Insider filing · RGEN
James Bylund
Chief Operating Officer
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Repligen Corporation
RGEN · Healthcare · 16 filings in 24 months
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James Bylund sold $331K of Repligen (RGEN)
Executed Nov 18 2025, disclosed Nov 19 2025, 1 day later.
Value, as filed
$331K
2,191 sh × $151.21
Executed
Nov 18 2025
the trade date, as filed
Disclosed
Nov 19 2025
1 day after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
JBJames Bylund (Chief Operating Officer) filed 1 Form 4 report in the trailing twelve months (0 purchases, 1 sale), most often in Repligen Corporation (RGEN). The largest single filing was $331K of RGEN (2,191 sh × $151.21, as filed), executed Nov 18 2025.
The name
RGENHealthcare · Repligen Corporation, a life sciences company, develops and commercializes bioprocessing technologies and systems in North America, Europe,…
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