CG Oncology CGON Insider Ownership

NASDAQ CGON

$61.93 +1.97 (+3.29%)

As of: Oct 20, 2026 · 3:59 PM EDT

Insider Holdings by Owner

12.89Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

10.34%

■0% pp QoQ

Shares Held by Insiders

9.13Mn

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

88.31Mn

88,306,390 shares

Direct Holdings

816.16K

Indirect: 8.31Mn

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 11, 2026

Over the past year, CGON insiders bought $24.81 million of stock (371.08K shares) and sold $4.82 million (70.84K shares) on the open market.

Counted by insider, open-market buying of CGON stock in the past 12 months came from one insider and selling from 2 insiders.
Among CG Oncology's insiders, Brian Guan-Chyun Liu (Director) was the largest open-market buyer over the past 12 months, purchasing $24.81 million of stock (371.08K shares), most recently on June 25, 2026.
Conversely, James Mulay (Director) was CGON's largest open-market seller in the past 12 months, with $3.78 million of sales (54.84K shares); the latest was on July 10, 2026.
The newest open-market trade among CG Oncology insiders came on September 15, 2026, when Leonard E. Post (Director) made a sale of 1K shares for $72,980.
Away from the open market, CGON insiders acquired 238.32K shares through option exercises and conversions and gave up 4.72K shares to cover taxes or exercise prices over the last 12 months.
Business Quant data puts insider holdings in CGON at 9.13Mn shares across insiders' latest Form 4 filings, or 10.34% of the 88.31Mn shares outstanding; that total is unchanged from 9.13Mn shares at the end of Q2 2026.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 91.06% (8.31Mn shares) of CG Oncology's insider total, with the other 8.94% (816.16K shares) held directly.
CGON's insider total is spread across 5 insiders who have filed a Form 4 in the past two years.
CG Oncology's three biggest insider holders are Hong Fang Song (Director, 7.04Mn shares), Brian Guan-Chyun Liu (Director, 1.89Mn shares) and Arthur Kuan (Chief Executive Officer, 198.92K shares), based on their latest Form 4 filings.
The largest insider, Hong Fang Song, holds 77.12% of CGON's insider total.
A total of 27 Form 4 filings with transactions in CG Oncology stock were made over the past 12 months, by 11 insiders.
This summary of CG Oncology insider activity covers Form 4 filings through September 17, 2026.

Form 4 Holdings

Insiders Holding CGON

Insiders 6

Shares held 12.89Mn

Of outstanding 14.59%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Hong Fang Song	Director	0	5,838,167	5,838,167	45.3%	04 Sep, 2025
2	Capital Global Life Sciences Fund Iv, L.P. Decheng	TenPercentOwner	4,958,810	0	4,958,810	38.5%	09 Apr, 2024
3	Brian Guan-Chyun Liu	Director	0	1,886,236	1,886,236	14.6%	29 Jun, 2026
4	Arthur Kuan	Chief Executive Officer	198,916	0	198,916	1.5%	13 Mar, 2026
5	Corleen M. Roche	Cfo Secretary	2,000	0	2,000	0.0%	31 Jan, 2024
6	Vijay Kasturi	Chief Medical Officer	1,315	0	1,315	0.0%	31 Jan, 2024

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

167 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
15 Sep, 2026	Leonard E Post	Director	Acquired M	1,000	$0.60	$600	1,000	Direct
15 Sep, 2026	Leonard E Post	Director	Disposed S	1,000	$72.98	$72.98K	0	Direct
15 Sep, 2026	Leonard E Post	Director	Disposed M	1,000	$0.00	$0	103,077	Direct
14 Aug, 2026	Leonard E Post	Director	Acquired M	1,000	$0.60	$600	1,000	Direct
14 Aug, 2026	Leonard E Post	Director	Disposed S	1,000	$74.54	$74.54K	0	Direct
14 Aug, 2026	Leonard E Post	Director	Disposed M	1,000	$0.00	$0	104,077	Direct
15 Jul, 2026	Leonard E Post	Director	Acquired M	1,000	$0.60	$600	1,000	Direct
15 Jul, 2026	Leonard E Post	Director	Disposed S	1,000	$71.17	$71.17K	0	Direct
15 Jul, 2026	Leonard E Post	Director	Disposed M	1,000	$0.00	$0	105,077	Direct
10 Jul, 2026	James Mulay	Director	Acquired M	24,165	$26.63	$643.51K	24,165	Direct
10 Jul, 2026	James Mulay	Director	Disposed S	24,165	$75.16	$1.82Mn	0	Direct
10 Jul, 2026	James Mulay	Director	Disposed M	24,165	$0.00	$0	0	Direct
25 Jun, 2026	Brian Guan-Chyun Liu	Director	Acquired P	371,085	$66.87	$24.81Mn	1,886,236	Indirect
24 Jun, 2026	Leonard E Post	Director	Acquired M	5,000	$0.60	$3.00K	5,000	Direct
24 Jun, 2026	Leonard E Post	Director	Disposed S	5,000	$70.00	$350.00K	0	Direct
24 Jun, 2026	Leonard E Post	Director	Disposed M	5,000	$0.00	$0	106,077	Direct
22 Jun, 2026	Leonard E Post	Director	Acquired M	5,000	$0.60	$3.00K	5,000	Direct
22 Jun, 2026	Leonard E Post	Director	Disposed S	5,000	$65.00	$325.00K	0	Direct
22 Jun, 2026	Leonard E Post	Director	Disposed M	5,000	$0.00	$0	111,077	Direct
15 Jun, 2026	James Mulay	Director	Acquired M	654	$3.72	$2.43K	654	Direct

Showing 1 to 20 of 167 transactions