

Sozosei Foundation

IRS 501(c) type
501(c)(3)
Num. employees
1
Year formed
2020
Most recent tax filings
2025-12-01
NTEE code, primary
Description
The Sozosei Foundation is a corporate foundation of Otsuka America Pharmaceutical Inc, based in Princeton, NJ. It primarily funds initiatives aimed at decriminalizing mental illness, supporting resilient communities, and promoting disaster philanthropy. Last year, the foundation made 61 grants to various organizations, including Children's Rights Inc.
Total revenues
$294,183
2025
Total expenses
$3,261,440
2025
Total assets
$5,187,427
2025
Num. employees
1
2025

Program areas at Sozosei Foundation

The Sozosei Foundation engaged grey advertising to consider the role of communications in the efforts to decriminalize mental illness. The hypothesis being that in order to increase access to healthcare - the core philanthropic giving strategy of the Foundation - the cultural narrative around criminalization had to shift.
The Sozosei Foundation engaged meeting alliance to provide support to the Sozosei Foundation convenings of Foundation grantees, funder colleagues, subject matter experts from across the us, and others. Convenings support the Foundation's charitable purpose by fostering collaboration, surfacing new ideas, and generally accelerating access to mental healthcare in the us.

Grants made by Sozosei Foundation

GranteeGrant descriptionAmount
Research Foundation for Mental Hygiene (RFMH)Building A Lab for Decriminalizing Mental Illness$215,000
Tulsa Community FoundationGeneral Operating Support for Healthy Minds Policy Initiative$100,000
National Homelessness Law CenterGeneral Operating Support$100,000
...and 13 more grants made

Financials for Sozosei Foundation

RevenuesFYE 12/2025
Total grants, contributions, etc.$0
Investment income and dividends$264,248
Net rental income$0
Net gain from sale of non-inventory assets$0
Gross sales of inventory$0
Miscellaneous revenues$29,935
Total revenues$294,183

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Data update history
August 6, 2026
Posted financials
Added Form 990PF for fiscal year 2025
July 26, 2026
Used new vendors
Identified 2 new vendors, including , and
April 6, 2026
Posted financials
Added Form 990PF for fiscal year 2024
February 15, 2026
Updated personnel
Identified 1 new personnel
February 4, 2026
Used new vendors
Identified 2 new vendors, including , and
Nonprofit Types
Grantmaking organizationsPrivate foundationsPrivate non-operating foundationsCorporate foundationsCharities
Issues
No issues found
Characteristics
Provides grantsPartially liquidatedState / local levelTax deductible donationsAccepts online donations
General information
Address
508 Carnegie Dr
Princeton, NJ 08540
Metro area
Trenton-Princeton, NJ
County
Mercer County, NJ
Website URL
sozoseifoundation.org/ 
Phone
(240) 683-3573
IRS details
EIN
84-3915935
Fiscal year end
December
Taxreturn type
Form 990-PF
Year formed
2020
Eligible to receive tax-deductible contributions (Pub 78)
Yes
Categorization
NTEE code, primary
T21: Corporate foundations
NAICS code, primary
813211: Grantmaking Foundations
Parent/child status
Independent
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