Craig R. Rayner - Apr 1, 2021 Form 4/A - Amendment Insider Report for Certara, Inc. (CERT)

Role: PRESIDENT, INTEGRATED DRUG DEV
Signature: /s/ Richard M. Traynor, Attorney-in Fact for Craig R. Rayner
Stock symbol: CERT
Transactions as of: Apr 1, 2021
Transactions value $: $0
Form type: 4/A - Amendment
Date filed: 6/15/2021, 12:23 PM
Date Of Original Report: Apr 9, 2021
Next filing: Jun 15, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CERT	Common Stock	Award	$0	+38.5K	+8.72%	$0.00	479K	Apr 1, 2021	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.

Content

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.