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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 Environmental Quality, Protection & Beautification Open Space Institute Inc.

Open Space Institute Inc.

Fiscal year ending 2017. Filed on October 22, 2018.

1350 Broadway No 201
New York, New York 10018

Open Space Institute Inc. (EIN: 52-1053406) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2017 IRS Form 990 filing, Open Space Institute Inc., a 501(c)(3) charitable organization, reported compensation for 17 out of 57 total employees. Among the employees shown here, the average compensation is $225,674. The highest compensated employee at Open Space Institute Inc. is Christopher Elliman with fiscal year 2017 compensation of $511,819.

Revenue, expenses, and employee compensation

Revenue

$2,147,064

Expenses

$959,520

Employee compensation

$336,809
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

Christopher Elliman
President and Chief Executive Officer
$511,819
$461,131 No related comp$50,688
Peter Howell
Executive Vice President, Conservation
$278,588
$240,633 No related comp$37,955
Tally Blumberg
Senior Vice President, Programs
$260,440
$213,259 No related comp$47,181
Leslie Kane Szynal
Director, Outdoors America
$259,020
$212,613 No related comp$46,407
Robert K Anderberg
Senior Vice President and General Counsel
$256,926
$218,266 No related comp$38,660
Erik Kulleseid
Senior Vice President, NYS Parks
$244,769
$199,438 No related comp$45,331
Terrence Nolan
Senior Vice President, Conserv. Transactions
$243,575
$198,244 No related comp$45,331
Samayla Deutch
Senior Vice President and General Counsel
$232,991
$196,328 No related comp$36,663
Rachel Pivnick
Senior Vice President and Chief Financial Officer
$224,648
$197,284 No related comp$27,364
Nate Berry
Vice President
$203,880
$161,831 No related comp$42,049
Jeffrey Lejava
Vice President and Assoc. General Counsel
$202,810
$160,339 No related comp$42,471
Joseph Martens
Senior Fellow (Resigned 08/04/2017)
$178,597
$138,596 No related comp$40,001

Benchmark Employee Compensation

Non-Employee Board Members

Amelia Salzman
Co-Chair
Carol Ash
Board Member
Caroline Niemczyk
Vice Chair
Dale S Bryk
Board Member
Douglas Bateson
Board Member
Elizabeth Borden
Board Member
Elizabeth Smith
Board Member (Left 12/15/17)
Gilman S Burke
Board Member
Holly Hegener
Board Member
Hume R Steyer
Secretary
Jennifer Cunningham
Board Member
John Cahill
Board Member

Mission Statement

OSI PROTECTS LAND FOR CLEAN DRINKING WATER, PUBLIC RECREATION, HEALTHY COMMUNITIES, AND WILDLIFE HABITAT; AND TO CONSERVE INTACT FORESTS AND FLOODPLAINS THAT CAPTURE AND STORE CARBON AND PROTECT AGAINST INCREASINGLY DANGEROUS WEATHER EVENTS.

Revisions to this organization profile

November 7, 2025:
2024 Open Space Institute Inc. 990 filed
November 1, 2024:
2023 Open Space Institute Inc. 990 filed
November 10, 2023:
2022 Open Space Institute Inc. 990 filed

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