Is it real?
Yes. Never revoked by the IRS. Latest filing on record: FY2025. IRS ruling in Aug 1937.
IRS Pub. 78 · IRS Auto-Revocation List · IRS Business Master File
Where the money goes
65 cents of each dollar spent went to programs.
Form 990 Part IX, line 25, columns B–D. Every line is in By the numbers.
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Who runs it and what they're paid
22 people listed on the 990; $278K paid to officers and key staff.
Jane Stonecipher’s $151K as Executive Director Through December is at the 64th percentile of top reported officer pay among 1851 $1–10M environment nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.
Compensation history total reportable pay by year · 4 named individuals · Part VII
| Name | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 |
|---|---|---|---|---|---|---|
| Jane Stonecipher | $150,784 | $156,310 | $147,016 | $151,264 | $138,792 | $145,100 |
| Clare Hausmann | $127,170 | $123,000 | — | — | — | — |
| Brittany Bolstad | — | $12,768 | $41,678 | $81,646 | $49,634 | — |
| Gary Wortzel | — | — | — | — | — | $64,030 |
Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.
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Questions the 990 asks
The form asks each of these directly. These are the filed answers.
- Family or business ties among officersPt VI · Ln 2No
- Top official's pay set by an independent reviewPt VI · Ln 15aYes
Programs and updates
Preserves, protects, and improves the Washington Park Arboretum for everyone.
Questions for Arboretum Foundation
Your first name shows with your question. Arboretum Foundation answers here, for everyone.
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The foundation provides annual funding to the university of washington botanic gardens to support ongoing horticultural care and maintenance to the washington park arboretum. This year's funding provided for 2 full-time arborists, the equivalent of 7 full-time gardener positions, and a plant propagator as well as important supplies and…
Capital Projects
The foundation expends funds in support of the arboretum's master plan, either through granting funds to partners at the university of washington botanic gardens and the city of seattle, or directly to outside vendors.
Education
As part of the foundation's mission to steward the arboretum for future generations, it provides volunteer opportunities, educational materials and funds for the k-12 programs run by partners at the university of washington botanic gardens.
Funders
Who pays for it.
From grant filings on record. Receipts are incomplete: individual donors are never listed.
Grants
By the numbers
The FY2025 990, line by line.
Download 990
| Line | Start FY25 | End FY25 |
|---|---|---|
| Cash and savingsLn 1–2 | $1.4M | $2.6M |
| InvestmentsLn 11–13 | $10.1M | $11.5M |
| Land, buildings, equipmentLn 10c | $0 | $21K |
| Total assetsLn 16 | $11.7M | $14.4M |
| LiabilitiesLn 26 | $220K | $219K |
| Net assetsLn 32 | $11.5M | $14.2M |
| Line | Total | Programs | Management | Fundraising |
|---|---|---|---|---|
| Grants to domestic organizationsLn 1 | $1.0M | $1.0M | ||
| Pay of current officers, directors and key staffLn 5 | $104K | $52K | $26K | $26K |
| Other salaries and wagesLn 7 | $900K | $409K | $184K | $308K |
| Pension plan contributionsLn 8 | $25K | $11K | $5K | $9K |
| Other employee benefitsLn 9 | $120K | $55K | $25K | $41K |
| Payroll taxesLn 10 | $113K | $51K | $23K | $39K |
| Management feesLn 11a | $192K | $81K | $71K | $40K |
| Legal feesLn 11b | $243K | $243K | ||
| Accounting feesLn 11c | $29K | $29K | ||
| Lobbying feesLn 11d | $48K | $48K | ||
| Investment management feesLn 11f | $48K | $48K | ||
| Other fees for servicesLn 11g | $417K | $351K | $40K | $27K |
| Advertising and promotionLn 12 | $9K | $4K | $3K | $3K |
| Office expensesLn 13 | $160K | $45K | $66K | $49K |
| Information technologyLn 14 | $107K | $8K | $77K | $23K |
| Depreciation, depletion and amortizationLn 22 | $634 | $634 | ||
| Other expenses (24a–d)Ln 24 | $102K | $30K | $49K | $24K |
| Total functional expensesLn 25 | $3.6M | $2.3M | $692K | $587K |
Filing history
| Year | Money in | Money out | In minus out | Net assets | Download |
|---|---|---|---|---|---|
| FY2025 Latest Viewing | $7.9M | $3.6M | $4.2M | $14.2M | 990 PDF |
| FY2024 | $4.0M | $3.4M | $680K | $11.5M | 990 PDF |
| FY2023 | $4.8M | $2.9M | $1.9M | $10.2M | 990 PDF |
| FY2022 | $5.0M | $2.8M | $2.1M | $7.9M | 990 PDF |
| FY2021 | $2.5M | $1.9M | $571K | $6.6M | 990 PDF |
| FY2020 | $1.6M | $1.9M | −$257K | $5.3M | 990 PDF |
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Schedules filed Part IV
See the full FY2025 990 (6 parts)
Part I · Summary $7,864,410 revenue, 12 lines filed
Part VI · Governance 20 of 20 board members independent, no flags
Part VIII · Statement of revenue $7,864,410 across 11 lines filed
Part IX · Statement of functional expenses $3,622,465 across 17 lines filed
Part X · Balance sheet $14,446,067 assets, 15 lines filed
Part XI · Reconciliation of net assets $14,226,596 net assets at year end
Form 990 e-file (XML) FY2025 from the IRS · Classification, formation year and address from the IRS Business Master File
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