INSTITUTE OF NUCLEAR MATERIALS MANAGEMENT

EIN: 310740753

INDIANAPOLIS, IN

Total Revenue
$2,064,070
Total Expenses
$1,716,215
Total Assets
$991,605
Net Assets
$912,880
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Financial Vulnerability Assessment (Tuckman-Chang)

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Financial Trends

Organization Details

Formation Year
1958
Legal Domicile
OH
Principal Officer
KENT LINDEMAN
Phone
3179070090
Tax Period
2024-10-01 to 2025-09-30

INSTITUTE OF NUCLEAR MATERIALS MANAGEMENT, founded in 1958, is a community nonprofit that reported $2.1M in total revenue in fiscal year 2024. Revenue surged 103% from the prior year, signaling strong growth momentum. The organization ran a surplus of $348K, a strong 17% operating margin.

Mission

INMM IS DEDICATED TO THE SAFE, SECURE, AND EFFECTIVE MANAGEMENT AND STEWARDSHIP OF NUCLEAR AND OTHER RADIOACTIVE MATERIALS. WE PROMOTE THE ADVANCEMENT OF SCIENTIFIC KNOWLEDGE AND TECHNOLOGIES, PROFESSIONAL DEVELOPMENT, BEST PRACTICES, AND POLICY DIALOGUE.

Program Service Accomplishments

Program 1
Expenses: $1,321,665 Revenue: $2,022,214

THE ANNUAL AND ADDITIONAL MEETINGS PROVIDE ATTENDEES WITH A PROFESSIONAL FORUM FOR THE EXCHANGE OF THE LATEST TECHNICAL INFORMATION IN NUCLEAR MATERIALS MANAGEMENT. THE MEETINGS ADDRESS ALL ASPECTS...

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THE ANNUAL AND ADDITIONAL MEETINGS PROVIDE ATTENDEES WITH A PROFESSIONAL FORUM FOR THE EXCHANGE OF THE LATEST TECHNICAL INFORMATION IN NUCLEAR MATERIALS MANAGEMENT. THE MEETINGS ADDRESS ALL ASPECTS OF NUCLEAR MATERIAL MANAGEMENT WITH PAPERS AND POSTERS ORGANIZED BY THE INMM TECHNICAL PROGRAM COMMITTEE. ALL ATTENDEES MOSTLY MEMBERS, COMPROMISED BY THE ACADEMICS, CONSULTANTS, GOVERNMENT CONTRACTORS/EMPLOYEES. LICENSEES, NEWS MEDIA, NON- GOVERNMENTAL ORGANIZATIONS, NUCLEAR LABORATORIES, PRIVATE INDUSTRY PROFESSIONALS, PUBLIC OFFICIALS, PUBLICS UTILITIES AND GRADUATE STUDENTS ATTEND THE MULTI-DAY INMM ANNUAL MEETING. THERE ARE TYPICALLY 60 CONCURRENT EDUCATIONAL SESSIONS. PAPERS PRESENTED AT THE ANNUAL MEETING ARE PUBLISHED ONLINE FOR MEMBERS AND MEETING ATTENDEES AND WILL BE AVAILABLE FOR SUBSCRIPTION TO NONMEMBERS IN THE FUTURE.

Program 2
Expenses: $6,731 Revenue: $6,286

THE JOURNAL IS PUBLISHED WITH THE PURPOSE OF ADVANCING AND PROMOTING EFFICIENT MANAGEMENT OF NUCLEAR MATERIALS. THE JOURNAL IS PUBLISHED FOUR TIMES A YEAR AND IS DISTRIBUTED TO OVER 1200 MEMBERS AND...

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THE JOURNAL IS PUBLISHED WITH THE PURPOSE OF ADVANCING AND PROMOTING EFFICIENT MANAGEMENT OF NUCLEAR MATERIALS. THE JOURNAL IS PUBLISHED FOUR TIMES A YEAR AND IS DISTRIBUTED TO OVER 1200 MEMBERS AND NON-MEMBERS.

Program 3
Expenses: $20,560 Revenue: $23,218

WORKSHOPS PROVIDE PARTICIPANTS WITH UPDATED INFORMATION ON SPECIFIC TOPICAL AREAS OF NUCLEAR MATERIALS MANAGEMENT INCLUDING GOVERNMENT PROGRAMS AND POLICY DEVELOPMENT, THE STATUS OF TECHNOLOGIES AND...

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WORKSHOPS PROVIDE PARTICIPANTS WITH UPDATED INFORMATION ON SPECIFIC TOPICAL AREAS OF NUCLEAR MATERIALS MANAGEMENT INCLUDING GOVERNMENT PROGRAMS AND POLICY DEVELOPMENT, THE STATUS OF TECHNOLOGIES AND PROJECTS, LICENSING OF MANAGEMENT FACILITIES AND EQUIPMENT AND THE SPECIAL CONSIDERATIONS RELATED TO THE TECHNICAL PROGRAM AREAS. ATTENDEES ACTIVELY PARTICIPATE IN THE DISCUSSIONS AND INTERFACE WITH EXPERTS AS WELL AS WITH PROGRAM MANAGERS AND POLICY MAKERS. OVER 100 ATTENDEES ATTENDED VARIOUS EDUCATIONAL WORKSHOPS THROUGHOUT THE YEAR. PAPERS PRESENTED AT THE WORKSHOPS ARE PUBLISHED AND AVAILABLE AFTER THE EVENT.

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Trantor Score

Financial Health Score (300–850) · Liquidity · Solvency · Sustainability · Efficiency

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Liquidity (40%) • Solvency (30%) • Sustainability (20%) • Efficiency (10%)

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Financial Overview (2024)

Revenue Breakdown

Contributions & Grants $0
Program Service Revenue $2,051,718
Investment Income $11,268
Other Revenue $1,084
TOTAL REVENUE $2,064,070

Expense Breakdown

Grants Paid $11,032
Salaries & Benefits $0
Fundraising Expenses $0
Program Expenses $1,348,956
Other Expenses $1,705,183
TOTAL EXPENSES $1,716,215

Year-over-Year Comparison

2024 2023 Change
Revenue $2,064,070 $1,015,359 +1.0%
Expenses $1,716,215 $1,107,263 +0.5%
Net Income $347,855 $-91,904 -4.8%
Key Indicators
Grants to Organizations Grants to Individuals Lobbying Political Activity Foreign Activities Donor Advised Fund Schedule B Required
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Financial Distress Indicator

Liquidity & Cash Position

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Governance

Voting Members
9
Independent Members
9
Employees
N/A
Volunteers
100

Governance Policies

Conflict of Interest Policy
Whistleblower Policy
Document Retention Policy

Special Practices & Reported Activities

Operated a School
Operated a Hospital
Provided First Class Travel
Reported Conflict of Interest
Reported Asset Diversion
Excess Benefit Transaction
Made Political Expenditures
Engaged in Lobbying
Operated Donor Advised Fund
Maintained Art Collections
Filed Form 720

Compensation of Officers, Directors & Key Employees

Total Officers
5
$0
Total Directors
10
$0
Key Employees
0
$0
Highest Compensated
0
reported
Name Title Hours/Week Role Reportable Comp Other Comp Total
JAMES ANDRE TREASURER 5.00
Officer Director
$0 $0 $0
YANA FELDMAN MEMBER AT LA 1.50
Director
$0 $0 $0
MAREK FLASKA MEMBER AT LA 1.50
Director
$0 $0 $0
TINA HERNANDEZ PRESIDENT 6.00
Officer Director
$0 $0 $0
TERESSA MCKINNEY SECRETARY 3.00
Officer Director
$0 $0 $0
SUSAN PEPPER IMMIDEIATE P 1.50
Director
$0 $0 $0
LAURA ROCKWOOD VICE PRESIDE 5.00
Officer Director
$0 $0 $0
AMANADA RYNES MEMBER AT LA 1.50
Director
$0 $0 $0
MARK SCHANFEIN IMMEDIATE PA 1.50
Director
$0 $0 $0
NA YOUNG MEMBER AT LA 1.50
Director
$0 $0 $0
KENT LINDEMAN EXECUTIVE DI 1.50
Officer
$0 $0 $0
Note: Compensation data is self-reported by the organization on their Form 990. "Reportable Comp" includes salary, bonuses, and other reportable compensation from the organization and related organizations. "Other Comp" includes benefits, deferred compensation, and non-taxable benefits.

Historical Data

Year Revenue Expenses Assets Net Income
2025 $2,064,070 $1,716,215 $991,605 $347,855
2024 $1,015,359 $1,107,263 $667,929 $-91,904
2023 $887,875 $1,182,672 $726,486 $-294,797
2022 $421,515 $518,944 $1,032,567 $-97,429
2021 $730,590 $526,606 $1,152,181 $203,984
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