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:

Company Role Class Num Shares Value Price $ Report Date Ownership
REPLIGEN CORP Chief Operating Officer Common Stock 21,520 $3,254,039 $151.21 18 Nov 2025 Direct
REPLIGEN CORP Chief Operating Officer Stock Option (Right to Buy) 6,056 03 Mar 2025 Direct

Insider Reports Filed by James Bylund

Symbol Company Period Transactions Value $ Form Type Role Filing Time
RGEN REPLIGEN CORP 18 Nov 2025 1 -$331,301 4 Chief Operating Officer 19 Nov 2025, 16:30
RGEN REPLIGEN CORP 01 Apr 2025 1 -$58,339 4 Chief Operating Officer 02 Apr 2025, 10:33
RGEN REPLIGEN CORP 13 Mar 2025 2 -$24,927 4 Chief Operating Officer 20 Mar 2025, 13:51
RGEN REPLIGEN CORP 03 Mar 2025 3 -$192,516 4 Chief Operating Officer 04 Mar 2025, 13:29
RGEN REPLIGEN CORP 27 Feb 2025 1 -$201,154 4 Chief Operating Officer 28 Feb 2025, 16:29
RGEN REPLIGEN CORP 24 Feb 2025 1 -$89,454 4 Chief Operating Officer 25 Feb 2025, 10:27
RGEN REPLIGEN CORP 02 Apr 2024 1 -$81,230 4 Chief Operating Officer 04 Apr 2024, 17:04
RGEN REPLIGEN CORP 07 Mar 2024 1 -$236,038 4 Chief Operating Officer 07 Mar 2024, 16:23
RGEN REPLIGEN CORP 04 Mar 2024 2 -$42,517 4 Chief Operating Officer 06 Mar 2024, 20:06
RGEN REPLIGEN CORP 01 Mar 2024 1 $0 4 Chief Operating Officer 05 Mar 2024, 20:44
RGEN REPLIGEN CORP 29 Feb 2024 2 -$157,268 4 Chief Operating Officer 04 Mar 2024, 21:45
RGEN REPLIGEN CORP 27 Feb 2024 2 $0 4 Chief Operating Officer 29 Feb 2024, 21:25
RGEN REPLIGEN CORP 23 Feb 2024 3 -$777,534 4 Chief Operating Officer 26 Feb 2024, 20:38
RGEN REPLIGEN CORP 04 Apr 2023 1 -$54,592 4 Chief Operating Officer 04 Apr 2023, 21:37
RGEN REPLIGEN CORP 02 Mar 2023 4 -$39,480 4 Chief Operating Officer 06 Mar 2023, 16:13
RGEN REPLIGEN CORP 28 Feb 2023 1 -$103,023 4 Chief Operating Officer 28 Feb 2023, 18:54
RGEN REPLIGEN CORP 03 Aug 2022 3 -$292,140 4 Chief Operating Officer 04 Aug 2022, 16:32
RGEN REPLIGEN CORP 01 Apr 2022 1 -$62,987 4 Chief Operating Officer 04 Apr 2022, 17:57
RGEN REPLIGEN CORP 24 Feb 2022 3 -$35,571 4 Chief Operating Officer 28 Feb 2022, 18:07
RGEN REPLIGEN CORP 17 Feb 2022 2 -$60,928 4 Chief Operating Officer 22 Feb 2022, 18:37