<SEC-DOCUMENT>0001104659-22-054147-index.html : 20220502
<SEC-HEADER>0001104659-22-054147.hdr.sgml : 20220502
<ACCEPTANCE-DATETIME>20220502074852
ACCESSION NUMBER:		0001104659-22-054147
CONFORMED SUBMISSION TYPE:	SC TO-T
PUBLIC DOCUMENT COUNT:		17
FILED AS OF DATE:		20220502
DATE AS OF CHANGE:		20220502
GROUP MEMBERS:		SCANDINAVIAN ACQUISITION SUB, INC.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Checkmate Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001651431
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				364813934
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC TO-T
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-91617
		FILM NUMBER:		22879438

	BUSINESS ADDRESS:	
		STREET 1:		245 MAIN STREET, 2ND FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		978-503-2124

	MAIL ADDRESS:	
		STREET 1:		245 MAIN STREET, 2ND FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			REGENERON PHARMACEUTICALS, INC.
		CENTRAL INDEX KEY:			0000872589
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				133444607
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC TO-T

	BUSINESS ADDRESS:	
		STREET 1:		777 OLD SAW MILL RIVER ROAD
		CITY:			TARRYTOWN
		STATE:			NY
		ZIP:			10591
		BUSINESS PHONE:		9148477000

	MAIL ADDRESS:	
		STREET 1:		777 OLD SAW MILL RIVER ROAD
		CITY:			TARRYTOWN
		STATE:			NY
		ZIP:			10591

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	REGENERON PHARMACEUTICALS INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC TO-T
<SEQUENCE>1
<FILENAME>tm2213969-1_sctot.htm
<DESCRIPTION>SC TO-T
<TEXT>
Document 1 - file: tm2213969-1_sctot.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(A)(1)(A)
<SEQUENCE>2
<FILENAME>tm2213969d1_ex99-a1a.htm
<DESCRIPTION>EX-99.(A)(1)(A)
<TEXT>
Document 2 - file: tm2213969d1_ex99-a1a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(A)(1)(B)
<SEQUENCE>3
<FILENAME>tm2213969d1_ex99-a1b.htm
<DESCRIPTION>EX-99.(A)(1)(B)
<TEXT>
Document 3 - file: tm2213969d1_ex99-a1b.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(A)(1)(C)
<SEQUENCE>4
<FILENAME>tm2213969d1_ex99-a1c.htm
<DESCRIPTION>EX-99.(A)(1)(C)
<TEXT>
Document 4 - file: tm2213969d1_ex99-a1c.htm

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<DOCUMENT>
<TYPE>EX-99.(A)(1)(D)
<SEQUENCE>5
<FILENAME>tm2213969d1_ex99-a1d.htm
<DESCRIPTION>EX-99.(A)(1)(D)
<TEXT>
Document 5 - file: tm2213969d1_ex99-a1d.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(A)(1)(E)
<SEQUENCE>6
<FILENAME>tm2213969d2_ex99-a1e.htm
<DESCRIPTION>EXHIBIT 99.(A)(1)(E)
<TEXT>
Document 6 - file: tm2213969d2_ex99-a1e.htm

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<TYPE>EX-99.(D)(2)
<SEQUENCE>7
<FILENAME>tm2213969d2_ex99-d2.htm
<DESCRIPTION>EXHIBIT-99.(D)(2)
<TEXT>
Document 7 - file: tm2213969d2_ex99-d2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(D)(4)
<SEQUENCE>8
<FILENAME>tm2213969d2_ex99-d4.htm
<DESCRIPTION>EXHIBIT-99.(D)(4)
<TEXT>
Document 8 - file: tm2213969d2_ex99-d4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>9
<FILENAME>tm2213969d2_ex-filingfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 9 - file: tm2213969d2_ex-filingfees.htm

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<SEQUENCE>10
<FILENAME>tm2213969d2_exa1eimg01.jpg
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Document 10 - file: tm2213969d2_exa1eimg01.jpg

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<SEQUENCE>11
<FILENAME>tm2213969d1-pg_01scanbwlr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: tm2213969d1-pg_01scanbwlr.jpg

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<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>tm2213969d1-pg_02scanbwlr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: tm2213969d1-pg_02scanbwlr.jpg

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<SEQUENCE>13
<FILENAME>tm2213969d1-pg_03scanbwlr.jpg
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<TEXT>
Document 13 - file: tm2213969d1-pg_03scanbwlr.jpg

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<SEQUENCE>14
<FILENAME>tm2213969d1-pg_04scanbwlr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: tm2213969d1-pg_04scanbwlr.jpg

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<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>tm2213969d1-pg_05scanbwlr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: tm2213969d1-pg_05scanbwlr.jpg

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<SEQUENCE>16
<FILENAME>tm2213969d1-pg_06scanbwlr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: tm2213969d1-pg_06scanbwlr.jpg

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<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>lg_innisfree-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: lg_innisfree-4c.jpg

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