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Connecticut · Nonprofit

Great Mountain Forest Corporation

Great Mountain Forest Corporation (Connecticut) receives grants from 27 organizations whose IRS filings report $4,227,349 to it, the largest being BERKSHIRE TACONIC COMMUNITY FOUNDATION INC ($3,529,090). 19 of them have funded it in more than one year, and 90% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.

Revenue FY2025
$964k
Funders on record
27
Grants received
$4.2M
Net assets
$13M
19/27 repeat fundersgrants exceed reported revenue in one year
01What it does

What Great Mountain Forest Corporation does

Programs

  1. Management of forest and wildlife resources on foundation-owned property according to a forest stewardship plan approved by the State of Connecticut and the USDA Forest Service.

    $545,500 spent
  2. Maintenance and upkeep of Yale Forestry Camp, and outreach through the hosting of researchers investigating the ecology of the forest.

    $33,264 spent
  3. GMF Internship Program - seven interns were employed during the year ended June 30, 2025.

    $39,055 spent

The 3 programs described on its FY2024 Form 990-PF.

02The organization over time

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.

100 = 20172017 Revenue 100 ($467k) Expenses 100 ($556k) Net assets 100 ($9.2M)2018 Revenue 128 ($599k) Expenses 90 ($502k) Net assets 101 ($9.3M)2019 Revenue 837 ($3.9M) Expenses 97 ($542k) Net assets 138 ($13M)2020 Revenue 115 ($535k) Expenses 111 ($618k) Net assets 137 ($13M)2021 Revenue 172 ($803k) Expenses 113 ($629k) Net assets 139 ($13M)2022 Revenue 195 ($913k) Expenses 131 ($726k) Net assets 141 ($13M)2023 Revenue 159 ($742k) Expenses 107 ($595k) Net assets 142 ($13M)2024 Revenue 201 ($939k) Expenses 139 ($773k) Net assets 144 ($13M)2025 Revenue 206 ($964k) Expenses 153 ($852k) Net assets 145 ($13M)
'17'18'19'20'21'22'23'24'25
Revenue (206)Expenses (153)Net assets (145)Peer revenue range

Balance sheet

Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2018 to 2019, from $9.8M to $13M (+29%).

$9.2M
$9.8M
$13M
$13M
$13M
$13M
$13M
$13M
$13M
'17'18'19'20'21'22'23'24'25
Total assetsTotal liabilities

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.

The chief executive listed changed between the FY2023 and FY2024 filings.

'17'18'19'20'21'22'23'24'25
Listed111516161518151618
Joined·+4+1+2+0+8+4+5+5
No longer listed·00215743
03Who funds it

Who funds it, year by year

2017 → 2023: the base broadened from 5 funders to 14 funders, grant income rose $43k → $1.1M.

8 of 27 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 90% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.

From the IRS filings of Great Mountain Forest Corporation’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

Great Mountain Forest Corporation leans on a few funders — its largest provides 83% of grant income and the top three 92%; half comes from just 1 funder.

the vertical line marks half of all grant income — 1 funder to its left

90% 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 Great Mountain Forest Corporation.

83%
largest funder
92%
top three
~1
effective funders

Largest funder’s share by year: 2017 58% · 2018 72% · 2019 76% · 2020 30% · 2021 82% · 2022 94% · 2023 90% — growing more concentrated.

“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

69% of Great Mountain Forest Corporation's funders are still giving 3 years after their first grant; 70% give in more than one year at all.

first grant+1y+2y+3y+4y+5y+6y

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

90% of Great Mountain Forest Corporation's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $433k that is directly attributable, 76% of it comes from Connecticut funders.

ME
NY
IN
PA
NJ
CT
DE
TN
DC
TX
FL

In-state vs out-of-state, by year

’17
’18
’19
’20
’21
’22
’23
Connecticut out of state home

Funder states come from each funder’s own filing. $3.8M arriving through sponsors registered in 5 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.

04Its place in the field

Against its field

Great Mountain Forest Corporation has grown faster than half of the 4,237 philanthropy nonprofits its size.

Months of reserve4.6mo · below the median
Revenue growth (annualized)9% · above the median

this organization peer median middle 50% of peers· 4,237 philanthropy nonprofits $100k–$1M, FY2025

Government funding Great Mountain Forest Corporation receives

Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $2k on record.

State$2k
22
25
Top programs
  • Educ & Training For Employees$1k
  • Training Costs Non-Employees$900

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 Great Mountain Forest Corporation

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 Connecticut

Nationally

05Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Screen this organization

A dated, signed PDF of the compliance screen for Great Mountain Forest Corporation: 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.

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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 Great Mountain Forest Corporation?
Great Mountain Forest Corporation (Connecticut) receives grants from 27 organizations whose IRS filings report $4,227,349 to it, the largest being BERKSHIRE TACONIC COMMUNITY FOUNDATION INC ($3,529,090). 19 of them have funded it in more than one year, and 90% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
How many funders does Great Mountain Forest Corporation have?
IRS filings report 27 organizations giving $4,227,349 in grants to Great Mountain Forest Corporation, 19 of which have funded it in more than one year.
Who is the largest funder of Great Mountain Forest Corporation?
BERKSHIRE TACONIC COMMUNITY FOUNDATION INC is the largest funder on record, with $3,529,090 in grants. The full list of funders is on this page.
How can an organization like Great Mountain Forest Corporation find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in Connecticut. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

Play a game about who funds Great Mountain Forest →

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 27 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