Maine · Nonprofit
Group Main Stream Incorporated
Group Main Stream Incorporated (Maine) receives grants from 2 organizations whose IRS filings report $151 to it, the largest being AMAZONSMILE FOUNDATION ($151). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $14M
- Funders on record
- 2
- Grants received
- $151
- Net assets
- $7.2M
What Group Main Stream Incorporated does
Mission
The Agency provides a residential setting to assist adults with developmental disabilities to accomplish and maintain their highest attainable living skills and to improve their quality of life by supporting independence.
As stated on its FY2025 Form 990.
Programs
Provide high quality residential facilities and services for adults with intellectual disabilities.
$3,922,552 spent$4,398,867 earned by the program35% of program spendingProvide consumers with another option from traditional group home settings and independent living that places the individual into a home with a family or supportive roommate.
$6,861,730 spent$8,756,324 earned by the program61% of program spendingProvide case management services for consumers living on their own, with families, or in other staffed settings.
$328,331 spent$302,095 earned by the program3% of program spendingIncluded in other are community support and training programs.
$176,668 spent$239,594 earned by the program2% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $11,289,281.
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 2019 to 2020, from $3.2M to $4.7M (+49%).
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.
Government-grant reliance: 2022 15% · 2023 1%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 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.
Chief executive
Ann-Marie Mayberry
Executive Director
As listed on its FY2025 Form 990.
Who funds it, year by year
2019 → 2023: the base held at 1 funder, grant income rose $0 → $33.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 100% 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 Group Main Stream Incorporated’s funders (the co-funder graph). Top 1 of 2 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.
Where its funders are
100% of Group Main Stream Incorporated'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. Too little is directly attributable to place on a map.
Funder states come from each funder’s own filing. $151 arriving through sponsors registered in 1 state 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.
Organizations like Group Main Stream Incorporated
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 Maine
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
84% of spending goes to programs.
Governance
Public support
45%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for Group Main Stream Incorporated: 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 Group Main Stream Incorporated?
- Group Main Stream Incorporated (Maine) receives grants from 2 organizations whose IRS filings report $151 to it, the largest being AMAZONSMILE FOUNDATION ($151). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does Group Main Stream Incorporated have?
- IRS filings report 2 organizations giving $151 in grants to Group Main Stream Incorporated, 1 of which have funded it in more than one year.
- Who is the largest funder of Group Main Stream Incorporated?
- AMAZONSMILE FOUNDATION is the largest funder on record, with $151 in grants. The full list of funders is on this page.
- How can an organization like Group Main Stream Incorporated find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Maine. 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 Group Main Stream →
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 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