<SEC-DOCUMENT>0000950170-24-023437.txt : 20240229
<SEC-HEADER>0000950170-24-023437.hdr.sgml : 20240229
<ACCEPTANCE-DATETIME>20240229194910
ACCESSION NUMBER:		0000950170-24-023437
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240229
DATE AS OF CHANGE:		20240229

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Dyne Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001818794
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				364883909
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-39509
		FILM NUMBER:		24706348

	BUSINESS ADDRESS:	
		STREET 1:		1560 TRAPELO ROAD
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		(781) 786-8230

	MAIL ADDRESS:	
		STREET 1:		1560 TRAPELO ROAD
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			McNeill Jonathan
		CENTRAL INDEX KEY:			0001824673
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O DYNE THERAPEUTICS, INC.
		STREET 2:		830 WINTER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<headerData>
<submissionType>144</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0001824673</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>
</filerInfo>
</headerData>
<formData>
<issuerInfo>
<issuerCik>0001818794</issuerCik>
<issuerName>Dyne Therapeutics, Inc.</issuerName>
<secFileNumber>001-39509</secFileNumber>
<issuerAddress>
<street1 xmlns="http://www.sec.gov/edgar/common">1560 Trapelo Road</street1>
<city xmlns="http://www.sec.gov/edgar/common">Waltham</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02451</zipCode>
</issuerAddress>
<issuerContactPhone>(781)-786-8230</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Jonathan McNeill</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
<relationshipsToIssuer>
<relationshipToIssuer>Officer</relationshipToIssuer>
</relationshipsToIssuer>
</issuerInfo>
<securitiesInformation>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>Stifel Financial Corporation</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">3 Bryant Park, 4th Floor</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">1095 Avenue of the Americas</street2>
<city xmlns="http://www.sec.gov/edgar/common">New York</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">NY</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">10036</zipCode>
</address>
</brokerOrMarketmakerDetails>
<noOfUnitsSold>4268</noOfUnitsSold>
<aggregateMarketValue>117382</aggregateMarketValue>
<noOfUnitsOutstanding>61375598</noOfUnitsOutstanding>
<approxSaleDate>02/29/2024</approxSaleDate>
<securitiesExchangeName>NASDAQ</securitiesExchangeName>
</securitiesInformation>
<securitiesToBeSold>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<acquiredDate>02/29/2024</acquiredDate>
<natureOfAcquisitionTransaction>Stock option exercise</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>4268</amountOfSecuritiesAcquired>
<paymentDate>02/29/2024</paymentDate>
<natureOfPayment>Cash</natureOfPayment>
</securitiesToBeSold>
<nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Jonathan McNeill</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">1560 Trapelo Road</street1>
<city xmlns="http://www.sec.gov/edgar/common">Waltham</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02451</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>12/11/2023</saleDate>
<amountOfSecuritiesSold>1245</amountOfSecuritiesSold>
<grossProceeds>13346</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Jonathan McNeill</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">1560 Trapelo Road</street1>
<city xmlns="http://www.sec.gov/edgar/common">Waltham</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02451</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>01/02/2024</saleDate>
<amountOfSecuritiesSold>11900</amountOfSecuritiesSold>
<grossProceeds>155890</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Jonathan McNeill</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">1560 Trapelo Road</street1>
<city xmlns="http://www.sec.gov/edgar/common">Waltham</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02451</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>01/03/2024</saleDate>
<amountOfSecuritiesSold>17991</amountOfSecuritiesSold>
<grossProceeds>337048</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Jonathan McNeill</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">1560 Trapelo Road</street1>
<city xmlns="http://www.sec.gov/edgar/common">Waltham</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02451</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>01/04/2024</saleDate>
<amountOfSecuritiesSold>2009</amountOfSecuritiesSold>
<grossProceeds>36246</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Jonathan McNeill</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">1560 Trapelo Road</street1>
<city xmlns="http://www.sec.gov/edgar/common">Waltham</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02451</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>01/26/2024</saleDate>
<amountOfSecuritiesSold>20000</amountOfSecuritiesSold>
<grossProceeds>490502</grossProceeds>
</securitiesSoldInPast3Months>
<remarks>The sales reported in this Form 144 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 29, 2023.</remarks>
<noticeSignature>
<noticeDate>02/29/2024</noticeDate>
<planAdoptionDates>
<planAdoptionDate>06/29/2023</planAdoptionDate>
</planAdoptionDates>
<signature>/s/ Richard Scalzo, Attorney-in-Fact</signature>
</noticeSignature>
</formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
