    <SEC-DOCUMENT>0001628280-25-039265-index.html : 20250808
    <SEC-HEADER>0001628280-25-039265.hdr.sgml : 20250808
    <ACCEPTANCE-DATETIME>20250808160555
    ACCESSION NUMBER:		0001628280-25-039265
    CONFORMED SUBMISSION TYPE:	424B4
    PUBLIC DOCUMENT COUNT:		19
    FILED AS OF DATE:		20250808
    DATE AS OF CHANGE:		20250808

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Heartflow, Inc.
    		CENTRAL INDEX KEY:			0001464521
    		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
    		ORGANIZATION NAME:           	08 Industrial Applications and Services
    		EIN:				260506743
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		424B4
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-288733
    		FILM NUMBER:		251198386

    	BUSINESS ADDRESS:
    		STREET 1:		331 E EVELYN AVENUE
    		CITY:			MOUNTAIN VIEW
    		STATE:			CA
    		ZIP:			94041
    		BUSINESS PHONE:		650-241-1221

    	MAIL ADDRESS:
    		STREET 1:		331 E EVELYN AVENUE
    		CITY:			MOUNTAIN VIEW
    		STATE:			CA
    		ZIP:			94041

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Cardiovascular Simulation, Inc.
    		DATE OF NAME CHANGE:	20090519
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>424B4
    <SEQUENCE>1
    <FILENAME>heartflowinc-424b4.htm
    <DESCRIPTION>424B4
    <TEXT>
    Document 1 - file: heartflowinc-424b4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>business10d.jpg
    <TEXT>
    Document 2 - file: business10d.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>business11f.jpg
    <TEXT>
    Document 3 - file: business11f.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>business13d.jpg
    <TEXT>
    Document 4 - file: business13d.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>business15b.jpg
    <TEXT>
    Document 5 - file: business15b.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>business1a.jpg
    <TEXT>
    Document 6 - file: business1a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>business2b.jpg
    <TEXT>
    Document 7 - file: business2b.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>business3e.jpg
    <TEXT>
    Document 8 - file: business3e.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>business4f.jpg
    <TEXT>
    Document 9 - file: business4f.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>business5d.jpg
    <TEXT>
    Document 10 - file: business5d.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>business6e.jpg
    <TEXT>
    Document 11 - file: business6e.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>business7e.jpg
    <TEXT>
    Document 12 - file: business7e.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>ffrctanalysis2a.jpg
    <TEXT>
    Document 13 - file: ffrctanalysis2a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>heartflowlogo.jpg
    <TEXT>
    Document 14 - file: heartflowlogo.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>picture1number3a.jpg
    <TEXT>
    Document 15 - file: picture1number3a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>picture4.jpg
    <TEXT>
    Document 16 - file: picture4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>prospectussummary1b.jpg
    <TEXT>
    Document 17 - file: prospectussummary1b.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>prospectussummary2c.jpg
    <TEXT>
    Document 18 - file: prospectussummary2c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>prospectussummary3c.jpg
    <TEXT>
    Document 19 - file: prospectussummary3c.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>