James Bylund

RGEN

James Bylund serves as Chief Operating Officer at Repligen Corporation (RGEN). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

9 trades

$2.32M

Net Position

Net Seller

$2.32M

Companies Traded

RGEN

Active Period

Apr 2021 – Nov 2025

9 total trades

Most Recent

Sell RGEN

Nov 18, 2025 · $331.3K

James Bylund's Insider Trading at Repligen Corporation (RGEN)

Buys

0 · $0.00

Sells

9 · $2.32M

Total Shares Bought

Total Shares Sold

12,620

RGEN Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Nov 18, 2025	Sell	2,191	$151.21	$331.3K	0
Apr 1, 2025	Sell	454	$128.50	$58.3K	0
Mar 13, 2025	Sell	175	$142.44	$24.9K	0
Mar 3, 2025	Sell	1,239	$155.38	$192.5K	0
Feb 27, 2025	Sell	1,285	$156.54	$201.2K	0
Feb 24, 2025	Sell	543	$164.74	$89.5K	0
Feb 26, 2024	Sell	4,373	$198.08	$866.2K	14,135
Aug 4, 2022	Sell	2,000	$240.40	$480.8K	9,733
Apr 8, 2021	Sell	360	$204.25	$73.5K	6,324