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        <PersonNm>XUN-LI WANG</PersonNm>
        <TitleTxt>DIRECTOR (as of 1/24)</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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        <PersonNm>BETH GUNZEL</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>FRANCIS SLAKEY</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>HASSANA HOWE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JANE HOPKINS GOULD</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MARK DOYLE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>RACHEL BURLEY</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>AMY FLATTEN</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CHRISTINE GIACCONE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DYLAN MOULTON</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JEFF LEWANDOWSKI</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KENNEDY JESSICA THOMAS</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SARA CONNERS</PersonNm>
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          <BusinessName>
            <BusinessNameLine1Txt>IENERGIZER APTARA LIMITED</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
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          <USAddress>
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      <ContractorCompensationGrp>
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          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
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          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>FORMIDABLE LLC</BusinessNameLine1Txt>
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          <USAddress>
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        </ContractorAddress>
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      <MembershipDuesAmt>3988893</MembershipDuesAmt>
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      <NoncashContributionsAmt>0</NoncashContributionsAmt>
      <TotalContributionsAmt>9528908</TotalContributionsAmt>
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        <BusinessCd>511120</BusinessCd>
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      <ProgramServiceRevenueGrp>
        <Desc>SCIENTIFIC MEETINGS</Desc>
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      <ProgramServiceRevenueGrp>
        <Desc>PUBLIC AFFAIRS PROGRAMS</Desc>
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      <ProgramServiceRevenueGrp>
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      <ProgramServiceRevenueGrp>
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      <NetGainOrLossInvestmentsGrp>
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        <ProgramServicesAmt>166919</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>164990</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>818702</ProgramServicesAmt>
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        <FundraisingAmt>57</FundraisingAmt>
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        <ProgramServicesAmt>407571</ProgramServicesAmt>
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        <ProgramServicesAmt>2744045</ProgramServicesAmt>
        <ManagementAndGeneralAmt>880456</ManagementAndGeneralAmt>
        <FundraisingAmt>5889</FundraisingAmt>
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        <ProgramServicesAmt>9525986</ProgramServicesAmt>
        <ManagementAndGeneralAmt>457004</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>21347</ProgramServicesAmt>
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        <ProgramServicesAmt>397</ProgramServicesAmt>
        <ManagementAndGeneralAmt>235488</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>174165</ManagementAndGeneralAmt>
        <FundraisingAmt>152</FundraisingAmt>
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      <OtherExpensesGrp>
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        <ProgramServicesAmt>108010</ProgramServicesAmt>
        <ManagementAndGeneralAmt>499963</ManagementAndGeneralAmt>
        <FundraisingAmt>49</FundraisingAmt>
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      <OtherExpensesGrp>
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        <ManagementAndGeneralAmt>52554</ManagementAndGeneralAmt>
        <FundraisingAmt>7257</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>ALLOCATED EXPENSES</Desc>
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      <TotalExpensesPerForm990Amt>90947319</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 4 Intended uses of endowment funds</FormAndLineReferenceDesc>
        <ExplanationTxt>EARNINGS ON ENDOWMENT FUNDS ARE USED TO PROVIDE AWARDS TO DISTINGUISHED INDIVIDUALS AND TRAVEL ASSISTANCE IN THE FIELD OF PHYSICS, AS WELL AS TO PROVIDE A SCHOLARSHIP FOR WOMEN PHYSICISTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2 FIN 48 (ASC 740) footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>APS IS EXEMPT FROM FEDERAL INCOME TAX UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE AND HAS BEEN CLASSIFIED AS AN ORGANIZATION THAT IS NOT A PRIVATE FOUNDATION. APS HAD AN IMMATERIAL AMOUNT OF UNRELATED BUSINESS INCOME FOR THE YEARS ENDED DECEMBER 31, 2024 AND 2023. UNDER ACCOUNTING STANDARDS CODIFICATION (ASC) 740-10, ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES, AN ORGANIZATION MUST RECOGNIZE THE TAX BENEFIT ASSOCIATED WITH TAX POSITIONS TAKEN FOR TAX RETURN PURPOSES WHEN IT IS MORE-LIKELY THAN NOT THAT THE POSITION WILL BE SUSTAINED. APS DOES NOT BELIEVE THERE ARE ANY MATERIAL UNCERTAIN TAX POSITIONS AND; ACCORDINGLY, WILL NOT RECOGNIZE ANY LIABILITY FOR UNRECOGNIZED TAX BENEFITS. APS HAS FILED FOR AND RECEIVED INCOME TAX EXEMPTIONS IN THE JURISDICTIONS WHERE IT IS REQUIRED TO DO SO.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, Line 2(d) Other revenues in audited financial statements not in form 990</FormAndLineReferenceDesc>
        <ExplanationTxt>Net Period Post-Retirement medical Benefit - 97670 Change in post retirement benefits - 320901 Equity Interest in ACP - 453635</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
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      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Central America and the Caribbean</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>500</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>33045</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>257792</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>4685</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>North America (Canada &amp; Mexico only)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>27647</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Russia and Neighboring States</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>62956</RegionTotalExpendituresAmt>
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        <RegionTxt>South America</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>5200</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>South Asia</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>28880</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Sub-Saharan Africa</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Travel assistance, stipends, honorariums, outreach, participant support</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>3250</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>423955</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>423955</TotalSpentAmt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>Central America and the Caribbean</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <RecipientCnt>7</RecipientCnt>
        <CashGrantAmt>5455</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Grants</TypeOfAssistanceTxt>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <RecipientCnt>6</RecipientCnt>
        <CashGrantAmt>3670</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Stipends</TypeOfAssistanceTxt>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <RecipientCnt>8</RecipientCnt>
        <CashGrantAmt>21920</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Recipient Travel</TypeOfAssistanceTxt>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>1774</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Grants</TypeOfAssistanceTxt>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>1511</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Child Care Grants</TypeOfAssistanceTxt>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
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        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>North America (Canada &amp; Mexico only)</RegionTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Grants</TypeOfAssistanceTxt>
        <RegionTxt>North America (Canada &amp; Mexico only)</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>2100</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Outreach Grants</TypeOfAssistanceTxt>
        <RegionTxt>North America (Canada &amp; Mexico only)</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Stipends</TypeOfAssistanceTxt>
        <RegionTxt>North America (Canada &amp; Mexico only)</RegionTxt>
        <RecipientCnt>12</RecipientCnt>
        <CashGrantAmt>8752</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Recipient Travel</TypeOfAssistanceTxt>
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        <RecipientCnt>12</RecipientCnt>
        <CashGrantAmt>10619</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>South America</RegionTxt>
        <RecipientCnt>11</RecipientCnt>
        <CashGrantAmt>5200</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>South Asia</RegionTxt>
        <RecipientCnt>22</RecipientCnt>
        <CashGrantAmt>20361</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Grants</TypeOfAssistanceTxt>
        <RegionTxt>South Asia</RegionTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>3100</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Meeting Fee Waivers</TypeOfAssistanceTxt>
        <RegionTxt>South Asia</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>280</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Stipends</TypeOfAssistanceTxt>
        <RegionTxt>South Asia</RegionTxt>
        <RecipientCnt>9</RecipientCnt>
        <CashGrantAmt>3639</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel</TypeOfAssistanceTxt>
        <RegionTxt>South Asia</RegionTxt>
        <RecipientCnt>7</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Honorariums</TypeOfAssistanceTxt>
        <RegionTxt>Sub-Saharan Africa</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>400</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Grants</TypeOfAssistanceTxt>
        <RegionTxt>Sub-Saharan Africa</RegionTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>2850</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
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        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Grants</TypeOfAssistanceTxt>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>3997</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Outreach Grants</TypeOfAssistanceTxt>
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        <RecipientCnt>1</RecipientCnt>
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      <ForeignIndividualsGrantsGrp>
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        <RecipientCnt>27</RecipientCnt>
        <CashGrantAmt>97886</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Recipient Travel</TypeOfAssistanceTxt>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <RecipientCnt>13</RecipientCnt>
        <CashGrantAmt>18724</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Participant Support</TypeOfAssistanceTxt>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>117095</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Participant Support</TypeOfAssistanceTxt>
        <RegionTxt>Russia and Neighboring States</RegionTxt>
        <RecipientCnt>15</RecipientCnt>
        <CashGrantAmt>62956</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>false</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>false</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>false</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>false</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>false</ForeignPartnershipInd>
      <BoycottCountriesInd>false</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule F, Part I, Line 2 Procedures for monitoring use of grant funds</FormAndLineReferenceDesc>
        <ExplanationTxt>RECIPIENTS ARE SELECTED BASED UPON CRITERIA DETERMINED BY OVERSIGHT COMMITTEES. RECIPIENTS PROVIDED LUMP SUM PAYMENTS AT THE BEGINNING OF THE GRANT PERIOD ARE EXPECTED TO SUBMIT FINAL REPORTS DETAILING EXPENDITURES. FUNDS GIVEN ON A "REIMBURSEMENT" BASIS REQUIRE THE RECIPIENT TO PROVIDE APS WITH AN EXPENSE REPORT THAT INCLUDES RECEIPTS FOR HIS/HER EXPENDITURES. IN ADDITION, THE FORMAL PRIZE AND AWARDS ARE BASED UPON PRIOR ACCOMPLISHMENTS AND ARE APPROVED BY THE COUNCIL OF REPRESENTATIVES BEFORE BEING GIVEN TO DISTINGUISHED PHYSICISTS. THE GRANTS OTHER THAN PRIZE AND AWARDS ARE BASED UPON REVIEW BY SENIOR STAFF AND COMMITTEES.</ExplanationTxt>
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          <BusinessNameLine1Txt>Wested</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO Box 889001</AddressLine1Txt>
          <CityNm>Los Angeles</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>900889001</ZIPCd>
        </USAddress>
        <RecipientEIN>943233542</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>222817</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of Maryland</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>7700 Baltimore Ave</AddressLine1Txt>
          <CityNm>College Park</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>20742</ZIPCd>
        </USAddress>
        <RecipientEIN>526002033</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>202536</CashGrantAmt>
        <PurposeOfGrantTxt>Programs - Sub Awards</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>American Mathematical Society</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>201 Charles Street</AddressLine1Txt>
          <CityNm>Providence</CityNm>
          <StateAbbreviationCd>RI</StateAbbreviationCd>
          <ZIPCd>02904</ZIPCd>
        </USAddress>
        <RecipientEIN>050264797</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>195167</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Florida International University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>11200 Sw 8Th St Pc 230</AddressLine1Txt>
          <CityNm>Miami</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33199</ZIPCd>
        </USAddress>
        <RecipientEIN>237047106</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>156137</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Board of Regents - Univ of WI Madison</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>21 N Park St</AddressLine1Txt>
          <CityNm>Milwaukee</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>532780538</ZIPCd>
        </USAddress>
        <RecipientEIN>391805963</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>122448</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>American Astronomical Society</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1667 K Street Nw</AddressLine1Txt>
          <CityNm>Washington</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20006</ZIPCd>
        </USAddress>
        <RecipientEIN>210735173</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>78202</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of Central Florida</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>12201 Research Pkwy</AddressLine1Txt>
          <CityNm>Orlando</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>32826</ZIPCd>
        </USAddress>
        <RecipientEIN>592924021</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>68385</CashGrantAmt>
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        <RecipientEIN>941156365</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>55000</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>University of Southern California</BusinessNameLine1Txt>
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          <CityNm>Los Angeles</CityNm>
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        <RecipientEIN>951642394</RecipientEIN>
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        <CashGrantAmt>54094</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
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          <BusinessNameLine1Txt>Rochester Institute of Technology</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>7 Lomb Memorial Drive</AddressLine1Txt>
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        <RecipientEIN>160743140</RecipientEIN>
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        <CashGrantAmt>51677</CashGrantAmt>
        <PurposeOfGrantTxt>Sub Awards</PurposeOfGrantTxt>
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      <RecipientTable>
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          <StateAbbreviationCd>CO</StateAbbreviationCd>
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        <RecipientEIN>846000555</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>50724</CashGrantAmt>
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      <RecipientTable>
        <RecipientBusinessName>
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        <RecipientEIN>952544535</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>40767</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Clemson University</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>391 College Ave Suite 302</AddressLine1Txt>
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          <StateAbbreviationCd>SC</StateAbbreviationCd>
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        <CashGrantAmt>33372</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
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        <RecipientEIN>530196572</RecipientEIN>
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        <CashGrantAmt>33000</CashGrantAmt>
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      <RecipientTable>
        <RecipientBusinessName>
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        <USAddress>
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          <StateAbbreviationCd>MI</StateAbbreviationCd>
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        <RecipientEIN>386006309</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>32894</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
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        <USAddress>
          <AddressLine1Txt>129 Lake Street 426</AddressLine1Txt>
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          <StateAbbreviationCd>MA</StateAbbreviationCd>
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        <RecipientEIN>042103545</RecipientEIN>
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        <CashGrantAmt>31929</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Montana State University</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>309 Montana Hall Box 172470</AddressLine1Txt>
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        <RecipientEIN>816010045</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>31500</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of Pennsylvania</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>209 S 33rd St</AddressLine1Txt>
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          <StateAbbreviationCd>PA</StateAbbreviationCd>
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        <RecipientEIN>231352685</RecipientEIN>
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        <CashGrantAmt>27600</CashGrantAmt>
        <PurposeOfGrantTxt>Travel - Participant Support</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>West Virginia University Research Corporation</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>One Waterfront Place PO Box 6005</AddressLine1Txt>
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          <StateAbbreviationCd>WV</StateAbbreviationCd>
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        <RecipientEIN>550665758</RecipientEIN>
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        <CashGrantAmt>24517</CashGrantAmt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of Oregon</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>PO Box 3237</AddressLine1Txt>
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          <StateAbbreviationCd>OR</StateAbbreviationCd>
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        <CashGrantAmt>22500</CashGrantAmt>
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      <RecipientTable>
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          <StateAbbreviationCd>DC</StateAbbreviationCd>
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        <CashGrantAmt>20682</CashGrantAmt>
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      <RecipientTable>
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          <BusinessNameLine1Txt>Oregon State University</BusinessNameLine1Txt>
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        <RecipientBusinessName>
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      <RecipientTable>
        <RecipientBusinessName>
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          <StateAbbreviationCd>IL</StateAbbreviationCd>
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        <CashGrantAmt>9866</CashGrantAmt>
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      <RecipientTable>
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        <GrantTypeTxt>Prizes &amp; Awards - Certificates</GrantTypeTxt>
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        <GrantTypeTxt>Prizes &amp; Awards - Receipient Travel</GrantTypeTxt>
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        <GrantTypeTxt>Travel - Participant Support</GrantTypeTxt>
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        <GrantTypeTxt>Sub Awards</GrantTypeTxt>
        <RecipientCnt>22</RecipientCnt>
        <CashGrantAmt>136036</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule I, Part I, Line 2 Procedures for monitoring use of grant funds</FormAndLineReferenceDesc>
        <ExplanationTxt>RECIPIENTS ARE SELECTED BASED UPON CRITERIA DETERMINED BY OVERSIGHT COMMITTEES. RECIPIENTS PROVIDED LUMP SUM PAYMENTS AT THE BEGINNING OF THE GRANT PERIOD ARE EXPECTED TO SUBMIT FINAL REPORTS DETAILING EXPENDITURES. FUNDS GIVEN ON A "REIMBURSEMENT" BASIS REQUIRE THE RECIPIENT TO PROVIDE APS WITH AN EXPENSE REPORT THAT INCLUDES RECEIPTS FOR HIS/HER EXPENDITURES. IN ADDITION, THE FORMAL PRIZES AND AWARDS ARE BASED UPON PRIOR ACCOMPLISHMENTS AND ARE APPROVED BY THE COUNCIL OF REPRESENTATIVES BEFORE BEING GIVEN TO DISTINGUISHED PHYSICISTS. SUBAWARDS OF FEDERAL GRANTS ARE PREAPPROVED BY THE APPLICABLE FEDERAL AGENCY AND A MEMORANDUM OF UNDERSTANDING IS EXECUTED WITH THE RECIPIENT CITING THE FEDERAL REQUIREMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ" softwareId="24020961" softwareVersionNum="2024v5.1">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>true</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>true</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>true</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JONATHAN BAGGER</PersonNm>
        <TitleTxt>CHIEF EXECUTIVE OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>607147</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>70000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>27600</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>32259</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>737006</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JEANETTE RUSSO</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>154718</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>2000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>13100</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>44173</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>213991</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>RACHEL BURLEY</PersonNm>
        <TitleTxt>CHIEF PUBLICATIONS OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>334222</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>60000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>27600</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>44173</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>465995</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JANE HOPKINS GOULD</PersonNm>
        <TitleTxt>CFOO</TitleTxt>
        <BaseCompensationFilingOrgAmt>395087</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>10000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>27600</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>23699</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>456386</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARK DOYLE</PersonNm>
        <TitleTxt>CHIEF INFORMATION OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>321861</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>26306</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>32259</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>385426</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>FRANCIS SLAKEY</PersonNm>
        <TitleTxt>CHIEF EXTERNAL AFFAIRS OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>314356</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>25859</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>44173</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>389388</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BETH GUNZEL</PersonNm>
        <TitleTxt>CHIEF HUMAN RESOURCES OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>283302</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>10000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>500</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>23887</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>317689</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>HASSANA HOWE</PersonNm>
        <TitleTxt>CHIEF EXPERIENCE &amp; ENGAGEMENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>256043</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20800</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>15881</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>297724</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DYLAN MOULTON</PersonNm>
        <TitleTxt>GLOBAL SALES DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>217665</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>35000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20200</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>44173</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>317038</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>AMY FLATTEN</PersonNm>
        <TitleTxt>DIR OF INTERNATIONAL AFFAIRS</TitleTxt>
        <BaseCompensationFilingOrgAmt>226523</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>11226</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2000</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>19020</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16130</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>274899</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KENNEDY JESSICA THOMAS</PersonNm>
        <TitleTxt>EXECUTIVE EDITOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>216553</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>18517</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>44173</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>284243</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRISTINE GIACCONE</PersonNm>
        <TitleTxt>DIR OF JOURNAL OPERATIONS</TitleTxt>
        <BaseCompensationFilingOrgAmt>247021</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>9745</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2500</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20470</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>279736</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JEFF LEWANDOWSKI</PersonNm>
        <TitleTxt>DIR OF PUBLISHING</TitleTxt>
        <BaseCompensationFilingOrgAmt>201807</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>7500</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>17524</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>44173</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>271004</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SARA CONNERS</PersonNm>
        <TitleTxt>DIRECTOR OF SPECIAL PROJECTS</TitleTxt>
        <BaseCompensationFilingOrgAmt>60712</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>152327</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>5018</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>5332</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>223389</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4a Severance or change-of-control payment</FormAndLineReferenceDesc>
        <ExplanationTxt>SARA CONNERS RECEIVED A SEVERANCE PAYMENT ON 5/17/2024 OF $117,512.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4b Supplemental nonqualified retirement plan</FormAndLineReferenceDesc>
        <ExplanationTxt>SECTION 457(F) DEFERRED COMPENSATION PLAN - JONATHAN BAGGER $50,000, JANE HOPKINS GOULD $45,000.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 5a Compensation contingent on revenues of the organization</FormAndLineReferenceDesc>
        <ExplanationTxt>APS has a sales commission program for a select number of individuals based on meeting or exceeding budget goals and related customer and product metrics. All payments are reviewed by management and are designed to align with IRS and other related regulations and guidance and in furtherance of the organization's exempt purpose.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="24020961" softwareVersionNum="2024v5.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4a-4c Description of program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 9,346,951 including grants of $ 255,727)(Revenue $ 5,262) PHYSICS RESEARCH PROGRAMS: MEMBERSHIP OPERATIONS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4a-4c Description of program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 850,402 including grants of $ 807,615) PHYSICS RESEARCH PROGRAMS: PRIZES AND AW</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>APS HAS 50,389 MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>SOCIETY MEMBERS ELECT THE PRESIDENTIAL LINE (PRESIDENT, PRESIDENT-ELECT, VICE PRESIDENT, AND PAST PRESIDENT) WHO SIT UPON THE BOARD OF DIRECTORS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MEMBERS OF THE GOVERNING BODY RECEIVE A COPY OF THE FORM 990 BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>EMPLOYEES AND GOVERNING BODY MEMBERS ARE ASKED TO COMPLETE A CONFLICT OF INTEREST REPORT ANNUALLY THAT IS REVIEWED BY THE CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL &amp; OPERATIONS OFFICER FOR POTENTIAL CONFLICTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a Process to establish compensation of top management official</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE APPROVES THE ANNUAL COMPENSATION OF THE CHIEF EXECUTIVE OFFICER. MARKET DATA AND BENCHMARKING BASED ON KNOWLEDGE, SKILLS AND COMPETENCIES; EXPERIENCE; INTERNAL EQUITY AND PERFORMANCE HISTORY ARE CONSIDERED WHEN DETERMINING COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b Process to establish compensation of other employees</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE APPROVES THE ANNUAL COMPENSATION OF THE OTHER OFFICERS. COMPENSATION FOR KEY EMPLOYEES IS DETERMINED BY THE CHIEF EXECUTIVE OFFICER. MARKET DATA AND BENCHMARKING BASED ON KNOWLEDGE, SKILLS AND COMPETENCIES; EXPERIENCE; INTERNAL EQUITY AND PERFORMANCE HISTORY ARE CONSIDERED WHEN DETERMINING COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>THE APS GOVERNING DOCUMENTS, FINANCIAL STATEMENTS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE ONLINE AT THE ORGANIZATION'S WEBSITE. THE FINANCIAL STATEMENTS ARE INCLUDED IN THE APS ANNUAL REPORT. THE DOCUMENTS ARE ALSO AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g Other Fees</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTANT FEES - Total Expense: 13679351, Program Service Expense: 10746689, Management and General Expenses: 2871552, Fundraising Expenses: 61110;</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9 Other changes in net assets or fund balances</FormAndLineReferenceDesc>
        <ExplanationTxt>NET PERIODIC POST-RETIREMENT MEDICAL BENEFIT EXPENSE - 320901; CHANGE IN POST-RETIREMENT MEDICAL BENEFITS - 97670; EQUITY INTEREST IN ACP - 453635; Total - 872206;</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>