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
76 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
28 people listed on the 990; $233K 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
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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 and the equivalent of 5 full-time gardener positions as well as important supplies and equipment.
Capital Projects
The foundation granted funds to the university of washington botanic gardens and to the city of seattle for clean-up, plantings, removal of invasive plants, and general beautification on lake washington boulevard near the recently completed arboretum loop trail.
Education
The foundation exists primarily to support the washington park arboretum and programs occurring within the arboretum. To this end, the foundation provides volunteer opportunities, educational materials, and funds for the k-12 programs that are run by 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 FY2022 990, line by line.
Download 990
| Line | Start FY22 | End FY22 |
|---|---|---|
| Cash and savingsLn 1–2 | $510K | $472K |
| InvestmentsLn 11–13 | $6.0M | $7.4M |
| Land, buildings, equipmentLn 10c | $0 | $0 |
| Total assetsLn 16 | $6.8M | $8.0M |
| LiabilitiesLn 26 | $202K | $112K |
| Net assetsLn 32 | $6.6M | $7.9M |
| Line | Total | Programs | Management | Fundraising |
|---|---|---|---|---|
| Grants to domestic organizationsLn 1 | $1.4M | $1.4M | ||
| Pay of current officers, directors and key staffLn 5 | $328K | $121K | $104K | $103K |
| Other salaries and wagesLn 7 | $506K | $329K | $63K | $114K |
| Pension plan contributionsLn 8 | $11K | $4K | $4K | $3K |
| Other employee benefitsLn 9 | $88K | $49K | $16K | $23K |
| Payroll taxesLn 10 | $84K | $45K | $17K | $22K |
| Legal feesLn 11b | $26K | $26K | ||
| Accounting feesLn 11c | $26K | $26K | ||
| Lobbying feesLn 11d | $14K | $14K | ||
| Investment management feesLn 11f | $51K | $51K | ||
| Other fees for servicesLn 11g | $31K | $14K | $17K | |
| Office expensesLn 13 | $87K | $83K | $1K | $3K |
| InsuranceLn 23 | $7K | $4K | $1K | $2K |
| Other expenses (24a–d)Ln 24 | $221K | $130K | $49K | $42K |
| Total functional expensesLn 25 | $2.8M | $2.2M | $358K | $328K |
Filing history
| Year | Money in | Money out | In minus out | Net assets | Download |
|---|---|---|---|---|---|
| FY2025 Latest | $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 Viewing | $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 FY2022 990 (6 parts)
Part I · Summary $4,956,558 revenue, 12 lines filed
Part VI · Governance 24 of 24 board members independent, no flags
Part VIII · Statement of revenue $4,956,558 across 11 lines filed
Part IX · Statement of functional expenses $2,837,334 across 14 lines filed
Part X · Balance sheet $8,009,608 assets, 17 lines filed
Part XI · Reconciliation of net assets $7,897,745 net assets at year end
Form 990 e-file (XML) FY2022 from the IRS · Classification, formation year and address from the IRS Business Master File
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