Cao Sean Wuxiong 4
4 · NovaBridge Biosciences · Filed May 18, 2026
Research Summary
AI-generated summary of this filing
NovaBridge Biosciences Director Sean Wuxiong Cao Sells Shares
What Happened
Sean Wuxiong Cao, NovaBridge Biosciences' Chief Business Development Officer and a director, disposed of securities on 2026-05-14. The filing reports a sale of ADSs representing approximately 21,399 ordinary shares at $1.99 (price expressed in ADS terms), for a reported total of $42,584. The sale was done solely to satisfy tax withholding obligations arising from a partial vesting of a restricted stock unit (RSU) award.
Key Details
- Transaction date: 2026-05-14; Form 4 filed: 2026-05-18 (period of report 2026-05-14).
- Quantity/price: 9,304 ADSs sold (representing ~21,399 ordinary shares) at $1.99 per ADS; reported proceeds $42,584.
- Transaction codes: S = Sale (disposition); F (tax withholding — sale to cover tax on RSU vesting).
- Reason: Sale executed to satisfy tax withholding for RSU partial vesting on 2026-01-31 (per footnote).
- Holdings after transaction: reported securities are represented by 15,249 ADSs (per filing).
- ADS conversion: 10 ADSs represent 23 ordinary shares (per footnote).
Context
This was a tax-withholding sale tied to RSU vesting, a routine administrative transaction that doesn’t necessarily signal a change in insider sentiment. Retail investors should note the sale’s purpose (tax withholding) and the ADS structure when comparing share counts and dollar amounts.
Insider Transaction Report
- Sale
Ordinary Shares
[F1][F2][F3][F4]2026-05-14$1.99/sh−21,399$42,584→ 35,073 total
Footnotes (4)
- [F1]The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.
- [F2]The reporting person sold 9,304 ADSs representing approximately 21,399 ordinary shares in connection with the partial vesting of a restricted stock unit award on January 31, 2026, solely to satisfy tax withholding obligations incurred in connection with the vesting.
- [F3]Price expressed in terms of ADSs.
- [F4]The reported securities are represented by 15,249 ADSs.