Washington · Nonprofit
350 Seattle
350 Seattle (Washington) receives grants from 54 organizations whose IRS filings report $6,504,839 to it, the largest being SUSTAINABLE MARKETS FOUNDATION ($1,549,850). 28 of them have funded it in more than one year.
- Revenue FY2024
- $2.9M
- Funders on record
- 54
- Grants received
- $6.5M
- Net assets
- $1.5M
What 350 Seattle does
Mission
350 Seattle works toward climate justice by organizing people to make deep systems change: resisting fossil fuels; building momentum for healthy alternatives; and fostering resilient, just, and welcoming communities.
As stated on its FY2024 Form 990.
Programs
On its FY2023 return the organization reported starting a significant new program.
Since 2019, 350 Seattle has had a Model A fiscally sponsored project that works to hold Amazon accountable in the pursuit of climate justice (this aligns with our mission because it falls under our work to hold corporations accountable for the climate crisis). In 2022, we took on an additional Model A fiscally sponsored project, also under the umbrella of corporate accountability, that focuses on divestment and pressuring banks, asset managers and insurance companies to divest from fossil fuels. At the end of 2022, 350 Seattle had two Model A fiscally sponsored projects. The first project works to hold Amazon accountable in the pursuit of climate justice. This aligns with our mission because it falls under our work to hold corporations accountable for the climate crisis. The other project also falls under the umbrella of corporate accountability; it focuses on divestment and pressuring banks, asset managers and insurance companies to divest from fossil fuels. In 2023, 350 Seattle took on a third Model A fiscally sponsored project. This project works to create a framework for community-led reparations in Seattle, King County, and surrounding counties. This effort to promote racial healing, equity, and justice for Black communities and the broader public aligns with our mission to foster resilient, just, and welcoming communities.
Its own explanation, from Schedule O of that return (Part III, line 2).
Divestment and Corporate Accountability - See Schedule O
$978,794 spent61% of program spendingCommunity Solutions - See Schedule O
$372,835 spent23% of program spendingMovement Building & Support - See Schedule O
$185,821 spent12% of program spendingResistance - See Schedule O
$66,013 spent4% of program spending
The 4 programs described on its FY2023 Form 990, listed largest first by expense. Program spending in total: $1,603,463.
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 $729k to $1.3M (+74%).
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: 2024 2%. Grants only. Government contracts and fees sit inside program revenue.
93% of 350 Seattle’s revenue is contributions — more donation-reliant than the typical peer (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 5 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
Shemona Moreno
Executive Director
As listed on its FY2024 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 4 funders to 23 funders, grant income rose $52k → $1.7M.
17 of 54 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 24% 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 350 Seattle’s funders (the co-funder graph). Top 30 of 54 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
350 Seattle has a broad base — no single funder exceeds 24% of grant income, and it takes 5 funders to reach half.
the vertical line marks half of all grant income — 5 funders to its left
61% 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 350 Seattle.
Largest funder’s share by year: 2017 57% · 2018 100% · 2019 35% · 2020 27% · 2021 29% · 2022 34% · 2023 36% — 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
46% of 350 Seattle's funders are still giving 3 years after their first grant; 52% 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
350 Seattle draws 65% of its grant income from funders outside Washington, across 11 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $1.6M arriving through sponsors registered in 10 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
350 Seattle has grown faster than three-quarters of the 2,187 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,187 environment nonprofits $1M–$10M, FY2024
Organizations like 350 Seattle
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.
Where the money goes
87% of spending goes to programs.
Governance
Public support
95%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for 350 Seattle: 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 350 Seattle?
- 350 Seattle (Washington) receives grants from 54 organizations whose IRS filings report $6,504,839 to it, the largest being SUSTAINABLE MARKETS FOUNDATION ($1,549,850). 28 of them have funded it in more than one year.
- How many funders does 350 Seattle have?
- IRS filings report 54 organizations giving $6,504,839 in grants to 350 Seattle, 28 of which have funded it in more than one year.
- Who is the largest funder of 350 Seattle?
- SUSTAINABLE MARKETS FOUNDATION is the largest funder on record, with $1,549,850 in grants. The full list of funders is on this page.
- How can an organization like 350 Seattle 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 350 Seattle →
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 54 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