<SEC-DOCUMENT>0001964306-25-000003.txt : 20250103
<SEC-HEADER>0001964306-25-000003.hdr.sgml : 20250103
<ACCEPTANCE-DATETIME>20250103170037
ACCESSION NUMBER:		0001964306-25-000003
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250103
DATE AS OF CHANGE:		20250103

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Acumen Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001576885
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				364108129
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-40551
		FILM NUMBER:		25507512

	BUSINESS ADDRESS:	
		STREET 1:		427 PARK ST.
		CITY:			CHARLOTTESVILLE
		STATE:			VA
		ZIP:			22902
		BUSINESS PHONE:		925-368-8508

	MAIL ADDRESS:	
		STREET 1:		427 PARK ST.
		CITY:			CHARLOTTESVILLE
		STATE:			VA
		ZIP:			22902

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OConnell Daniel Joseph
		CENTRAL INDEX KEY:			0001865136
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O ACUMEN PHARMACEUTICALS, INC.
		STREET 2:		427 PARK STREET
		CITY:			CHARLOTTESVILLE
		STATE:			VA
		ZIP:			22902
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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      <filer>
        <filerCredentials>
          <cik>0001865136</cik>
          <ccc>XXXXXXXX</ccc>
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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0001576885</issuerCik>
      <issuerName>Acumen Pharmaceuticals, Inc.</issuerName>
      <secFileNumber>001-40551</secFileNumber>
      <issuerAddress>
        <com:street1>427 PARK ST.</com:street1>
        <com:city>CHARLOTTESVILLE</com:city>
        <com:stateOrCountry>VA</com:stateOrCountry>
        <com:zipCode>22902</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>925-368-8508</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>OConnell Daniel Joseph</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Merrill Lynch</name>
        <address>
          <com:street1>225 Liberty Street</com:street1>
          <com:street2>Floor 37</com:street2>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10281</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>47778</noOfUnitsSold>
      <aggregateMarketValue>87873.28</aggregateMarketValue>
      <noOfUnitsOutstanding>60079778</noOfUnitsOutstanding>
      <approxSaleDate>01/03/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>01/02/2025</acquiredDate>
      <natureOfAcquisitionTransaction>Vesting of restricted stock unit award</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Acumen Pharmaceuticals, Inc.</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>47778</amountOfSecuritiesAcquired>
      <paymentDate>01/02/2025</paymentDate>
      <natureOfPayment>Granted as part of issuer equity compensation plan</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>01/03/2025</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>06/24/2024</planAdoptionDate>
      </planAdoptionDates>
      <signature>Daniel O'Connell</signature>
    </noticeSignature>
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