Brian Robb Douglass

CIK: 0002104618

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (50.0%)

Compensation grants

Other (G, F, J, C, D, …)2 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

RGEN

REPLIGEN CORP

Officer

Discretionary Trading P&L

Holdings

Transaction History (4 total)

RGEN
REPLIGEN CORP
Oct 6, 2026
Award(A)
Direct
700 shares-
RGEN
REPLIGEN CORP
May 7, 2026
Tax Payment(F)
Direct
334 shares at avg. $126.43$42K
RGEN
REPLIGEN CORP
Mar 2, 2026
Tax Payment(F)
Direct
221 shares at avg. $124.97$28K
RGEN
REPLIGEN CORP
Dec 31, 2025
Award(A)
Direct
2.3K shares-

		Type	Shares	Price		Ownership
Oct 6, 2026	RGEN REPLIGEN CORP	Award(A)	700	-	$0	Direct
May 7, 2026	RGEN REPLIGEN CORP	Tax Payment(F)	334	$126.43	$42,228	Direct
Mar 2, 2026	RGEN REPLIGEN CORP	Tax Payment(F)	221	$124.97	$27,618	Direct
Dec 31, 2025	RGEN REPLIGEN CORP	Award(A)	2,288	-	$0	Direct

1-4 of 4 transactions

About Douglass Brian Robb

Douglass Brian Robb (SEC CIK 0002104618) files insider reports with the SEC as CHIEF PRODUCT OFFICER of REPLIGEN CORP (RGEN).

Signal8 holds 5 ownership filings by Douglass Brian Robb (1 Form 3, 4 Form 4), filed between Jan 12, 2026 and Oct 8, 2026. Those filings report 4 transactions, from Dec 31, 2025 to Oct 6, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Douglass Brian Robb's filings is in WALTHAM, MA.

Recent filings by Douglass Brian Robb

Oct 6, 2026: Grant or award of RGEN shares (Form 4, code A).
May 7, 2026: Tax withholding of RGEN shares (Form 4, code F).
Mar 2, 2026: Tax withholding of RGEN shares (Form 4, code F).
Dec 31, 2025: Grant or award of RGEN shares (Form 4, code A).

Other insiders filing for REPLIGEN CORP (RGEN)

Loeillot Olivier, Chief Executive Officer
Garland Jason K, CFO
Hughes Violetta, CHIEF ACCOUNTING OFFICER
Madaus Martin D, Director
Konstantinov Konstantin, Director
Mhatre Rohin, Director

How to read Form 4 transaction codes