Konstantin Konstantinov - May 16, 2024 Form 4 Insider Report for REPLIGEN CORP (RGEN)

Role: Director
Signature: /s/ Kimberly Brown (Attorney in Fact)
Stock symbol: RGEN
Transactions as of: May 16, 2024
Transactions value $: $0
Form type: 4
Date filed: 5/20/2024, 07:27 PM
Previous filing: May 22, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	Price $	Shares After	Date	Ownership	Footnotes
transaction	RGEN	Common Stock	Award	$0	+701	+57.46%	$0.00	1.92 K	May 16, 2024	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	+1.38 K		$0.00	1.38 K	May 16, 2024	Common Stock	1.38 K	$171.03	Direct	F2

Explanation of Responses:

Id	Content
F1	Mr. Konstantinov was awarded 701 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 the earlier of May 16, 2025, one year from the grant date, or the date of the next annual meeting of the Company's shareholders, which has not yet been determined. 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 16, 2025, 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 701 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 the earlier of May 16, 2025, one year from the grant date, or the date of the next annual meeting of the Company's shareholders, which has not yet been determined. 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 16, 2025, 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.