Konstantin Konstantinov - May 18, 2023 Form 4 Insider Report for REPLIGEN CORP (RGEN)

Role: Director
Signature: /s/ Kimberly Brown (Attorney in Fact)
Stock symbol: RGEN
Transactions as of: May 18, 2023
Transactions value $: $0
Form type: 4
Date filed: 5/22/2023, 09:19 PM
Previous filing: Mar 30, 2023
Next filing: May 20, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RGEN	Common Stock	Award	$0	+686	+128.46%	$0.00	1.22K	May 18, 2023	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RGEN	Stock Option (Right to Buy)	Award	$0	+1.49K		$0.00	1.49K	May 18, 2023	Common Stock	1.49K	$156.63	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Mr. Konstantinov was awarded 686 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest on May 18, 2024, one year from the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.
F2	Award vests in full on the earlier of May 18, 2024, one year from grant date, or on the date of the next annual meeting of the Company's shareholders, which has not yet been determined.

Content

Mr. Konstantinov was awarded 686 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of Repligen Corporation's Common Stock. The restricted stock units vest on May 18, 2024, one year from the grant date. The restricted stock units may be settled only by delivering shares of Repligen Corporation's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance.

Award vests in full on the earlier of May 18, 2024, one year from grant date, or on the date of the next annual meeting of the Company's shareholders, which has not yet been determined.