James Bylund

Insider Reports History

Location
Waltham, MA
Signature
/s/ Jennifer Carmichael (Attorney in Fact)
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by James Bylund:

Stock Role Class Num Shares Value Price $ Report Date Ownership
REPLIGEN CORP Chief Operating Officer Common Stock 21.5K $3.25M $151.21 Nov 18, 2025 Direct
REPLIGEN CORP Chief Operating Officer Stock Option (Right to Buy) 6.06K Mar 3, 2025 Direct

Insider Reports Filed by James Bylund

Symbol Company Period Transactions Value $ Form Type Date Filed Role
RGEN REPLIGEN CORP Nov 18, 2025 1 -$331K 4 Nov 19, 2025 Chief Operating Officer
RGEN REPLIGEN CORP Apr 1, 2025 1 -$58.3K 4 Apr 2, 2025 Chief Operating Officer
RGEN REPLIGEN CORP Mar 13, 2025 2 -$24.9K 4 Mar 20, 2025 Chief Operating Officer
RGEN REPLIGEN CORP Mar 3, 2025 3 -$193K 4 Mar 4, 2025 Chief Operating Officer
RGEN REPLIGEN CORP Feb 27, 2025 1 -$201K 4 Feb 28, 2025 Chief Operating Officer
RGEN REPLIGEN CORP Feb 24, 2025 1 -$89.5K 4 Feb 25, 2025 Chief Operating Officer
RGEN REPLIGEN CORP Apr 2, 2024 1 -$81.2K 4 Apr 4, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Mar 7, 2024 1 -$236K 4 Mar 7, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Mar 4, 2024 2 -$42.5K 4 Mar 6, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Mar 1, 2024 1 $0 4 Mar 5, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Feb 29, 2024 2 -$157K 4 Mar 4, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Feb 27, 2024 2 $0 4 Feb 29, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Feb 23, 2024 3 -$778K 4 Feb 26, 2024 Chief Operating Officer
RGEN REPLIGEN CORP Apr 4, 2023 1 -$54.6K 4 Apr 4, 2023 Chief Operating Officer
RGEN REPLIGEN CORP Mar 2, 2023 4 -$39.5K 4 Mar 6, 2023 Chief Operating Officer
RGEN REPLIGEN CORP Feb 28, 2023 1 -$103K 4 Feb 28, 2023 Chief Operating Officer
RGEN REPLIGEN CORP Aug 3, 2022 3 -$292K 4 Aug 4, 2022 Chief Operating Officer
RGEN REPLIGEN CORP Apr 1, 2022 1 -$63K 4 Apr 4, 2022 Chief Operating Officer
RGEN REPLIGEN CORP Feb 24, 2022 3 -$35.6K 4 Feb 28, 2022 Chief Operating Officer
RGEN REPLIGEN CORP Feb 17, 2022 2 -$60.9K 4 Feb 22, 2022 Chief Operating Officer