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SEC Form 4 research

REPLIGEN CORP insider transactions

Inspect REPLIGEN CORP's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0000730272
Reporting owners
46
Officers and directors
24
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-10-082026-10-06Douglass Brian RobbA700$0Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-06 and its public availability date is 2026-10-08. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001628280-26-065462 ↗SEC accession 0001628280-26-065462 ↗SEC accession 0001628280-26-065238 ↗

Recent insider disclosures

Inspect all 11 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Scroll sideways to compare all columns. Select a heading to sort.

2026-10-082026-10-06Douglass Brian RobbA700$0Not reported
2026-10-082026-10-06Douglass Brian RobbA675$0Not reported
2026-10-062026-10-05Loeillot OlivierS4,202$190Not reported
2026-10-062026-10-05Loeillot OlivierS1,333$178.75Not reported
2026-09-252026-09-24Loeillot OlivierS4,542$190Not reported
2026-09-252026-09-24Loeillot OlivierS8,404$190Not reported
2026-09-222026-09-21Loeillot OlivierS5,426$180Not reported
2026-09-082026-09-04Loeillot OlivierS3,035$165.9Not reported
2026-09-032026-03-05Hughes ViolettaA2,466$0Not reported
2026-08-222026-08-20Loeillot OlivierS5,426$180Not reported
2026-07-182026-07-16Garland Jason KS530$150Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 26 displayed rows: Officers and directors in the directory

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Bylund James00018496424
DAWES KAREN A000126150694
Gebski Christine00018495855
EGLINTON MANNER CARRIE00016967767
Cox John000149842838
Madaus Martin D000131026898
BARTHELEMY NICOLAS000128357672
Benjamin Howard00013935478
COOPER GLENN L MD00010463519
Garland Jason K00017545552
Goldberg Alfred Lewis00014389471
GRIFFITH MICHAEL A00012418217
Henry Earl Webb00014218912
HERLIHY WALTER C000124102928
Hunt Anthony0001606030133
Kelly William J000143111414
KURIYEL RALF000173314330
LANDY HAL00012410341
Loeillot Olivier00019955259
Pax Margaret00019997721
RICH ALEXANDER00012364458
RUSCHE JAMES R000124103120
RYAN THOMAS F JR000126336642
Snodgres Jon000161349839
Whitehouse Laura00012894285
WITT DANIEL P000124103026
Bylund James ↗DAWES KAREN A ↗Gebski Christine ↗EGLINTON MANNER CARRIE ↗Cox John ↗Madaus Martin D ↗BARTHELEMY NICOLAS ↗Benjamin Howard ↗COOPER GLENN L MD ↗Garland Jason K ↗Goldberg Alfred Lewis ↗GRIFFITH MICHAEL A ↗Henry Earl Webb ↗HERLIHY WALTER C ↗Hunt Anthony ↗Kelly William J ↗KURIYEL RALF ↗LANDY HAL ↗Loeillot Olivier ↗Pax Margaret ↗RICH ALEXANDER ↗RUSCHE JAMES R ↗RYAN THOMAS F JR ↗Snodgres Jon ↗Whitehouse Laura ↗WITT DANIEL P ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.