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        <PersonNm>Larry Fishbein</PersonNm>
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        <PersonNm>Roy Levenson</PersonNm>
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        <PersonNm>Kevin Ruthen</PersonNm>
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        <PersonNm>Kevin Steiner</PersonNm>
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        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>First class travel - Due to a medical condition, first class travel was made available to one employee. Gross-up payments - If an employee reaches the IRS limitation for employer retirement contributions, the organization provides a gross up payment equivalent to the difference between the max amount and the amount that would have been contributed if there were no limitations.</ExplanationTxt>
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        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION REVIEW &amp; APPROVAL PROCESS CEO: AIP's Board of Directors has designated a Compensation Committee to manage compensation of AIP's CEO. The Charter of the Compensation Committee provides for a procedure that is consistent with applicable law and best practices. The Charter provides that the Committee "shall make a recommendation to the Board of Directors with respect to the compensation for the Chief Executive Officer." The Compensation Committee obtains data as to comparable compensation for the Chief Executive Officer, recommends terms of the CEO's employment agreements, and determines reasonable compensation level. The committee submits to the Board a recommendation for the CEO's compensation for each fiscal year. The Board of Directors makes the final decision on the CEO's compensation.</ExplanationTxt>
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        <FormAndLineReferenceDesc>SCHEDULE J, PART I, LINE 4A:</FormAndLineReferenceDesc>
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        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>AIPs mission is to advance, promote and serve the physical sciences for the benefit of humanity. AIP offers programs, products, and services that 1) advance and distribute the knowledge of the physical sciences and its applications, 2) enhance and cultivate the physical sciences disciplines, 3) enable and foster collaborative efforts among stakeholders in the physical sciences 4) promote the physical sciences to the public, government officials, agencies and the media.</ExplanationTxt>
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        <ExplanationTxt>Program services: AIP Publishing LLC (AIPP) is a single member, not-for-profit, limited liability company owned by the American Institute of Physics (AIP). AIPP is a scholarly publisher in the physical and related sciences, providing the global science community with a comprehensive collection of cited, peer-reviewed scientific papers and other information. Accessed by researchers at nearly 4,000 institutions worldwide, AIPPs portfolio of 20 journals includes prestigious titles such as Applied Physics Letters, Journal of Applied Physics, The Journal of Chemical Physics, and the AIP Conference Proceedings. AIPP supports the scientific and educational mission of AIP through its scholarly publishing activities and also works with several of AIPs member societies and other publishing partners to help advance their publishing mission. Physics Today, AIP's flagship magazine, provides a unifying influence for the physical sciences through its broad and authoritative coverage of scientific research, news, and opinions of relevance to the global scientific community. The monthly magazine is received by the individual members of AIPs ten constituent societies, libraries and institutions around the world, and other interested individuals. The Physics Today website publishes additional material and is updated daily. Physics Today also has a strong presence on social media with, for example, more than 3 million followers on Facebook.</ExplanationTxt>
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        <ExplanationTxt>AIP Programs: In keeping with its mission to advance, promote and serve the physical sciences for the benefit of humanity, AIP offers unique services, products, and expertise in: Education and Student Services, History of Physics, Archival Library, Media and Government Relations, Magazine Publishing and Employment Services for Science and Engineering Professionals, Statistical Research, and Industry Outreach. With the purpose of promoting the progress and relevance of physical sciences and to advance their contributions and responsiveness to society, AIP generates, communicates and popularizes knowledge, unique expertise and authoritative information. The Society of Physics Students (SPS) is a scientific society for physics undergraduates and their mentors, with more than 4200 members and 818 SPS chapters nationwide and 33 international chapters. SPS exists to support departments and the undergraduate physics community. 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The AIP History Programs ensure that the heritage of the physical sciences is safeguarded and that the public can understand how physical science has been central to the history of the modern world. The history of the physical sciences offers a rich framework of exciting past achievements and valuable guidance for current and future generations. The Niels Bohr Library and archives recently acquired a transformative collection of rare books and publications containing the first published accounts of the most important discoveries in physical sciences over the past four centuries, featuring works by Ptolemy, Galileo, Huygens, Halley, Neuton, Curie, LaPlace, and more. AIP's Inside Science is an editorially independent, news outlet that produces quality, accurate STEM (science-technology- education-mathematics) news. The content is available for syndication by mainstream news organization, including those with reduced or non-existent science reporters. Inside Science includes four areas: news articles, videos, guest columns and an editors blog. The AIP Media Services Team works with AIP Publishing, AIP Member Societies and Allied Organizations to produce and promote timely and accurate public dissemination of scientific advances and knowledge. Media Services staff press rooms, organize press conferences and other outreach events and produce hundreds of written stories, videos, images, infographs and other forms of public information for the media and general public every year. The AIP Statistical Research Center collects and disseminates reliable and timely data on education and employment in physical sciences. Data are published in the areas of enrollment, degrees, demographics, representation of women and minorities, employment by economic sector, and salary information for physics and astronomy bachelors, masters and PhD holders. The center also provides survey expertise and contracts with member societies and outside organizations to carry out targeted studies. The AIP Industrial Physics Forum (IPF) brings together industrial and applied scientists, with research managers and leaders from industry, academia, and government, with the goal of advancing the contributions of physics and physicist to economic growth. IPF meetings feature invited speaker sessions that compliment AIP member society meetings. Experts discuss new applications of physics, product developments, and other opportunities for science in todays economic environment. The IPF offers participants opportunities to learn about innovations in the field, to interface with the people driving them, and to strategize about directions for future economic and scientific progress. AIP Venture Partnership Fund (VPF) uses a portion of its strategic reserves as a board-designated fund, the proceeds of which are used to fund innovative projects between one or more-member societies and AIP. For a member society to receive this grant, the society must submit a proposal to the VPF Committee. The VPF committee is made up of independent members. It's through their review process that grants are awarded.</ExplanationTxt>
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        <ExplanationTxt>The member society representatives are not often called upon to take action in their role as the voting members of AIP. Responsibilities of the member society representitive include: -approving member society designated directors to the AIP Board, or their re-appointment for a second term. -approving amendments to the bylaws. -admitting new member societies to the Federation. -making a final decision in the event that AIP ever considers a fundamental change in its structure such as a merger, consolidation, dissolution or sale of substantially all its assets.</ExplanationTxt>
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        <ExplanationTxt>Form 990 Review Process: The form 990 is prepared and reviewed by the organizations independent accounting firm with the assistance of AIPs management. The form 990 is then reviewed by the Audit Committee and then made available to all members of the Board of Directors prior to filing.</ExplanationTxt>
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        <ExplanationTxt>The consolidated AIP consists of the parent corporation (AIP) and its wholly owned subsidiary AIP Publishing LLC (AIPP). Due to the nature of the relationship between AIP and AIPP, each organization maintains and managers its own conflict of interest (COI) policy. At AIP, annually, a conflict of interest (COI) disclosure is completed by all AIP covered persons (Officers, directors and key persons). No AIPP employees are AIP covered persons. The Chair of the Audit Committee and the Corporate Secretary review the disclosures, evaluate if there are conflicts of interest that need to be managed, and report their findings to the Audit Committee. The audit Committee then determines the next steps with respect to managing any conflicts of interest. The final results of the disclosure reviews and any management plans are reported to individual directors and to the Board. AIPs COI policy is made available to the public through AIPs website, located at www.aip.org/aip/leadership. At AIPP, Annually, all members of their Board of Managers, all officers of the company, and key employees confirm that they have read an understand and agree to comply with AIPPs COI policy. All other AIPP employees are not required to confirm annually. The CFO of AIPP certifies annually to the CFO of AIP that AIPP is regularly and consistently monitoring and enforcing compliance with the AIPP COI policy. AIPP does not make its COI policy available to the public.</ExplanationTxt>
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        <ExplanationTxt>COMPENSATION REVIEW &amp; APPROVAL PROCESS CEO: AIP's Board of Directors has designated a Compensation Committee to manage compensation of AIP's CEO. The Charter of the Compensation Committee provides for a procedure that is consistent with applicable law and best practices. The Charter provides that the Committee "shall make a recommendation to the Board of Directors with respect to the compensation for the Chief Executive Officer." The Compensation Committee obtains data as to comparable compensation for the Chief Executive Officer, recommends terms of the CEO's employment agreements, and determines reasonable compensation level. The committee submits to the Board a recommendation for the CEO's compensation for each fiscal year. The Board of Directors makes the final decision on the CEO's compensation.</ExplanationTxt>
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        <ExplanationTxt>Compensation review and approval process: Officers: A compensation consulting firm is retained to periodically review the compensation ranges of the Officers. The Senior Director of Human Resources presents this information to the compensation committee for information purposes only.</ExplanationTxt>
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        <ExplanationTxt>Other organization documents made available to the public: The AIP website has a governance section that includes corporation bylaws. Also on the website are annual reports that include financial highlights for AIP. The organizations conflict of interest policy and Form 990 are also available on the website, located at www.aip.org/aip/annual report.</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Other changes in net assets or fund balances: Rare Books: ($5,027,415) Net Periodic Postretirement Cost: ($ 41,478) Other: ($ 520) Total: ($5,069,413)</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>AIPP produces a single audit report prepared by the same audit firm used by AIP. The single audit report is incorporated into the consolidated financial statements of AIP.</ExplanationTxt>
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      <SharingOfFacilitiesInd>false</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AIP GLOBAL INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>P</TransactionTypeTxt>
        <InvolvedAmt>329077</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE R, PART III, LINE 1, COLUMN A:</FormAndLineReferenceDesc>
        <ExplanationTxt>NAME, ADDRESS &amp; EIN OF RELATED ORGANIZATION NEW CRYSTALLOGRAPHY JOURNAL, LLC 1305 WALT WHITMAN ROAD, SUITE 300 MELVILLE, NY 11747 EIN: 90-0988084</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE R, PART IV, LINE 1, COLUMN D:</FormAndLineReferenceDesc>
        <ExplanationTxt>FOR THE CALENDAR YEAR 2018, AIP PUBLISHING LLC, A DISREGARDED ENTITY WITH RESPECT TO AIP, OWNED 100% OF AIP GLOBAL.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>