Intchains Group (ICG) investor discloses 6.5% Class A share stake

Rhea-AI Filing Summary

Intchains Group Limited received an updated large-shareholder disclosure on a Schedule 13G/A. Intchains Holding Limited, a British Virgin Islands company 100% owned by Weimin Zhou, reports beneficial ownership of 3,645,950 Class A ordinary shares.

This position represents 6.5% of the Class A ordinary shares, calculated using 56,028,722 Class A shares outstanding as of December 31, 2024, as reported in the company’s Form 20-F. Both Intchains Holding Limited and Weimin Zhou are listed as having sole voting and dispositive power over these shares, indicating significant but non-controlling ownership in the company.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Intchains Group Limited

(Name of Issuer)

Class A ordinary shares, par value US$0.000001 per share

(Title of Class of Securities)

45828E104

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 45828E104

1

Names of Reporting Persons

Intchains ZWM Holding Limited

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

VIRGIN ISLANDS, BRITISH

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,645,950.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,645,950.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,645,950.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.5 %

12

Type of Reporting Person (See Instructions)

CO

Comment for Type of Reporting Person: (1) The value in rows 5 and 7 represents 3,645,950 Class A ordinary shares held of record by Intchains ZWM Holding Limited as of December 31, 2025. (2) Percent of class represented by amount in row (9) is calculated based on an aggregate of 56,028,722 Class A ordinary shares issued and outstanding as of December 31, 2024, as reported in the Issuer's Form 20-F filed with the U.S. Securities and Exchange Commission on April 30, 2025.

SCHEDULE 13G

CUSIP No. 45828E104

1

Names of Reporting Persons

Weimin Zhou

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CHINA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,645,950.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,645,950.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,645,950.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.5 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: (1) The value in rows 5 and 7 represents 3,645,950 Class A ordinary shares held of record by Intchains ZWM Holding Limited, a British Virgin Islands company 100% owned by Weimin Zhou as of December 31, 2025. (2) Percent of class represented by amount in row (9) is calculated based on an aggregate of 56,028,722 Class A ordinary shares issued and outstanding as of December 31, 2024, as reported in the Issuer's Form 20-F filed with the U.S. Securities and Exchange Commission on April 30, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Intchains Group Limited
(b)	Address of issuer's principal executive offices: Building 16, Lane 999, Xinyuan South Road, Lin-gang Special Area, Pudong, Shanghai, People's Republic of China
Item 2.
(a)	Name of person filing: Intchains ZWM Holding Limited, a British Virgin Islands company 100% owned by Weimin Zhou. Weimin Zhou, a citizen of the People's Republic of China.
(b)	Address or principal business office or, if none, residence: The address of each of Intchains ZWM Holding Limited and Weimin Zhou is as follows: c/o Start Chambers, Wickham's Cay II, P. O. Box 2221, Road Town, Tortola, British Virgin Islands. British Virgin Islands
(c)	Citizenship: Intchains ZWM Holding Limited, a British Virgin Islands company Weimin Zhou, a citizen of the People's Republic of China
(d)	Title of class of securities: Class A ordinary shares, par value US$0.000001 per share
(e)	CUSIP No.: 45828E104
Item 4.	Ownership
(a)	Amount beneficially owned: The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
(b)	Percent of class: The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Intchains ZWM Holding Limited

Signature:	/s/ Weimin Zhou
Name/Title:	Weimin Zhou / Director
Date:	01/27/2026

Weimin Zhou

Signature:	/s/ Weimin Zhou
Name/Title:	Weimin Zhou
Date:	01/27/2026

FAQ

What stake in ICG does Intchains Holding Limited report on this Schedule 13G/A?

Intchains Holding Limited reports beneficial ownership of 3,645,950 Class A ordinary shares of Intchains Group Limited, representing 6.5% of the Class A share class.

Who ultimately controls the reported ICG shares on this Schedule 13G/A?

The 3,645,950 Class A ordinary shares are held of record by Intchains Holding Limited, which is 100% owned by Weimin Zhou, making Zhou the ultimate beneficial owner.

How was the 6.5% ownership in ICG calculated in this filing?

The 6.5% figure is based on 56,028,722 Class A ordinary shares issued and outstanding as of December 31, 2024, as reported in Intchains Group Limited’s Form 20-F.

Does the reporting person have sole or shared voting power over the ICG shares?

Both Intchains Holding Limited and Weimin Zhou report sole voting power and sole dispositive power over the 3,645,950 Class A ordinary shares, with no shared power indicated.

What type of securities are covered by this Intchains Group (ICG) Schedule 13G/A?

The filing covers Class A ordinary shares of Intchains Group Limited with a par value of US$0.000001 per share, identified by CUSIP 45828E104.

When is the ownership information in this ICG Schedule 13G/A stated to be effective?

The Schedule 13G/A states that the reported ownership information relates to the date of event of December 31, 2025.