Insider · CIK 0002114309
Cong Claire Xu
Files at NBP (NovaBridge Biosciences). First filing Sep 1, 2026, latest Sep 1, 2026.
Cong Claire Xu files SEC Form 4 as officer at NBP (NovaBridge Biosciences). Since Sep 1, 2026, Cong Claire Xu has reported 0 open-market buys worth $0 and 1 open-market sell worth $2,593, the latest filed on Sep 1, 2026.
A track record needs three past buys with six months of prices behind them; Cong Claire Xu has 0, so none is measured yet.
The newest scored trade: sold $2,593 of NBP on Aug 31, 2026, filed Sep 1, 2026, scored 8 (weak). In the last 12 months: 0 buys worth $0 and 1 sell worth $2,593.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
NBP: NovaBridge Biosciences
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 8Weak | NovaBridge Biosciences | $2,593 3,282 shares | -1% | - |
Transactions
Every row this insider has filed, 3 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 30, 2026 | NBP NovaBridge Biosciences | MOption exercise Ordinary Shares | +9,382 | - | - | 307,483 | 42 d ago |
| Aug 31, 2026 | NBP NovaBridge Biosciences | SOpen-market sale Ordinary Shares | -3,282 | $0.79 | $2,593 | 304,201 | 42 d ago |
| Aug 30, 2026 | NBP NovaBridge Biosciences | MOption exercise Restricted Share Unitsderivative | -4,079 | $0.00 | $0 | 28,558 | 42 d ago |
Questions about Cong Claire Xu
Answered from the filings on this page, as of the latest one.
Is Cong Claire Xu buying or selling?
In the last 12 months Cong Claire Xu reported 0 open-market buys worth $0 and 1 open-market sell worth $2,593 on SEC Form 4; the latest was sold $2,593 of NBP on Aug 31, 2026. Grants, option exercises and tax withholding are not counted.
How did Cong Claire Xu's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Cong Claire Xu has 0.
Where does Cong Claire Xu file Form 4?
Cong Claire Xu has filed Form 4 at NBP (NovaBridge Biosciences) as EVP, Clinical Development. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.