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The PSUs were vested and settled on April 1, 2025."}],"balance_after":296396,"source":{"system":"sec-edgar","filing":"0001415889-25-009987","document":"form4-04032025_080435.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588925009987/form4-04032025_080435.xml","form_type":"4"}},{"id":1461935,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SCIENTIFIC SOFTWARE"}}],"security":"Common Stock","published_at":"2024-07-02T20:24:55.000Z","date":"2024-07-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":862,"price":13.85,"value":11938.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSU\") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 1,832 RSUs, previously granted to the reporting person on July 1, 2021."}],"balance_after":289314,"source":{"system":"sec-edgar","filing":"0001415889-24-018891","document":"form4-07022024_080752.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924018891/form4-07022024_080752.xml","form_type":"4"}},{"id":1548328,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Restricted Stock Units","published_at":"2024-04-03T21:00:48.000Z","date":"2024-04-01","kind":"grant","planned":false,"acquired":true,"shares":30381,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each RSU was granted on April 1, 2024, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  The RSUs will vest and settle in three equal installments on April 1, 2025, April 1, 2026 and April 1, 2027."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Each RSU was granted on April 1, 2024, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  The RSUs will vest and settle in three equal installments on April 1, 2025, April 1, 2026 and April 1, 2027."}],"balance_after":30381,"derivative":{"expiration_date":"2027-04-01","underlying":"Common Stock","underlying_shares":30381},"source":{"system":"sec-edgar","filing":"0001415889-24-010061","document":"form4-04032024_090429.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924010061/form4-04032024_090429.xml","form_type":"4"}},{"id":1548327,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Restricted Stock Units","published_at":"2024-04-03T21:00:48.000Z","date":"2024-04-01","kind":"exercise","planned":false,"acquired":false,"shares":7852,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each RSU was granted on April 1, 2023, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  One-third of the RSUs vested and were settled on April 1, 2024.  The remaining two-thirds of the RSUs are scheduled to vest and settle in equal parts on April 1, 2025 and April 1, 2026."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Each RSU was granted on April 1, 2023, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  One-third of the RSUs vested and were settled on April 1, 2024.  The remaining two-thirds of the RSUs are scheduled to vest and settle in equal parts on April 1, 2025 and April 1, 2026."}],"balance_after":15704,"derivative":{"expiration_date":"2026-04-01","underlying":"Common Stock","underlying_shares":7852},"source":{"system":"sec-edgar","filing":"0001415889-24-010061","document":"form4-04032024_090429.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924010061/form4-04032024_090429.xml","form_type":"4"}},{"id":1548326,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Restricted Stock Units","published_at":"2024-04-03T21:00:48.000Z","date":"2024-04-01","kind":"exercise","planned":false,"acquired":false,"shares":8646,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU was granted on April 1, 2022, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  One-third of the RSUs vested and were settled on March 31, 2023. One-third of the RSUs vested and were settled on April 1, 2024. The remaining one-third of the RSUs are scheduled to vest and settle on April 1, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Each RSU was granted on April 1, 2022, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  One-third of the RSUs vested and were settled on March 31, 2023. One-third of the RSUs vested and were settled on April 1, 2024. 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One-third of the RSUs vested and were settled on April 1, 2024.  The remaining two-thirds of the RSUs are scheduled to vest and settle in equal parts on April 1, 2025 and April 1, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The total reported in Column 5 includes 7,937 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":293867,"source":{"system":"sec-edgar","filing":"0001415889-24-010061","document":"form4-04032024_090429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924010061/form4-04032024_090429.xml","form_type":"4"}},{"id":1548323,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Common Stock","published_at":"2024-04-03T21:00:48.000Z","date":"2024-04-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":4064,"price":17.88,"value":72664.32,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents RSUs of Certara withheld to satisfy tax withholding obligations in connection with the vesting of RSUs described in footnotes, 1, 4, and 5, exempt under Rule 16b-3."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The total reported in Column 5 includes 7,937 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":286015,"source":{"system":"sec-edgar","filing":"0001415889-24-010061","document":"form4-04032024_090429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924010061/form4-04032024_090429.xml","form_type":"4"}},{"id":1548322,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Common Stock","published_at":"2024-04-03T21:00:48.000Z","date":"2024-04-01","kind":"exercise","planned":false,"acquired":true,"shares":8646,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Each RSU was granted on April 1, 2022, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent.  One-third of the RSUs vested and were settled on March 31, 2023. One-third of the RSUs vested and were settled on April 1, 2024. The remaining one-third of the RSUs are scheduled to vest and settle on April 1, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The total reported in Column 5 includes 7,937 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":290079,"source":{"system":"sec-edgar","filing":"0001415889-24-010061","document":"form4-04032024_090429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924010061/form4-04032024_090429.xml","form_type":"4"}},{"id":1548321,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Common Stock","published_at":"2024-04-03T21:00:48.000Z","date":"2024-04-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":2870,"price":17.88,"value":51315.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Each RSU was granted on April 1, 2021, under the Certara, Inc. 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The remaining one-third of the RSUs vested and were settled on April 1, 2024."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents RSUs of Certara withheld to satisfy tax withholding obligations in connection with the vesting of RSUs described in footnotes, 1, 4, and 5, exempt under Rule 16b-3."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The total reported in Column 5 includes 7,937 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":281433,"source":{"system":"sec-edgar","filing":"0001415889-24-010061","document":"form4-04032024_090429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924010061/form4-04032024_090429.xml","form_type":"4"}},{"id":1590665,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Common Stock","published_at":"2024-03-06T21:26:57.000Z","date":"2024-03-05","kind":"tax_withholding","planned":false,"acquired":false,"shares":1689,"price":18.88,"value":31888.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Represents shares of the issuer withheld to satisfy tax withholding obligations in connection with the vesting of PSUs described in footnote 3."}],"balance_after":284303,"source":{"system":"sec-edgar","filing":"0001415889-24-007036","document":"form4-03062024_090345.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588924007036/form4-03062024_090345.xml","form_type":"4"}},{"id":1590664,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT; SCIENTIFIC SOFTWARE"}}],"security":"Common Stock","published_at":"2024-03-06T21:26:57.000Z","date":"2024-03-05","kind":"grant","planned":false,"acquired":true,"shares":3589,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each PSU was granted on July 1, 2021, under the Certara, Inc. 2020 Incentive Plan and represents a right to receive one share of common stock. 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The remaining one-third of the RSUs are scheduled to vest and settle on July 1, 2024."}],"balance_after":276065,"source":{"system":"sec-edgar","filing":"0001415889-23-010592","document":"form4-07032023_090711.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588923010592/form4-07032023_090711.xml","form_type":"4"}},{"id":1931718,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Restricted Stock Units","published_at":"2023-04-03T20:42:17.000Z","date":"2023-04-01","kind":"exercise","planned":false,"acquired":true,"shares":23556,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each RSU was granted on April 1, 2023, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof.  The RSUs will vest and settle in three equal installments on April 1, 2024, April 1, 2025, and April 1, 2026."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Each RSU was granted on April 1, 2023, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof.  The RSUs will vest and settle in three equal installments on April 1, 2024, April 1, 2025, and April 1, 2026."}],"balance_after":23556,"derivative":{"expiration_date":"2026-04-01","underlying":"Common Stock","underlying_shares":23556},"source":{"system":"sec-edgar","filing":"0001415889-23-005801","document":"form4-04032023_080407.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588923005801/form4-04032023_080407.xml","form_type":"4"}},{"id":1931717,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Restricted Stock Units","published_at":"2023-04-03T20:42:17.000Z","date":"2023-03-31","kind":"exercise","planned":false,"acquired":false,"shares":8646,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU was granted on April 1, 2022, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof.  One-third of the RSUs vested and were settled on March 31, 2023.  The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2024, and April 1, 2025."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each RSU was granted on April 1, 2022, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof.  One-third of the RSUs vested and were settled on March 31, 2023.  The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2024, and April 1, 2025."}],"balance_after":17293,"derivative":{"expiration_date":"2025-04-01","underlying":"Common Stock","underlying_shares":8646},"source":{"system":"sec-edgar","filing":"0001415889-23-005801","document":"form4-04032023_080407.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588923005801/form4-04032023_080407.xml","form_type":"4"}},{"id":1931716,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2023-04-03T20:42:17.000Z","date":"2023-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":4064,"price":23.8,"value":96723.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents  RSUs withheld to satisfy the tax withholding obligations in connection with the vesting and settlement of RSUs, exempt under Rule 16b-3."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The total reported in Column 5 includes 9,769 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":276927,"source":{"system":"sec-edgar","filing":"0001415889-23-005801","document":"form4-04032023_080407.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588923005801/form4-04032023_080407.xml","form_type":"4"}},{"id":1931715,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2023-04-03T20:42:17.000Z","date":"2023-03-31","kind":"exercise","planned":false,"acquired":true,"shares":8646,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Each RSU was granted on April 1, 2022, under the 2020 Incentive Plan and represents a right to receive one share of common stock or the cash equivalent thereof.  One-third of the RSUs vested and were settled on March 31, 2023.  The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on April 1, 2024, and April 1, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The total reported in Column 5 includes 9,769 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":280991,"source":{"system":"sec-edgar","filing":"0001415889-23-005801","document":"form4-04032023_080407.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588923005801/form4-04032023_080407.xml","form_type":"4"}},{"id":1931714,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2023-04-03T20:42:17.000Z","date":"2023-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":2870,"price":23.8,"value":68306.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSUs\") withheld to satisfy the tax withholding obligations in connection with the vesting and settlement of RSUs, exempt under Rule 16b-3.  Each RSUs was granted on April 1, 2021, under the Certara, Inc. 2020 Incentive Plan (the \"2020 Incentive Plan\") and represents a right to receive one share of common stock or the cash equivalent thereof.  One-third of the RSUs vested and were settled on April 1, 2022.  One-third of the RSUs vested and were on March 31, 2023.  The remaining one-third of the RSUs are scheduled to vest and settle on April 1, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The total reported in Column 5 includes 9,769 RSUs which was previously reported in Table 1 of Form 4."}],"balance_after":272345,"source":{"system":"sec-edgar","filing":"0001415889-23-005801","document":"form4-04032023_080407.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588923005801/form4-04032023_080407.xml","form_type":"4"}},{"id":2213748,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2022-07-05T20:49:21.000Z","date":"2022-07-01","kind":"tax_withholding","acquired":false,"shares":884,"price":21.46,"value":18970.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSU\") withheld to satisfy tax withholding obligations in connection with the vesting and settlement of 1,831 RSUs, previously granted to the reporting person on July 1, 2021. The remaining two-thirds of the RSUs are scheduled to vest and settle in two equal installments on July 1, 2023 and July 1, 2024."}],"balance_after":275215,"source":{"system":"sec-edgar","filing":"0001415889-22-007359","document":"form4-07052022_010705.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588922007359/form4-07052022_010705.xml","form_type":"4"}},{"id":2303184,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Restricted Stock Units","published_at":"2022-04-05T20:52:02.000Z","date":"2022-04-01","kind":"grant","acquired":true,"shares":25939,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs will vest and settle in three equal installments on April 1, 2023, April 1, 2024 and April 1, 2025."}],"balance_after":25939,"derivative":{"expiration_date":"2025-04-01","underlying":"Common Stock","underlying_shares":25939},"source":{"system":"sec-edgar","filing":"0001415889-22-003839","document":"form4-04052022_010448.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588922003839/form4-04052022_010448.xml","form_type":"4"}},{"id":2303183,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2022-04-05T20:52:02.000Z","date":"2022-04-01","kind":"tax_withholding","acquired":false,"shares":2870,"price":21.48,"value":61647.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"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."}],"balance_after":276099,"source":{"system":"sec-edgar","filing":"0001415889-22-003839","document":"form4-04052022_010448.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588922003839/form4-04052022_010448.xml","form_type":"4"}},{"id":2512181,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-11-15T21:47:42.000Z","date":"2021-11-11","kind":"sale","acquired":false,"shares":4592,"price":40.06,"value":183955.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $39.92 to $40.45. 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."}],"balance_after":278969,"source":{"system":"sec-edgar","filing":"0001415889-21-005198","document":"form4-11152021_011132.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921005198/form4-11152021_011132.xml","form_type":"4"}},{"id":2512180,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-11-15T21:47:42.000Z","date":"2021-11-11","kind":"sale","acquired":false,"shares":16962,"price":39.43,"value":668811.66,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $38.91 to $39.91. 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."}],"balance_after":283561,"source":{"system":"sec-edgar","filing":"0001415889-21-005198","document":"form4-11152021_011132.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921005198/form4-11152021_011132.xml","form_type":"4"}},{"id":2551114,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-10-04T21:52:31.000Z","date":"2021-10-01","kind":"sale","acquired":false,"shares":2767,"price":34.24,"value":94742.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $33.83 to $34.55. 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."}],"balance_after":300523,"source":{"system":"sec-edgar","filing":"0001415889-21-004719","document":"form4-10042021_021018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921004719/form4-10042021_021018.xml","form_type":"4"}},{"id":2551113,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-10-04T21:52:31.000Z","date":"2021-10-01","kind":"sale","acquired":false,"shares":16587,"price":33.39,"value":553839.93,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $32.82 to $33.82. 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."}],"balance_after":303290,"source":{"system":"sec-edgar","filing":"0001415889-21-004719","document":"form4-10042021_021018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921004719/form4-10042021_021018.xml","form_type":"4"}},{"id":2580887,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-09-02T20:34:00.000Z","date":"2021-09-01","kind":"sale","acquired":false,"shares":800,"price":34.24,"value":27392.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $34.17 to $34.28. 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."}],"balance_after":319877,"source":{"system":"sec-edgar","filing":"0001415889-21-004189","document":"form4-09022021_010942.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921004189/form4-09022021_010942.xml","form_type":"4"}},{"id":2580886,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-09-02T20:34:00.000Z","date":"2021-09-01","kind":"sale","acquired":false,"shares":18554,"price":33.76,"value":626383.04,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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."}],"balance_after":320677,"source":{"system":"sec-edgar","filing":"0001415889-21-004189","document":"form4-09022021_010942.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921004189/form4-09022021_010942.xml","form_type":"4"}},{"id":2603246,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-08-13T21:06:04.000Z","date":"2021-08-11","kind":"sale","acquired":false,"shares":19354,"price":27.54,"value":533009.16,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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."}],"balance_after":339231,"source":{"system":"sec-edgar","filing":"0001415889-21-003915","document":"form4-08132021_020840.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921003915/form4-08132021_020840.xml","form_type":"4"}},{"id":2640291,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-07-06T20:36:15.000Z","date":"2021-07-01","kind":"sale","acquired":false,"shares":19354,"price":28.03,"value":542492.62,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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."}],"balance_after":358585,"source":{"system":"sec-edgar","filing":"0001415889-21-003481","document":"form4-07062021_010751.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921003481/form4-07062021_010751.xml","form_type":"4"}},{"id":2647045,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-07-01T21:46:46.000Z","date":"2021-07-01","kind":"grant","acquired":true,"shares":5495,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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"}],"balance_after":377939,"source":{"system":"sec-edgar","filing":"0001415889-21-003353","document":"form4-07012021_020727.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921003353/form4-07012021_020727.xml","form_type":"4"}},{"id":2667489,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-06-15T16:26:43.000Z","date":"2021-06-14","kind":"sale","acquired":false,"shares":3007,"price":28.11,"value":84526.77,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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."}],"balance_after":372444,"source":{"system":"sec-edgar","filing":"0001415889-21-003015","document":"form4-06152021_090629.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921003015/form4-06152021_090629.xml","form_type":"4"}},{"id":2667488,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT, SIMCYP"}}],"security":"Common Stock","published_at":"2021-06-15T16:26:43.000Z","date":"2021-06-14","kind":"sale","acquired":false,"shares":16347,"price":27.49,"value":449379.03,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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."}],"balance_after":375451,"source":{"system":"sec-edgar","filing":"0001415889-21-003015","document":"form4-06152021_090629.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000141588921003015/form4-06152021_090629.xml","form_type":"4"}},{"id":2751759,"issuer":{"id":787,"kind":"organization","name":"Certara, Inc.","symbol":"CERT"},"owners":[{"id":47578,"kind":"person","name":"Aspbury Robert","position":1,"cik":"0001834221","reported_name":"Aspbury Robert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, Simcyp"}}],"security":"Common Stock","published_at":"2021-04-09T20:21:04.000Z","date":"2021-04-01","kind":"grant","acquired":true,"shares":18315,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":391798,"source":{"system":"sec-edgar","filing":"0001104659-21-048723","document":"tm2112600-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827090/000110465921048723/tm2112600-1_4seq1.xml","form_type":"4"}}]}