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Horizon Quantum Holdings Ltd. Passive Investment Disclosure (>5%)

Horizon Quantum Holdings Ltd. Schedule 13G: Tencent Holdings Limited and affiliate THL A12 Limited reported beneficial ownership of 4,175,570 Class A Ordinary Shares, representing 13.1% of Class A shares outstanding.

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Form Type
SCHEDULE 13G

Rhea-AI Filing Summary

Horizon Quantum Holdings Ltd. Schedule 13G: Tencent Holdings Limited and affiliate THL A12 Limited reported beneficial ownership of 4,175,570 Class A Ordinary Shares, representing 13.1% of Class A shares outstanding. Shares outstanding were 31,833,549 as of March 19, 2026. Tencent states that THL A12 Limited is a direct wholly-owned subsidiary, and Tencent may be deemed to beneficially own the same 4,175,570 shares. The filing is a joint filing and is signed by Ma Huateng and Gu Tingting Jackie on March 25, 2026.

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Y4000A102

(CUSIP Number)
03/19/2026

(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





SCHEDULE 13G





SCHEDULE 13G



Tencent Holdings Ltd
Signature:/s/ Ma Huateng
Name/Title:Ma Huateng/Director
Date:03/25/2026
THL A12 Limited
Signature:/s/ Gu Tingting Jackie
Name/Title:Gu Tingting Jackie/Director
Date:03/25/2026
Exhibit Information

99.1 Joint Filing Agreement, dated March 25, 2026, by and between Tencent Holdings Limited and THL A12 Limited.

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