| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director | COO, CFO
3 companies
Winston Kung is Director at CRBP, with reported holdings spanning 3 companies. Winston Kung's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $271K at current prices.
Our model assigns Winston Kung a strong insider score of 72/100, based on 5 past trades. Over a 12-month horizon, all 4 of those trades were profitable, with an average 12-month return of +54.9%.
Winston Kung's largest disclosed position is in JANX as Director, worth about $209K.
Winston Kung has 23 Form 4 filings on record from December 2020 to June 2026, across 4 companies: Director at Janux Therapeutics (JANX), 2022–2026; Director at Corbus Pharmaceuticals (CRBP), 2024–2026; Chief Financial Officer at ArriVent BioPharma (AVBP), 2025–2026, and 1 more.
The 34 reported transactions were 14 option or other derivative awards, 7 option exercises, 6 stock awards and 5 open-market sales, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 5 sales worth about $624K.
The largest open-market sale was 4,500 shares of PMVP at an average $33.82 on August 3, 2021, about $152K. Twelve months later PMVP was down 56%.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 10, 2026 | CRBP Corbus Pharmaceuticals Holdings, Inc. | Director | Sell10b5-1 | 2,026 | $7.91 | $16,033.16 | -14.3% | +37.6% | - | |
| Aug 3, 2021 | PMVP Pmv Pharmaceuticals, Inc. | COO, CFO | Sale+OE | 4,500 | $33.82 | $152,177.85 | -73.8% | -28.2% | -56.1% | |
| Jul 8, 2021 | PMVP Pmv Pharmaceuticals, Inc. | COO, CFO | Sale+OE | 4,500 | $33.75 | $151,875.00 | -73.8% | -11.1% | -50.0% | |
| Jun 4, 2021 | PMVP Pmv Pharmaceuticals, Inc. | COO, CFO | Sale+OE | 4,500 | $33.75 | $151,875.00 | -73.8% | -12.2% | -58.5% | |
| May 3, 2021 | PMVP Pmv Pharmaceuticals, Inc. | COO, CFO | Sale+OE | 4,500 | $33.75 | $151,875.00 | -73.8% | +1.5% | -55.1% |