CBC Investment I-Mab Ltd - 29 Jan 2026 SCHEDULE 13D/A Report for NovaBridge Biosciences Ordinary Shares, par value $0.0001 per share (Including Ordinary Shares Underlying American Depository Shares) (NBP)

Filing manager
CBC Investment I-Mab Ltd
Reporting owner
Wei Fu
Security
NovaBridge Biosciences Ordinary Shares, par value $0.0001 per share (Including Ordinary Shares Underlying American Depository Shares)
Beneficially owned shares
30,499,709 shares
Ownership signal CIK-linked ownership evidence from parsed SEC filings. 2 signals
Large-stake signal

Form

SCHEDULE 13D/A

Active or control-oriented beneficial ownership filing.

Ownership

12%

Beneficial ownership of this reported class.

Shares

30,499,709 shares

Shares beneficially owned as disclosed.

Event date

29 Jan 2026

Date tied to the ownership event or amendment.

Accepted by SEC

03 Feb 2026

EDGAR acceptance date.

How to read this large-stake filing
  • Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
  • Compare this filing with the holder history and issuer page before treating the percentage as a current position.
  • Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership
12%
Subject security Names, identifiers, and filing context for this profile. 2 source fields
Symbol
NBP
Shares outstanding
265,214,861 shares
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
SCHEDULE 13D/A
Accepted by SEC
03 Feb 2026, 16:13:11 UTC
Event date
29 Jan 2026
Prior SEC filing
07 Aug 2025
Source filing
View source filing

Key filing fact

CBC Investment I-Mab Ltd disclosed 12% ownership in NovaBridge Biosciences Ordinary Shares, par value $0.0001 per share (Including Ordinary Shares Underlying American Depository Shares) (NBP) on 29 Jan 2026.

Key facts

  • CBC Investment I-Mab Ltd filed SCHEDULE 13D/A for NovaBridge Biosciences Ordinary Shares, par value $0.0001 per share (Including Ordinary Shares Underlying American Depository Shares) (NBP).
  • Disclosed ownership: 12%.
  • Date of event: 29 Jan 2026.

Change

  • Previous schedule filing date: 07 Aug 2025.
  • Current filing was accepted on 03 Feb 2026, 16:13.

Research use

  • This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
  • Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

View source filing

Reporting persons

Disclosed reporting parties (12)

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name Ownership Shares owned Sole voting power Shared voting power Signature Title CIK
CBC Investment I-Mab Limited 4.4% 11,784,164 0 11,784,164 /s/ Wei Fu Wei Fu - Director 0001845246
IBC Investment Seven Limited 1.4% 3,641,554 0 3,641,554 /s/ Wei Fu Wei Fu - Director
CBC SPVII LIMITED 2.1% 5,574,560 0 5,574,560 /s/ Wei Fu Wei Fu - Director
C-Bridge II Investment Ten Limited 0.9% 2,369,546 0 2,369,546 /s/ Wei Fu Wei Fu - Director
Nova Aqua Limited 2.7% 7,129,885 0 7,129,885 /s/ Wei Fu Wei Fu - Authorized Signatory
C-Bridge Healthcare Fund II, L.P. 5.3% 14,153,710 0 14,153,710 /s/ Wei Fu Wei Fu - Authorized Representative
C-Bridge Healthcare Fund GP II, L.P. 5.3% 14,153,710 0 14,153,710 /s/ Wei Fu Wei Fu - Authorized Representative
C-Bridge Capital GP, Ltd. 8.8% 23,369,824 0 23,369,824 /s/ Wei Fu Wei Fu - Director
I-Bridge Healthcare Fund, L.P. 3.5% 9,216,114 0 9,216,114 /s/ Wei fu Wei Fu - Authorized Representative
I-Bridge Healthcare GP, L.P. 3.5% 9,216,114 0 9,216,114 /s/ Wei Fu Wei Fu - Authorized Representative
I-Bridge Capital GP, Ltd. 3.5% 9,216,114 0 9,216,114 /s/ Wei Fu Wei Fu - Director
Wei Fu 12% 30,499,709 0 30,499,709 /s/ Wei Fu Wei Fu
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