SEC Form 4 · accession 0002109966-26-000006
NovaBridge Biosciences · NBP
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Sean Wuxiong Cao
Officer — Chief Bus. Development Officer
Period of report
Sep 3, 2026
Accepted (ET)
Sep 8, 2026 · 5:51 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001778016
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary SharesF1,F2,F3 | Sep 3, 2026 | M | 235,136 | — | A | 270,209 | D | |
| Ordinary SharesF1,F4,F3 | Sep 3, 2026 | M | 104,236 | — | A | 374,445 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Share UnitsF3,F5,F1 | — | Sep 3, 2026 | M | 102,233 | D | — | — | Ordinary Shares | 102,233 | 306,700 | D |
| Restricted Share UnitsF3,F6,F1 | — | Sep 3, 2026 | M | 45,320 | D | — | — | Ordinary Shares | 45,320 | 135,960 | D |
Explanation of responses
- F1The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.
- F2Reported securities are represented by 102,233 ADSs
- F3Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.
- F4Reported securities are represented by 45,320 ADSs.
- F5On September 3, 2025, the Reporting Person was granted 408,933 RSUs. The RSUs vested or shall vest over four years, with one-fourth vesting on the first anniversary of the grant date and the balance vesting ratably over the subsequent 12 quarters on the third day of each third month.
- F6On June 22, 2026, the Reporting Person was granted 181,280 RSUs. The RSUs vested or shall vest over four years, with one-fourth vesting on September 3, 2026 and the balance vesting ratably over the subsequent 12 quarters on the third day of each third month.