Institute of Nuclear Materials Management
Public records raise at least one point you should look into before giving.
What it says it does
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.
- Income
- $2.1 million
- Spending
- $1.7 million
- Employees
- 0
- Volunteers
- 100
Source: Form 990 for the year ending September 30, 2025, filed with the Internal Revenue Service. How we rate
Financial health
We do not score finances when yearly spending is very small or the return has too little detail. The ratios stop meaning much at that size.
Source: Form 990 for the year ending September 30, 2025, filed with the Internal Revenue Service. How we rate
Governance
This return does not answer enough of the governance questions to score.
Source: Form 990 for the year ending September 30, 2025, filed with the Internal Revenue Service. How we rate
Impact evidence
Describes programs. Its tax return describes what it does but we have found no measurable results in it.
Programs described in its return (3)
- $1.3 million spent. 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. 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.
- $6,731 spent. 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.
- $20,560 spent. 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.
Source: Form 990 for the year ending September 30, 2025, filed with the Internal Revenue Service. How we rate
Legitimacy checks
Is it registered with the IRS? Passed.
Listed in the IRS master file of tax-exempt organizations as a 501(c)(6) business league.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.
Has the IRS revoked its tax-exempt status? Passed.
Not on the IRS automatic revocation list.
Source: Automatic revocation of exemption list, Internal Revenue Service, file dated September 30, 2026.
Are donations tax-deductible? Caution.
The IRS master file records contributions to this 501(c)(6) business league as not deductible.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.
Is it keeping up with its IRS filings? Passed.
Most recent return on file covers the year ending September 2025.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.
How long has it been tax-exempt? Passed.
Recognized by the IRS since April 1969.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.
Is it in good standing with state regulators? Passed.
Not on California's list of charities barred from soliciting. Other states are not yet checked.
Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 7, 2026.
Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.