NBP · NovaBridge Biosciences

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The option vests and becomes exercisable in four equal annual installments beginning on the first anniversary of April 17, 2026.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The option vests and becomes exercisable over five years, with 40% vesting on the second anniversary of February 1, 2026 and the balance vesting in three equal annual installments thereafter.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The option vests and becomes exercisable in four equal annual installments beginning on the first anniversary of July 1, 2026.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Reported securities are represented by 1,950 ADSs.

Reported sales price represents the converted sales price of the ADSs of $2.04.

Reported securities are represented by 129,609 ADSs.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Reported securities are represented by 5,405 ADSs.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Reported securities are represented by 131,559 ADSs.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Reported securities represent ADSs.

Fully vested.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The RSUs vest over two years in equal annual installments on June 29, 2027 and June 29, 2028.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The option vests, if at all, in eight equal quarterly installments following the date on which the 30-trading-day weighted average price of the Issuer's ADS (based on trading days only) is at or above US$12.00.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The option vests, if at all, in eight equal quarterly installments following the date on which the 30-trading-day weighted average price of the Issuer's ADS (based on trading days only) is at or above US$16.00.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Number of underlying securities and exercise price expressed in terms of American Depositary Shares ("ADS").

The option vests, if at all, in eight equal quarterly installments following the date on which the 30-trading-day weighted average price of the Issuer's ADS (based on trading days only) is at or above US$8.00.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Number of underlying securities and exercise price expressed in terms of ADSs.

The option vests, if at all, in eight equal quarterly installments following the date on which the 30-trading-day weighted average price of the Issuer's ADS (based on trading days only) is at or above US$8.00.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Each restricted stock unit ("RSU") represents a contingent right to receive one American Depositary Shares ("ADS").

Number of underlying securities and exercise price expressed in terms of ADSs.

The RSUs 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.

The Ordinary Shares may be represented by ADSs. Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Reported securities are represented by 3,693 ADSs.

Reported sales price represents the converted sales price of the ADSs of $1.51.

Reported securities are represented by 68,670 ADSs.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Reported securities represent ADSs.

On June 17, 2024, the Reporting Person was granted 164,840 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 17th day of each third month.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Reported securities are represented by 10,302 ADSs.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Reported securities are represented by 72,363 ADSs.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Reported securities are represented by 1,519 ADSs.

Reported sales price represents the converted sales price of the ADSs of $1.71.

Reported securities are represented by 126,154 ADSs.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Reported securities represent ADSs.

On May 30, 2024, the Reporting Person was granted 65,270 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 30th day of each third month.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

Reported securities are represented by 4,079 ADSs.

Each restricted stock unit ("RSU") represents a contingent right to receive one ADS.

Reported securities are represented by 127,673 ADSs.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

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.

Price expressed in terms of ADSs.

The reported securities are represented by 15,249 ADSs.

The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.

The reported securities are represented by 100,000 ADSs.

The price reported in Column 4 is a weighted average price. These ADSs were purchased in multiple transactions at prices ranging from $2.44 to $2.54, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.