Wei-Wu He - 23 Mar 2026 SCHEDULE 13D/A Report for CASI Pharmaceuticals, Inc. Ordinary Shares (CASIF)

Filing manager: Wei-Wu He
Reporting owner: WEI-WU HE, Ph.D.
Security: CASI Pharmaceuticals, Inc. Ordinary Shares
Beneficially owned shares: 18,985,535 shares
Large-stake signal: Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Ownership
53%
Beneficial ownership of this reported class.
Shares
18,985,535 shares
Shares beneficially owned as disclosed.
Event date
23 Mar 2026
Date tied to the ownership event or amendment.
Accepted by SEC
23 Mar 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: 53%
Symbol: CASIF
Shares outstanding: 35,821,764 shares
SEC form: SCHEDULE 13D/A
Accepted by SEC: 23 Mar 2026, 06:40:36 UTC
Event date: 23 Mar 2026
Prior SEC filing: 10 Feb 2026
Next SEC filing: 18 May 2026
Source filing: View source filing

Key filing fact

Wei-Wu He disclosed 53% ownership in CASI Pharmaceuticals, Inc. Ordinary Shares (CASIF) on 23 Mar 2026.

Key facts

Wei-Wu He filed SCHEDULE 13D/A for CASI Pharmaceuticals, Inc. Ordinary Shares (CASIF).
Disclosed ownership: 53%.
Date of event: 23 Mar 2026.

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.

Backed by Schedule 13D/13G

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

Reporting persons

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
WEI-WU HE, Ph.D.	53%	18,985,535	2,150,550	16,834,985	/s/ Wei-Wu He, Ph.D.	Wei-Wu He, Ph.D.	0001542073
HUIYING MEMORIAL FOUNDATION	3.1%	637,644	0	637,644	/s/ Wei-Wu He, Ph.D.	Wei-Wu He, Ph.D./President
EMERGING TECHNOLOGY PARTNERS, LLC	45%	16,097,341	0	16,097,341	/s/ Wei-Wu He, Ph.D.	Wei-Wu He, Ph.D./ Managing Member
ETP Global Fund L.P.	3.7%	753,234	0	753,234	EMERGING TECHNOLOGY PARTNERS, LLC	General Partner
ETP BIOHEALTH III FUND, L.P.	1.5%	300,000	0	300,000	EMERGING TECHNOLOGY PARTNERS, LLC	General Partner
HE Family GRAT	0.5%	100,000	0	100,000	/s/ Wei-Wu He, Ph.D.	Wei-Wu He, Ph.D./Trustee
ETP Global III Fund L.P.	42%	15,000,000	0	15,000,000	EMERGING TECHNOLOGY PARTNERS, LLC	General Partner

CIK / CUSIP context first

Broader feeds