<SEC-DOCUMENT>0001104659-21-081637-index.html : 20210616
<SEC-HEADER>0001104659-21-081637.hdr.sgml : 20210616
<ACCEPTANCE-DATETIME>20210615193503
ACCESSION NUMBER:		0001104659-21-081637
CONFORMED SUBMISSION TYPE:	8-K/A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20210610
ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20210616
DATE AS OF CHANGE:		20210615

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Quantum-Si Inc
		CENTRAL INDEX KEY:			0001816431
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				851388175
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39486
		FILM NUMBER:		211020137

	BUSINESS ADDRESS:	
		STREET 1:		530 OLD WHITFIELD STREET
		CITY:			GUILFORD
		STATE:			CT
		ZIP:			06437
		BUSINESS PHONE:		(203) 458-7100

	MAIL ADDRESS:	
		STREET 1:		530 OLD WHITFIELD STREET
		CITY:			GUILFORD
		STATE:			CT
		ZIP:			06437

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HighCape Capital Acquisition Corp.
		DATE OF NAME CHANGE:	20200629
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K/A
<SEQUENCE>1
<FILENAME>tm2118908d3_8ka.htm
<DESCRIPTION>FORM 8-K/A
<TEXT>
Document 1 - file: tm2118908d3_8ka.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-16.1
<SEQUENCE>2
<FILENAME>tm2118908d3_ex16-1.htm
<DESCRIPTION>EXHIBIT 16.1
<TEXT>
Document 2 - file: tm2118908d3_ex16-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.4
<SEQUENCE>3
<FILENAME>tm2118908d3_ex99-4.htm
<DESCRIPTION>EXHIBIT 99.4
<TEXT>
Document 3 - file: tm2118908d3_ex99-4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm2118908d3_ex99-4img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm2118908d3_ex99-4img001.jpg

</DOCUMENT>
</SEC-DOCUMENT>