Massachusetts · Nonprofit
PROPRIETORS OF THE BOSTON ATHENAEUM
PROPRIETORS OF THE BOSTON ATHENAEUM (Massachusetts) receives grants from 95 organizations whose IRS filings report $10,839,012 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($3,164,802). 52 of them have funded it in more than one year.
- Revenue FY2025
- $9.7M
- Funders on record
- 95
- Grants received
- $11M
- Net assets
- $120M
What Proprietors of the Boston Athenaeum does
Mission
The mission of the boston athenaeum is to engage all who seek knowledge by making accessible our library's collections and spaces, thereby inspiring reflection, discourse, creative expression, and joy.
As stated on its FY2025 Form 990.
Programs
Library services - see schedule o.library services - the library is the largest programmatic activity of the boston athenaeum, serving approximately 5,000 members, their families, the scholarly community, students, and other members of the public. It is composed of two principal departments: reader services and technical services. Reader services at the boston athenaeum comprises the public departments that offer library services. The head of reader services and the archivist/reference librarian work at the reference desk; they answer hundreds of members and researchers' questions and assist in the use of circulating materials, special collections, electronic resources, and online research. Thousands of rare materials are provided for the 200-300 researchers who use the special collections reading room every year. The head of circulation and the reader services assistant manage activity at the circulation desk, where roughly 18,000 items circulate each year. Five interns assist at circulation and reference. The children's librarian helps younger members use the children's library, and offers programs including story hours and reading groups, designed specifically for children.…
$4,468,659 spentof which $12,000 as grants$1,875,781 earned by the program42% of program spendingSpecial collections - see schedule o.special collections - the special collections department is composed of the curators who oversee the acquisition, maintenance, and exhibition of rare books, archival documents, manuscripts, maps, and works of art. Department staff members include the curator of rare books and manuscripts, the curator of paintings and sculpture, the associate curator of paintings and sculpture, the archivist, and the curator of prints and photographs. The curators research objects in the collections and disseminate information about them to the scholarly community at large and to the public through lectures, publications, and (in cooperation with libraries, archives, and museums around the country) an active loan program. Each year, on site, the curators assist hundreds of athenaeum members and visiting scholars in researching the athenaeum's collections. The curatorial staff mounts two or three exhibitions per year covering a range of historical and contemporary subjects. These exhibitions are accompanied by gallery talks, lectures, and symposia, all of which are open to the public.
$4,108,191 spent39% of program spendingLectures & concerts - see schedule o.lectures & concerts - the lectures and concerts program includes approximately 100 events each year, such as author talks, lectures, concerts, children's events, exhibition receptions and movies. Events take place both in the evening and during the day and include events that are open to the general public as well as events for athenaeum members.
$1,400,712 spent$61,284 earned by the program13% of program spendingConservation - since 1963, the conservation laboratory has been dedicated to the long-term preservation of the athenaeum's holdings with inherent historic artistic or literary value. The conservation department includes the chief conservator and the associate conservator, and several interns and fellows. Athenaeum conservators perform conservation treatments on rare and circulating books, maps, manuscripts, prints, architectural drawings, broadsides, and pamphlets, and follow preventive conservation protocols.digital programs - the digital programs department is dedicated to the enhancement of scholarly access to the collections through digitization. The head of digital programs and two interns scan collection materials in the imaging studio and create online recordscontaining digital surrogates with their corresponding metadata. These efforts ensure that athenaeum collections are available freely online to scholars, researchers, students, and to anyone in the world with an internet connection.
$658,637 spent$242,052 earned by the program6% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $10,636,199.
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. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $130M to $108M (−17%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
42% of PROPRIETORS OF THE BOSTON ATHENAEUM’s revenue is contributions — about as donation-reliant as the typical peer (48% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 5 of the last 9 reported years ran a deficit.
reserve
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.
Who funds it, year by year
2017 → 2023: the base broadened from 25 funders to 39 funders, grant income rose $337k → $1.3M.
11 of 95 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 45% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
Left out of every figure on this page: $448k from one payer (the payer shares this organization's board, largest The Boston Library Society). These are real filings, and they are not money PROPRIETORS OF THE BOSTON ATHENAEUM raised.
From the IRS filings of PROPRIETORS OF THE BOSTON ATHENAEUM’s funders (the co-funder graph). Top 30 of 95 funders by total. 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
PROPRIETORS OF THE BOSTON ATHENAEUM leans on a few funders — its largest provides 29% of grant income and the top three 62%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
70% 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 PROPRIETORS OF THE BOSTON ATHENAEUM.
Largest funder’s share by year: 2017 74% · 2018 25% · 2019 49% · 2020 30% · 2021 29% · 2022 71% · 2023 31% — diversifying over time.
“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.
How long its funders stay
54% of PROPRIETORS OF THE BOSTON ATHENAEUM's funders are still giving 3 years after their first grant; 55% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
75% of PROPRIETORS OF THE BOSTON ATHENAEUM's grant income comes from Massachusetts funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $4.8M arriving through sponsors registered in 9 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. 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.
Against its field
PROPRIETORS OF THE BOSTON ATHENAEUM is better cushioned than half of the 9,615 education nonprofits its size.
this organization peer median middle 50% of peers· 9,615 education nonprofits $1M–$10M, FY2025
Government funding PROPRIETORS OF THE BOSTON ATHENAEUM receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $305k on record.
- National Endowment for the Humanities$183k
- Institute of Museum and Library Services$123k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like PROPRIETORS OF THE BOSTON ATHENAEUM
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 Massachusetts
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
81% of spending goes to programs.
Governance
Public support
56%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Part of a family of 2 related entities
- The Boston Library Society · exempt
- Charitable Remainder Trust · corp_trust
Screen this organization
A dated, signed PDF of the compliance screen for PROPRIETORS OF THE BOSTON ATHENAEUM: 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 PROPRIETORS OF THE BOSTON ATHENAEUM?
- PROPRIETORS OF THE BOSTON ATHENAEUM (Massachusetts) receives grants from 95 organizations whose IRS filings report $10,839,012 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($3,164,802). 52 of them have funded it in more than one year.
- How many funders does PROPRIETORS OF THE BOSTON ATHENAEUM have?
- IRS filings report 95 organizations giving $10,839,012 in grants to PROPRIETORS OF THE BOSTON ATHENAEUM, 52 of which have funded it in more than one year.
- Who is the largest funder of PROPRIETORS OF THE BOSTON ATHENAEUM?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $3,164,802 in grants. The full list of funders is on this page.
- How can an organization like PROPRIETORS OF THE BOSTON ATHENAEUM find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Massachusetts. 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 FY2025 (financials across 2017–2025), and the filings of 95 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 22, 2026. What this page cannot tell you · view filing