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RGEN insider trading — Repligen Corp

No open-market insider purchases or sales were filed for Repligen Corp (RGEN) in the last 90 days. Other insider transactions — such as stock awards, option exercises or tax withholding — are listed below.

Updated Oct 16, 2026.

Insider buying · 90d
$0
Insider selling · 90d
$0
Net · 90d
$0
Last 30 days
0B / 0S

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Recent RGEN insider transactions

Every Form 4 filed by Repligen Corp officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.

Trade dateInsiderRoleTypeOwnershipSharesPriceValueFiling
Oct 6, 2026Douglass Brian RobbCHIEF PRODUCT OFFICERA · Grant/awardDirect700——Form 4
Oct 5, 2026Loeillot OlivierChief Executive OfficerS · Sale · 10b5-1Direct5,535$187.29$1.04MForm 4
Oct 5, 2026Loeillot OlivierChief Executive OfficerM · Option exercise · 10b5-1Direct4,202$154.96$651KForm 4
Oct 2, 2026Loeillot OlivierChief Executive OfficerF · Tax withholdingDirect1,248$181.70$227KForm 4
Sep 25, 2026Garland Jason KCFOF · Tax withholdingDirect421$189.68$80KForm 4
Sep 24, 2026Loeillot OlivierChief Executive OfficerM · Option exercise · 10b5-1Direct12,946$155.11$2.01MForm 4
Sep 24, 2026Loeillot OlivierChief Executive OfficerS · Sale · 10b5-1Direct12,946$190.00$2.46MForm 4
Sep 21, 2026Loeillot OlivierChief Executive OfficerM · Option exercise · 10b5-1Direct5,426$141.79$769KForm 4
Sep 21, 2026Loeillot OlivierChief Executive OfficerS · Sale · 10b5-1Direct5,426$180.00$977KForm 4
Sep 4, 2026Loeillot OlivierChief Executive OfficerS · Sale · 10b5-1Direct3,035$165.90$504KForm 4
Sep 3, 2026Loeillot OlivierChief Executive OfficerF · Tax withholding · 10b5-1Direct2,842$169.61$482KForm 4
Sep 1, 2026Hughes ViolettaCHIEF ACCOUNTING OFFICERF · Tax withholdingDirect277$170.02$47KForm 4
Mar 5, 2026Hughes ViolettaCHIEF ACCOUNTING OFFICERA · Grant/awardDirect2,466——Form 4
Aug 20, 2026Loeillot OlivierChief Executive OfficerM · Option exercise · 10b5-1Direct5,426$141.79$769KForm 4
Aug 20, 2026Loeillot OlivierChief Executive OfficerS · Sale · 10b5-1Direct5,426$180.00$977KForm 4

RGEN insider trading FAQ

Are insiders buying RGEN stock?

Not on the open market. In the last 90 days, Repligen Corp insiders made no open-market purchases, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).

Who are the insiders trading RGEN?

No insider bought or sold on the open market in the last 90 days.

Where does RGEN insider trading data come from?

Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.

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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.