Tencent Holdings (HQ) reports 11.1% stake in Horizon Quantum via THL A12

Rhea-AI Filing Summary

Tencent Holdings Limited, through its wholly owned subsidiary THL A12 Limited, reports beneficial ownership of 3,800,438 Class A Ordinary Shares of Horizon Quantum Holdings Ltd. This represents 11.1% of the Class A shares, giving Tencent and THL A12 sole voting and sole dispositive power over these shares.

The ownership percentage is based on 34,227,495 Class A Ordinary Shares outstanding as of June 30, 2026, as referenced from Horizon Quantum’s interim financial statements. Both reporting persons are organized offshore (Cayman Islands for Tencent and British Virgin Islands for THL A12), and this filing is identified as Amendment No. 1 to a Schedule 13G.

Key Figures

Beneficially owned shares: 3,800,438 Class A Ordinary Shares Ownership percentage: 11.1% Shares outstanding: 34,227,495 Class A Ordinary Shares +2 more

5 metrics

Beneficially owned shares 3,800,438 Class A Ordinary Shares Shares beneficially owned by THL A12 Limited, attributed to Tencent Holdings Limited

Ownership percentage 11.1% Percent of Horizon Quantum Class A shares beneficially owned by the reporting persons

Shares outstanding 34,227,495 Class A Ordinary Shares Aggregate Class A shares outstanding as of June 30, 2026

CUSIP Y4000A102 Identifier for Horizon Quantum Holdings Ltd. Class A Ordinary Shares

Amendment number Amendment No. 1 Indicates this is an amended Schedule 13G filing

Key Terms

beneficially owns, beneficial ownership, sole voting power, sole dispositive power, +1 more

5 terms

beneficially owns financial

"THL A12 Limited beneficially owns 3,800,438 Class A Ordinary Shares."

Beneficially owns means a person or entity enjoys the economic benefits and control of a security even if the legal title or registration is held in another name. Think of it like having the keys and profits from a car that is registered to a friend: you use it, benefit from it, and make decisions about it even though the official paperwork lists someone else. For investors, this matters because it reveals who truly controls shares, affects voting power, potential conflicts of interest, and regulatory disclosure obligations.

beneficial ownership financial

"Tencent Holdings Limited may be deemed to have beneficial ownership of 3,800,438 Class A Ordinary Shares"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

sole voting power financial

"5 | Sole Voting Power 3,800,438.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"7 | Sole Dispositive Power 3,800,438.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Schedule 13G regulatory

"Amendment No. 1 to a Schedule 13G."

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

What percentage of Horizon Quantum (HQ) does Tencent report owning?

Tencent, through THL A12 Limited, reports beneficial ownership of 11.1% of Horizon Quantum’s Class A Ordinary Shares, based on 34,227,495 shares outstanding as of June 30, 2026.

How many Horizon Quantum (HQ) shares does Tencent beneficially own?

Tencent, via its wholly owned subsidiary THL A12 Limited, beneficially owns 3,800,438 Class A Ordinary Shares of Horizon Quantum, with sole voting and sole dispositive power over these shares.

How was Tencent’s 11.1% stake in Horizon Quantum (HQ) calculated?

The 11.1% figure is calculated using 3,800,438 Class A shares held by THL A12 Limited divided by 34,227,495 Class A Ordinary Shares outstanding as of June 30, 2026.

Who are the reporting persons in this Horizon Quantum (HQ) Schedule 13G/A?

The reporting persons are Tencent Holdings Limited and its direct wholly owned subsidiary THL A12 Limited, which together report beneficial ownership of Horizon Quantum’s Class A Ordinary Shares.

Does Tencent share voting or dispositive power over Horizon Quantum (HQ) shares?

For the reported 3,800,438 shares, Tencent and THL A12 Limited disclose sole voting power and sole dispositive power, with no shared voting or dispositive power reported.

What is the security class and CUSIP for Horizon Quantum (HQ) in this filing?

The filing covers Class A Ordinary Shares of Horizon Quantum Holdings Ltd. The shares are identified by CUSIP Y4000A102 in the ownership disclosure.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/14/2026 - 06:25 AM Accepted by SEC EDGAR 08/14/2026 - 06:25 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Horizon Quantum Holdings Ltd.

(Name of Issuer)

Class A Ordinary Shares

(Title of Class of Securities)

Y4000A102

(CUSIP Number)

06/30/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): Y4000A102

1

Names of Reporting Persons

Tencent Holdings Ltd

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

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 3,800,438.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,800,438.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,800,438.00

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)

11.1 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP Number(s): Y4000A102

1

Names of Reporting Persons

THL A12 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 3,800,438.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,800,438.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,800,438.00

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)

11.1 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Horizon Quantum Holdings Ltd.
(b)	Address of issuer's principal executive offices: 29 Media Cir. #05-22, Singapore, 138565
Item 2.
(a)	Name of person filing: Tencent Holdings Limited THL A12 Limited
(b)	Address or principal business office or, if none, residence: For both Tencent Holdings Limited and THL A12 Limited: 29/F, Three Pacific Place No. 1 Queen's Road East Wanchai, Hong Kong
(c)	Citizenship: Tencent Holdings Limited - Cayman Islands THL A12 Limited - British Virgin Islands
(d)	Title of class of securities: Class A Ordinary Shares
(e)	CUSIP No.: Y4000A102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: THL A12 Limited beneficially owns 3,800,438 Class A Ordinary Shares. Tencent Holdings Limited may be deemed to have beneficial ownership of 3,800,438 Class A Ordinary Shares beneficially owned by THL A12 Limited, which is a direct wholly-owned subsidiary of Tencent Holdings Limited.
(b)	Percent of class: See row 11 of the cover page of each reporting person. The foregoing calculation is based on an aggregate of 34,227,495 Class A Ordinary Shares outstanding as of June 30, 2026, as reported in the unaudited condensed consolidated interim financial statements of the Issuer filed as Exhibit 99.1 to the Issuer's current report on Form 6-K furnished to the U.S. Securities and Exchange Commission on August 4, 2026.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See row 5 of the cover page for each reporting person.
	(ii) Shared power to vote or to direct the vote: See row 6 of the cover page of each reporting person.
	(iii) Sole power to dispose or to direct the disposition of: See row 7 of the cover page of each reporting person.
	(iv) Shared power to dispose or to direct the disposition of: See row 8 of the cover page of each reporting person.
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:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

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.

Tencent Holdings Ltd

Signature:	/s/ Ma Huateng
Name/Title:	Ma Huateng, Director
Date:	08/14/2026

THL A12 Limited

Signature:	/s/ Li Qingjie
Name/Title:	Li Qingjie, Director
Date:	08/14/2026

Exhibit Information

99.1 Joint Filing Agreement (previously filed as Exhibit 99.1 to Schedule 13G filed by the reporting persons with the Securities and Exchange Commission on March 25, 2026).