International Society of Arboriculture
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.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$15.6M
+8.6% YoY
Annual Giving
$61K
+0.8% YoY
Grant Count
1
+0.0% YoY
Avg Grant Size
$61K
+0.8% YoY
About International Society of Arboriculture
Based on IRS filings
International Society of Arboriculture is a nonprofit organization, based in ATLANTA, GA. IRS filing data is available from 2019 through 2024. As of 2024, the organization holds $15.6M in total assets. In 2024, it awarded 1 grants totaling $61K. Net investment income was $736K.
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $15,617,040 | $14,385,560 | $12,667,373 |
| Revenue | $11,573,930 | $10,747,280 | $10,071,372 |
| Expenses | $10,674,901 | $9,882,585 | $8,880,457 |
| Qualifying Distributions | — | — | — |
| Net Investment Income | $736,257 | $128,418 | — |
| Distributable Amount | — | — | — |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 1 recipients in 2024
Grant Size Distribution
5 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Nicolaas Verloop | President(Upto Oct 24) | 15 | — |
| Thomas Smiley | President | 10 | — |
| Gail Nozal | Vice President(Upto Oct 24) | 5 | — |
| Randall Miller | Secretary (Upto Oct 24) | 5 | — |
| Sharon Jean-Philippe | President- Elect | 5 | — |
| Christopher Boza | Treasurer | 5 | — |
| John Gathright | Member(Upto Oct 24) | 5 | — |
| Carlos Llanos Rojas | Member(Upto Oct 24) | 5 | — |
| John Coles | Member | 5 | — |
| Samuel Ma | Member | 5 | — |
| Tadashi Touchi | Member | 5 | — |
| Susan Day | Member | 5 | — |
| Jason Grabosky | Member | 5 | — |
| Jessica Sanders | Vice President | 5 | — |
| Michael Watson | Member | 5 | — |
| Lori Brockelbank | Member (Served October-December) | 5 | — |
| Rebecca Johnson | Member (Served October-December) | 5 | — |
| Tim Walsh | Member (Served October-December) | 5 | — |
| Stephen Lane | Member (Served October-December) | 5 | — |
| Lauren Marshall | Member (Served October-December) | 5 | — |
| Caitlyn Pollihan | CEO & Executive Director | 40 | $359,703 |
| Freddie Harroway | Director of Finance | 40 | $132,600 |
| Chastity Austin | Director of Human Resources | 40 | $131,748 |
| Luana Vargas | Director of Credentialing | 40 | $126,776 |
| Alice Bagley | Director of Marketing | 40 | $118,310 |
| Jamie Vidich | Director of Educational Products | 40 | $116,931 |
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Data last updated April 2026. Sourced from IRS Form 990-PF filings.
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