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      <FactsAndCircumstancesTestTxt>Public Charity "Facts and Circumstances" Narrative for NTI's 2017 Form 990 Schedule A Filing NTI normally receives a substantial part of its support from the general public. NTI also meets the pertinent factors set forth in Regulations Section 1.170A-9(f)(3) as follows: TEN PERCENT SUPPORT LIMITATION: NTI anticipates that its public support will continue to exceed 10 percent as has historically been the case. ATTRACTION OF PUBLIC SUPPORT: NTI receives support from a number of individual donors, foundations and public charities. NTI maintains a fundraising database of approximately 100,000 supporters who follow NTI's activities and support NTI financially. NTI intends to continue soliciting support through its website, by distributing information useful to the public, and through various forms of solicitations. PERCENTAGE OF FINANCIAL SUPPORT: As noted above, NTI expects that its public support will continue to exceed ten percent, as has historically been the case. Public support percentages over the last several years were: 29.18% in 2009, 25.42% in 2010, 21.86% in 2011, 19.05% in 2012, 15.45% in 2013, 15.89% in 2014, 20.73% in 2015, 20.3% in 2016, and 21.2% in 2017. These amounts exceed the 10 percent facts-and-circumstances test as prescribed in Regulations Section 170(b)(1)(A)(v1). SOURCES OF SUPPORT: NTI anticipates that it will continue to receive support from individual, but unrelated donors, foundations and public charities. REPRESENTATIVE GOVERNING BODY: NTI has an international governing body representative of the broad interests of the public, including various public officials, community leaders and security and policy experts (see a listing in Form 990 Part VII). AVAILABILITY OF PUBLIC FACILITIES OR SERVICES; PUBLIC PARTICIPATION IN PROGRAMS OR POLICIES. To support the public's access to a range of views and information about global threats, NTI offers a number of content rich websites and materials to support public education. The primary website is www.nti.org. The website serves as an information clearing house with unique resources available to all visitors, including a research library with the world's most comprehensive, open-source nonproliferation data collections, profiles of the nuclear, biological and chemical weapons programs of over 40 countries, and issue briefs that offer in-depth analysis on a wide range of international security issues. The website is available free of charge to all interested persons. NTI also conducts regular public outreach and education related to global threats, and provides expert testimony to the US and other governments, as requested. Lastly, NTI-produced documentaries are available online and on DVD, free of charge to interested parties through NTI's website. NTI is not a membership organization.</FactsAndCircumstancesTestTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>Senior NTI staff held meetings with U.S. Congressional Members and Staff to discuss biosecurity funding and the risks of Cesium 137, a radioactive material.</ExplanationTxt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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        <ExplanationTxt>Following is the text of the note to NTI's financial statements regarding NTI's liability for uncertain tax positions under FIN 48: NTI is a tax-exempt organization under Section 501(c)(3) of the Internal Revenue Code, as amended. Management evaluated NTI's tax positions for open tax years (tax years subsequent to 2013) and concluded that a provision for uncertain tax positions is not required. NTI has taken no uncertain tax positions nor are there any related penalties or interest that require adjustment to the accompanying financial statements.</ExplanationTxt>
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        <PersonNm>Deborah Rosenblum</PersonNm>
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        <PersonNm>Carmen MacDougall</PersonNm>
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        <PersonNm>Page Stoutland</PersonNm>
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        <PersonNm>Corey A Hinderstein</PersonNm>
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        <PersonNm>Amy C Hargrett</PersonNm>
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        <PersonNm>Elizabeth Cameron</PersonNm>
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        <PersonNm>Andrew Bieniawski</PersonNm>
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        <PersonNm>Robert E Berls</PersonNm>
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        <PersonNm>Diane G Hauslein</PersonNm>
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        <PersonNm>Catherine O Gwin</PersonNm>
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        <PersonNm>Margarett W Hall</PersonNm>
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        <FormAndLineReferenceDesc>Schedule J, Part I, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI provides to the CEO a per diem for days spent in NTI's Washington office, at a rate tied to the General Services Administration's rate for food and lodging in Washington, D.C., currently $258 per day. Total for 2017 was $6,063</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's Board of Directors has a compensation committee that annually reviews the compensation of, and makes recommendations for, the compensation of the CEO, President, and all NTI Officers. The recommendations are presented to the full Board of Directors for a vote. The compensation committee is comprised of three independent Board members, and per NTI's bylaws, may not include current Board members to whom NTI pays a salary, or Board members to whom NTI formerly paid a salary. In 2017, NTI engaged a consultant to perform a compensation study and to benchmark NTI's compensation levels. The results of the compensation study were used to inform 2018 compensation adjustments.</ExplanationTxt>
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        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
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        <Desc>Office supplies (donated beverages)</Desc>
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        <ExplanationTxt>Column b represents the number of contributions, not items contributed</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d</FormAndLineReferenceDesc>
        <ExplanationTxt>Biological Policy and Programs (BIO) (Expenses of $1,124,128, including grants of $118,364), Scientific and Technical Affairs (STA) (Expenses of $1,359,200), The William J. Perry Project (Expenses of $411,059), and Democracy Project (Expenses of $149,872)</ExplanationTxt>
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        <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>
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      <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 President and CEO, NTI's external auditors, BDO, and by NTI's legal counsel Davis Pickren Seydel and Sneed. The Form 990 is submitted to NTI's Audit Committee, which reviews the form on behalf of the entire Board. The entire Board is briefed on the contents of the form and the date of the filing.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's bylaws require that a copy of NTI'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 might arise. 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>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>NTI's Board of Directors has a compensation committee that annually reviews the compensation of, and makes recommendations for, the compensation of the CEO, President, and all NTI Officers. The recommendations are presented to the full Board of Directors for a vote. The compensation committee is comprised of three independent Board members, and per NTI's bylaws, may not include current Board members to whom NTI pays a salary, or Board members to whom NTI formerly paid a salary. In 2017, NTI engaged a consultant to perform a compensation study and to benchmark NTI's compensation levels. The results of the compensation study were used to inform 2018 compensation adjustments.</ExplanationTxt>
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      <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>
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        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Expenses included in this line relate to employment recruiting fees ($80,166), honoraria ($40,401), temporary help ($4,674), and professional services other than legal fees, accounting fees, and fundraising fees ($2,167,549).</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>This is a rounding adjustment.</ExplanationTxt>
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