CERT

SEC source: 0001415889-21-004189 · form4-09022021_010942.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 320,677

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $33.15 to $34.14. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-004185 · form4-09022021_010920.xml · nonDerivative · entry 2

Traynor Richard M. · CIK 0001834465 · SVP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 309,287

F3 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F4 · price: This transaction was executed in multiple trades at prices ranging from $33.96 to $34.29. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-004185 · form4-09022021_010920.xml · nonDerivative · entry 1

Traynor Richard M. · CIK 0001834465 · SVP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 319,878

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $32.96 to $33.95. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-004158 · form4-09012021_050903.xml · nonDerivative · entry 1

Edge Justin · CIK 0001834272 · PRES., REGULATORY & ACCESS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 433,090

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-004103 · form4-08262021_010854.xml · nonDerivative · entry 2

Feehery William F · CIK 0001543193 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,088,051

F3 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F4 · price: This transaction was executed in multiple trades at prices ranging from $31.19 to $31.60. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-004103 · form4-08262021_010854.xml · nonDerivative · entry 1

Feehery William F · CIK 0001543193 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,138,743

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $30.19 to $31.18. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-004093 · form4-08252021_010826.xml · nonDerivative · entry 1

Choe Jieun W. · CIK 0001834184 · CHIEF STRATEGY & MARKETING

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 322,991

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-004070 · form4-08232021_050820.xml · nonDerivative · entry 1

Choe Jieun W. · CIK 0001834184 · CHIEF STRATEGY & MARKETING

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 330,491

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $28.10 to $28.59. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003953 · form4-08172021_010843.xml · nonDerivative · entry 1

Edge Justin · CIK 0001834272 · PRES., REGULATORY & ACCESS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 442,090

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003959 · form4-08172021_010806.xml · nonDerivative · entry 1

Traynor Richard M. · CIK 0001834465 · SVP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 339,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003956 · form4-08172021_010851.xml · nonDerivative · entry 2

Schemick Michael Andrew · CIK 0001834300 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 696,843

F3 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F4 · price: This transaction was executed in multiple trades at prices ranging from $28.88 to $28.91. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003956 · form4-08172021_010851.xml · nonDerivative · entry 1

Schemick Michael Andrew · CIK 0001834300 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 698,243

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $27.88 to $28.86. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003915 · form4-08132021_020840.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 339,231

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $27.34 to $28.00. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001104659-21-098955 · tm2123827-1_4seq1.xml · nonDerivative · entry 1

EQT Avatar Parent L.P. · CIK 0001715533 · 10% owner

EQT Avatar Parent GP LLC · CIK 0001833933 · 10% owner

EQT Fund Management S.a r.l. · CIK 0001834239 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by EQT Avatar Parent L.P.

Disclosed balance after: 58,971,229

F1 · price: The sale was executed in a single block trade at $26.00 per share.

F2 · ownership.nature: Consists of shares of common stock held directly by EQT Avatar Parent L.P. ("EQT Investor"). EQT Avatar Parent GP LLC ("Avatar Parent GP") is the general partner of the EQT Investor. Several investment vehicles collectedly make up the fund known as "EQT VII." EQT VII owns 100% of the membership interests in Avatar Parent GP. EQT Fund Management S.a r.l. ("EFMS") has exclusive responsibility for the management and control of the business and affairs of investment vehicles which constitute the majority of the total commitments to EQT VII. As such, EFMS has the power to control Avatar Parent GP's voting and investment decisions and may be deemed to have beneficial ownership of the securities held by the EQT Investor.

SEC source: 0001415889-21-003767 · form4-08032021_010813.xml · nonDerivative · entry 2

SHERMAN NICOLETTE D · CIK 0001872604 · CHIEF HUMAN RESOURCES OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,620

F2 · shares: Represents 5,513 RSUs granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will cliff vest on August 1, 2022, subject to the continued service of the reporting person through the vesting date.

SEC source: 0001415889-21-003767 · form4-08032021_010813.xml · nonDerivative · entry 1

SHERMAN NICOLETTE D · CIK 0001872604 · CHIEF HUMAN RESOURCES OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,107

F1 · shares: Represents 10,107 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from August 1, 2022 to August 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001415889-21-003770 · form4-08032021_010824.xml · nonDerivative · entry 1

Collins Cynthia · CIK 0001405692 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,431

F1 · kind: Represents 6,431 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001415889-21-003772 · form4-08032021_010842.xml · nonDerivative · entry 1

Killefer Nancy · CIK 0001584637 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,431

F1 · kind: Represents 6,431 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001415889-21-003746 · form4-07302021_010720.xml · nonDerivative · entry 1

Feehery William F · CIK 0001543193 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,163,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $25.70 to $26.64 The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003728 · form4-07272021_020720.xml · nonDerivative · entry 1

Traynor Richard M. · CIK 0001834465 · SVP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 347,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003663 · form4-07212021_010736.xml · nonDerivative · entry 1

Schemick Michael Andrew · CIK 0001834300 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 763,510

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $23.75 to $24.66. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003353 · form4-07012021_020727.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 377,939

F1 · shares: Represents 5,495 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from July 1, 2021 to July 1, 2024, subject to the continued service of the reporting person through such vesting dates

SEC source: 0001415889-21-003481 · form4-07062021_010751.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 358,585

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $27.73 to $28.49. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003255 · form4-06292021_010606.xml · nonDerivative · entry 1

Traynor Richard M. · CIK 0001834465 · SVP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 350,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003249 · form4-06282021_010643.xml · nonDerivative · entry 1

Traynor Richard M. · CIK 0001834465 · SVP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 353,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003169 · form4-06242021_010641.xml · nonDerivative · entry 2

Feehery William F · CIK 0001543193 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,238,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F3 · price: This transaction was executed in multiple trades at prices ranging from $27.14 to $27.17. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003169 · form4-06242021_010641.xml · nonDerivative · entry 1

Feehery William F · CIK 0001543193 · Director · CHIEF EXECUTIVE OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,238,251

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $26.10 to $27.03. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003165 · form4-06232021_010602.xml · nonDerivative · entry 1

Schemick Michael Andrew · CIK 0001834300 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 830,177

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $26.76 to $27.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003052 · form4-06172021_090649.xml · nonDerivative · entry 1

Edge Justin · CIK 0001834272 · PRES., REGULATORY & ACCESS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 447,090

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003028 · form4-06162021_050625.xml · nonDerivative · entry 1

Gallagher Carol Giltner · CIK 0001329959 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,059

F1 · kind: Represents 7,059 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001415889-21-003015 · form4-06152021_090629.xml · nonDerivative · entry 2

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 372,444

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F3 · price: This transaction was executed in multiple trades at prices ranging from $28.00 to $28.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003015 · form4-06152021_090629.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 375,451

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $27.00 to $27.99. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003013 · form4-06152021_090603.xml · nonDerivative · entry 3

Rayner Craig R. · CIK 0001834170 · PRESIDENT, INTEGRATED DRUG DEV

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 370,472

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

SEC source: 0001415889-21-003013 · form4-06152021_090603.xml · nonDerivative · entry 2

Rayner Craig R. · CIK 0001834170 · PRESIDENT, INTEGRATED DRUG DEV

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 370,872

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F3 · price: This transaction was executed in multiple trades at prices ranging from $25.58 to $26.55. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001415889-21-003013 · form4-06152021_090603.xml · nonDerivative · entry 1

Rayner Craig R. · CIK 0001834170 · PRESIDENT, INTEGRATED DRUG DEV

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 416,951

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

F2 · price: This transaction was executed in multiple trades at prices ranging from $24.52 to $25.51. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

SEC source: 0001104659-21-068895 · tm2116784-3_4seq1.xml · nonDerivative · entry 1

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,739,614

F1 · kind: Represents 7,059 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001104659-21-068893 · tm2116784-2_4seq1.xml · nonDerivative · entry 1

McCoy Sherilyn S · CIK 0001422968 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 621,143

F1 · kind: Represents 7,059 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001104659-21-068896 · tm2116784-4_4seq1.xml · nonDerivative · entry 1

WALSH MATTHEW M · CIK 0001269428 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 179,960

F1 · kind: Represents 7,059 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001104659-21-068887 · tm2116784-1_4seq1.xml · nonDerivative · entry 1

CASHMAN JAMES E III · CIK 0001199440 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 483,782

F1 · kind: Represents 7,059 restricted stock units ("RSU") granted under the Certara Inc. 2020 Incentive Plan that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest on the earlier of the one-year anniversary of the date of grant or the date of the Company's next annual stockholder meeting.

SEC source: 0001104659-21-048728 · tm2112600-3_4seq1.xml · nonDerivative · entry 1

Dickinson Judith · CIK 0001834234 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 173,564

F1 · shares: Represents 11,905 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048739 · tm2112600-8_4seq1.xml · nonDerivative · entry 1

Edge Justin · CIK 0001834272 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 452,090

F1 · shares: Represents 23,810 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048735 · tm2112600-5_4seq1.xml · nonDerivative · entry 1

Feehery William F · CIK 0001543193 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,313,051

F1 · shares: Represents 91,575 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048740 · tm2112600-9_4seq1.xml · nonDerivative · entry 1

Pedersen Leif E · CIK 0001559712 · President, Software

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 279,928

F1 · shares: Represents 23,810 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048737 · tm2112600-7_4seq1.xml · nonDerivative · entry 1

Schemick Michael Andrew · CIK 0001834300 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 896,843

F1 · shares: Represents 34,799 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048736 · tm2112600-6_4seq1.xml · nonDerivative · entry 1

Rayner Craig R. · CIK 0001834170 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 464,744

F1 · shares: Represents 23,810 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048733 · tm2112600-4_4seq1.xml · nonDerivative · entry 1

Traynor Richard M. · CIK 0001834465 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 358,287

F1 · shares: Represents 16,484 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048726 · tm2112600-2_4seq1.xml · nonDerivative · entry 1

Choe Jieun W. · CIK 0001834184 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 342,991

F1 · shares: Represents 18,315 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-048723 · tm2112600-1_4seq1.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · President, Simcyp

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 391,798

F1 · shares: Represents 18,315 restricted stock units ("RSUs") granted to the reporting person that will entitle the reporting person to receive one share of the Issuer's Common Stock per RSU. The RSUs will vest, and the underlying shares will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001415889-21-003012 · form4a-06152021_090648.xml · nonDerivative · entry 1

Rayner Craig R. · CIK 0001834170 · PRESIDENT, INTEGRATED DRUG DEV

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 479,396

F1 · shares: The original Form 4, filed on April 9, 2021, is being amended by this Form 4 amendment solely to correct an administrative error, which misreported the number of restricted stock units granted on April 1, 2021 as a total of 23,810 restricted stock units being issued when in fact, 38,462 restricted stock units were issued. As a result of this administrative error, the number of shares beneficially owned by the reporting person following the corrected transaction reflects an increase in the number of shares as beneficially owned by the reporting person by 14,652 shares. All 38,462 restricted stock units received by the reporting person will vest, and the underlying shares of the issuer's common stock will be concurrently issued in a series of three equal installments upon the reporting person's completion of each 12 month period of service over the period measured from April 1, 2021 to April 1, 2024, subject to the continued service of the reporting person through such vesting dates.

SEC source: 0001104659-21-044102 · tm2111278-1_4seq1.xml · nonDerivative · entry 1

EQT Avatar Parent L.P. · CIK 0001715533 · 10% owner

EQT Avatar Parent GP LLC · CIK 0001833933 · 10% owner

EQT Fund Management S.a r.l. · CIK 0001834239 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by EQT Avatar Parent L.P.

Disclosed balance after: 66,223,861

F1 · price: This amount represents the $25.00 secondary public offering price per share of common stock of Certara, Inc., less the underwriting discount of $0.875 per share.

F2 · ownership.nature: Consists of shares of common stock held directly by EQT Avatar Parent L.P. ("EQT Investor"). EQT Avatar Parent GP LLC ("Avatar Parent GP") is the general partner of the EQT Investor. Several investment vehicles collectedly make up the fund known as "EQT VII." EQT VII owns 100% of the membership interests in Avatar Parent GP. EQT Fund Management S.a r.l. ("EFMS") has exclusive responsibility for the management and control of the business and affairs of investment vehicles which constitute the majority of the total commitments to EQT VII. As such, EFMS has the power to control Avatar Parent GP's voting and investment decisions and may be deemed to have beneficial ownership of the securities held by the EQT Investor.