Anhui Xinbo Aluminum Industry Co., Ltd. Announcement on the Completion of Share Repurchase Cancellation and Changes in Equity of Controlling Shareholder, Actual Controller, and Their Concerted Parties

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Security Code: 003038 Stock Short Name: Xinbo Co., Ltd. Announcement No.: 2026-025

Anhui Xinbo Aluminum Industry Co., Ltd.

Announcement on the Completion of the Share Repurchase and Cancellation and the Changes in the Equity Interests of the Controlling Shareholder, the Actual Controller, and Their Parties Acting in Concert

All of the Company and the members of its board of directors warrant that the information disclosed herein is true, accurate, and complete, and there are no false records, misleading statements, or material omissions.

Key Matters:

1. Given that, in the 2025 stock option and restricted stock incentive plan (hereinafter, the “Incentive Plan”) of Anhui Xinbo Aluminum Industry Co., Ltd., 1 incentive recipient who was granted restricted stock has resigned, the Company will repurchase and cancel a total of 36,000 shares of restricted stock that have been granted but have not yet vested for such incentive recipient.

2. On March 31, 2026, China Securities Depository and Clearing Co., Ltd. Shenzhen Branch confirmed that the Company’s repurchase and cancellation of certain restricted stock under this round has been completed.

Pursuant to the《Administrative Measures for Equity Incentive of Listed Companies》and relevant provisions of the Company’s《2025 Stock Option and Restricted Stock Incentive Plan (Draft)》《2025 Stock Option and Restricted Stock Incentive Plan Implementation and Appraisal Measures》，on March 3, 2026, the Company convened the 29th meeting of the third session of the board of directors to examine and approve the《Proposal on the Cancellation of Certain Stock Options and the Repurchase and Cancellation of Certain Restricted Stock Under the 2025 Stock Option and Restricted Stock Incentive Plan》. The board of directors agreed that the Company should repurchase and cancel a total of 36,000 shares of restricted stock granted to the 1 incentive recipient who has resigned but has not yet vested.

Repurchase and cancellation price: According to the provisions of the Company’s Incentive Plan for this round, the repurchase price for this round is the grant price (RMB 8.43 per share).

Total repurchase amount and source of funds: A total of 36,000 shares of restricted stock will be repurchased and canceled in this round, with the total repurchase amount of RMB 303,480.00. The source of repurchase funds is the Company’s own funds.

3. Due to the repurchase and cancellation of shares, the Company’s total share capital changes from 243,695,765 shares to 243,659,765 shares,

which results in that, while the number of shares held by the Company’s controlling shareholder, the actual controller Tang Kaijian, and their parties acting in concert, Nanjing Tianding Venture Investment Partnership (Limited Partnership), remains unchanged, the combined shareholding proportion passively increases from 34.8907% to 34.8958%, increasing by 0.0051%.

I. Procedures that have been fulfilled under this Incentive Plan

(1) On February 14, 2025, the Company convened the 18th meeting of the third session of the board of directors to examine and approve the proposals《On the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan (Draft)〉and its Summary》,《On the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan Implementation and Appraisal Measures〉》and《On the Proposal to Request the General Meeting of Shareholders to Authorize the Board of Directors to Handle Matters Related to the Company’s 2025 Stock Option and Restricted Stock Incentive Plan》;

(2) On February 14, 2025, the Company convened the 17th meeting of the third session of the board of supervisors to examine and approve the proposals《On the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan (Draft)〉and its Summary》,《On the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan Implementation and Appraisal Measures〉》and《On the Proposal to Verify the List of Incentive Recipients for the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan〉》;

(3) From February 17, 2025 to February 26, 2025, the Company公示 the names and positions of the incentive recipients for the initial grant of this Incentive Plan in the form of an internal document notice. As of the end of the public notice period, the board of supervisors had received no objections from any employees regarding the incentive recipients under this Incentive Plan;

(4) On February 27, 2025, the Company disclosed the《Board of Supervisors’ Audit Opinions and Explanatory Statement on the Public Notice Regarding the List of Incentive Recipients for the First Grant Under the Company’s 2025 Stock Option and Restricted Stock Incentive Plan》;

(5) On March 5, 2025, the Company convened the 2025 second extraordinary general meeting of shareholders to examine and approve the proposals《On the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan (Draft)〉and its Summary》,《On the Company’s〈2025 Stock Option and Restricted Stock Incentive Plan Implementation and Appraisal Measures〉》and《On the Proposal to Request the General Meeting of Shareholders to Authorize the Board of Directors to Handle Matters Related to the Company’s 2025 Stock Option and Restricted Stock Incentive Plan》;

(6) On March 6, 2025, the Company disclosed the《Self-inspection Report on the Trading of Company’s Stock by Insiders Who Were Aware of Material Information in Relation to the 2025 Stock Option and Restricted Stock Incentive Plan and Incentive Recipients》. The Company conducted a self-inspection on the trading of the Company’s stock by the insiders and incentive recipients within the 6 months prior to the announcement of this Incentive Plan. No trading behavior was found in which such insiders or incentive recipients used material inside information related to this Incentive Plan to trade the Company’s stock;

(7) On March 11, 2025, the Company convened the 19th meeting of the third session of the board of directors and the 18th meeting of the third session of the board of supervisors to examine and approve the proposal《On the Grant of Stock Options and Restricted Stock to Incentive Recipients Under the 2025 Stock Option and Restricted Stock Incentive Plan for the First Time》. The initial grant/授予 date of stock options and restricted stock under this Incentive Plan was set as March 11, 2025. 2.4510 million stock options were granted to 31 incentive recipients, with an exercise price of RMB 12.64 per option; 3.6900 million shares of restricted stock were granted to 46 incentive recipients, with a grant price of RMB 8.43 per share;

(8) On March 3, 2026, the Company convened the 29th meeting of the third session of the board of directors to examine and approve the proposals《On the Grant of Stock Options and Restricted Stock Granted for Reserved Shares to Incentive Recipients Under the 2025 Stock Option and Restricted Stock Incentive Plan》and《On the Cancellation of Certain Stock Options and the Repurchase and Cancellation of Certain Restricted Stock Under the 2025 Stock Option and Restricted Stock Incentive Plan》. The remuneration and appraisal committee of the board of directors verified the related matters and issued audit opinions, and the lawyers issued corresponding legal opinions.

(9) On March 12, 2026, the Company disclosed the《Announcement on Repurchase and Cancellation of Certain Restricted Stock to Reduce Registered Capital and Notice to Creditors》（Announcement No.: 2026-020).

II. Details of the repurchase and cancellation of restricted stock this time

1. Reasons for repurchase and cancellation: Given that, in this Incentive Plan, 1 incentive recipient who was granted restricted stock has resigned, the Company convened the 29th meeting of the third session of the board of directors on March 3, 2026 to examine and approve the《Proposal on the Cancellation of Certain Stock Options and the Repurchase and Cancellation of Certain Restricted Stock Under the 2025 Stock Option and Restricted Stock Incentive Plan》. The board of directors agreed that the Company should repurchase and cancel a total of 36,000 shares of restricted stock granted to the 1 incentive recipient who has resigned but has not yet vested.

2. Repurchase price: According to the provisions of the Company’s Incentive Plan for this round, the repurchase price for this round is the grant price (RMB 8.43 per share).

3. Total repurchase amount and source of funds: A total of 36,000 shares of restricted stock will be repurchased and canceled in this round, with the total repurchase amount of RMB 303,480.00. The source of repurchase funds is the Company’s own funds.

4. Completion status of repurchase and cancellation: The Company has applied to China Securities Depository and Clearing Co., Ltd. Shenzhen Branch to handle the repurchase and cancellation procedures for the 36,000 shares of restricted stock that have been granted but have not yet vested, and completed the cancellation on March 31, 2026. The Company will subsequently handle the relevant industrial and commercial change registration procedures in accordance with the law.

III. Changes in the Company’s share structure after the repurchase and cancellation of restricted stock

After completion of the repurchase and cancellation of this round of restricted stock, the Company’s total share capital decreases from 243,695,765 shares to 243,659,765 shares, and the changes in the Company’s share structure are as follows:

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IV. Changes in equity interests of the controlling shareholder, the actual controller, and their parties acting in concert

After completion of the repurchase and cancellation of certain restricted stock in this round, the number of shares held by the Company’s controlling shareholder, the actual controller Tang Kaijian, and the shares held by their parties acting in concert remains unchanged. The combined shareholding proportion passively increases from 34.8907% to 34.8958%, an increase of 0.0051%; the detailed changes are as follows:

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Note: If the total amount of the above data does not match the sum of the figures of each sub-item due to decimals, it is attributable to rounding.

V. Impact of this repurchase and cancellation of restricted stock on the Company

This repurchase and cancellation of certain restricted stock will not affect the continued implementation of the Company’s incentive plan. In addition, the Company’s cash flow situation is good, and the repurchase and cancellation of restricted stock will not have a material impact on the Company’s operations, management, financial condition, or operating results.

VI. Documents for Reference

《Detailed List of Shares Canceled by China Securities Depository and Clearing Co., Ltd.》

This is hereby announced.

Anhui Xinbo Aluminum Industry Co., Ltd.

Board of Directors

April 1, 2026

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