Washington · Nonprofit
SOUND DEFENSE ALLIANCE
SOUND DEFENSE ALLIANCE (Washington) receives grants from 2 organizations whose IRS filings report $79,500 to it, the largest being AMERICAN ENDOWMENT FOUNDATION ($72,500). 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 FY2024
- $51k
- Funders on record
- 2
- Grants received
- $80k
- Net assets
- $10k
What Sound Defense Alliance does
Mission
To reverse the US Navy's expansion of EA18-G Growler training on Whidbey Island, WA. To bring together several local organizations engaged in reducing noise in the region to build a base and impart information on the harms to the people, environment and economy of military jet operations over civilian and fragile environmental areas. To work with our legislators to require the Navy to monitor jet noise and to seek other locations to locate these military assets.
As stated on its FY2024 Form 990-EZ.
Programs
SDA Educational program - In 2024 we continued to hold public (Zoom) meetings, send out bi-monthly newsletters, post on Facebook & Instagram, and to provide listening sessions for those affected by the military to share their experiences We also participated in a Population Health Initiative Project in conjunction with the University of Washington in 2024 and shared the results with the community.
$50,341 spent67% of program spendingOur outreach and communications database was used to update the community on our accomplishments and give updates on relevant issues. Facebook and Instagram posts were enhanced and tracked - data showed ever increasing visits and engagement with our messaging. Other organizations with related missions were contacted and engaged with.
$22,494 spent30% of program spendingSDA Road Map program - We continued to develop and refine our proposed EA18-G "Growler" drawdown and replacement plan ("The SDA Roadmap"). This plan presents the US Navy with a reasonable and achievable means of permanently solving the worst of military jet noise in NW Washington's civilian populated areas and the Olympic National Forest, thereby helping the public in general while also providing alternative uses for the Navy's base on Whidbey Island, WA.
$1,825 spent2% of program spending
The 3 programs described on its FY2024 Form 990-EZ. Program spending in total: $74,660.
The organization over time
Each line starts at 100 in 2020, so what you read is the shape rather than the size: 150 means half as much again as 2020, 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 2022 to 2023, from $98k to $45k (−54%).
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.
100% of SOUND DEFENSE ALLIANCE’s revenue is contributions — more reliant on donations than three-quarters of its peers (92% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 5 reported years ran a deficit.
Who funds it, year by year
2021 → 2022: the base narrowed from 2 funders to 1 funder, grant income fell $32k → $20k.
2 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 SOUND DEFENSE ALLIANCE’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
SOUND DEFENSE ALLIANCE leans on a few funders — its largest provides 91% 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 SOUND DEFENSE ALLIANCE.
Largest funder’s share by year: 2021 78% · 2022 100% — 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.
Where its funders are
100% of SOUND DEFENSE ALLIANCE'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. $80k arriving through sponsors registered in 2 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
SOUND DEFENSE ALLIANCE has grown faster than half of the 3,152 environment nonprofits its size.
this organization peer median middle 50% of peers· 3,152 environment nonprofits under $100k, FY2024
Organizations like SOUND DEFENSE ALLIANCE
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 Washington
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
68%
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 SOUND DEFENSE ALLIANCE: 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 SOUND DEFENSE ALLIANCE?
- SOUND DEFENSE ALLIANCE (Washington) receives grants from 2 organizations whose IRS filings report $79,500 to it, the largest being AMERICAN ENDOWMENT FOUNDATION ($72,500). 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 SOUND DEFENSE ALLIANCE have?
- IRS filings report 2 organizations giving $79,500 in grants to SOUND DEFENSE ALLIANCE, 1 of which have funded it in more than one year.
- Who is the largest funder of SOUND DEFENSE ALLIANCE?
- AMERICAN ENDOWMENT FOUNDATION is the largest funder on record, with $72,500 in grants. The full list of funders is on this page.
- How can an organization like SOUND DEFENSE ALLIANCE find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Washington. 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 Sound Defense Alliance →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2020–2024), 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