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NovaBridge Biosciences (NASDAQ:NBP)
US · Delayed Price · Currency is USD
Also listed: IMABHealthcare · Biotechnology
1.22-0.15 (-11.31%)
Insider Score
––Not scored
NBP Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
NBP Stock Insider Trading Activity
NBP stock’s insider trading shows 7 sales on the open market for an estimated $154.27K by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Woo Ian Ying Director | Option exercise | 13,271 | — | — | New | 13,271 | Oct 15, 2026 | — | Form 4 |
| Dennis Phillip Andrew Other | Sell | 8,209 | $0.71 | $5.83K | 4.5% | 173,427 | Sep 18, 2026 | — | Form 4 |
| Dennis Phillip Andrew Other | Option exercise | 23,695 | — | — | 15.0% | 181,636 | Sep 17, 2026 | — | Form 4 |
| Cao Sean Wuxiong Other | Sell | 107,978 | $0.74 | $79.90K | 28.8% | 266,467 | Sep 9, 2026 | — | Form 4 |
| Cao Sean Wuxiong Other | Option exercise | 104,236 | — | — | 38.6% | 374,445 | Sep 3, 2026 | — | Form 4 |
| Cao Sean Wuxiong Other | Option exercise | 235,136 | — | — | 670% | 270,209 | Sep 3, 2026 | — | Form 4 |
| Xu Cong Claire Other | Sell | 3,282 | $0.79 | $2.59K | 1.1% | 304,201 | Aug 31, 2026 | — | Form 4 |
| Xu Cong Claire Other | Option exercise | 9,382 | — | — | 3.1% | 307,483 | Aug 30, 2026 | — | Form 4 |
| Lenz Robert A. Director | Option exercise | 17,218 | — | — | New | 17,218 | Aug 22, 2026 | — | Form 4 |
| Xu Cong Claire Other | Sell | 4,485 | $0.89 | $3.99K | 1.5% | 298,101 | Jul 6, 2026 | — | Form 4 |
| Xu Cong Claire Other | Option exercise | 12,432 | — | — | 4.3% | 302,586 | Jul 4, 2026 | — | Form 4 |
| Dennis Phillip Andrew Other | Sell | 8,494 | $0.66 | $5.61K | 5.1% | 157,941 | Jun 18, 2026 | — | Form 4 |
| Dennis Phillip Andrew Other | Option exercise | 23,695 | — | — | 16.6% | 166,435 | Jun 17, 2026 | — | Form 4 |
| Xu Cong Claire Other | Sell | 3,494 | $3.94 | $13.77K | 1.2% | 290,154 | Jun 1, 2026 | — | Form 4 |
| Xu Cong Claire Other | Option exercise | 9,382 | — | — | 3.3% | 293,648 | May 30, 2026 | — | Form 4 |
| Cao Sean Wuxiong Director | Sell | 21,399 | $1.99 | $42.58K | 37.9% | 35,073 | May 14, 2026 | — | Form 4 |
| Hagler Mark Arnold Other | Buy | 230,000 | $2.51 | $577.30K | New | 230,000 | Apr 24, 2026 | AFirst BuyDilution | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Sell (S) — Open-market or private sale
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.