EcoR1 Capital, LLC

Position in CGON — CG Oncology, Inc.

CIK 1587114 San Francisco, CA

Back to CGON Full portfolio

Position in CGON

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$106,170,015

+$31,586,655 QoQ

Shares Held

1,494,300

+35.6% QoQ

Ownership

1.69%

of shares outstanding

% of Portfolio

5.26%

of 13F equity value

Holder Rank

#15

of 226 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in CGON Over Time

Shares Held

Position Value (USD)

Derivatives in CGON

reported options exposure · as of Jun 30, 2026

CallValue

$39,894,575

CallShares

561,500

PutValue

PutShares

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Jun 30, 2026

EcoR1 Capital, LLC holds $1,935,887,028 across 29 Biotechnology names. CGON ranks #4 (5.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ZYME	Zymeworks Inc.	22,970,388	$600,445,942
2	ANAB	Anaptysbio, Inc	7,880,094	$531,906,345
3	AKTS	Aktis Oncology, Inc.	4,824,469	$155,492,635
4	CGON	CG Oncology, Inc. This page	1,494,300	$106,170,015
5	CRSP	CRISPR Therapeutics AG	1,389,276	$75,771,113
6	ORIC	Oric Pharmaceuticals, Inc.	6,728,116	$72,865,496
7	TRAX	First Tracks Biotherapeutics, Inc.	3,174,519	$63,871,322
8	LKFT	Lakefront Biotherapeutics NV	1,667,119	$49,980,227

All Filings in CGON

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5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$106,170,015	1,494,300	+35.6%	Shares	Sole	2026-08-14
2026-06-30	$39,894,575	561,500	+91.8%	Call	Sole	2026-08-14
2026-03-31	$74,583,360	1,102,000	+42.7%	Shares	Sole	2026-05-15
2025-12-31	$32,053,440	772,000	—	Shares	Sole	2026-02-17
2025-12-31	$12,157,056	292,800	—	Call	Sole	2026-02-17
No filing history on record for this holder in this stock.