Cong Claire Xu - 18 Mar 2026 Form 3 Insider Report for NovaBridge Biosciences (NBP)

Signature
/s/ Xi-Yong (Sean) Fu as attorney-in-fact
Issuer symbol
NBP
Transactions as of
18 Mar 2026
Net transactions value
$0
Form type
3
Filing time
18 Mar 2026, 21:35:22 UTC

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Xu Cong Claire Senior Vice President, Clinical Development Exhibit List: Ex. 24.1 - Power of Attorney C/O NOVABRIDGE BIOSCIENCES,, 2440 RESEARCH BOULEVARD, SUITE 400, ROCKVILLE /s/ Xi-Yong (Sean) Fu as attorney-in-fact 18 Mar 2026 0002114309

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding NBP Ordinary Shares 288,266 18 Mar 2026 Direct F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding NBP 2021 Employee Share Option (right to buy) 18 Mar 2026 Ordinary Shares 22,900 $60.70 Direct F1, F3, F4
holding NBP 2022 Employee Share Option (right to buy) 18 Mar 2026 Ordinary Shares 43,690 $21.15 Direct F1, F3, F5
holding NBP 2023 Employee Share Option (right to buy) 18 Mar 2026 Ordinary Shares 57,660 $5.55 Direct F1, F3, F6
holding NBP 2024 Employee Share Option (right to buy) 18 Mar 2026 Ordinary Shares 146,865 $1.74 Direct F1, F3, F7
holding NBP 2024 Employee Share Option (right to buy) 18 Mar 2026 Ordinary Shares 52,165 $1.05 Direct F1, F3, F8
holding NBP Restricted Share Units 18 Mar 2026 Ordinary Shares 36,716 Direct F1, F3, F9
holding NBP Restricted Share Units 18 Mar 2026 Ordinary Shares 5,405 Direct F1, F3, F10
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer.
F2 Reported securities are represented by 123,594 ADSs.
F3 Number of underlying securities and exercise price expressed in terms of ADSs.
F4 The option was granted on July 21, 2021 and is fully vested and exercisable.
F5 The option was granted on March 4, 2022 and is fully vested and exercisable.
F6 The option was granted on January 4, 2023. The option vests and becomes exercisable in four equal annual installments beginning on the first anniversary of the grant date.
F7 The option to purchase 195,820 ADSs was granted on May 30, 2024. The option vested or shall vest and become exercisable 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. Amount of underlying securities excludes a portion of the option that has vested and been exercised.
F8 The option was granted on September 3, 2024 and is fully vested and exercisable. Amount of underlying securities excludes a portion of the option that has vested and been exercised.
F9 On May 30, 2024, the Reporting Person was granted 65,270 restricted share units ("RSUs"). Each RSU represents a contingent right to receive one ADS. 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.
F10 On January 4, 2023, the Reporting Person was granted 21,620 RSUs. The RSUs vested or shall vest in four equal annual installments beginning on the first anniversary of the grant date.

Remarks:

Senior Vice President, Clinical Development Exhibit List: Ex. 24.1 - Power of Attorney