Massachusetts · Nonprofit
PARKINSON STUDY GROUP INC
PARKINSON STUDY GROUP INC (Massachusetts) receives grants from 2 organizations whose IRS filings report $562,500 to it, the largest being PARKINSON'S FOUNDATION INC ($542,500). 2 of them have funded it in more than one year.
- Revenue FY2025
- $1.8M
- Funders on record
- 2
- Grants received
- $563k
- Net assets
- $1.3M
What Parkinson Study Group Inc does
Mission
Form 990, part iii, line 1: to make substantial advances in our understanding and treatment of parkinsons disease and other parkinsonian disorders; working as an efficient, collaborative network of talented clinicians and scientists and operating under a supportive and proactive leadership with broad backing from government, industry, foundation, and patient stake-holders in the parkinson community.
As stated on its FY2025 Form 990.
Program
The Entity facilitated the expansion and diversification of Parkinsons Disease (PD) trials and targeted indications, including trials for non-motor symptomatic indications, industry-sponsored trials, and investigator-initiated programs. It has developed collaborations with groups such as the Parkinsons Foundation, Pair Program, National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS), and The World Parkinson Congress. It has also provided a mentored clinical research award to support new investigators in a one-year project in patient-oriented research in Parkinsons Disease and Parkinsonian Disorders.
$1,184,652 spent$1,837,675 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $1,184,652.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 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 $749k to $1.1M (+47%).
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 6% · 2023 1% · 2024 12% · 2025 19%. Grants only. Government contracts and fees sit inside program revenue.
53% of PARKINSON STUDY GROUP INC’s revenue is contributions — more donation-reliant than the typical peer (51% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 7 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
Sarah Sperling
Executive Director
As listed on its FY2025 Form 990.
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 PARKINSON STUDY GROUP INC’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
PARKINSON STUDY GROUP INC leans on a few funders — its largest provides 96% 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
100% 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 PARKINSON STUDY GROUP INC.
“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
PARKINSON STUDY GROUP INC draws 100% of its grant income from funders outside Massachusetts, 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.
Against its field
PARKINSON STUDY GROUP INC has grown faster than three-quarters of the 4,665 health nonprofits its size.
this organization peer median middle 50% of peers· 4,665 health nonprofits $1M–$10M, FY2025
Organizations like PARKINSON STUDY GROUP INC
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
72% of spending goes to programs.
Governance
Public support
100%
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 PARKINSON STUDY GROUP INC: 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 PARKINSON STUDY GROUP INC?
- PARKINSON STUDY GROUP INC (Massachusetts) receives grants from 2 organizations whose IRS filings report $562,500 to it, the largest being PARKINSON'S FOUNDATION INC ($542,500). 2 of them have funded it in more than one year.
- How many funders does PARKINSON STUDY GROUP INC have?
- IRS filings report 2 organizations giving $562,500 in grants to PARKINSON STUDY GROUP INC, 2 of which have funded it in more than one year.
- Who is the largest funder of PARKINSON STUDY GROUP INC?
- PARKINSON'S FOUNDATION INC is the largest funder on record, with $542,500 in grants. The full list of funders is on this page.
- How can an organization like PARKINSON STUDY GROUP INC 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.
Play a game about who funds Parkinson Study Group →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), 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