    <SEC-DOCUMENT>0001213900-25-065675-index.html : 20250718
    <SEC-HEADER>0001213900-25-065675.hdr.sgml : 20250718
    <ACCEPTANCE-DATETIME>20250718161655
    ACCESSION NUMBER:		0001213900-25-065675
    CONFORMED SUBMISSION TYPE:	S-1
    PUBLIC DOCUMENT COUNT:		44
    FILED AS OF DATE:		20250718
    DATE AS OF CHANGE:		20250718

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Cantor Equity Partners IV, Inc.
    		CENTRAL INDEX KEY:			0002034267
    		STANDARD INDUSTRIAL CLASSIFICATION:	BLANK CHECKS [6770]
    		ORGANIZATION NAME:           	05 Real Estate & Construction
    		EIN:				000000000
    		STATE OF INCORPORATION:			E9
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		S-1
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-288768
    		FILM NUMBER:		251134700

    	BUSINESS ADDRESS:
    		STREET 1:		110 EAST 59TH STREET
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10022
    		BUSINESS PHONE:		2129385000

    	MAIL ADDRESS:
    		STREET 1:		110 EAST 59TH STREET
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10022
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>S-1
    <SEQUENCE>1
    <FILENAME>ea0235814-02.htm
    <DESCRIPTION>REGISTRATION STATEMENT
    <TEXT>
    Document 1 - file: ea0235814-02.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-1.1
    <SEQUENCE>2
    <FILENAME>ea023581402ex1-1_cantor4.htm
    <DESCRIPTION>FORM OF UNDERWRITING AGREEMENT
    <TEXT>
    Document 2 - file: ea023581402ex1-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-1.2
    <SEQUENCE>3
    <FILENAME>ea023581402ex1-2_cantor4.htm
    <DESCRIPTION>FORM OF BUSINESS COMBINATION MARKETING AGREEMENT
    <TEXT>
    Document 3 - file: ea023581402ex1-2_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>4
    <FILENAME>ea023581402ex3-1_cantor4.htm
    <DESCRIPTION>MEMORANDUM AND ARTICLES OF ASSOCIATION
    <TEXT>
    Document 4 - file: ea023581402ex3-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.2
    <SEQUENCE>5
    <FILENAME>ea023581402ex3-2_cantor4.htm
    <DESCRIPTION>FORM OF AMENDED AND RESTATED MEMORANDUM AND ARTICLES OF ASSOCIATION TO BE IN EFFECT AT THE CLOSING OF THE INITIAL PUBLIC OFFERING
    <TEXT>
    Document 5 - file: ea023581402ex3-2_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.1
    <SEQUENCE>6
    <FILENAME>ea023581402ex4-1_cantor4.htm
    <DESCRIPTION>SPECIMEN CLASS A ORDINARY SHARE CERTIFICATE
    <TEXT>
    Document 6 - file: ea023581402ex4-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.1
    <SEQUENCE>7
    <FILENAME>ea023581402ex5-1_cantor4.htm
    <DESCRIPTION>OPINION OF MAPLES AND CALDER (CAYMAN) LLP
    <TEXT>
    Document 7 - file: ea023581402ex5-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>8
    <FILENAME>ea023581402ex10-1_cantor4.htm
    <DESCRIPTION>SECURITIES PURCHASE AGREEMENT, DATED MAY 14, 2021, BY AND BETWEEN THE REGISTRANT AND CANTOR EP HOLDINGS IV, LLC (F/K/A CFAC INTERNATIONAL HOLDINGS VI, LLC)
    <TEXT>
    Document 8 - file: ea023581402ex10-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.2
    <SEQUENCE>9
    <FILENAME>ea023581402ex10-2_cantor4.htm
    <DESCRIPTION>PROMISSORY NOTE, DATED JUNE 6, 2024, ISSUED TO CANTOR EP HOLDINGS IV, LLC
    <TEXT>
    Document 9 - file: ea023581402ex10-2_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.3
    <SEQUENCE>10
    <FILENAME>ea023581402ex10-3_cantor4.htm
    <DESCRIPTION>FORM OF LETTER AGREEMENT AMONG THE REGISTRANT AND OUR OFFICERS, DIRECTORS AND CANTOR EP HOLDINGS IV, LLC
    <TEXT>
    Document 10 - file: ea023581402ex10-3_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.4
    <SEQUENCE>11
    <FILENAME>ea023581402ex10-4_cantor4.htm
    <DESCRIPTION>FORM OF INVESTMENT MANAGEMENT TRUST AGREEMENT BETWEEN CONTINENTAL STOCK TRANSFER & TRUST COMPANY, LLC AND THE REGISTRANT
    <TEXT>
    Document 11 - file: ea023581402ex10-4_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.5
    <SEQUENCE>12
    <FILENAME>ea023581402ex10-5_cantor4.htm
    <DESCRIPTION>FORM OF REGISTRATION RIGHTS AGREEMENT BETWEEN THE REGISTRANT AND CERTAIN SHAREHOLDERS
    <TEXT>
    Document 12 - file: ea023581402ex10-5_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.6
    <SEQUENCE>13
    <FILENAME>ea023581402ex10-6_cantor4.htm
    <DESCRIPTION>FORM OF PRIVATE PLACEMENT SHARES PURCHASE AGREEMENT BETWEEN THE REGISTRANT AND CANTOR EP HOLDINGS IV, LLC
    <TEXT>
    Document 13 - file: ea023581402ex10-6_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.7
    <SEQUENCE>14
    <FILENAME>ea023581402ex10-7_cantor4.htm
    <DESCRIPTION>FORM OF INDEMNITY AGREEMENT
    <TEXT>
    Document 14 - file: ea023581402ex10-7_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.8
    <SEQUENCE>15
    <FILENAME>ea023581402ex10-8_cantor4.htm
    <DESCRIPTION>FORM OF EXPENSE ADVANCE AGREEMENT BETWEEN THE REGISTRANT AND CANTOR EP HOLDINGS IV, LLC
    <TEXT>
    Document 15 - file: ea023581402ex10-8_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.9
    <SEQUENCE>16
    <FILENAME>ea023581402ex10-9_cantor4.htm
    <DESCRIPTION>FORM OF ADMINISTRATIVE SERVICES AGREEMENT BETWEEN THE REGISTRANT AND CANTOR EP HOLDINGS IV, LLC
    <TEXT>
    Document 16 - file: ea023581402ex10-9_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-14
    <SEQUENCE>17
    <FILENAME>ea023581402ex14_cantor4.htm
    <DESCRIPTION>FORM OF CODE OF ETHICS
    <TEXT>
    Document 17 - file: ea023581402ex14_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.1
    <SEQUENCE>18
    <FILENAME>ea023581402ex23-1_cantor4.htm
    <DESCRIPTION>CONSENT OF WITHUMSMITH+BROWN, PC
    <TEXT>
    Document 18 - file: ea023581402ex23-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>19
    <FILENAME>ea023581402ex99-1_cantor4.htm
    <DESCRIPTION>FORM OF AUDIT COMMITTEE CHARTER
    <TEXT>
    Document 19 - file: ea023581402ex99-1_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>20
    <FILENAME>ea023581402ex99-2_cantor4.htm
    <DESCRIPTION>FORM OF COMPENSATION COMMITTEE CHARTER
    <TEXT>
    Document 20 - file: ea023581402ex99-2_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>21
    <FILENAME>ea023581402ex99-3_cantor4.htm
    <DESCRIPTION>CONSENT OF DANNY SALINAS
    <TEXT>
    Document 21 - file: ea023581402ex99-3_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-FILING FEES
    <SEQUENCE>22
    <FILENAME>ea023581402ex-fee_cantor4.htm
    <DESCRIPTION>FILING FEE TABLE
    <TEXT>
    Document 22 - file: ea023581402ex-fee_cantor4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>23
    <FILENAME>ck0002034267-20250718.xsd
    <DESCRIPTION>XBRL SCHEMA FILE
    <TEXT>
    Document 23 - file: ck0002034267-20250718.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>24
    <FILENAME>ck0002034267-20250718_def.xml
    <DESCRIPTION>XBRL DEFINITION FILE
    <TEXT>
    Document 24 - file: ck0002034267-20250718_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>25
    <FILENAME>ck0002034267-20250718_lab.xml
    <DESCRIPTION>XBRL LABEL FILE
    <TEXT>
    Document 25 - file: ck0002034267-20250718_lab.xml

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    <TYPE>EX-101.PRE
    <SEQUENCE>26
    <FILENAME>ck0002034267-20250718_pre.xml
    <DESCRIPTION>XBRL PRESENTATION FILE
    <TEXT>
    Document 26 - file: ck0002034267-20250718_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>ex5-1_001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: ex5-1_001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>ex5-1_002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: ex5-1_002.jpg

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    <TYPE>XML
    <SEQUENCE>30
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 30 - file: R1.htm

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: R2.htm

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>32
    <FILENAME>R3.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: R3.htm

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    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>R4.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: R4.htm

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    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>R5.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: R5.htm

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    <TYPE>XML
    <SEQUENCE>35
    <FILENAME>R6.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: R6.htm

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    <TYPE>XML
    <SEQUENCE>36
    <FILENAME>R7.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 36 - file: R7.htm

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    <TYPE>XML
    <SEQUENCE>37
    <FILENAME>R8.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 37 - file: R8.htm

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    <TYPE>XML
    <SEQUENCE>38
    <FILENAME>R9.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 38 - file: R9.htm

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    <TYPE>XML
    <SEQUENCE>39
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 39 - file: Show.js

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>40
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 40 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>42
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 42 - file: FilingSummary.html

    Document 42 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>44
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 44 - file: MetaLinks.json

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    <TYPE>ZIP
    <SEQUENCE>45
    <FILENAME>0001213900-25-065675-xbrl.zip
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    <TEXT>
    Document 45 - file: 0001213900-25-065675-xbrl.zip

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    <TYPE>XML
    <SEQUENCE>46
    <FILENAME>ea0235814-02_htm.xml
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    <TEXT>
    Document 46 - file: ea0235814-02_htm.html

    Document 46 - RAW XML: ea0235814-02_htm.xml

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