Public Charity

NATURAL STONE INSTITUTE

Based in OBERLIN, OH, NATURAL STONE INSTITUTE operates as a Public Charity. The organization reported $4.2M in revenue, $4.1M in expenses, $4.5M in total assets for fiscal year 2025. Imperigo tracks 6 reported grant relationships connected to this organization totaling approximately $440K.

EIN: 382817639 OBERLIN, OH Latest filing: 2025
Total Revenue$4.2M
Total Expenses$4.1M
Total Assets$4.5M
Grant Records6
Funding Total$440K
Filing Years2021–2025

Mission

TO LEAD, SUPPORT, AND PROMOTE A UNIFIED NATURAL STONE INDUSTRY THROUGH AUTHORITIVE INFORMATION, EDUCATION, STANDARDS, AND ADVOCACY. ADDITIONALLY, ITS CORE VALUES INCLUDE LEADERSHIP, STEWARDSHIP, COLLABORATION, AND PROFESSIONALISM.THE NATURAL STONE INSTITUTE (NSI) WAS FORMED IN 2018 AS A MERGER OF THE MARBLE INSTITUTE OF AMERICA (MIA) AND THE BUILDING STONE INSTITUTE (BSI). THE BUILDING STONE INSTITUTE WAS FORMED IN 1894 AS THE INTERNATIONAL CUT STONE CONTRACTORS AND QUARRYMEN'S ASSOCIATION; THE NAME WAS CHANGED TO THE BUILDING STONE INSTITUTE IN 1955. ESTABLISHED IN 1903 AS THE NATIONAL ASSOCIATION OF MARBLE DEALERS, THE MARBLE INSTITUTE OF AMERICA OFFICIALLY FORMED IN 1944, WHEN THE ASSOCIATION MERGED WITH THE NATIONAL ASSOCIATION OF MARBLE PRODUCERS. IN 1962, THE NATIONAL ASSOCIATION OF MARBLE BUILDERS MERGED WITH MARBLE INSTITUTE OF AMERICA.

Where $100 goes at Natural Stone Institute

How Natural Stone Institute divides every $100 it spends, from its own Form 990 filings, averaged across 8 years.

$42 Programs the work itself
$58 Management running the organization
$0 Fundraising none reported

No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.

Inside the $42 for programs

$19
Electronic media and publications:the organization provides a variety of print and electronic publications, including a bi-monthly member newsletter and magazine for the design community
45% of program spending
$12
Industry education:the organization provides high quality educational programming for natural stone professionals through the following outlets: trade shows, regional seminars, online education, and webinars
28% of program spending
$9
Technical and educational services
22% of program spending

Plus 1 more program. Cost per person served and the full program breakdown are on the full profile.

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Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.

Officers & Directors

TREASURER Blake Christensen
DIRECTOR Darrell Petit
PRESIDENT Evan Cohen
DIRECTOR Filippo Emanuel
DIRECTOR Irini Papagiannouli
CHIEF EXECUTIVE OFFICER James Hieb

Officer compensation and complete director data available with membership.

Top Grant Purposes

General Support
$429,883 5 grants
Unspecified
$10,000 1 grant

Financial Trends

Year Revenue Expenses Assets
2025 $4.2M $4.1M $4.5M
2024 $3.9M $3.9M $4.3M
2023 $3.4M $3.4M $4.2M
2022 $3.3M $3.0M $3.6M
2021 $2.9M $2.5M $4.2M

Between 2021 and 2025, reported annual revenue grew from $2.9M to $4.2M (+46%), with total assets most recently reported at $4.5M.

Interactive year-over-year charts and full filing details available with membership.

See the full picture for NATURAL STONE INSTITUTE

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