STEMATCH INC
WELLESLEY HLS, MA. EIN 82-0950918. Reported $608,691 of revenue for 2025 on its Form 990-PF.
American Factbook Research
The IRS record
- 82-0950918
- Employer Identification Number
- The identifier the IRS uses for this organization.
- 501(c)(3) — charitable, religious, educational, scientific
- Recognised under
- The subsection of the code its exemption was granted under.
- 2017
- Recognised in
- The year of the IRS ruling.
- Education
- Classification
- NTEE code B92, assigned at registration.
- Contributions are deductible
- Gifts to it
- Whether the IRS treats a contribution to this organization as deductible.
- Corporation
- Legal form
- How the organization is constituted, as recorded at registration.
- WELLESLEY HLS, MA
- Location of record
- The address the IRS holds, not necessarily where it operates.
- Form 990-PF
- Most recent filing
- For tax year 2025.
What it reported for 2025
- $608,691
- Total revenue
- Contributions, grants, program service revenue and investment income.
- $583,384
- Total expenses
- As reported on the return.
- $110,590
- Total assets, book value
- At the end of the year, at what the organization paid for them.
- $110,590
- Total assets, fair market value
- What they are worth now. Only a Form 990-PF reports this.
- 5
- People listed
- Officers, directors, trustees, key employees and highest-paid employees.
- $216,416
- Largest reported compensation
- Reported for CHRISTOPHER Z ZANNETOS.
A private foundation reports its assets twice. Book value is what it paid for them; fair market value is what they are worth now, and it is usually the larger of the two. Rankings on this site use book value, because that is the only measure a Form 990 and a Form 990-EZ also report, which keeps a foundation comparable with the charities beside it.
STEMATCH INC reported paying CHRISTOPHER Z ZANNETOS, PresidentDirector, $216,416 for 2025. That is reportable compensation from the organization, from related organizations, and other compensation, as the organization reported all three. It is not a verified salary and not take-home pay.
Similar organizations
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|---|---|
| PRESIDENT AND FELLOWS OF HARVARD COLLEGE | $8,323,235,933 |
| MASSACHUSETTS INSTITUTE OF TECHNOLOGY | $6,737,799,000 |
| NORTHEASTERN UNIVERSITY | $2,586,227,003 |
| HARVARD MANAGEMENT PRIVATE EQUITY CORPORATION | $1,996,568,563 |
| BOSTON COLLEGE TRUSTEES | $1,838,532,376 |
| TRUSTEES OF TUFTS COLLEGE | $1,339,090,449 |
This organization elsewhere
- IRS Tax Exempt Organization Search — the exemption record this page is built from. Search for EIN 82-0950918; the IRS search has no address that opens one organization directly.
- ProPublica Nonprofit Explorer — the same filings with scanned returns going back further. Reporting by ProPublica.
More in Massachusetts and under Education. All organizations: nonprofits.
What this page cannot show
- Everything here is what the organization told the IRS about itself. The IRS publishes returns as filed and does not audit them first.
- The figures describe the most recent year on record, which is usually one to two years behind, and not the organization’s current position.
- Nothing here says whether the organization does its work well, or how it spends what it raises beyond the totals on the form.
Something wrong? Tell us. Full method at methodology.
Sources
- Exempt Organizations Business Master File — Internal Revenue Service · U.S. Government work, public domain (17 U.S.C. 105) · retrieved September 21, 2026
- Form 990 series e-file data · retrieved September 19, 2026
Data retrieved