Deep Source Holdings Limited — Earnings Release 2025

Feb 26, 2026

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Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

DEEP SOURCE HOLDINGS LIMITED 至源控股有限公司*

(Formerly known as Theme International Holdings Limited) (incorporated in the Bermuda with limited liability) (Stock Code: 990)

POSITIVE PROFIT ALERT

This announcement is made by Deep Source Holdings Limited (the "Company", together with its subsidiaries, the "Group") pursuant to Rule 13.09 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules") and the Inside Information Provisions (as defined in the Listing Rules) under Part XIVA of the Securities and Futures Ordinance (Chapter 571 of the Laws of Hong Kong).

The board of directors of the Company (the "Board") wishes to inform the shareholders of the Company and potential investors that, based on the preliminary review of the management accounts of the Group for the twelve months ended 31 December 2025 (the "Relevant Year") and the information currently available to the Board, the Group expected to record an increase in net profit for the Relevant Year by approximately HK\$468 million, which represented an increase of approximately 126% as compared to the year ended 31 December 2024 (the "Corresponding Year"), to approximately HK\$840 million (net profit for the Corresponding Year: approximately HK\$372 million).

The increase in net profit for the Relevant Year was primarily attributable to:

• (i) The stable development of the Group's existing distribution, trading and processing segment and financial services segment;
• (ii) the increase in the sharing of profits of associates; and
• (iii) A provision for losses in the amount of approximately HK\$167,462,000 was made in the Corresponding Year related to suspected misappropriation of funds in a non-wholly owned subsidiary in Singapore.

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The information contained in this announcement is based only on the preliminary assessment by the Board upon its review of the unaudited management accounts of the Group for the twelve months ended 31 December 2025 and other information currently available to the Company which has not been reviewed or audited by the Company's independent auditor. The annual results of the Group may be subject to adjustments following further review by the Board and the audit committee of the Company. Shareholders of the Company and potential investors are advised to refer to the details of the Company's annual results announcement for the twelve months ended 31 December 2025 expected to be announced by the end of March 2026.

Shareholders of the Company and potential investors are advised to exercise caution when dealing in the shares of the Company.

By Order of the Board of Deep Source Holdings Limited Wu Lei Executive Director

Hong Kong, 26 February 2026

As at the date of this announcement, the executive Directors are Mr. Jiang Jiang and Mr. Wu Lei; the non-executive Directors are Mr. Ding Lin and Mr. Kang Jian; and the independent non-executive Directors are Mr. Liu Song, Ms. Chan Lai Ping and Mr. Wong Hok Bun Mario.

* For identification purpose only