APT Electronics Co., Ltd. — Major Shareholding Notification 2026

Apr 20, 2026

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.

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APT Electronics Co., Ltd. 廣東晶科電子股份有限公司

(A joint stock company incorporated in the People’s Republic of China with limited liability) (Stock Code: 2551)

VOLUNTARY ANNOUNCEMENT

PROPOSED FURTHER INCREASE IN SHAREHOLDING OF H SHARES OF THE COMPANY BY THE CONTROLLING SHAREHOLDER GROUP AND SENIOR MANAGEMENT

This announcement is made by APT Electronics Co., Ltd. (the “ Company ”, together with its subsidiaries, the “ Group ”) on a voluntary basis.

On April 20, 2026, the Company received the notices from the controlling shareholder group (the “ Controlling Shareholder Group ”)[1] and senior management (the “ Senior Management ”)[2] of the Company, stating that, based on their optimistic assessment of the Group’s future development prospects, confidence in the Group’s sustained, stable and healthy growth, and full recognition of the Group’s long-term investment value, the Controlling Shareholder Group and Senior Management intend to further increase their shareholdings in the Company’s H shares through open market transactions within three months from the date of this announcement (the “ Shareholding Increase Plan ”). The Shareholding Increase Plan by the Controlling Shareholder Group and Senior Management will be implemented on the basis that the Company maintains the minimum public float required under the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the “ Listing Rules ”), so as to ensure the Company’s continuing compliance with the relevant regulatory requirements.

1 has the meaning ascribed to it under the Listing Rules and refers to Mr. Xiao Guowei David, Mr. Chan Philip Ching Ho, Mr. Yuan Lie Ming Peter, APTESS Company Limited, Giant Power Limited, Ms. Loh Rebecca May-Leung, Advanced Photoelectronic Technology Limited, Guangzhou Jingyu Equity Investment Partnership (Limited Partnership), Guangzhou Jingling Investment Partnership (Limited Partnership), Guangzhou Jingrui Investment Partnership (Limited Partnership) and Guangzhou Jingshi Investment Partnership (Limited Partnership).

2 refers to Mr. Xiao Guowei David, Mr. Hou Yu, Mr. Zeng Zhaoming, Ms. Zhou Baiyun and Mr. Zheng Longfeng.

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As of the date of this announcement, the Controlling Shareholder Group is interested in an aggregate of 65,218,835 H shares and 171,316,739 domestic shares, representing approximately 44.04% of the total issued shares of the Company. In accordance with the intention of the Controlling Shareholder Group, upon implementation of the Shareholding Increase Plan, the total shareholding of the Controlling Shareholder Group in the Company is expected not to trigger a mandatory offer obligation under Rule 26 of the Code on Takeovers and Mergers with regard to shareholding interest of a controlling shareholder of a listed company in Hong Kong which lies between 30% and 50% during any 12-month period (i.e. will not increase its aggregate shareholding by more than 2% compared to its lowest shareholding level in the 12 months preceding the proposed acquisition). Based on the information available to the Company and to the best knowledge of the Board, it is expected that upon the completion of the Shareholding Increase Plan, the Company will continue to maintain the minimum public float percentage requirement under the Listing Rules.

In accordance with relevant regulations, the Company will continue to monitor the implementation of the Shareholding Increase Plan and perform its information disclosure obligation in a timely manner.

There are certain risks that the Shareholding Increase Plan may not be implemented, or may be partially not implemented, as a result of changes in the capital market or other unpredictable factors. The Company will perform its information disclosure obligation in a timely manner where the above risks occurred during the implementation of the Shareholding Increase Plan. Securities holders and potential investors of the Company are advised to exercise caution when dealing in the securities of the Company.

By order of the Board APT Electronics Co., Ltd. Xiao Guowei David Chairperson of the Board

Hong Kong, April 20, 2026

As at the date of this announcement, the Board comprises Mr. Xiao Guowei David and Mr. Hou Yu as executive Directors; Mr. Chan Philip Ching Ho, Mr. Yuan Lie Ming Peter and Mr. Huang Guansheng as non-executive Directors; Ms. Zhang He, Ms. Lin Nan, Ms. Ding Hui and Mr. Chan Chi Kong as independent non-executive Directors.

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