<SEC-DOCUMENT>0001973141-24-000559.txt : 20241115 <SEC-HEADER>0001973141-24-000559.hdr.sgml : 20241115 <ACCEPTANCE-DATETIME>20241115161226 ACCESSION NUMBER: 0001973141-24-000559 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20241115 DATE AS OF CHANGE: 20241115 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: X4 Pharmaceuticals, Inc CENTRAL INDEX KEY: 0001501697 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 273181608 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-38295 FILM NUMBER: 241467973 BUSINESS ADDRESS: STREET 1: 61 NORTH BEACON STREET STREET 2: 4TH FLOOR CITY: BOSTON STATE: MA ZIP: 02134 BUSINESS PHONE: 857-529-8300 MAIL ADDRESS: STREET 1: 61 NORTH BEACON STREET STREET 2: 4TH FLOOR CITY: BOSTON STATE: MA ZIP: 02134 FORMER COMPANY: FORMER CONFORMED NAME: Arsanis, Inc. DATE OF NAME CHANGE: 20100920 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Ragan Paula CENTRAL INDEX KEY: 0001769914 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O X4 PHARMACEUTICALS, INC. STREET 2: 955 MASSACHUSETTS AVE., 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02139 </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:com="http://www.sec.gov/edgar/common"> <headerData> <submissionType>144</submissionType> <filerInfo> <filer> <filerCredentials> <cik>0001769914</cik> <ccc>XXXXXXXX</ccc> </filerCredentials> </filer> <liveTestFlag>LIVE</liveTestFlag> </filerInfo> </headerData> <formData> <issuerInfo> <issuerCik>0001501697</issuerCik> <issuerName>X4 Pharmaceuticals, Inc</issuerName> <secFileNumber>001-38295</secFileNumber> <issuerAddress> <com:street1>61 NORTH BEACON STREET</com:street1> <com:street2>4TH FLOOR</com:street2> <com:city>BOSTON</com:city> <com:stateOrCountry>MA</com:stateOrCountry> <com:zipCode>02134</com:zipCode> </issuerAddress> <issuerContactPhone>857-529-8300</issuerContactPhone> <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Ragan Paula</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold> <relationshipsToIssuer> <relationshipToIssuer>Officer</relationshipToIssuer> </relationshipsToIssuer> </issuerInfo> <securitiesInformation> <securitiesClassTitle>Common</securitiesClassTitle> <brokerOrMarketmakerDetails> <name>UBS Financial Services, Inc</name> <address> <com:street1>1000 Harbor Blvd</com:street1> <com:street2>3rd Floor</com:street2> <com:city>Weehawken</com:city> <com:stateOrCountry>NJ</com:stateOrCountry> <com:zipCode>07086</com:zipCode> </address> </brokerOrMarketmakerDetails> <noOfUnitsSold>31897</noOfUnitsSold> <aggregateMarketValue>13077.77</aggregateMarketValue> <noOfUnitsOutstanding>170546469</noOfUnitsOutstanding> <approxSaleDate>11/15/2024</approxSaleDate> <securitiesExchangeName>Nasdaq</securitiesExchangeName> </securitiesInformation> <securitiesToBeSold> <securitiesClassTitle>Common</securitiesClassTitle> <acquiredDate>08/17/2021</acquiredDate> <natureOfAcquisitionTransaction>RSU/PRSU Vest</natureOfAcquisitionTransaction> <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired> <isGiftTransaction>N</isGiftTransaction> <amountOfSecuritiesAcquired>16436</amountOfSecuritiesAcquired> <paymentDate>08/17/2021</paymentDate> <natureOfPayment>NA</natureOfPayment> </securitiesToBeSold> <securitiesToBeSold> <securitiesClassTitle>Common</securitiesClassTitle> <acquiredDate>07/15/2021</acquiredDate> <natureOfAcquisitionTransaction>RSU/PRSU Vest</natureOfAcquisitionTransaction> <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired> <isGiftTransaction>N</isGiftTransaction> <amountOfSecuritiesAcquired>15461</amountOfSecuritiesAcquired> <paymentDate>07/15/2021</paymentDate> <natureOfPayment>NA</natureOfPayment> </securitiesToBeSold> <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months> <securitiesSoldInPast3Months> <sellerDetails> <name>Paula Ragan</name> <address> <com:street1>61 North Beacon Street</com:street1> <com:street2>4th Floor</com:street2> <com:city>Boston</com:city> <com:stateOrCountry>MA</com:stateOrCountry> <com:zipCode>02134</com:zipCode> </address> </sellerDetails> <securitiesClassTitle>Common</securitiesClassTitle> <saleDate>10/07/2024</saleDate> <amountOfSecuritiesSold>239436</amountOfSecuritiesSold> <grossProceeds>131522.19</grossProceeds> </securitiesSoldInPast3Months> <securitiesSoldInPast3Months> <sellerDetails> <name>Paula Ragan</name> <address> <com:street1>61 North Beacon Street</com:street1> <com:street2>4th Floor</com:street2> <com:city>Boston</com:city> <com:stateOrCountry>MA</com:stateOrCountry> <com:zipCode>02134</com:zipCode> </address> </sellerDetails> <securitiesClassTitle>Common</securitiesClassTitle> <saleDate>10/15/2024</saleDate> <amountOfSecuritiesSold>31897</amountOfSecuritiesSold> <grossProceeds>17926.11</grossProceeds> </securitiesSoldInPast3Months> <noticeSignature> <noticeDate>11/15/2024</noticeDate> <planAdoptionDates> <planAdoptionDate>06/28/2024</planAdoptionDate> </planAdoptionDates> <signature>/s/ UBS Financial Services Inc, as attorney-in-fact for Paula Ragan</signature> </noticeSignature> </formData> </edgarSubmission> </XML> </TEXT> </DOCUMENT> </SEC-DOCUMENT>