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        <Desc>Communications and Public Education (COMMS). With reports about possible resumption of nuclear weapons testing for the first time since 1992, NTI's Critical Mass project mobilized and expanded the Nevadans Against Nuclear Weapons Testing coalition, organized in 2024. Nevada is the only state with the infrastructure for testing, and the project helped to create a political bulwark against resumed testing, given strong bipartisan opposition to it in the state. NTI worked with business, tourism, conservation, and community groups, as well as veterans and other victims of past nuclear tests to pass a unanimous, bipartisan resolution in the state legislature urging the federal government to uphold the decades-long explosive nuclear weapons testing moratorium. Coalition members, including powerful interests like the Resort Association and Las Vegas Chamber of Commerce, testified for the resolution. After passage, it was transmitted to officials and Nevada's Congressional delegation in Washington. Knowing that popular culture drives public sentiment and ultimately public policy, NTI in 2025 deepened engagement with leaders in film and television to help shape how millions of people understand nuclear threats. We consulted on Academy Award-winning director Kathryn Bigelow's film A House of Dynamite, which depicts what happens when a single, unattributed nuclear-armed missile is launched at the United States. NTI guided a key creative choice: position the nuclear weapon itself, not any single country, as the film's central antagonist. More than 70 million people have seen the film on Netflix. NTI's Ernest J. Moniz published an op-ed in Variety hailing the film as a wake-up call. In 2025, as the world marked 80 years since the atomic bombings of Hiroshima and Nagasaki, NTI recruited more than 50 cultural leaders, including Bigelow, James Cameron, Michael Douglas, Walton Goggins, Julianne Moore, and Olivia Munn-to sign a pledge committing to use their platforms to highlight nuclear weapons risks and imagine a future without them. The letter was published in The New York Times and Variety and garnered widespread media coverage. Academy Award-winning director Cameron then joined Moniz for an hour-long conversation with CNN's Christiane Amanpour about today's nuclear weapon threats and his plans to adapt the book Ghosts of Hiroshima into a film. NTI also launched the Critical Mass Cultural Advisory Council, a group of entertainment industry leaders, including producer Lawrence Bender and Creative Artists Agency's Travis Merriweather committed to nuclear storytelling and risk reduction. In partnership with a group called Popshift, NTI brought together dozens of TV writers and nuclear experts to generate new story ideas and surface unsung heroes who have helped make the world safe from nuclear catastrophe. NTI collected insights from the gathering and released a new storytelling playbook with tips for those working on projects that involve nuclear storylines and launched a pitch contest with Popshift for writers developing shows with nuclear-focused themes. NTI also grew its social media following exponentially in 2025. Starting off the year with a new short-form video program and a viral video, we grew our follower count on Instagram by more than 8,000 percent and our engagements by nearly 20,000 percent. The success of memes and short-form videos is also driving higher views and engagement across all NTI content.</Desc>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Dimtri Kusnezov</PersonNm>
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        <PersonNm>Jaime Yassif</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Joan Rohlfing</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Catherine Gwin</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Hayley Severance</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Douglas Shaw</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Alexandre Tiersky</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Paul Dean</PersonNm>
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        <PersonNm>Sam Nunn</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's travel policy allows for (1) first class travel for certain officers and board members for business purposes; and (2) companion travel for certain officers and board members to attend board meetings. These benefits are not treated as taxable compensation to the recipients.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's Board of Directors has a Compensation Committee that annually reviews the performance of NTI officers. The Committee is responsible for reviewing and approving annual salary and benefits for NTI vice presidents, upon recommendation by the President and Chief Executive Officer. The full Board must approve compensation for President and CEO, CFO and Treasurer, and the highest-ranking Vice President, based on the recommendation presented by the Compensation Committee. To make its decisions, the Compensation Committee relies on third-party benchmarking data as well as an internal Compensation Policy.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 7</FormAndLineReferenceDesc>
        <ExplanationTxt>Bonuses</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="R000010" softwareId="25022730" softwareVersionNum="v1.00">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>Sam Nunn</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Officer</RelationshipDescriptionTxt>
        <TransactionAmt>181617</TransactionAmt>
        <TransactionDesc>Consultant</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="R000011" softwareId="25022730" softwareVersionNum="v1.00">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>99524</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>Food and catering for an event</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>10479</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <Form8283ReceivedCnt>0</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule M, Part I, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Column b represents the number of contributions</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="R000012" softwareId="25022730" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part I, Line 5</FormAndLineReferenceDesc>
        <ExplanationTxt>reflects the total number of individuals who received compensation from NTI at any time during the calendar year and is not a measure of NTI's workforce at year end. This figure includes individuals employed for only a portion of the year, including former employees, temporary workers, and interns, whether full time or part time.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 2a</FormAndLineReferenceDesc>
        <ExplanationTxt>reflects the total number of individuals who received compensation from NTI at any time during the calendar year and is not a measure of NTI's workforce at year end. This figure includes individuals employed for only a portion of the year, including former employees, temporary workers, and interns, whether full time or part time.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's Corporate Secretary is the son-in-law of one of NTI's Co-Chairs.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>The By-laws were amended to consolidate the offices of Chief Executive Officer and President into a single office.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI has a formal written policy governing the review and filing of IRS Form 990. NTI's Finance department prepares the Form 990 and reviews it for accuracy and completeness. The draft Form 990 is then reviewed by the CFO, Senior Vice President and Acting Chief Operating Officer, President and CEO, the organization's independent auditors, and external legal counsel. The Audit Committee of the Board of Directors reviews the Form 990 on behalf of the full Board. The full Board is briefed on the contents of the form and the date of the filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's By-Laws require that a copy of the organization's Conflict of Interest Policy, as adopted by the Board, be furnished to each Board member, officer, and senior staff member. NTI prohibits officers and staff from participating or engaging in any activity for which a conflict of interest exists. Officers and staff also give consideration to perceived conflicts of interest. Board members are recused from decisions of the Board in which a conflict of interest exists. Board members also give consideration to perceived conflicts of interest. Board members are required to disclose to NTI any related party and any reportable affiliates that may apply for, or otherwise be considered by NTI, for a grant or other financial transaction on an annual basis.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's Board of Directors has a Compensation Committee that annually reviews the performance of NTI officers. The Committee is responsible for reviewing and approving annual salary and benefits for NTI vice presidents, upon recommendation by the President and Chief Executive Officer. The full Board must approve compensation for President and CEO, CFO and Treasurer, and the highest-ranking Vice President, based on the recommendation presented by the Compensation Committee. To make its decisions, the Compensation Committee relies on third-party benchmarking data as well as an internal Compensation Policy.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's website includes links to downloadable copies of the Form 990, its annual reports, which include financial data. Other information is available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Expenses included in this line relate to employment recruiting fees ($169,929), Honoraria ($75,650), Temporary help ($6,365), Photography and Video ($53,830), Employee processing costs for Payroll, 401K, and flexible spending ($58,911) and Professional services other than Legal fees, Accounting fees, Compensation of current officers, directors, trustees, and Fundraising fees ($3,566,910).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part X, Line 32</FormAndLineReferenceDesc>
        <ExplanationTxt>Net Assets and Reserves (Supplemental Explanation): NTI maintains financial reserves to support long term programmatic commitments, ensure operational continuity, and manage funding volatility inherent in its mission driven work. These reserves consist primarily of board designated net assets without donor restrictions and are governed by Board approved financial and investment policies. The level of reserves reflects multi year strategic planning, timing differences between multi year pledges, cash receipts and program expenditures, and the need to sustain operations during periods of funding uncertainty. Reserves may be used only in accordance with Board approved policies and are monitored regularly by management and the Board.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Other changes due to the return of unspent funds from Georgia Tech ($3,183.22), Birmingham University ($38,323), and Indonesian Women in Nuclear ($385)</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 10</FormAndLineReferenceDesc>
        <ExplanationTxt>Net Assets and Reserves (Supplemental Explanation): NTI maintains financial reserves to support long term programmatic commitments, ensure operational continuity, and manage funding volatility inherent in its mission driven work. These reserves consist primarily of board designated net assets without donor restrictions and are governed by Board approved financial and investment policies. The level of reserves reflects multi year strategic planning, timing differences between multi year pledges, cash receipts and program expenditures, and the need to sustain operations during periods of funding uncertainty. Reserves may be used only in accordance with Board approved policies and are monitored regularly by management and the Board.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>