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Phillip Andrew Dennis - OfficerOpen-market sale$6K
Sean Wuxiong Cao - OfficerOpen-market sale$80K
About NovaBridge Biosciences (NBP)
The SEC lists NovaBridge Biosciences under CIK 0001778016, in pharmaceutical preparations. It is grouped with Health Care companies on this site.
NBP Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 3 | 119,469 | $88K |
| Option exercise | 10 | 559,087 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
NBP insider transactions (Form 4)
3315 Form 4 filings on record, the earliest from Apr 28, 2026, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Phillip Andrew Dennis - Officer | Option exercise | Ordinary Shares | 23,695 footnote F2 | - footnote F3 | - | |
| Phillip Andrew Dennis - Officer | Open-market sale | Ordinary Shares | 8,209 footnote F5 | $0.71 footnote F6 | $6K | |
| Phillip Andrew Dennis - Officer | Option exercise | Restricted Share Units | 10,302 footnote F8 | $0.00 | - | |
| ||||||
| Sean Wuxiong Cao - Officer | Open-market sale | Ordinary Shares | 107,978 footnote F3 | $0.74 footnote F4 | $80K | |
| ||||||
| Sean Wuxiong Cao - Officer | Option exercise | Ordinary Shares | 235,136 footnote F2 | - footnote F3 | - | |
| Sean Wuxiong Cao - Officer | Option exercise | Ordinary Shares | 104,236 footnote F4 | - footnote F3 | - | |
| Sean Wuxiong Cao - Officer | Option exercise | Restricted Share Units | 102,233 | $0.00 | - | |
| Sean Wuxiong Cao - Officer | Option exercise | Restricted Share Units | 45,320 | $0.00 | - | |
| ||||||
| Cong Claire Xu - Officer | Option exercise | Ordinary Shares | 9,382 footnote F2 | - footnote F3 | - | |
| Cong Claire Xu - Officer | Open-market sale | Ordinary Shares | 3,282 footnote F5 | $0.79 footnote F6 | $3K | |
| Cong Claire Xu - Officer | Option exercise | Restricted Share Units | 4,079 footnote F8 | $0.00 | - | |
| ||||||
| Robert A. Lenz - Director | Option exercise | Ordinary Shares | 17,218 footnote F2 | - footnote F3 | - | |
| Robert A. Lenz - Director | Option exercise | Restricted Share Units | 7,486 footnote F4 | $0.00 | - | |
| ||||||
 Mark Arnold Hagler - Officer | Grant or award | 2025 Employee Share Option (right to buy) | 949,050 footnote F1 | $0.00 | - | |
| ||||||
 Liwei Lorraine Lin - Officer | Grant or award | 2025 Employee Share Option (right to buy) | 254,780 footnote F1 | $0.00 | - | |
| ||||||
 Srishti Gupta - Officer | Grant or award | 2025 Employee Share Option (right to buy) | 3,000,000 footnote F1 | $0.00 | - | |
| ||||||
| Cong Claire Xu - Officer | Option exercise | Ordinary Shares | 12,432 footnote F2 | - footnote F3 | - | |
| Cong Claire Xu - Officer | Open-market sale | Ordinary Shares | 4,485 footnote F5 | $0.89 footnote F6 | $4K | |
| Cong Claire Xu - Officer | Option exercise | Restricted Share Units | 5,405 footnote F8 | $0.00 | - | |
| ||||||
| Wei Fu | Grant or award | 2025 Employee Share Option (right to buy) | 725,140 footnote F1 | $0.00 | - | |
| Wei Fu | Grant or award | 2025 Employee Share Option (right to buy) | 1,087,720 footnote F1 | $0.00 | - | |
| Wei Fu | Grant or award | 2025 Employee Share Option (right to buy) | 1,087,720 footnote F1 | $0.00 | - | |
| Wei Fu | Grant or award | Restricted Share Units | 1,010,100 footnote F1 | $0.00 | - | |
| ||||||
| Sean Wuxiong Cao - Officer | Grant or award | Restricted Share Units | 181,280 footnote F2 | $0.00 | - | |
| Sean Wuxiong Cao - Officer | Grant or award | 2025 Employee Share Option (right to buy) | 181,290 footnote F2 | $0.00 | - | |
| ||||||
| Phillip Andrew Dennis - Officer | Open-market sale | Ordinary Shares | 8,494 footnote F5 | $0.66 footnote F6 | $6K | |
| Phillip Andrew Dennis - Officer | Option exercise | Restricted Share Units | 10,302 footnote F8 | $0.00 | - | |
| Phillip Andrew Dennis - Officer | Option exercise | Ordinary Shares | 23,695 footnote F2 | - footnote F3 | - | |
| ||||||
| Cong Claire Xu - Officer | Option exercise | Ordinary Shares | 9,382 footnote F2 | - footnote F3 | - | |
| Cong Claire Xu - Officer | Open-market sale | Ordinary Shares | 3,494 footnote F5 | $3.94 footnote F6 | $14K | |
| Cong Claire Xu - Officer | Option exercise | Restricted Share Units | 4,079 footnote F8 | $0.00 | - | |
| ||||||
| Sean Wuxiong Cao - Officer | Open-market sale | Ordinary Shares | 21,399 | $1.99 footnote F3 | $43K | |
| ||||||
| Mark Arnold Hagler - Officer | Open-market purchase | Ordinary Shares | 230,000 footnote F2 | $2.51 footnote F3 | $577K | |
| ||||||
Recent NBP Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Dennis Phillip Andrew | Chief Medical Officer | 3,569 | $6K | View on EDGAR | |
| Cao Sean Wuxiong | Officer, CHIEF BUSINESS DEVELOPMENT OFFICER | 46,947 |
NBP insider trading FAQ
What is the latest insider trade for NBP?
NovaBridge Biosciences (NBP) had 5 insider filings in the last 90 days, with the most recent on 2026-09-21. The full record for NBP runs to 15 Form 4 filings, the earliest from 2026-04-28. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying NBP stock?
No insider purchases of NBP were filed in the last 90 days. 1 purchase is on record for this company.
How many insiders are selling NBP stock?
3 insider sales of NBP were filed in the last 90 days, totaling $88K.
Where can I see NBP SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects NBP Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Phillip Andrew Dennis view on EDGAR
- - Sean Wuxiong Cao view on EDGAR
- - Sean Wuxiong Cao view on EDGAR
- - Cong Claire Xu view on EDGAR
- - Robert A. Lenz view on EDGAR
- - Mark Arnold Hagler view on EDGAR
- - Liwei Lorraine Lin view on EDGAR
- - Srishti Gupta view on EDGAR
- - Cong Claire Xu view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Health Care
- Where NBP's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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