RTW INVESTMENTS, LP

Position in RGEN — Repligen Corp

CIK 1493215 NEW YORK, NY

Position in RGEN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$142,090,920

-$32,256,120 QoQ

Shares Held

1,206,000

+13.3% QoQ

Ownership

2.14%

of shares outstanding

% of Portfolio

1.41%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2025

2 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Mar 31, 2026

RTW INVESTMENTS, LP holds $246,623,720 across 3 Medical Instruments & Supplies names. RGEN ranks #1 (57.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RGEN	Repligen Corp This page	1,206,000	$142,090,920
2	ISRG	Intuitive Surgical Inc	220,000	$101,417,800
3	MDLN	Medline Inc.	70,000	$3,115,000

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$142,090,920	1,206,000	+13.3%	Shares	Sole	2026-05-15
2025-12-31	$174,347,040	1,064,000	—	Shares	Sole	2026-02-17
No filing history on record for this holder in this stock.