REPLIGEN CORP (RGEN) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-26

REPLIGEN CORP (RGEN) has filed 12 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-26. 2 Form 8-K material event filings were reported by RGEN in the last 90 days. 2 Form 144 notices of proposed sale were filed for RGEN stock. InsiderAlpha tracks every RGEN SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About REPLIGEN CORP (RGEN)

SIC classificationBiological Products, (No Diagnostic Substances) (SIC 2836)
SEC CIK0000730272

90-Day SEC Filing Activity

Form 4 filings (90d)12
Form 8-K filings (90d)2
Form 144 notices (90d)2
Latest Form 4 filing2026-06-26

Recent RGEN Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Garland Jason KCFOS — Open-market sale733$145.00$106KSEC
Konstantinov KonstantinInsiderA — Grant or award995$0.00—SEC
EGLINTON MANNER CARRIEInsiderA — Grant or award995$0.00—SEC
Mhatre RohinInsiderA — Grant or award995$0.00—SEC
Pax MargaretInsiderA — Grant or award995$0.00—SEC
DAWES KAREN AInsiderA — Grant or award995$0.00—SEC
MUIR GLENN PInsiderA — Grant or award995$0.00—SEC
Madaus Martin DInsiderA — Grant or award995$0.00—SEC
BARTHELEMY NICOLASInsiderA — Grant or award995$0.00—SEC
Douglass Brian RobbCHIEF PRODUCT OFFICERF — Tax withholding / forfeiture334$126.43$42KSEC
MUIR GLENN PInsiderM — Option exercise2.4K$38.76$94KSEC
Loeillot OlivierChief Executive OfficerS — Open-market sale3.8K$140.00$536KSEC
Garland Jason KCFOA — Grant or award7.8K$0.00—SEC
KURIYEL RALFSenior VP, R&DA — Grant or award5.3K$0.00—SEC
Loeillot OlivierChief Executive OfficerA — Grant or award24.1K$0.00—SEC

All transactions sourced from SEC EDGAR Form 4 filings for REPLIGEN CORP (RGEN). Updated in real time as new filings are submitted to the SEC.

Most-Active RGEN Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
MUIR GLENN P4$94K
DAWES KAREN A2—
EGLINTON MANNER CARRIE2—
Madaus Martin D2—
BARTHELEMY NICOLAS2—

Recent RGEN Form 8-K Material Events

Recent RGEN Form 144 Notices of Proposed Sale

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in RGEN insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

RGEN Insider Trading — FAQ

What is the latest insider trade for RGEN?
REPLIGEN CORP (RGEN) had 12 insider filings in the last 90 days, with the most recent on 2026-06-26. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying RGEN stock?
0 insider purchases of RGEN were filed in the last 90 days.
How many insiders are selling RGEN stock?
0 insider sales of RGEN were filed in the last 90 days.
Where can I see RGEN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every RGEN SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Related Companies — Recent Insider Activity

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