    <SEC-DOCUMENT>0001104659-20-131754-index.html : 20201203
    <SEC-HEADER>0001104659-20-131754.hdr.sgml : 20201203
    <ACCEPTANCE-DATETIME>20201203060259
    ACCESSION NUMBER:		0001104659-20-131754
    CONFORMED SUBMISSION TYPE:	S-1/A
    PUBLIC DOCUMENT COUNT:		15
    FILED AS OF DATE:		20201203
    DATE AS OF CHANGE:		20201203

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Certara, Inc.
    		CENTRAL INDEX KEY:			0001827090
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		S-1/A
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-250182
    		FILM NUMBER:		201365605

    	BUSINESS ADDRESS:
    		STREET 1:		100 OVERLOOK CENTER, SUITE 101
    		CITY:			PRINCETON
    		STATE:			NJ
    		ZIP:			08540
    		BUSINESS PHONE:		(609) 716-7900

    	MAIL ADDRESS:
    		STREET 1:		100 OVERLOOK CENTER, SUITE 101
    		CITY:			PRINCETON
    		STATE:			NJ
    		ZIP:			08540
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>S-1/A
    <SEQUENCE>1
    <FILENAME>tm2030105-12_s1a.htm
    <DESCRIPTION>S-1/A
    <TEXT>
    Document 1 - file: tm2030105-12_s1a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-1.1
    <SEQUENCE>2
    <FILENAME>tm2030105d13_ex1-1.htm
    <DESCRIPTION>EXHIBIT 1.1
    <TEXT>
    Document 2 - file: tm2030105d13_ex1-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.1
    <SEQUENCE>3
    <FILENAME>tm2030105d13_ex4-1.htm
    <DESCRIPTION>EXHIBIT 4.1
    <TEXT>
    Document 3 - file: tm2030105d13_ex4-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.1
    <SEQUENCE>4
    <FILENAME>tm2030105d13_ex5-1.htm
    <DESCRIPTION>EXHIBIT 5.1
    <TEXT>
    Document 4 - file: tm2030105d13_ex5-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.19
    <SEQUENCE>5
    <FILENAME>tm2030105d13_ex10-19.htm
    <DESCRIPTION>EXHIBIT 10.19
    <TEXT>
    Document 5 - file: tm2030105d13_ex10-19.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.20
    <SEQUENCE>6
    <FILENAME>tm2030105d13_ex10-20.htm
    <DESCRIPTION>EXHIBIT 10.20
    <TEXT>
    Document 6 - file: tm2030105d13_ex10-20.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-21.1
    <SEQUENCE>7
    <FILENAME>tm2030105d13_ex21-1.htm
    <DESCRIPTION>EXHIBIT 21.1
    <TEXT>
    Document 7 - file: tm2030105d13_ex21-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.2
    <SEQUENCE>8
    <FILENAME>tm2030105d13_ex23-2.htm
    <DESCRIPTION>EXHIBIT 23.2
    <TEXT>
    Document 8 - file: tm2030105d13_ex23-2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>lg_certara-4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: lg_certara-4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>tm2030105d12-fc_phoenix4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: tm2030105d12-fc_phoenix4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tm2030105d12-ifc_cover4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tm2030105d12-ifc_cover4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>tm2030105d12-pc_illustrat4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: tm2030105d12-pc_illustrat4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>tm2030105d12-tbl_discov4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: tm2030105d12-tbl_discov4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>tm2030105d12-tbl_platform4c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: tm2030105d12-tbl_platform4c.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>tm2030105d13_ex4-1img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: tm2030105d13_ex4-1img001.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>