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        <Desc>Communications and Public Education (COMMS). In 2024, amid heightened geopolitical risks and an accelerating new nuclear arms race, NTI ramped up our public outreach work around the risks posed by nuclear weapons. In the lead-up to the Academy Awards in March, we tapped the buzz around Oppenheimer, which told the origin story of nuclear weapons, to remind the public that while the story is history, nuclear weapons are not. Our campaign reached millions as we blanketed Los Angeles with billboards and posters, shared videos, and created media opportunities, all capitalizing on the symmetry of Oppenheimer's 13 Oscar nominations and today's 13,000 nuclear weapons. We invited people to join us to "Make Nukes History," highlighting that they have a role to play in eliminating nuclear weapons. Our open letter in the Los Angeles Times was signed by several Oppenheimer cast and crew members and Hollywood luminaries like Michael Douglas, Jane Fonda, Emma Thompson, Barbra Streisand, and Kristen Stewart. It drew significant attention from CBS Saturday Morning, USA Today, CNN.com, The Guardian and NHK Japanese Television to Variety and Hollywood Reporter. We also placed a large art installation at Los Angeles' famous Grove Farmer's Market, which served as the anchor point for our on-the-ground activities, and our reach on digital and social media rose well past tens of millions of views across TikTok, Instagram, YouTube. NTI Emeritus Board member and former California Governor Jerry Brown joined NTI Co-Chair and CEO Ernest J. Moniz on an op-ed in the LA Times, titled "Oppenheimer's best performance-reminding us we live in dangerous times." A continuing our work to shift political incentives in favor of nuclear risk reduction and eventual elimination, NTI partnered with Ploughshares on a narrative strategy and messaging guide to challenge the dominate narrative that nuclear weapons keep us safe and connect with a supermajority of the U.S. public. It will be released in early 2025. In August, we launched our fourth annual, social media-based #CranesForOurFuture campaign to mark 79 years since the atomic bombings of Hiroshima and Nagasaki. Millions joined the campaign, including artists and cultural icons like Yoko Ono, Michael Douglas, and George Takei; global security leaders; current and former top U.S. officials; and organizations including The Elders, the Carnegie Corporation of New York, and the International Campaign to Abolish Nuclear Weapons. To see posts from the campaign, go to cranesforourfuture.org. Fashion designers also participated, and pieces from The Cranes Collection were worn by model Paris Jackson and influencer Liz Plank at New York Fashion Week. Communications also worked with Hiroshima Governor Hidehiko Yuzaki on an op-ed in The Seattle Times. In mid-September, NTI launched a Nevada-based campaign to highlight opposition to renewed explosive underground nuclear weapons testing. NTI organized a coalition, "Nevadans Against Nuclear Weapons Testing," comprised of business leaders, elected officials, environmental and community groups. Our poll of 600 Nevada voters found strong bipartisan opposition to testing, which would happen in the desert just 65 miles from Las Vegas. Ernest Moniz spoke to the Las Vegas Review-Journal about the campaign and penned an op-ed in The Nevada Independent, noting that if the United States breaks a three-decade moratorium on underground explosive testing, it could accelerate a new nuclear arms race.</Desc>
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        <Desc>Nuclear Materials Security (NMS):We built powerful coalitions to prevent the spread of nuclear weapons. In September, NTI, the Clean Air Task Force, and the Energy Futures Initiative Foundation launched the Nuclear Scaling Initiative (NSI), to promote the safe and secure expansion of nuclear energy. This grant will enable the three organizations to ensure that the scale-up of nuclear energy does not lead to more nuclear weapons. In November, NSI participated in COP29 in Azerbaijan, where we hosted events and met with global stakeholders to emphasize the importance of nonproliferation in nuclear energy. In September NTI, the Carnegie Endowment for International Peace, and the Belfer Center for Science and International Affairs at the Harvard Kennedy School jointly launched "The Task Force on Nuclear Proliferation and U.S. National Security." This bipartisan Task Force, which is comprised of former senior U.S. government officials and experts, is developing a report that identifies recommendations for how the United States can prevent the spread of nuclear weapons. Separately, NTI and the Center for Energy and Security Studies, a Russian think tank, hosted a series of virtual workshops that brought together American and Russian experts and former government officials to address risks to the nonproliferation regime. We strengthened global nuclear security through comprehensive analysis and by convening leaders to commit to concrete actions. In January, NTI and China's Arms Control and Disarmament Association (CACDA) held a Track 2 dialogue on nuclear security in Beijing, where participants shared perspectives on nuclear security trends and opportunities. In May, NTI participated in the International Atomic Energy Agency's International Conference on Nuclear Security (ICONS)-a once-every-four-year ministerial conference that shapes international nuclear security objectives. At ICONS, NTI promoted recommendations from our 2023 Nuclear Security Index to identify specific steps countries can take to improve nuclear security and launched its new report, Facilities in Times of Crisis, which promotes pathways for mitigating security risks at nuclear facilities during human-created or natural crises. To prepare for ICONS, NTI also hosted our 17th Global Dialogue on Nuclear Security Priorities with government officials, international organization representatives, and top experts to discuss the current nuclear security landscape and strategies to bolster it. We advanced international efforts to verify nuclear disarmament. In June, NTI and the U.S. State Department met with representatives from more than 25 countries in Geneva to celebrate the 10-year anniversary of the International Partnership for Nuclear Disarmament Verification (IPNDV) and discuss progress and challenges to effective verification. IPNDV works to imagine the technologies and methods necessary for future multilateral arms control efforts to verify the elimination of nuclear weapons. Our Gender Champions in Nuclear Policy (GCNP) network helped build a more diverse, inclusive, and equitable nuclear policy field. In 2024, GCNP added four organizations to its membership roster, totaling 86 organizations across four continents. GCNP also issued a microgrant supporting two nuclear security workshops for undergraduate women in Southeast Asia. GCNP is a leadership network of heads of organizations who become Gender Champions by pledging to advance gender equity.</Desc>
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        <ContractorAddress>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>126575</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <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>Each year, NTI participates in a field-wide compensation study, and periodically engages a consultant to perform a compensation study and to benchmark NTI's compensation levels. These studies are used to inform compensation decisions. Additionally, NTI's Board of Directors has a Compensation Committee whose members may not include current or former directors who are also salaried senior executives of NTI. Annually, the Compensation Committee reviews the performance of NTI's senior executives, recommends to the full Board its determination of compensation and benefits of the CEO, President, the highest-ranking Vice President, and the Treasurer. The Compensation Committee also determines the annual salary and benefits of NTI's other officers.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>Lynn Rusten, VP Global Nuclear Policy Program received $205,500 in severance at 12/31/2024</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 7</FormAndLineReferenceDesc>
        <ExplanationTxt>Bonuses</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="R000010" softwareId="24021167" softwareVersionNum="v1.00">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>Sam Nunn</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>OFFICER</RelationshipDescriptionTxt>
        <TransactionAmt>178747</TransactionAmt>
        <TransactionDesc>Independent contractor</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <PersonNm>Page Stoutland</PersonNm>
        </NameOfInterested>
        <RelationshipDescriptionTxt>FORMER OFFICER</RelationshipDescriptionTxt>
        <TransactionAmt>126575</TransactionAmt>
        <TransactionDesc>Independent contractor</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="R000011" softwareId="24021167" softwareVersionNum="v1.00">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <NoncashContributionsRptF990Amt>7042908</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <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="24021167" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>- One of NTI's Board members is the daughter of one of NTI's Co-Chairs. NTI's Corporate Secretary is married to the Board member who is a daughter of one of NTI's Co-Chairs.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's Form 990 is prepared by its Finance Department. It is reviewed by NTI's Chief Financial Officer, President, CEO, its external auditors, BDO, and by its external legal counsel, Davis Pickren Seydel and Sneed. The Form 990 is also reviewed by NTI's Audit Committee, which reviews the form 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 bylaws 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 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, officers, and staff 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.</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's senior executives, recommends to the full Board its determination of compensation and benefits of the CEO, President, the highest-ranking Vice President, and the Treasurer. The Compensation Committee also determines the annual salary and benefits of NTI's other senior executives.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's website includes links to downloadable copies of 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 ($79,215), Honoraria ($70,726), Temporary help ($24,314), Photography and Video ($167,794), Employee processing costs for Payroll, 401K, and flexible spending ($53,866)and Professional services other than Legal fees, Accounting fees, Compensation of current officers, directors, trustees, and Fundraising fees ($4,159,895.39).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Other changes due to the return of unspent funds from IAEA LEU bank ($1,610,286) and Columbia university</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>