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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Organizations International Society of Arboriculture

International Society of Arboriculture

Fiscal year ending 2018. Filed on December 19, 2018.

2101 West Park Ct P O Box 3129
Champaign, Illinois 61826

International Society of Arboriculture (EIN: 37-1004119) has filed an IRS Form 990 since fiscal year 2017. In its fiscal year 2018 IRS Form 990 filing, International Society of Arboriculture, a 501(c)(5) labor, agricultural, or horticultural organization, reported compensation for 2 out of 63 total employees. Among the employees shown here, the average compensation is $151,927. The highest compensated employee at International Society of Arboriculture is Caitlyn Pollihan with fiscal year 2018 compensation of $186,076.

Revenue, expenses, and employee compensation

Revenue

$7,215,455

Expenses

$7,005,194

Employee compensation

$2,434,208
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

Caitlyn Pollihan
Executive Director, Non-Vo
$186,076
$174,795 No related comp$11,281
Mark Bluhm
Former Finance Director
$117,777
$101,571 No related comp$16,206

Benchmark Employee Compensation

Non-Employee Board Members

Skip Kincaid
Director
$90
$90 No related compNo other comp
Jim Flott
Director
$30
$30 No related compNo other comp
Russell Calson
Director
No compensation reported
Chris Walsh
Treasurer
No compensation reported
Nicholaas Verllop
Director
No compensation reported
Dennis Swartzell
Secretary
No compensation reported
Scott Prophett
Director
No compensation reported
Gordon Mann
Director
No compensation reported
Pedro Mendes Castro
President-Elect
No compensation reported
Dana Karcher
Director
No compensation reported
Tom Wolf
Director
No compensation reported
Anne Beard
Director
No compensation reported

Contractors

Ncs Pearson
Test Adminstration
$353,677
Marriott Business Services
Food and Beverage
$267,643
Ups
Shipping
$225,569
Martin One Source
Printing and Mailing
$195,848
Western Chapter Isa
Revenue Share Certification and Olc
$171,711

Mission Statement

Through research, technology, and education, the International Society of Arboriculture (ISA) will promote the professional practice of arboriculture and foster a greater worldwide awareness of the benefits of trees.

Revisions to this organization profile

October 23, 2025:
2024 International Society of Arboriculture 990 filed
October 3, 2024:
2023 International Society of Arboriculture 990 filed
November 15, 2023:
2022 International Society of Arboriculture 990 filed

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