Voting Results of the EGM of Shareholders

AIX: KAP, KAP.Y (GDR)

LSE: KAP (GDR)

21 October 2025, Astana, Kazakhstan

Voting Results of the Extraordinary General Meeting of Shareholders

National Atomic Company Kazatomprom JSC ("Kazatomprom" or "the Company") announces the absentee voting results on each issue of the agenda of the Extraordinary General Meeting of Shareholders ("the EGM") summed up on 20 October 2025 at 06:00 pm local time (GMT+5).

At the time of the EGM, the total number of outstanding shares equaled to 259,356,608. According to the shareholder register and information on the owners of shares in nominal holding as of 19 September 2025, the total number of voting shares of the Company amounted to 227,204,816. Shareholders and their authorized representatives holding 225,431,466 shares (representing 99.22% of the total number of voting shares) submitted their votes.

Shareholders voted on each issue of the EGM agenda and respective decisions were made.

Amendments to the agreements for the sale and purchase of natural uranium concentrates

The EGM has approved the conclusion of the Letter Agreement No. 3 to the Long-term contract with CNNC Overseas Limited ("CNOL") No. CNOL2023-50 dated 26 June 2023 for the sale and purchase of natural uranium concentrates as well as the updated version of the Long-term agreement for the sale and purchase of natural uranium concentrates with China National Uranium Corporation Limited ("CNUC").

The conclusion of the respective transaction with CNUC was approved by the decision of the Extraordinary General Meeting of Shareholders of the Company dated 15 November 2024. However, the agreement has not yet been concluded as the authorized bodies of CNUC proposed certain editorial amendments to its provisions.

Thus, the amendments to the above-mentioned agreements for the sale and purchase of natural uranium concentrates with CNOL and CNUC are purely editorial, material terms of these transactions (volumes, prices, delivery schedules) remain unchanged and confidential.

CNUC, a company registered in the People's Republic of China, and CNOL, a company registered in Hong Kong, both are affiliated entities of China National Nuclear Corporation (CNNC) - a state corporation of the People's Republic of China involved in all areas of nuclear industry. CNNC is the main operator of nuclear power plants in China and is engaged in R&D in nuclear energy and technologies, construction of nuclear power plants and production of nuclear fuel.

For more information, please contact:

Extraordinary General Meeting of Shareholders Inquiries

Aigerim Dosanova, Corporate Secretary

Tel.: +7 7172 45 82 84

Email: [email protected]

Investor Relations Inquiries

Botagoz Muldagaliyeva, Director, Investor Relations

Tel.: +7 7172 45 81 80/69

Email: [email protected]

Public Relations and Media Inquiries

Daniyar Oralov, Director, Public Relations

Tel: +7 7172 45 80 63

Email: [email protected]

A copy of this announcement is available at www.kazatomprom.kz.

About Kazatomprom

Kazatomprom is the world's largest producer of uranium with the Company's attributable production representing approximately 21% of global primary uranium production in 2024. The Group benefits from the largest reserve base in the industry and operates, through its subsidiaries, JVs and Associates, 27 deposits grouped into 14 mining assets. All of the Company's mining operations are located in Kazakhstan and extract uranium using ISR technology with a focus on maintaining industry-leading health, safety and environment standards (ISO 45001 and ISO 14001 certified).

Kazatomprom securities are listed on the London Stock Exchange and Astana International Exchange. Kazatomprom is the national atomic company in the Republic of Kazakhstan, and the Group's primary customers are operators of nuclear generation capacity, the main export markets for the Group's products are Asia, Europe and North America. The Group sells uranium and uranium products under long-term contracts, short-term contracts as well as in the spot market, directly from its headquarters in Astana, Kazakhstan, and through its Switzerland-based trading subsidiary, Trade House KazakAtom AG (THK).

For more information, please see the Company website at www.kazatomprom.kz.

Forward-looking statements

All statements other than statements of historical fact included in this communication or document are forward-looking statements. Forward-looking statements give the Company's current expectations and projections relating to its financial condition, results of operations, plans, objectives, future performance and business. These statements may include, without limitation, any statements preceded by, followed by or including words such as "target," "believe," "expect," "aim," "intend," "may," "anticipate," "estimate," "plan," "project," "will," "can have," "likely," "should," "would," "could" and other words and terms of similar meaning or the negative thereof. Such forward-looking statements involve known and unknown risks, uncertainties and other important factors beyond the Company's control that could cause the Company's actual results, performance or achievements to be materially different from the expected results, performance or achievements expressed or implied by such forward-looking statements. Such forward-looking statements are based on numerous assumptions regarding the Company's present and future business strategies and the environment in which it will operate in the future.

THE INFORMATION WITH RESPECT TO ANY PROJECTIONS PRESENTED HEREIN IS BASED ON A NUMBER OF ASSUMPTIONS ABOUT FUTURE EVENTS AND IS SUBJECT TO SIGNIFICANT ECONOMIC AND COMPETITIVE UNCERTAINTY AND OTHER CONTINGENCIES, NONE OF WHICH CAN BE PREDICTED WITH ANY CERTAINTY AND SOME OF WHICH ARE BEYOND THE CONTROL OF THE COMPANY. THERE CAN BE NO ASSURANCES THAT THE PROJECTIONS WILL BE REALISED, AND ACTUAL RESULTS MAY BE HIGHER OR LOWER THAN THOSE INDICATED. NONE OF THE COMPANY NOR ITS SHAREHOLDERS, DIRECTORS, OFFICERS, EMPLOYEES, ADVISORS OR AFFILIATES, OR ANY REPRESENTATIVES OR AFFILIATES OF THE FOREGOING, ASSUMES RESPONSIBILITY FOR THE ACCURACY OF THE PROJECTIONS PRESENTED HEREIN.

The information contained in this communication or document, including but not limited to forward-looking statements, applies only as of the date hereof and is not intended to give any assurances as to future results. The Company expressly disclaims any obligation or undertaking to disseminate any updates or revisions to such information, including any financial data or forward-looking statements, and will not publicly release any revisions it may make to the Information that may result from any change in the Company's expectations, any change in events, conditions or circumstances on which these forward-looking statements are based, or other events or circumstances arising after the date hereof.