If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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SCHEDULE 13D




Comment for Type of Reporting Person:
Tang Capital Management, LLC ("TCM") beneficially owns 14,292,813 of the Issuer's American Depository Shares ("ADSs") which each represent one Ordinary Share of the Issuer. TCM shares voting and dispositive power over such shares with Tang Capital Partners, LP ("TCP"), Tang Capital Partners International, LP ("TCPI"), Tang Capital Partners III, Inc. ("TCP III"), Tang Capital Partners IV, Inc. ("TCP IV") and Kevin Tang. The percentages used herein are based on 210,506,899 Ordinary Shares outstanding as of June 23, 2026, as set forth in the Issuer's Schedule 14A filed on Form DEFC14A with the Securities and Exchange Commission on June 25, 2026.


SCHEDULE 13D




Comment for Type of Reporting Person:
Kevin Tang beneficially owns 14,292,813 of the Issuer's ADSs which each represent one Ordinary Share of the Issuer. Kevin Tang shares voting and dispositive power over such shares with TCP, TCPI, TCP III, TCP IV and TCM.


SCHEDULE 13D




Comment for Type of Reporting Person:
TCP beneficially owns 3,275,445 of the Issuer's ADSs which each represent one Ordinary Share of the Issuer. TCP shares voting and dispositive power over such shares with TCM and Kevin Tang.


SCHEDULE 13D




Comment for Type of Reporting Person:
TCPI beneficially owns 4,466,490 of the Issuer's ADSs which each represent one Ordinary Share of the Issuer. TCPI shares voting and dispositive power over such shares with TCM and Kevin Tang.


SCHEDULE 13D




Comment for Type of Reporting Person:
TCP III beneficially owns 3,275,445 of the Issuer's ADSs which each represent one Ordinary Share of the Issuer. TCP III shares voting and dispositive power over such shares with TCM and Kevin Tang.


SCHEDULE 13D




Comment for Type of Reporting Person:
TCP IV beneficially owns 3,275,433 of the Issuer's ADSs which each represent one Ordinary Share of the Issuer. TCP IV shares voting and dispositive power over such shares with TCM and Kevin Tang.


SCHEDULE 13D






SCHEDULE 13D


 
TANG CAPITAL MANAGEMENT, LLC
 
Signature:/s/ Kevin Tang
Name/Title:Manager
Date:06/30/2026
 
KEVIN TANG
 
Signature:/s/ Kevin Tang
Name/Title:Self
Date:06/30/2026
 
TANG CAPITAL PARTNERS, LP
 
Signature:/s/ Kevin Tang
Name/Title:Manager, Tang Capital Management, LLC, General Partner
Date:06/30/2026
 
TANG CAPITAL PARTNERS INTERNATIONAL, LP
 
Signature:/s/ Kevin Tang
Name/Title:Manager, Tang Capital Management, LLC, General Partner
Date:06/30/2026
 
TANG CAPITAL PARTNERS III, INC
 
Signature:/s/ Kevin Tang
Name/Title:Chief Executive Officer
Date:06/30/2026
 
TANG CAPITAL PARTNERS IV, INC
 
Signature:/s/ Kevin Tang
Name/Title:Chief Executive Officer
Date:06/30/2026
 
CONCENTRA BIOSCIENCES, LLC
 
Signature:/s/ Kevin Tang
Name/Title:Chief Executive Officer
Date:06/30/2026

ATTACHMENTS / EXHIBITS

ATTACHMENTS / EXHIBITS

EXHIBIT 99.1

EXHIBIT 99.2

EXHIBIT 99.3