AS OF MAY 6, 2021 KASE WILL CHANGE PARAMETERS OF SHARES INCLUDED IN KASE INDEX REPRESENTATIVE LIST

/KASE, April 30, 2021/ – As of May 6, 2021, following a decision of the Committee on Indices and Securities Valuation of Kazakhstan Stock Exchange (KASE) dated April 30, 2021 new parameters of shares included in KASE Index's representative list – portions of shares in free float and restrictive coefficients – were determined. The table below shows the new and current share parameters that have an impact on the value of KASE Index. -------------------------------------------------------------------------------------------- Effective as of May 6, 2021 Effective until May 6, 2021 -------------- ------- ---------------- -------------- ------- ---------------- number of free restrictive number of free restrictive Share ticker outstanding float coefficient (Ri) outstanding float coefficient (Ri) shares (Fi), % shares (Fi), % ------------ -------------- ------- ---------------- -------------- ------- ---------------- CCBN 188,029,035 40.4 1.0000000 180,009,899 38.4 1.0000000 HSBK 11,754,049,397 35.5 0.0414290 11,754,049,397 35.5 0.1040244 KCEL 200,000,000 25.0 0.2076726 200,000,000 25.0 0.4088671 KEGC 259,998,610 10.0 0.5846732 259,998,610 10.0 1.0000000 KZAP 259,356,608 25.0 0.0337129 259,356,608 25.0 0.1196395 KZTK 10,706,024 23.0 0.3576434 10,706,024 23.0 0.9055328 KZTO 384,628,099 10.0 0.6083395 384,628,099 10.0 1.0000000 -------------------------------------------------------------------------------------------- NOTES TO TABLE KASE Index – KASE equity market index, showing the change in prices of shares from the representative list for calculation of the index with account to capitalization of issuers and number of free-floating shares (free float). One stock may not exceed 15 % weight in the index. KASE Index is calculated within a trading day as deals in the representing stocks are concluded. In case no deals, parameters of which are required for calculation of the KASE Index, were made in the stock during a trading day, for purposes of such calculation, results of the last resultant trading session will be used. The Methodology of index calculation is regulated by KASE's internal document "Methodology of Stock Market Indicators Calculation" available at KASE website at: http://www.kase.kz/files/normative_base/indicators_met_eng.pdf The index page is available at: http://www.kase.kz/en/index_kase Ticker shows: issuer code of a security traded on KASE (first 4 symbols, which is also the code of an ordinary share); share category (if the fifth symbol is "p", preferred share); order number of the share issue (if required, it is the sixth numeric symbol). Issuers' codes: CCBN – Bank CenterCredit JSC; HSBK – Halyk Savings Bank of Kazakhstan JSC; KCEL – Kcell JSC; KEGC – Kazakhstan Electricity Grid Operating Company "KEGOC" JSC (KEGC); KZAP – National Atomic Company Kazatomprom; KZTK – Kazakhtelecom JSC; KZTO – KazTransOil JSC. Number of outstanding shares – parameter, which is determined independently by KASE on the basis of listed company share register extract data or information provided by the company as a number of outstanding shares of a listed company net of those repurchased. KASE is taking into account the number of outstanding shares, which is confirmed by documents available on KASE. Free float (Fi), % – parameter, determined by KASE's internal document "Listing Rules". Restrictive coefficient (Ri) – parameter limiting weight of influence of one stock on index value to fifteen percent. [2021-04-30]