CG Oncology, Inc. (CGON) Insider Transactions
CGON Insider Buying & Selling Activity
Between Sep 3, 2025 and Aug 14, 2026, 4 insiders at CG Oncology, Inc. (CGON) reported 23 transactions on record: 2 purchases and 21 sales. In total, insiders bought $74.81M and sold $10.28M, a net buying position of $64.53M. 2 insiders also sold within a 30-day window around Jul 15, 2026.
Multiple insiders trading the same direction in a short window is generally read as a stronger signal than any single trade alone.
| Date | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| Sep 11, 2025 | Liu Brian Guan-Chyun | Director | Purchase | 1.52M | $50.00M |
| Jun 25, 2026 | Liu Brian Guan-Chyun | Director | Purchase | 371.1K | $24.81M |
| Sep 3, 2025 | Song Hong Fang | Director | Sale | 100.0K | $2.78M |
| Jul 10, 2026 | Mulay James | Director | Sale | 24.2K | $1.82M |
| Apr 17, 2026 | Mulay James | Director | Sale | 15.6K | $1.14M |
Every insider with activity on record, most recently active first.
| Insider | Role | Last Activity | Date | Latest Known Holding |
|---|---|---|---|---|
| POST LEONARD E | Director | Sale | Aug 14, 2026 | 0 |
| Mulay James | Director | Sale | Jul 10, 2026 | 0 |
| Liu Brian Guan-Chyun | Director | Purchase | Jun 25, 2026 | 1.89M |
| Song Hong Fang | Director | Sale | Sep 3, 2025 | 2.90M |
Every purchase and sale on record, deduplicated. "52w range" shows where that price sat in the trailing year at the time, and "Since" shows the paper return from that price to today.
| Date | Insider | Role | Type | Shares | Price | Value | 52w Range | Since |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | POST LEONARD E | Director | Sale | 1.0K | $74.54 | $74.5K | 96% | -0.3% |
| Jul 15, 2026 | POST LEONARD E | Director | Sale | 1.0K | $71.17 | $71.2K | 96% | +4.5% |
| Jul 10, 2026 | Mulay James | Director | Sale | 24.2K | $75.16 | $1.82M | 100% | -1.1% |
| Jun 25, 2026 | Liu Brian Guan-Chyun | Director | Purchase | 371.1K | $66.87 | $24.81M | 98% | +11.2% |
| Jun 24, 2026 | POST LEONARD E | Director | Sale | 5.0K | $70.00 | $350.0K | 89% | +6.2% |
| Jun 22, 2026 | POST LEONARD E | Director | Sale | 5.0K | $65.00 | $325.0K | 85% | +14.4% |
| Jun 15, 2026 | Mulay James | Director | Sale | 2.0K | $60.12 | $118.1K | 71% | +23.7% |
| Jun 4, 2026 | POST LEONARD E | Director | Sale | 1.0K | $54.50 | $54.5K | 64% | +36.4% |
| Apr 17, 2026 | Mulay James | Director | Sale | 15.6K | $73.01 | $1.14M | 100% | +1.8% |
| Mar 16, 2026 | Mulay James | Director | Sale | 2.0K | $63.50 | $124.7K | 100% | +17.1% |
| Jan 9, 2026 | Mulay James | Director | Sale | 11.1K | $52.47 | $584.8K | 100% | +41.7% |
| Nov 17, 2025 | POST LEONARD E | Director | Sale | 1.0K | $41.43 | $41.4K | 89% | +79.4% |
| Oct 13, 2025 | POST LEONARD E | Director | Sale | 1.0K | $43.25 | $43.3K | 95% | +71.9% |
| Oct 9, 2025 | Mulay James | Director | Sale | 5.9K | $43.99 | $259.7K | 100% | +69.0% |
| Sep 30, 2025 | POST LEONARD E | Director | Sale | 5.0K | $40.09 | $200.4K | 100% | +85.4% |
| Sep 29, 2025 | Mulay James | Director | Sale | 12.8K | $39.19 | $499.9K | 96% | +89.7% |
| Sep 19, 2025 | Mulay James | Director | Sale | 3.6K | $38.99 | $139.3K | 88% | +90.7% |
| Sep 18, 2025 | Mulay James | Director | Sale | 19.1K | $39.01 | $745.6K | 95% | +90.6% |
| Sep 15, 2025 | POST LEONARD E | Director | Sale | 1.0K | $35.10 | $35.1K | 78% | +111.8% |
| Sep 11, 2025 | Liu Brian Guan-Chyun | Director | Purchase | 1.52M | $33.00 | $50.00M | 72% | +125.3% |
| Sep 5, 2025 | Mulay James | Director | Sale | 27.0K | $31.53 | $851.8K | 72% | +135.8% |
| Sep 3, 2025 | POST LEONARD E | Director | Sale | 1.0K | $28.00 | $28.0K | 54% | +165.5% |
| Sep 3, 2025 | Song Hong Fang | Director | Sale | 100.0K | $27.80 | $2.78M | 54% | +167.4% |
52w range and paper return are only computed for transactions with a date that lines up with price history on record.
Are insiders buying or selling CGON stock?
On record between Sep 3, 2025 and Aug 14, 2026, CG Oncology, Inc. insiders made 2 purchases ($74.81M) and 21 sales ($10.28M), a net buying position of $64.53M.
Has there been cluster buying or selling at CGON?
No buying clusters (2+ insiders within 30 days) on record. 3 insiders sold within 30 days around Sep 30, 2025; 2 insiders sold within 30 days around Oct 13, 2025; 2 insiders sold within 30 days around Jun 24, 2026; 2 insiders sold within 30 days around Jul 15, 2026.
What is the largest recent insider transaction at CGON?
The largest transaction on record is Liu Brian Guan-Chyun (Director), a purchase of $50.00M on Sep 11, 2025.
Does a 10b5-1 automatic trading plan explain CGON's insider sales?
This data does not indicate whether a given sale was part of a pre-scheduled Rule 10b5-1 plan, that detail is not captured in the transaction data available here.