<SEC-DOCUMENT>0001104659-25-078711.txt : 20250814
<SEC-HEADER>0001104659-25-078711.hdr.sgml : 20250814
<ACCEPTANCE-DATETIME>20250814164049
ACCESSION NUMBER:		0001104659-25-078711
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250814
DATE AS OF CHANGE:		20250814

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COMPASS Pathways plc
		CENTRAL INDEX KEY:			0001816590
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				000000000
		STATE OF INCORPORATION:			X0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-92194
		FILM NUMBER:		251220240

	BUSINESS ADDRESS:	
		STREET 1:		3RD FLOOR, 1 ASHLEY ROAD
		STREET 2:		ALTRINCHAM
		CITY:			CHESIRE
		STATE:			X0
		ZIP:			WA14 2DT
		BUSINESS PHONE:		1-716-676-6461

	MAIL ADDRESS:	
		STREET 1:		3RD FLOOR, 1 ASHLEY ROAD
		STREET 2:		ALTRINCHAM
		CITY:			CHESIRE
		STATE:			X0
		ZIP:			WA14 2DT

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Compass Rx Ltd.
		DATE OF NAME CHANGE:	20200701

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Nantahala Capital Management, LLC
		CENTRAL INDEX KEY:			0001472322
		ORGANIZATION NAME:           	
		EIN:				201151760
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		130 MAIN ST.
		STREET 2:		2ND FLOOR
		CITY:			NEW CANAAN
		STATE:			CT
		ZIP:			06840
		BUSINESS PHONE:		203-404-1172

	MAIL ADDRESS:	
		STREET 1:		130 MAIN ST.
		STREET 2:		2ND FLOOR
		CITY:			NEW CANAAN
		STATE:			CT
		ZIP:			06840
</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>
          <!-- Field: Pseudo-Tag; ID: Name; Data: Nantahala Capital Management, LLC -->
          <cik>0001472322</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>American Depositary Shares, each representing one ordinary share, par value of GBP 0.008 per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>06/30/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001816590</issuerCik>
        <issuerName>COMPASS Pathways plc</issuerName>
        <issuerCusip>20451W101</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>33 Broadwick Street</com:street1>
          <com:city>London</com:city>
          <com:stateOrCountry>X0</com:stateOrCountry>
          <com:zipCode>W1F 0DQ</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Nantahala Capital Management, LLC</reportingPersonName>
      <citizenshipOrOrganization>MA</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>5934315.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>5934315.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5934315.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.23</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Wilmot B. Harkey</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>5934315.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>5934315.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5934315.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.23</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Daniel Mack</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>5934315.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>5934315.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>5934315.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.23</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>COMPASS Pathways plc</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>33 Broadwick Street London, UNITED KINGDOM, W1F 0DQ</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>(1) Nantahala Capital Management, LLC ("Nantahala")
(2) Wilmot B. Harkey
(3) Daniel Mack (together the "Reporting Persons")</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>130 Main St.  2nd Floor, New Canaan, Connecticut 06840</principalBusinessOfficeOrResidenceAddress>
        <citizenship>(1) Nantahala is a Massachusetts limited liability company.
(2) Each of Messrs. Harkey and Mack is a citizen of the United States of America.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>As of June 30, 2025, Nantahala may be deemed to be the beneficial owner of 5,934,315 Shares held by funds and separately managed accounts under its control, and as the managing members of Nantahala, each of Messrs. Harkey and Mack may be deemed to be a beneficial owner of those Shares. The 5,934,315 Shares includes 1,754,385 Shares which may be acquired by the Reporting Persons within sixty days through the exercise of warrants.</amountBeneficiallyOwned>
        <classPercent>As of June 30, 2025, each of the Reporting Persons may be deemed to be the beneficial owner of the following percentage of the total number of Shares outstanding:
(1) Nantahala Capital Management, LLC ("Nantahala") : 6.23%
(2) Wilmot B. Harkey: 6.23%
(3) Daniel Mack: 6.23%</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>(1) Nantahala Capital Management, LLC ("Nantahala") :  0 Shares.
(2) Wilmot B. Harkey:  0 Shares.
(3) Daniel Mack: 0 Shares.</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>(1) Nantahala Capital Management, LLC ("Nantahala") :  5,934,315 Shares.
(2) Wilmot B. Harkey:  5,934,315 Shares.
(3) Daniel Mack: 5,934,315 Shares.</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>(1) Nantahala Capital Management, LLC ("Nantahala") :  0 Shares.
(2) Wilmot B. Harkey:  0 Shares.
(3) Daniel Mack: 0 Shares.</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>(1) Nantahala Capital Management, LLC ("Nantahala") :  5,934,315 Shares.
(2) Wilmot B. Harkey:  5,934,315 Shares.
(3) Daniel Mack: 5,934,315 Shares.</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>N</notApplicableFlag>
        <subsidiaryIdentificationAndClassification>Each of Messrs. Harkey and Mack is filing this Schedule 13G as a control person in respect of shares beneficially owned by Nantahala, an investment adviser as described in ss. 240.13d-1(b)(1)(ii)(E).  See Item 4(a).</subsidiaryIdentificationAndClassification>
      </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 acquired and are held in the ordinary course of business and 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 ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Nantahala Capital Management, LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Taki Vasilakis</signature>
        <title>Taki Vasilakis / Chief Compliance Officer</title>
        <date>08/13/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Wilmot B. Harkey</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Wilmot B. Harkey</signature>
        <title>Wilmot B. Harkey</title>
        <date>08/13/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Daniel Mack</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Daniel Mack</signature>
        <title>Daniel Mack</title>
        <date>08/13/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
