Nonprofit · EIN 37-1004119
INTERNATIONAL SOCIETY OF ARBORICULTURE
Tax-exempt · ATLANTA, GA 30303
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $11,573,930 | $10,674,901 | $899,029 | $15,617,040 | $4,709,644 | $10,907,396 |
| December 31, 2023 | 990 | $10,747,280 | $9,882,585 | $864,695 | $14,385,560 | $4,978,510 | $9,407,050 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $3,063,393
- Membership dues
- $3,063,393
- Program service revenue
- $5,937,296
- Investment income
- $736,257
- Net gain from sales of assets
- $401,323
- Net income from sales of inventory
- $1,783,652
- Other revenue
- $1,836,984
Expenses
- Grants and similar amounts paid
- $61,268
- Compensation of officers, directors and key employees
- $922,100
- Salaries, compensation and benefits (total)
- $1,401,828
- Professional fundraising fees
- $0
- Legal fees
- $89,116
- Occupancy
- $387,798
- Travel
- $109,085
- Depreciation
- $65,062
- Program services (functional)
- $6,932,037
- Management and general (functional)
- $3,742,864
Balance sheet and other
- Total assets, start of year
- $14,385,560
- Total assets, end of year
- $15,617,040
- Total liabilities, end of year
- $4,709,644
- Net assets, end of year
- $10,907,396
- Land, buildings and equipment
- $568,125
- Publicly traded securities
- $4,821,740
- Net assets without donor restrictions
- $10,907,396
- Gross unrelated business income
- $64,719
- Gross receipts
- $12,913,147
- Employees
- 42
- Volunteers
- 1,300
- Year formed
- 1924
- State of legal domicile
- IL
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 December 31, 2024, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| Caitlyn Pollihan | CEO & Executive Director Officer | 40 | $359,703 | $28,935 |
| Chastity Austin | Director of Human Resources Highest-paid employee | 40 | $131,748 | $16,237 |
| Freddie Harroway | Director of Finance Highest-paid employee | 40 | $132,600 | $13,425 |
| Luana Vargas | Director of Credentialing Highest-paid employee | 40 | $126,776 | $18,224 |
| Alice Bagley | Director of Marketing Highest-paid employee | 40 | $118,310 | $16,921 |
| Jamie Vidich | Director of Educational Products Highest-paid employee | 40 | $116,931 | $13,356 |
| Nicolaas Verloop | President(Upto Oct 24) Trustee or director, Officer | 15 | $0 | $0 |
| Thomas Smiley | President Trustee or director, Officer | 10 | $0 | $0 |
| Gail Nozal | Vice President(Upto Oct 24) Trustee or director, Officer | 5 | $0 | $0 |
| Randall Miller | Secretary (Upto Oct 24) Trustee or director, Officer | 5 | $0 | $0 |
| Sharon Jean-Philippe | President- Elect Trustee or director, Officer | 5 | $0 | $0 |
| Christopher Boza | Treasurer Trustee or director | 5 | $0 | $0 |
| John Gathright | Member(Upto Oct 24) Trustee or director | 5 | $0 | $0 |
| Carlos Llanos Rojas | Member(Upto Oct 24) Trustee or director | 5 | $0 | $0 |
| John Coles | Member Trustee or director | 5 | $0 | $0 |
11 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Samuel Ma | Member Trustee or director | 5 | $0 |
| Tadashi Touchi | Member Trustee or director | 5 | $0 |
| Susan Day | Member Trustee or director | 5 | $0 |
| Jason Grabosky | Member Trustee or director | 5 | $0 |
| Jessica Sanders | Vice President Trustee or director | 5 | $0 |
| Michael Watson | Member Trustee or director | 5 | $0 |
| Lori Brockelbank | Member (Served October-December) Trustee or director | 5 | $0 |
| Rebecca Johnson | Member (Served October-December) Trustee or director | 5 | $0 |
| Tim Walsh | Member (Served October-December) Trustee or director | 5 | $0 |
| Stephen Lane | Member (Served October-December) Trustee or director | 5 | $0 |
| Lauren Marshall | Member (Served October-December) Trustee or director | 5 | $0 |
990 for the year ended December 31, 2023: 20 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| Caitlyn Pollihan | Ex-Officio Member Officer | 40 | $290,416 | $21,625 |
| Luana Vargas | Director, Credentialing Highest-paid employee | 40 | $125,097 | $15,191 |
| Chastity Austin | Director, Human Resources Highest-paid employee | 40 | $110,047 | $13,675 |
| Alice Bagley | Director, Marketing Highest-paid employee | 40 | $113,001 | $9,234 |
| Ashley Robinson | Director, Events Highest-paid employee | 40 | $103,521 | $1,840 |
| Nicolaas Verloop | President Trustee or director, Officer | 15 | $0 | $0 |
| Thomas Smiley | President -Elect Trustee or director, Officer | 10 | $0 | $0 |
| Gail Nozal | Vice President Trustee or director, Officer | 5 | $0 | $0 |
| Randall Miller | Secretary Trustee or director, Officer | 5 | $0 | $0 |
| Sharon Jean-Philippe | Treasurer Trustee or director, Officer | 5 | $0 | $0 |
| Christopher Boza | Member Trustee or director | 5 | $0 | $0 |
| John Gathright | Member Trustee or director | 5 | $0 | $0 |
| Carlos Llanos Rojas | Member Trustee or director | 5 | $0 | $0 |
| John Coles | Member Trustee or director | 5 | $0 | $0 |
| Samuel Ma | Member Trustee or director | 5 | $0 | $0 |
| Tadashi Touchi | Member Trustee or director | 5 | $0 | $0 |
| Susan Day | Member Trustee or director | 5 | $0 | $0 |
| Jason Grabosky | Member Trustee or director | 5 | $0 | $0 |
| Jessica Sanders | Member Trustee or director | 5 | $0 | $0 |
| Michael Watson | Member Trustee or director | 5 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 270 PEACHTREE ST NW STE 1900, ATLANTA, GA 30303-1581
- In care of
- % FRED HARROWAY
- Principal officer (990 for 2024)
- Caitlyn Pollihan, 270 Peachtree Street NW 1900, Atlanta, GA 30303
- Signed the 990
- Caitlyn Pollihan, CEO & Executive Director
- Phone
- (404) 892-9651
- Website
- www.isa-arbor.com
- Return prepared by
- Aprio Advisory Group LLC
Mission
Through research, technology, and education, the International Society of Arboriculture will promote the professional practice of arboriculture and foster a greater worldwide awareness of the benefits of trees.
Program accomplishments
- Credentialing - Provide certification examination services for potential candidates and recertification services to existing credentials to support the professional development of the arborists. the credentialing program serves over 61,000 credentials in 45 countries. ISA certification programs managed over 600,000 continuing education units submitted by various credential holders. ISA provides qualification training workshops and credential testing services for participants.Expenses $3,608,820 · revenue $4,911,496
- Educational Products and Services - EPS manages the development and production of monthly publications for isa members, to disseminate timely and relevant articles, news, information, and research regarding trees and tree care. EGS develops and distributes educational materials for the industry, including publications, workshop curriculum, online learning courses, podcasts, and consumer and industry brochures. 6 issues of the arborist news were published, 6 issues of the arboriculture and urban forestry journal were published, and 3new publications were published: tree injection BMP, Arborists' certification study guide and ITCC rule book.Expenses $472,303 · revenue $1,718,933
- Events - Operate educational events, including training workshops, conferences, tradeshows, and symposiums, to provide information regarding tree related subjects to members and attendees. ISA held it's Annual Conference and Trade Show in Atlanta in 2024. ISA provides for the International Tree Climbing Championship, North American Tree Climbing Competition, European Tree Climbing Competition, Asia-Pacific Tree Climbing Competition, and Latin America Tree Climbing Competition to highlight and demonstrate the various skills of arboricultural practitioners and tree climbing and creating awareness about the importance of trees and tree care to the public.Expenses $1,674,026 · revenue $1,025,800
- Expenses $1,176,888 · grants $61,268 · revenue $49,107
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 December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | Not on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 37-1004119
- Tax-exempt status
- 501(c)(5): Labor, agricultural or horticultural organization
- Donations deductible
- No
- Exempt since
- 1989
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $15,617,040
- Income (IRS master file)
- $12,913,147
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $11,573,930 | $10,674,901 | $15,617,040 | XML |
| 990 | December 2023 | $10,747,280 | $9,882,585 | $14,385,560 | XML |
| 990 | December 2022 | $10,071,372 | $8,880,457 | $12,667,373 | IRS |
| 990 | December 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 37-1004119).
Questions about INTERNATIONAL SOCIETY OF ARBORICULTURE
- What is the EIN of INTERNATIONAL SOCIETY OF ARBORICULTURE?
- The employer identification number (EIN) of INTERNATIONAL SOCIETY OF ARBORICULTURE is 37-1004119.
- Is INTERNATIONAL SOCIETY OF ARBORICULTURE tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(5) since 1989.
- Are donations to INTERNATIONAL SOCIETY OF ARBORICULTURE tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does INTERNATIONAL SOCIETY OF ARBORICULTURE 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 INTERNATIONAL SOCIETY OF ARBORICULTURE due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did INTERNATIONAL SOCIETY OF ARBORICULTURE last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of INTERNATIONAL SOCIETY OF ARBORICULTURE?
- The 990 for the year ended December 31, 2024 names Caitlyn Pollihan.
- Who are the officers and directors of INTERNATIONAL SOCIETY OF ARBORICULTURE?
- The 990 for the year ended December 31, 2024 lists 26 people; 6 received compensation from the organization, the highest $359,703 (Caitlyn Pollihan, CEO & Executive Director).
- How much revenue does INTERNATIONAL SOCIETY OF ARBORICULTURE have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $11,573,930, expenses of $10,674,901 and total assets of $15,617,040 at year end.
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