Nonprofit · EIN 91-0613583
ARBORETUM FOUNDATION
Also known as SEATTLE BOTANIC GARDENS
Tax-exempt · SEATTLE, WA 98112
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $7,864,410 | $3,622,465 | $4,241,945 | $14,446,067 | $219,471 | $14,226,596 |
| June 30, 2024 | 990 | $4,043,563 | $3,363,272 | $680,291 | $11,699,187 | $220,441 | $11,478,746 |
| June 30, 2023 | 990 | $4,785,446 | $2,906,886 | $1,878,560 | $10,433,351 | $256,676 | $10,176,675 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $5,108,187
- of which government grants
- $343,790
- Program service revenue
- $147,589
- Investment income
- $2,452,993
- Net gain from sales of assets
- $1,970,169
- Net income from sales of inventory
- $154,309
- Other revenue
- $155,641
Expenses
- Grants and similar amounts paid
- $1,004,070
- Compensation of officers, directors and key employees
- $103,860
- Other salaries and wages
- $899,695
- Salaries, compensation and benefits (total)
- $1,262,156
- Professional fundraising fees
- $0
- Legal fees
- $242,934
- Accounting fees
- $28,595
- Depreciation
- $634
- Program services (functional)
- $2,342,808
- Management and general (functional)
- $692,432
- Fundraising (functional)
- $587,225
Balance sheet and other
- Total assets, start of year
- $11,699,187
- Total assets, end of year
- $14,446,067
- Total liabilities, end of year
- $219,471
- Net assets, end of year
- $14,226,596
- Land, buildings and equipment
- $20,879
- Publicly traded securities
- $11,495,109
- Net assets without donor restrictions
- $5,612,570
- Net assets with donor restrictions
- $8,614,026
- Gross unrelated business income
- $1,332
- Gross receipts
- $12,235,440
- Employees
- 18
- Volunteers
- 550
- Year formed
- 1937
- State of legal domicile
- WA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JANE STONECIPHER | EXECUTIVE DIRECTOR THROUGH DECEMBER Officer | 40 | $150,784 | $4,496 |
| CLARE HAUSMANN | ADVANCEMENT DIRECTOR Highest-paid employee | 40 | $127,170 | $25,471 |
| MARIBETH O'CONNOR | PRESIDENT Trustee or director, Officer | 10 | $0 | $0 |
| JEFF LEHMAN | TREASURER Trustee or director, Officer | 6 | $0 | $0 |
| JOSH DICKSON | SECRETARY Trustee or director, Officer | 6 | $0 | $0 |
| PETER REES | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| MIKE RILEY | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| ALISSA RUPP | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| SCOTT LINDSAY | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| JOHN REED | VICE PRESIDENT Trustee or director, Officer | 2 | $0 | $0 |
| THATCHER BAILEY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| SHAUN CORRY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| JOAQUIN HERNANDEZ | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| LARRY HUBBELL | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| BARBARA JACOBSON | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
7 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| VIRGINIA KORYCKI | BOARD MEMBER Trustee or director | 2 | $0 |
| BILL MCGEE | BOARD MEMBER Trustee or director | 2 | $0 |
| GLENN PINQUL | BOARD MEMBER Trustee or director | 2 | $0 |
| LISA VASSER | BOARD MEMBER Trustee or director | 2 | $0 |
| MISSY WARD | BOARD MEMBER Trustee or director | 2 | $0 |
| KARA WEAVER | BOARD MEMBER Trustee or director | 2 | $0 |
| BARBARA WRIGHT | BOARD MEMBER Trustee or director | 2 | $0 |
990 for the year ended June 30, 2024: 26 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JANE STONECIPHER | EXECUTIVE DIRECTOR Officer | 40 | $156,310 | $4,758 |
| CLARE HAUSMANN | ADVANCEMENT DIRECTOR Highest-paid employee | 40 | $123,000 | $24,283 |
| BRITTANY BOLSTAD | FINANCE DIRECTOR (RESIGNED) Officer | 8 | $12,768 | $0 |
| PETER REES | PRESIDENT Trustee or director, Officer | 6 | $0 | $0 |
| MARIBETH O'CONNOR | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| STEVE ALLEY | VICE PRESIDENT Trustee or director, Officer | 2 | $0 | $0 |
| SCOTT LINDSAY | VICE PRESIDENT Trustee or director, Officer | 2 | $0 | $0 |
| JENNIFER WYATT | VICE PRESIDENT (RESIGNED) Trustee or director, Officer | 4 | $0 | $0 |
| JEFF LEHMAN | TREASURER Trustee or director, Officer | 4 | $0 | $0 |
| JOSH DICKSON | SECRETARY Trustee or director, Officer | 2 | $0 | $0 |
| CONNOR BARCLAY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| SANJAY KUMAR | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| MISSY WARD | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| MIKE RILEY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| LARRY HUBBELL | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| KARA WEAVER | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| JOHN REED | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| YUKA SHIMIZU | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| SHAUN CORRY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| BEVERLY SONG | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| ALISSA RUPP | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| BILL MCGEE | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| JOANNA THIAGARAJAN | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| TYLER MORIGUCHI | BOARD MEMBER (RESIGNED) Trustee or director | 2 | $0 | $0 |
| NORIKO PALMER | BOARD MEMBER (RESIGNED) Trustee or director | 2 | $0 | $0 |
| LISA YOUNGBLOOD HALL | BOARD MEMBER (RESIGNED) Trustee or director | 2 | $0 | $0 |
990 for the year ended June 30, 2023: 26 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| JANE STONECIPHER | EXECUTIVE DIRECTOR Officer | 45 | $147,016 | $4,547 |
| BRITTANY BOLSTAD | FINANCE DIRECTOR Officer | 8 | $41,678 | $1,264 |
| PETER REES | PRESIDENT Trustee or director, Officer | 6 | $0 | $0 |
| JEFF LEHMAN | TREASURER Trustee or director, Officer | 4 | $0 | $0 |
| MARIBETH O'CONNOR | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| JEANNE PETERSON | SECRETARY Trustee or director, Officer | 4 | $0 | $0 |
| TRINNA WHERRY | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| JENNIFER WYATT | VICE PRESIDENT Trustee or director, Officer | 4 | $0 | $0 |
| ALISSA RUPP | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| BEVERLY SONG | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| BILL MCGEE | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| BOWMAN NEELY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| JOANNA THIAGARAJAN | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| JOHN REED | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| JOSH DICKSON | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| KAT KORAB | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| LARRY HUBBELL | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| LISA YOUNGBLOOD HALL | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| MIKE RILEY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| MISSY WARD | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| NORIKO PALMER | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| SCOTT LINDSAY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| SHAUN CORRY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| STEVE ALLEY | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| TYLER MORIGUCHI | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
| YUKA SHIMIZU | BOARD MEMBER Trustee or director | 2 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 2300 ARBORETUM DR E, SEATTLE, WA 98112-2300
- In care of
- % PAIGE MILLER
- Principal officer (990 for 2024)
- MARIBETH O'CONNOR, 2300 ARBORETUM DRIVE E, SEATTLE, WA 98112
- Signed the 990
- MARIBETH O'CONNOR, PRESIDENT
- Phone
- (206) 325-4510
- Website
- WWW.ARBORETUMFOUNDATION.ORG
- Return prepared by
- GREENWOOD OHLUND PS
Mission
THE ARBORETUM FOUNDATION PROMOTES, PROTECTS, AND ENHANCES THE WASHINGTON PARK ARBORETUM FOR CURRENT AND FUTURE GENERATIONS BY STRENGTHENING AND BUILDING A DIVERSE AND ENGAGED COMMUNITY OF DONORS, VOLUNTEERS, AND ADVOCATES.
Program accomplishments
- 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 EQUIPMENT.Expenses $682,709 · grants $543,095
- 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. CURRENT YEAR PROJECTS INCLUDE JAPANESE GARDEN ISHIGAKI WALL CONSTRUCTION PLANNING AND PACIFIC PATHWAYS DESIGN, AS WELL AS ONGOING RHODODENDRON GLEN MAINTENANCE. PRIOR YEAR WORK INCLUDES WOODLAND MEADOW PLANNING, JAPANESE GARDEN PAVILION IMPROVEMENTS, AND THE REPLACEMENT OF THE TSUTAKAWA GATES AT THE ENTRANCE TO AZALEA WAY.Expenses $364,861 · grants $252,808
- 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. PROGRAMS INCLUDE AN OUTDOOR PRESCHOOL, SUMMER CAMPS, SCHOOL FIELD TRIPS AND TWO DIFFERENT HIGH SCHOOL INTERN PROGRAMS. FUNDS RAISED HELP KEEP PRICES LOW, WITH SCHOLARSHIPS AVAILABLE FOR ALL PROGRAMS.Expenses $188,981 · grants $188,981
- MORE THAN 550 VOLUNTEERS DONATED APPROXIMATELY 14,600 HOURS FOR THE BENEFIT OF THE ARBORETUM DURING THIS FISCAL YEAR. THE FOUNDATION HIRES STAFF TO COORDINATE THE VOLUNTEER GARDEN STEWARDS WHO CARE FOR THE GROUNDS, FOCUSED ON THE PACIFIC CONNECTIONS GARDENS AND AZALEA WAY. FOUNDATION STAFF ALSO OVERSEE THE VOLUNTEER-RUN PLANT DONATIONS NURSERY AND GREENHOUSE, WHICH HAVE PROGRAMS TO PROVIDE EDUCATION AND PLANTS TO THE PUBLIC. FOUNDATION STAFF ALSO COORDINATE A FULL SLATE OF PROGRAMMING AT THE JAPANESE GARDEN, INCLUDING ARTS-FOCUSED FREE FIRST THURSDAYS AND PROGRAMS FOR CHILDREN ON FAMILY SATURDAYS.Expenses $1,106,257 · grants $19,186 · revenue $301,898
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 91-0613583
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1937
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C114)
- Assets (IRS master file)
- $14,446,067
- Income (IRS master file)
- $12,235,440
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $7,864,410 | $3,622,465 | $14,446,067 | XML |
| 990-T | June 2025 | – | – | – | IRS |
| 990 | June 2024 | $4,043,563 | $3,363,272 | $11,699,187 | XML |
| 990-T | June 2024 | – | – | – | IRS |
| 990 | June 2023 | $4,785,446 | $2,906,886 | $10,433,351 | XML |
| 990-T | June 2023 | – | – | – | IRS |
| 990 | June 2022 | $4,956,558 | $2,837,334 | $8,009,608 | IRS |
| 990-T | June 2022 | – | – | – | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990-T | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 91-0613583).
Questions about ARBORETUM FOUNDATION
- What is the EIN of ARBORETUM FOUNDATION?
- The employer identification number (EIN) of ARBORETUM FOUNDATION is 91-0613583.
- Is ARBORETUM FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1937.
- Are donations to ARBORETUM FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does ARBORETUM FOUNDATION file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of ARBORETUM FOUNDATION due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did ARBORETUM FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of ARBORETUM FOUNDATION?
- The 990 for the year ended June 30, 2025 names MARIBETH O'CONNOR.
- Who are the officers and directors of ARBORETUM FOUNDATION?
- The 990 for the year ended June 30, 2025 lists 22 people; 2 received compensation from the organization, the highest $150,784 (JANE STONECIPHER, EXECUTIVE DIRECTOR THROUGH DECEMBER).
- How much revenue does ARBORETUM FOUNDATION have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $7,864,410, expenses of $3,622,465 and total assets of $14,446,067 at year end.
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