<SEC-DOCUMENT>0001178937-25-000097.txt : 20251215
<SEC-HEADER>0001178937-25-000097.hdr.sgml : 20251215
<ACCEPTANCE-DATETIME>20251215185635
ACCESSION NUMBER:		0001178937-25-000097
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251215
DATE AS OF CHANGE:		20251215

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Disc Medicine, Inc.
		CENTRAL INDEX KEY:			0001816736
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				851612845
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-39438
		FILM NUMBER:		251572937

	BUSINESS ADDRESS:	
		STREET 1:		321 ARSENAL STREET, SUITE 101
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472
		BUSINESS PHONE:		(617) 674-9274

	MAIL ADDRESS:	
		STREET 1:		321 ARSENAL STREET, SUITE 101
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Gemini Therapeutics, Inc. /DE
		DATE OF NAME CHANGE:	20210209

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FS Development Corp.
		DATE OF NAME CHANGE:	20200702

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Atlas Venture Opportunity Fund II, L.P.
		CENTRAL INDEX KEY:			0001885327
		ORGANIZATION NAME:           	
		EIN:				872809161
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144

	BUSINESS ADDRESS:	
		STREET 1:		300 TECHNOLOGY SQUARE
		STREET 2:		8TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		857-201-2700

	MAIL ADDRESS:	
		STREET 1:		300 TECHNOLOGY SQUARE
		STREET 2:		8TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
</SEC-HEADER>
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<TYPE>144
<SEQUENCE>1
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      <issuerName>Disc Medicine, Inc.</issuerName>
      <secFileNumber>001-39438</secFileNumber>
      <issuerAddress>
        <com:street1>321 ARSENAL STREET, SUITE 101</com:street1>
        <com:city>WATERTOWN</com:city>
        <com:stateOrCountry>MA</com:stateOrCountry>
        <com:zipCode>02472</com:zipCode>
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      <issuerContactPhone>(617) 674-9274</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Atlas Venture Opportunity Fund II, L.P.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Shareholder</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>BTIG, LLC</name>
        <address>
          <com:street1>350 Bush Street</com:street1>
          <com:street2>9th Floor</com:street2>
          <com:city>San Francisco</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94104</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>8851</noOfUnitsSold>
      <aggregateMarketValue>814292.00</aggregateMarketValue>
      <noOfUnitsOutstanding>37750162</noOfUnitsOutstanding>
      <approxSaleDate>12/15/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ GM</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>12/27/2022</acquiredDate>
      <natureOfAcquisitionTransaction>Private Placement</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>8851</amountOfSecuritiesAcquired>
      <paymentDate>12/27/2022</paymentDate>
      <natureOfPayment>Wire</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Atlas Venture Opportunity Fund I, LP.</name>
        <address>
          <com:street1>300 Technology Sq</com:street1>
          <com:street2>Ste 8</com:street2>
          <com:city>Cambridge</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/07/2025</saleDate>
      <amountOfSecuritiesSold>18039</amountOfSecuritiesSold>
      <grossProceeds>1233536.76</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Atlas Venture Opportunity Fund I, LP.</name>
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          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/08/2025</saleDate>
      <amountOfSecuritiesSold>71961</amountOfSecuritiesSold>
      <grossProceeds>5078963.70</grossProceeds>
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    <securitiesSoldInPast3Months>
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        <name>Atlas Venture Opportunity Fund I, LP.</name>
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          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <securitiesClassTitle>Common</securitiesClassTitle>
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      <amountOfSecuritiesSold>1425</amountOfSecuritiesSold>
      <grossProceeds>109877.19</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Atlas Venture Fund X, L.P.</name>
        <address>
          <com:street1>300 Technology Sq</com:street1>
          <com:street2>Ste 8</com:street2>
          <com:city>Cambridge</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <saleDate>10/15/2025</saleDate>
      <amountOfSecuritiesSold>22160</amountOfSecuritiesSold>
      <grossProceeds>1711487.71</grossProceeds>
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    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Atlas Venture Fund X, L.P.</name>
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          <com:street1>300 Technology Sq</com:street1>
          <com:street2>Ste 8</com:street2>
          <com:city>Cambridge</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <amountOfSecuritiesSold>1425</amountOfSecuritiesSold>
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        <name>Atlas Venture Opportunity Fund I, LP.</name>
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          <com:street1>300 Technology Sq</com:street1>
          <com:street2>Ste 8</com:street2>
          <com:city>Cambridge</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <securitiesClassTitle>Common</securitiesClassTitle>
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    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Atlas Venture Fund X, L.P.</name>
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          <com:street1>300 Technology Sq Ste 8 </com:street1>
          <com:city>Cambridge</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <securitiesClassTitle>Common</securitiesClassTitle>
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      <amountOfSecuritiesSold>50000</amountOfSecuritiesSold>
      <grossProceeds>4439428.75</grossProceeds>
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    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Atlas Venture Opportunity Fund I, LP.</name>
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          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02139</com:zipCode>
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      <securitiesClassTitle>Common</securitiesClassTitle>
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      <grossProceeds>3111969.00</grossProceeds>
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    <securitiesSoldInPast3Months>
      <sellerDetails>
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        </address>
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      <grossProceeds>4554840.06</grossProceeds>
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      <sellerDetails>
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          <com:city>Cambridge</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
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    <noticeSignature>
      <noticeDate>12/15/2025</noticeDate>
      <signature>Ommer Chohan</signature>
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</SEC-DOCUMENT>
