Are insiders buying RGEN stock?

Yes — 4 distinct insiders have bought RGEN (REPLIGEN CORP) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 12, 2025.

How much RGEN stock have insiders bought?

Insiders have bought a combined $752.2K of RGEN across 5 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in RGEN?

A cluster buy is two or more distinct REPLIGEN CORP insiders — officers, directors, or 10% owners — each buying RGEN on the open market within a rolling window. RGEN has 1 detected cluster buy to date.

Where does this RGEN insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

RGEN insider buying

1 cluster buy

REPLIGEN CORP · Healthcare

When two or more insiders at REPLIGEN CORP buy RGEN in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in RGEN plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$752.2K

Market cap

$8.0B

Detected clusters

Jun 14 – Jun 14, 2024
Detected Jun 14, 2024
Executive buyer3 insiders
Total bought
$512.7K
Market cap
$8.0B

All notable open-market buys in RGEN

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Aug 8, 2025	Madaus Martin D Director	1,800	$112.13	$201.8K	SEC ↗
Mar 17, 2025	Pax Margaret Director	250	$150.69	$37.7K	SEC ↗
Jun 14, 2024	Hunt Anthonycluster Chief Executive Officer	2,000	$124.08	$248.2K	SEC ↗
Jun 14, 2024	BARTHELEMY NICOLAScluster Director	1,200	$125.45	$150.5K	SEC ↗
Jun 14, 2024	Madaus Martin Dcluster Director	915	$124.54	$114.0K	SEC ↗

More Healthcare stocks with insider cluster buys

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RGEN insider buying — FAQ

Are insiders buying RGEN stock?: Yes — 4 distinct insiders have bought RGEN (REPLIGEN CORP) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Aug 12, 2025.
How much RGEN stock have insiders bought?: Insiders have bought a combined $752.2K of RGEN across 5 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in RGEN?: A cluster buy is two or more distinct REPLIGEN CORP insiders — officers, directors, or 10% owners — each buying RGEN on the open market within a rolling window. RGEN has 1 detected cluster buy to date.
Where does this RGEN insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in RGEN

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy RGEN within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding RGEN.