North Carolina · Nonprofit
Esperantic Studies Foundation
Esperantic Studies Foundation (North Carolina) receives grants from 2 organizations whose IRS filings report $16,400 to it, the largest being Esperanto League for North America Inc ($14,400). 0 of them have funded it in more than one year.
- Revenue FY2024
- $233k
- Funders on record
- 2
- Grants received
- $16k
- Net assets
- $4.1M
What Esperantic Studies Foundation does
Program
NASK, the North American Summer Esperanto Workshop, is the Premier Esperanto language learning workshop in the USA. It has been held annually since 1969. The Workshop is made possible by the subsidy provided by ESF. ESF organizes it, finds the teachers and location, advertises it to prospective students and pays the bills and teachers. The students do pay to attend but the amount collected does not cover the total cost, so ESF subsides the event each year to assure that it takes place.
$64,123 spent
The program described on its FY2025 Form 990-PF.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2020 to 2021, from $3.6M to $4.2M (+16%).
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Charles Mays
Executive Director
As listed on its FY2025 Form 990-PF.
Who funds it, year by year
Grant support over time, funder by funder — shade shows the grant size each year.
From the IRS filings of Esperantic Studies Foundation’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
Esperantic Studies Foundation leans on a few funders — its largest provides 88% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
88% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund Esperantic Studies Foundation.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
Esperantic Studies Foundation draws 100% of its grant income from funders outside North Carolina, across 2 states in all.
Funder states come from each funder’s own filing. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like Esperantic Studies Foundation
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In North Carolina
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Screen this organization
A dated, signed PDF of the compliance screen for Esperantic Studies Foundation: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds Esperantic Studies Foundation?
- Esperantic Studies Foundation (North Carolina) receives grants from 2 organizations whose IRS filings report $16,400 to it, the largest being Esperanto League for North America Inc ($14,400). 0 of them have funded it in more than one year.
- How many funders does Esperantic Studies Foundation have?
- IRS filings report 2 organizations giving $16,400 in grants to Esperantic Studies Foundation.
- Who is the largest funder of Esperantic Studies Foundation?
- Esperanto League for North America Inc is the largest funder on record, with $14,400 in grants. The full list of funders is on this page.
- How can an organization like Esperantic Studies Foundation find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in North Carolina. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 2 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing