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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 Philanthropy, Voluntarism & Grantmaking Elkhorn Slough Foundation

Elkhorn Slough Foundation

Fiscal year ending 2024. Filed on April 9, 2025.

PO Box 267
Moss Landing, California 95039

Elkhorn Slough Foundation (EIN: 94-2823247) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2024 IRS Form 990 filing, Elkhorn Slough Foundation, a 501(c)(3) charitable organization, reported compensation for 3 out of 46 total employees. Among the employees shown here, the average compensation is $143,679. The highest compensated employee at Elkhorn Slough Foundation is Mark Silberstein with fiscal year 2024 compensation of $184,722.

Revenue, expenses, and employee compensation

Revenue

$9,674,181

Expenses

$5,428,542

Employee compensation

$2,429,941
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

Mark Silberstein
Executive Director
$184,722
$173,768 No related comp$10,954
Monique Fountain
Tidal Wetlands Program Director
$125,414
$100,460 No related comp$24,954
Taylor Honrath
Associate Director
$120,901
$105,542 No related comp$15,359

Benchmark Employee Compensation

Non-Employee Board Members

Anne Secker
Treasurer
Bruce Welden
President
David Warner
Trustee
Emmett Linder
Trustee
Gary Bloom
Trustee
Judith Connor
Trustee
Kent Marshall
Trustee
Laura Solorio
Trustee
Robert Hartmann
Vice President
Sandy Hale
Trustee
Susan Matcham
Trustee
Tara Trautsch
Secretary

Contractors

Ventana Ranch & Vineyard Services Lp Dba
Land Management and Forestry
$266,086

Mission Statement

The Elkhorn Slough Foundation's mission is to conserve and restore Elkhorn Slough and its watershed, California's largest tidal salt marsh south of San Francisco Bay. Renowned for its extraordinary biodiversity, Elkhorn Slough features a dynamic working landscape intertwined with rich natural habitats. To achieve its mission, the Elkhorn Slough Foundation focuses on the direct acquisition and stewardship of key lands while collaborating with partnerorganizations and agencies. Together, they advance sound scientific research, deliver impactful education programs, and foster meaningful community engagement. As an accredited organization through the Land Trust Alliance Accreditation Commission, the Foundation upholds the highest standards in conservation and land stewardship.

Revisions to this organization profile

April 9, 2025:
2024 Elkhorn Slough Foundation 990 filed
May 15, 2024:
2023 Elkhorn Slough Foundation 990 filed
August 7, 2023:
2022 Elkhorn Slough Foundation 990 filed

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