InsiderTrades

Form 4 for RGEN REPLIGEN CORP

Accepted 2026-09-02 16:18:30 ET · period of report 2026-03-05 · accession 0001628280-26-060105 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-09-02 16:18 2026-03-05 RGEN Hughes Violetta CAO A - Grant $0.00 +2,466 6,608 +60% $0
2026-09-02 16:18 2026-09-01 RGEN Hughes Violetta CAO F - Tax $170.02 -277 6,331 -4% -$47.1K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-05 A A 2,466 $0.00 6,608 D — — (F1) Ms. Hughes was awarded 2,466 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 in equal annual installments over a four-year period beginning on the first anniversary of 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.
2 Common Common Stock 2026-09-01 F D 277 $170.02 6,331 D — — (F2) Represents the number of shares withheld by the Issuer to satisfy the tax withholding obligations of the reporting person that arose upon the release of restricted stock units.