REPLIGEN CORP — Director's Dealing 2022

Jun 1, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REPLIGEN CORP (RGEN)
CIK: 0000730272
Period of Report: 2022-05-26

Reporting Person: Konstantinov Konstantin (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-05-26	Common Stock	A	534	$0.00	Acquired	534	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-05-26	Stock Option (Right to Buy)	$159.17	A	1298	Acquired	2032-05-26	Common Stock (1298)	Direct
2022-05-26	Stock Option (Right to Buy)	$159.17	A	2498	Acquired	2032-05-26	Common Stock (2498)	Direct

Footnotes

F1: Mr. Konstantinov was awarded 534 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 26, 2023, 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 May 26, 2023, one year from grant date.

F3: The shares vest in equal annual instalments over a three-year period with each such vesting date occurring on the earlier of the anniversary of the grant date or the date of the annual meeting of the Company's shareholders of the applicable year of such three-year period.