<SEC-DOCUMENT>0001997166-25-000004.txt : 20251017
<SEC-HEADER>0001997166-25-000004.hdr.sgml : 20251017
<ACCEPTANCE-DATETIME>20251017151528
ACCESSION NUMBER:		0001997166-25-000004
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251017
DATE AS OF CHANGE:		20251017

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RESEARCH FRONTIERS INC
		CENTRAL INDEX KEY:			0000793524
		STANDARD INDUSTRIAL CLASSIFICATION:	PATENT OWNERS & LESSORS [6794]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				112103466
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-38016
		FILM NUMBER:		251400473

	BUSINESS ADDRESS:	
		STREET 1:		240 CROSSWAYS PARK DR
		CITY:			WOODBURY
		STATE:			NY
		ZIP:			11797-2033
		BUSINESS PHONE:		5163641902

	MAIL ADDRESS:	
		STREET 1:		240 CROSSWAYS PARK DR
		CITY:			WOODBURY
		STATE:			NY
		ZIP:			11797-2033

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Morgan Stephen L.
		CENTRAL INDEX KEY:			0001997166
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		608-257-7181

	MAIL ADDRESS:	
		STREET 1:		33 EAST MAIN STREET
		STREET 2:		SUITE 500
		CITY:			MADISON
		STATE:			WI
		ZIP:			53703
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001997166</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>common stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>09/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000793524</issuerCik>
        <issuerName>RESEARCH FRONTIERS INC</issuerName>
        <issuerCusip>760911107</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>240 CROSSWAYS PARK DR</com:street1>
          <com:city>WOODBURY</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>11797-2033</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(c)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Morgan Stephen L.</reportingPersonName>
      <citizenshipOrOrganization>WI</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>2328690.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>2328690.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>2328690.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <classPercent>6.9</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>RESEARCH FRONTIERS INC</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>240 CROSSWAYS PARK DR, WOODBURY, NEW YORK, 11797-2033</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>John F. Nelson</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>3610 Deerpath Road
Middleton, WI  53562</principalBusinessOfficeOrResidenceAddress>
        <citizenship>United States</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>2,328,690</amountBeneficiallyOwned>
        <classPercent>6.920692</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>2,328,690(1,224,403 owned in personal account and 1,104,287 owned in self-directed IRA account)</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>2,328,690</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
        <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under &amp;#167; 240.14a-11.

</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Morgan Stephen L.</reportingPersonName>
      <signatureDetails>
        <signature>Stephen L. Morgan</signature>
        <title>attoroney</title>
        <date>10/17/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
