CERT

SEC source: 0001415889-22-003837 · form4-04052022_010451.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,939

Underlying: Common Stock · 25,939 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003837 · form4-04052022_010451.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 394,764

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 7,936 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 378,890 shares of common stock and 15,874 RSUs, each of which was previously reported in Table 1 of Form 4. Does, not include 25,939 newly-awarded RSUs which are reported in Table II.

SEC source: 0001415889-22-003834 · form4-04052022_010426.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 109,740

Underlying: Common Stock · 109,740 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003834 · form4-04052022_010426.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,168,796

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 30,525 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 2,107,746 shares of common stock and 61,050 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 109,740 newly-awarded RSUs which are reported in Table II.

SEC source: 0001415889-22-003832 · form4-04052022_010455.xml · derivative · entry 2

Pedersen Leif E · CIK 0001559712 · PRESIDENT, SOFTWARE

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,939

Underlying: Common Stock · 25,939 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003832 · form4-04052022_010455.xml · nonDerivative · entry 1

Pedersen Leif E · CIK 0001559712 · PRESIDENT, SOFTWARE

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 226,723

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 7,936 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 210,849 shares of common stock and 15,874 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 25,939 newly-awarded RSUs which are reported in Table II.

SEC source: 0001415889-22-003845 · form4-04052022_020437.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,962

Underlying: Common Stock · 15,962 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003845 · form4-04052022_020437.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 248,577

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 6,105 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 236,367 shares of common stock and 12,210 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 15,962 newly-awarded RSUs, which are reported in Table II.

SEC source: 0001415889-22-003843 · form4-04052022_010451.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,953

Underlying: Common Stock · 19,953 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003843 · form4-04052022_010451.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 209,564

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 5,494 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 198,574 shares of common stock and 10,990 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 19,953 newly-awarded RSUs which are reported in Table II.

SEC source: 0001415889-22-003841 · form4-04052022_010443.xml · derivative · entry 2

Schemick Michael Andrew · CIK 0001834300 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,906

Underlying: Common Stock · 39,906 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003841 · form4-04052022_010443.xml · nonDerivative · entry 1

Schemick Michael Andrew · CIK 0001834300 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 492,870

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 11,599 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 469,670 shares of common stock and 23,200 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 39,906 newly-awarded RSUs which are reported in Table II.

SEC source: 0001415889-22-003839 · form4-04052022_010448.xml · derivative · entry 2

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,939

Underlying: Common Stock · 25,939 shares

Expires 2025-04-01

F3 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F4 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003839 · form4-04052022_010448.xml · nonDerivative · entry 1

Aspbury Robert · CIK 0001834221 · PRESIDENT, SIMCYP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 276,099

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 6,105 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 258,394 shares of common stock and 17,705 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 25,939 newly-awarded RSUs, which are reported in Table II.

SEC source: 0001415889-22-003827 · form4-04052022_010425.xml · derivative · entry 3

SMITH PATRICK F · CIK 0001890360 · PRESIDENT, INTEGRATED DRUG DEV

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,939

Underlying: Common Stock · 25,939 shares

Expires 2025-04-01

F5 · derivative.exercise_price: Each RSU is granted under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof. The reporting person has reported prior awards of RSUs in Table 1 of Form 4.

F6 · derivative.exercise_date: The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025.

SEC source: 0001415889-22-003827 · form4-04052022_010425.xml · nonDerivative · entry 1

SMITH PATRICK F · CIK 0001890360 · PRESIDENT, INTEGRATED DRUG DEV

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,842

F1 · shares: Represents restricted stock units ("RSU") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 4,884 RSUs, previously granted to the reporting person on April 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2023 and April 1, 2024.

F2 · balance_after: The total reported in Column 5 includes 88,443 shares of common stock and 13,399 RSUs, each of which was previously reported in Table 1 of Form 4. Does not include 25,939 newly-awarded RSUs which are reported in Table II.

SEC source: 0001415889-22-003190 · form4-03182022_010341.xml · nonDerivative · entry 2

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,342,797

F2 · price: This transaction was executed in multiple trades at prices ranging from $20.00 to $20.54. 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: 0001415889-22-003130 · form4-03172022_010315.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,178,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $20.00 to $20.33. 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: 0001415889-22-003190 · form4-03182022_010341.xml · nonDerivative · entry 1

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,467,797

F1 · price: This transaction was executed in multiple trades at prices ranging from $20.00 to $20.33. 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: 0001415889-22-003193 · form4-03182022_010319.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 211,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 23, 2021.

SEC source: 0001415889-22-002931 · form4-03142022_010329.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,240,536

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $20.04 to $20.41. 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: 0001415889-22-001632 · form4-02222022_010223.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,268,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on on March 24, 2021.

F3 · price: This transaction was executed in multiple trades at prices ranging from $23.80 to $24.09. 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: 0001415889-22-001632 · form4-02222022_010223.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,272,757

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on on March 24, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $22.79 to $23.79. 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: 0001415889-22-001598 · form4-02222022_050246.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,343,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2021.

F4 · price: This transaction was executed in multiple trades at prices ranging from $25.38 to $25.72. 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: 0001415889-22-001598 · form4-02222022_050246.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,349,569

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2021.

F3 · price: (3) This transaction was executed in multiple trades at prices ranging from $24.37 to $25.37. 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: 0001415889-22-001598 · form4-02222022_050246.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,379,644

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 15, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $23.36 to $24.36. 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: 0001415889-22-000981 · form4-02022022_010218.xml · nonDerivative · entry 2

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,592,797

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 9, 2021.

F3 · price: This transaction was executed in multiple trades at prices ranging from $26.75 to $26.90. 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: 0001415889-22-000981 · form4-02022022_010218.xml · nonDerivative · entry 1

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,607,598

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 9, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $25.75 to $26.74. 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: 0001415889-22-000797 · form4-01272022_010151.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,433,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 24, 2021.

F3 · price: This transaction was executed in multiple trades at prices ranging from $25.43 to $26.19. 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: 0001415889-22-000797 · form4-01272022_010151.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,484,247

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 24, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $24.42 to $25.42. 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: 0001415889-22-000799 · form4-01272022_010138.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 214,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 23, 2021.

SEC source: 0001415889-22-000710 · form4-01212022_020153.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 397,090

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 8, 2021.

SEC source: 0001415889-22-000678 · form4-01202022_050155.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 217,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 23, 2021.

SEC source: 0001415889-22-000205 · form4-01042022_010130.xml · nonDerivative · entry 2

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,642,797

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 9, 2021.

F3 · price: This transaction was executed in multiple trades at prices ranging from $28.82 to $28.97. 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: 0001415889-22-000205 · form4-01042022_010130.xml · nonDerivative · entry 1

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,652,474

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 9, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $27.82 to $28.81. 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: 0001415889-21-006267 · form4-12282021_031242.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 222,287

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 23, 2021.

SEC source: 0001415889-21-006230 · form4-12272021_011215.xml · nonDerivative · entry 1

CASHMAN JAMES E III · CIK 0001199440 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 438,782

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 14, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $29.00 to $29.46. 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: 0001415889-21-006208 · form4-12232021_011248.xml · nonDerivative · entry 1

CASHMAN JAMES E III · CIK 0001199440 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 463,893

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 14, 2021.

SEC source: 0001415889-21-006207 · form4-12232021_011241.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,508,051

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 24, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $28.06 to $28.99. 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: 0001415889-21-006160 · form4-12212021_011207.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 250,491

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2021.

SEC source: 0001415889-21-006135 · form4-12202021_051233.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 257,991

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2021.

SEC source: 0001415889-21-005867 · form4-12142021_011228.xml · nonDerivative · entry 2

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,692,797

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 9, 2021.

SEC source: 0001415889-21-005867 · form4-12142021_011228.xml · nonDerivative · entry 1

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,692,897

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 9, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $27.51 to $28.40. 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: 0001415889-21-005782 · form4-12082021_011255.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,583,051

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 $27.72 to $28.15. 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: 0001415889-21-005782 · form4-12082021_011255.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,637,900

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 $26.72 to $27.71. 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: 0001415889-21-005731 · form4-12062021_011244.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,653,051

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 $26.38 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: 0001415889-21-005731 · form4-12062021_011244.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,656,551

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 $25.37 to $26.35. 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: 0001415889-21-005532 · form4-11262021_011125.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,723,051

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 $28.63 to $28.79. 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: 0001415889-21-005532 · form4-11262021_011125.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,740,530

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 $27.62 to $28.62. 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: 0001104659-21-143571 · tm2133816-2_4seq1.xml · nonDerivative · entry 1

SLAINE MASON P · CIK 0001079093 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,742,797

F1 · price: This amount represents the $31.00 public offering price per share of common stock of Certara, Inc., less the underwriting discount of $1.259 per share.