Chicago Capital Management, LLC

Position in CPRX — Catalyst Pharmaceuticals, Inc.

CIK 1580162 CHICAGO, IL

Position in CPRX

as of Jun 30, 2026 · filed Jul 22, 2026 Compact

Position Value

$3,854,889

New position

Shares Held

122,650

first reported quarter

Ownership

0.100%

of shares outstanding

% of Portfolio

6.14%

of 13F equity value

Holder Rank

#6

of 75 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 76% Shared 24% None 0%

Healthcare · as of Jun 30, 2026

Chicago Capital Management, LLC holds $33,657,232 across 4 Biotechnology names. CPRX ranks #3 (11.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NUVL	Nuvalent, Inc.	115,500	$14,264,250
2	APGE	Apogee Therapeutics, Inc.	97,100	$12,888,083
3	CPRX	Catalyst Pharmaceuticals, Inc. This page	122,650	$3,854,889
4	TECH	BIO-TECHNE Corp	37,509	$2,650,010

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$3,854,889	122,650	—	Shares	Other	2026-07-22
No filing history on record for this holder in this stock.