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      <SupportingOrgType2Ind>X</SupportingOrgType2Ind>
      <SupportedOrganizationsCnt>1</SupportedOrganizationsCnt>
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          <BusinessNameLine1Txt>AMERICAN OTOLOGICAL SOCIETY INC</BusinessNameLine1Txt>
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        <FormAndLineReferenceDesc>FORM 990 SCHEDULE A PART IV SECTION A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMMON GOVERNANCE SECRETARY TREASURER SIGNS BOTH FORM 990 FOR AMERICAN OTOLOGICAL SOCIETY INC. AND AMERICAN OTOLOGICAL SOCIETY RESEARCH FOUNDATION.</ExplanationTxt>
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          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
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        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ON AUGUST 21, 2006, AOS WAS CLASSIFIED BY THE DEPARTMENT OF THE TREASURY - INTERNAL REVENUE SERVICE (IRS) AS A NON-PROFIT ORGANIZATION, A PUBLIC CHARITY, EXEMPT FROM FEDERAL INCOME TAX, UNDER SECTION 501(C)(3) OF THE IRS CODE. ALSO, ON AUGUST 21, 2006, AOSRF WAS CLASSIFIED BY THE DEPARTMENT OF THE TREASURY - INTERNAL REVENUE SERVICE (IRS) AS A NON-PROFIT ORGANIZATION, A TYPE II SUPPORTING ORGANIZATION IN ACCORDANCE WITH INTERNAL REVENUE CODE SECTION 509(A)(3) EXEMPT FROM FEDERAL INCOME TAX, UNDER SECTION 501(C)(3) OF THE IRS CODE. WHILE AOS AND AOSRF ISSUE CONSOLIDATED FINANCIAL STATEMENTS, EACH ENTITY FILES A SEPARATE TAX-EXEMPT REPORT WITH THE INTERNAL REVENUE SERVICE. AOS AND AOSRF ARE NO LONGER SUBJECT TO U.S. FEDERAL OR STATE EXAMINATIONS BY TAX AUTHORITIES FOR TAX YEARS PRIOR TO 2020.</ExplanationTxt>
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          <BusinessNameLine1Txt>UNIVERSITY OF SOUTHERN CALIFORNIA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1540 ALCAZAR STREET SUITE 204M</AddressLine1Txt>
          <CityNm>LOS ANGELES</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>90033</ZIPCd>
        </USAddress>
        <RecipientEIN>951642394</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT</IRCSectionDesc>
        <CashGrantAmt>65000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>CELLULAR REPROGRAMMING OF PERIPHERAL GLIAL CELLS TO REGENERATE PRIMARY AUDITORY NEURONS</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF IOWA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>200 HAWKINS DR 1843 JPP</AddressLine1Txt>
          <AddressLine2Txt>NEUROSURGERY</AddressLine2Txt>
          <CityNm>IOWA CITY</CityNm>
          <StateAbbreviationCd>IA</StateAbbreviationCd>
          <ZIPCd>52242</ZIPCd>
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        <RecipientEIN>426004813</RecipientEIN>
        <IRCSectionDesc>GOVERNMENT</IRCSectionDesc>
        <CashGrantAmt>80000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>LIFETIME OF THE TIP LINK IN LIVING HAIR CELLS</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>REGENTS OF THE UNIVERSITY OF CALIFORNIA (UCSF)</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2233 POST ST - ROOM 315</AddressLine1Txt>
          <CityNm>SAN FRANCISCO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>94115</ZIPCd>
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        <RecipientEIN>946036493</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>13750</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>CHARACTERIZATION OF RESTING-STATE AND FUNCTIONAL CONNECTIVITY CHANGES IN VESTIBULAR MIGRAINE</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>HARVARD MEDICAL SCHOOL</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>25 SHATTUCK STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02115</ZIPCd>
        </USAddress>
        <RecipientEIN>042103580</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>44000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>CELLULAR REPROGRAMMING OF PERIPHERAL GLIAL CELLS TO REGENERATE PRIMARY AUDITORY NEURONS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF CALIFORNIA LOS ANGELES (UCLA)</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>405 HILGARD AVENUE</AddressLine1Txt>
          <CityNm>LOS ANGELES</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>90095</ZIPCd>
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        <RecipientEIN>956006143</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>44000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>EXPLORING THE SYNAPTIC TRANSCRIPTOME OF VESTIBULAR HAIR CELLS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF MIAMI</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1306 STANFORD DRIVE SUITE 1210</AddressLine1Txt>
          <CityNm>CORAL GABLES</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33146</ZIPCd>
        </USAddress>
        <RecipientEIN>590624458</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>55000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>DEVELOPING A NOVEL TREATMENT MODALITY FOR THE PRESERVATION OF RESIDUAL HEARING POST-COCHLEAR IMPLANTATION</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF SOUTH FLORIDA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>4202 E FOWLER AVE</AddressLine1Txt>
          <CityNm>TAMPA</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33620</ZIPCd>
        </USAddress>
        <RecipientEIN>593102112</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>55000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>DEVELOPMENT OF NON-INVASIVE IMAGING TECHNIQUES FOR ENDOCOCHLEAR POTENTIAL MEASUREMENTS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>TEXAS A&amp;M UNIVERSITY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>400 HARVEY MITCHELL PKY S STE 300</AddressLine1Txt>
          <CityNm>COLLEGE STATION</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>77845</ZIPCd>
        </USAddress>
        <RecipientEIN>746000531</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>44000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>SUB-CELLULAR 3D VIBROMETRY FOR MEASURING COCHLEAR MECHANICS IN THE MOUSE ORGAN OF CORTI</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF ARIZONA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1200 E UNIVERSITY BLVD</AddressLine1Txt>
          <CityNm>TUCSON</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85721</ZIPCd>
        </USAddress>
        <RecipientEIN>742652689</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>5000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>THE EFFECT OF COCHLEAR IMPLANTATION (CI) ON DEPRESSIVE SYMPTOMS IN ADULTS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF IOWA CARVER COLLEGE OF MEDICINE</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>451 NEWTON ROAD 200 MEDICINE</AddressLine1Txt>
          <AddressLine2Txt>ADMINISTRATION BUILDING</AddressLine2Txt>
          <CityNm>IOWA CITY</CityNm>
          <StateAbbreviationCd>IA</StateAbbreviationCd>
          <ZIPCd>52242</ZIPCd>
        </USAddress>
        <RecipientEIN>426004813</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>5000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>THE EFFECT OF ANGIOTENSIN RECEPTOR BLOCKADE USING LOSARTAN IN OTOPROTECTION AGAINST NOISE INDUCED HEARING LOSS</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>HARVARD MEDICAL SCHOOL</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>25 SHATTUCK STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02115</ZIPCd>
        </USAddress>
        <RecipientEIN>042103580</RecipientEIN>
        <IRCSectionDesc>501C3</IRCSectionDesc>
        <CashGrantAmt>5000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>EXPANDING ACCESS: ADAPTING A NOVEL SCHOOL HEARING PROTOCOL TO SCALE ACROSS AMERICA</PurposeOfGrantTxt>
      </RecipientTable>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANT APPLICATIONS ARE REVIEWED TO DETERMINE APPLICATIONS THAT WILL BE MOST BENEFICIAL TO PHYSICIANS AND THEIR UNDERSTANDING OF OTOLOGICAL DISEASES. GRANTEES ARE REQURED TO PROVIDE AN ANNUAL REPORT. FOR A GRANT TO BE RENEWED, THE GRANTEE MUST SHOW PROGRESS AND MUST PRESENT PRELIMINARY RESULTS.</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ACCOUNTANT PREPARES FORM 990 AND ITS RELATED SCHEDULES. A DRAFT IS SENT TO THE ADMINISTRATIVE OFFICE FOR AN INITIAL REVIEW. AFTER THIS INITIAL REVIEW IS COMPLETED, FORM 990 IS FORWARDED TO THE SECRETARY TREASURER FOR HIS OR HER REVIEW AND FORM APPROVAL. ONCE THE SECRETARY TREASURER COMPLETES HIS OR HER REVIEW, THE MEMBERS OF THE COUNCIL ARE ADVISED FROM 990 IS AVAILABLE FOR THEIR REVIEW AND COMMENTS. THIS REVIEW IS AT THE OPTION OF EACH COUNCIL MEMBER AND THIS REVIEW IS NOT MANDATORY. IF THE COUNCIL MEMBERS HAVE NO OBJECTIONS AND OR COMMENTS, FORM 990 IS E-FILED WITH THE DEPARTMENT OF THE TREASURY INTERNAL REVENUE SERVICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE OFFICERS AND COUNCIL MEMBERS ARE PROVIDED A COPY OF THE ORGANIZATION'S CONFLICT OF INTEREST POLICY. IN ADDITION, THE OFFICERS AND COUNCIL MEMBERS ARE REQUIRED TO SIGN A CONFLICT OF INTEREST STATEMENT EACH YEAR. SHOULD AN OFFICER OR A COUNCIL MEMBER HAVE A CONFLICT OF INTEREST, HE OR SHE MUST STATE THAT HE OR SHE HAS A CONFLICT OF INTEREST AND MUST DESCRIBE THE NATURE OF THE CONFLICT. THE INDIVIDUAL MUST ABSTAIN FROM VOTING ON THE MATTER BEING CONSIDERED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS ANNUAL FINANCIAL STATEMENTS, INTERIM FINANCIAL REPORTS, AND THE CONFLICT OF INTEREST POLICY ARE AVAILABLE UPON REQUEST. THE INDIVIDUALS MOST LIKELY TO HAVE AN INTEREST IN REVIEWING THESE DOCUMENTS ARE THE DUES PAYING MEMBERS OF AOS INC. AND THE EDUCATIONAL INSTITUTIONS SEEKING GRANTS. THESE INDIVIDUALS AND INSTITUTIONS KNOW THE CONTACT POINT, THE MAILING ADDRESS, THE EMAIL ADDRESS, AND THE TELEPHONE OF THE ADMINISTRATIVE OFFICE OF THE ORGANIZATION.</ExplanationTxt>
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          <AddressLine1Txt>5830 1ST ST N</AddressLine1Txt>
          <CityNm>ST PETERSBURG</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33703</ZIPCd>
        </USAddress>
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        <PrimaryActivitiesTxt>EDUCATION</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>LINE 10</PublicCharityStatusTxt>
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</Return>