兆易创新:H股公告-翌日披露报表

(Equity issuer - changes in issued shares or treasury shares, share buybacks andlor on-market sales of treasury shares)

Instrument: Equityissuer Status: New Submission

Name of Issuer: GigaDevice Semiconductor Inc.

Date Submitted: 24August2026

SectintedbsueeegedreasrecsarantulofulegExchange (the“GEMRules). Listnecuocgngedtcangeaulelofhulevehnecuo

1.Class of shares Ordinary shares Type of shares A Listed on the Exchange

Stock code (if listed) 603986 De scription ASha ares listed on the ShanghaiStock Exchange

A.Changes in issued shares or treasury shares

Events Changes in issued shares(excluding treasury shares) Changesin treasuryshares lssue/sellingprice pershare (Note 4) Totalnumber of issuedshares

Number of issuedshares (excludingtreasury shares) As a % of existingnumber of issued shares(excluding treasuryshares)before therelevant event(Note3) Number of treasuryshares

Opening balance as at (Note 1) 21August 2026 668,491,934 ℃ 668,491,934

1) Other (please specify)See PartBDate of changes 24 August 2026 0 %

Closing balance as at (Notes 5 and 6) 24 August 2026 668,491,934 0 668,491,934

B. Shares redeemed or repurchased for cancellation but not yet cancelled as at the closing balance date (Notes 5 and 6) ℃Not applicable

1). Shares repurchased for cancellation but not yet cancelledDate of changes 21 August 2026 247,000 0.04% RMB 406.48

2) Shares repurchased for cancellation but not yet cancelledDate of changes 24August 2026 517,100 0.08% RMB 383.37

℃Not applicable

ursuantainorduleuleerefiosedgeoliftlcearlerfsharessseutcasesedbbfersftssuedumpeaeedherequirements and, insofar as applicable:

(Note7)

(i)allmoney due to the listedissuer in respect of the isue of shares, or sale or transerof treasury shares has been received by it;

(ii)allpre-conditions for the listing imposed by the Main Board Rules / GEM Rules under “Qualifications of istinghave been fulfilled

ii)all if any)conditions contained in the formal lettergrantinglisting of and permissionto deal in the securities have been flfild

(iv)allthe securities of each class are in allrespects identical (Note 8)

(vadocunseedbhemanesdingUpandselansvsionsncee edithheegista anesaveeendledandatoplinehbeen made with all other legal requirements;

(vialtedeni umentsoftitavendeliveedeade eliveedaeengepaedande eliveedindncewthe erisueen

(vipletiaselaceoftheuseberflloeotingcumttaebeeurcsedgeed eurchasedtandhe pucasconsideration for all such property has been duly satisfied; and

(vihetusdeedplatingoebueaoctsdshaseepeddeecteddoffqudbaaeedithRegistrarof Companies.

Notes to Section I:

1. PleaseinsertheclosingbalancedateofteastNextDayDiscsureReturnublisedpursuant tMain BoardRuleAGEMRule17AoMonthlyReturn pursuantoainBoard Rule 13.25B/GEM Rule 17.27B, whichever is the later.

2. PleasesetoutallangesinisuedsharesortreasurysharesrequingdisclosurepursuanttMainBoardRule2AGEMRule17Atogethewiththerelevan datesofchangesEceorddvdlithioinableeentlevatesshletuexampleutlesuefaesaesultfteeercsesfaetdereeshareptcemoutlvendereamiblemustbeagregatedanddisclsedasoeategoryoweverifteissesedfroexercisesofsharetionunderhareoptischemesoonversiosofnvernotes, these must be disclosed as 2 separate categories.

3. Thepercentagecangenteumbefsuedharesecldrasuryaresfthelistedssurisbealcuatedbyfeenceteopeninganceofeumefsuedshares (excluding treasury shares) being disclosed in this Next Day Disclosure Return.

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4. lnthecaseofasharerepurchaseorredemptionthessuelselingpricepersharehallbeconsrued asrepurchaseprice pershareoredemptioprice pershare

Where shares have been ssued/soldrepurchasedredeemed at more than one price per share, avolume-weighted average price per share should begiven

5. The closing balance date is the date of the last relevant event being disclosed.

6. Forepurchaseoedemtioofshare,disclsueisequiedenteelevaneventhascurdsjectoeprovsonsofMainoardules4)aAandGEM Rules 13.13(1), 17.27A and 17.35), even if the repurchased or redeemed shares have not yet been cancelled.

lfrepurcasedoedeemedhareareceledumtfhepucseoedempitheosingaanedaeehaemanrtfesudhat the closing balance date in Part A. Details of these repurchased or redeemed shares shallbe disclosed in Part B.

7. ltems (i) to vii)are suggested forms of confirmation. The isted ssuer may amend the item(s) that is/are not applicable to meet individual cases

8. “Identical”means in this context:

- the securities are of the same nominal value with the same amount called up or paid up

SectionlIust alsobecompledbaisedissuerwhereit hasmadearepurchaseof shares whichisdiscloseable underMainoardRule164a/GEMRule13()

Repurchase report

SectionI

1.Class of shares Ordinary shares Type of shares A Listed on theExchange No

Stockcode (if listed) 603986 Description A Shares listed on the Shanghai Stock Exchange

A. Repurchasereport

Trading date Numberofsharesrepurchased Method of repurchase(Note1) Repurchase price per share orhighest repurchase price per share$ Lowest repurchaseprice per share $ Aggregate price paid S

1) 24August 2026 517,100 On another stock exchangeShanghaiStock Exchange RMB 403 RMB 378.01 RMB 198,242,897.67

Totalnumber of shares 517,100 Aggregate price paid SRMB 198,242,897.67repurchased

Number of sharesrepurchased forcancellation 517,100

Number of sharesrepurchased for holdingas treasury shares 0

B. Additional information for issuer who has a primary listing on the Exchange1). Date of the resolution granting the repurchase mandate2). Total number of shares which the issuer is authorised to repurchase under the repurchase mandate3). Number of shares repurchased on the Exchange or another stock exchange under the repurchase mandate4). As a%of number of issued shares excluding treasury shares)as at the date of the resolution granting the repurchase mandate(a)x100/number of isued shares(excludingtreasury shares)as at the date ofthe resolutiongranting the repurchase mandate5). Moratorium period for any issue of new shares, or sale or transfer of treasury shares after the share repurchase(s) set out in Part A U(Note2)

(a)

pto

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Not applicable

Notes to Section II

1.Pleasestatewetherteepurchase wasmadeontheExchange,onanothersockexchangestatingthenameoftheexcange)bprivte rrangementorbyeneaofer

2. SubjectotcrveutiainoardRulERuleerakeaewssuareleotransfefareasueanounceropdefresalernffaedtrcefrestcnwithout the prior approval of the Exchange.

underMainBoardRule10.06B/GEMRule13.14B. Sectinstmedisesetsdealeresrarecnetcecaneesusdhsds

Report of on-market sale of treasury shares

℃Not applicable

Submitted by:XieFeiwang

(Name)

Title:Joint CompanySecretary

(Director, Secretary or other Duly Authorised Officer)

翌日披露報表(股份發行人—已發行股份或库存股份變動、股份購回及/或在場内出售库存股份)

表格類别: 股票状態: 新提交

公司名橘: 兆易創新科技集團股份有限公司

呈交日期: 2026年8月24日

如上市發行人的已發行股份或库存股份出现愛動而须根披《香港聯合交易所有限公司（香港聊交所」）證券上市规则》（“《主板上市规划》)第13.25A條／《香港聯合交易所有限公司GEM證券上市规则》(《GEM上市规则》j)第17.27A條作出披露，必须填妥第一章節。

1.股份分類普通股股份類别 A 於香港聊交所上市否 +

證券代號 (如上市) 603986 明於上海證券交易所上市之A股

A.已發行股份或库存股份變動

事件已發行股份（不包括库存股份）愛動库存股份變動每股發行/出售價(注4) 已發行股份總数

已發行股份（不包括库存股份)数目占有關事件前的现有已發行股份（不包括库存股份)数目百分比(3) 库存股份数目

於下列日期開始時的结存(1) 2026年8月21日 668,491,934 0 668,491,934

1). 其他 (請注明)見B部分愛動日期 2026年8月24日 % +

於下列日期结束時的结存(注5及6）2026年8月24日 668,491,934 0 668,491,934

B.赎回/購回股份 (凝注销但截至期終结存日期尚未注銷)(主5及6) ℃不適用

1). 回購但尚未注銷发動日期的股份2026年8月21日 247,000 0.04% RMB 406.48

2) 回購但尚未注销變動日期的股份2026年8月24日 517,100 0.08% RMB 383.37

□不適用

根據《主板上市规则》第13.25C條／《GEM上市规则》第17.27C條，我們在此確訓，據我們所知所信，第一章節所述的每项股份發行或库存股份出售或轉護已獲驳行人董事會正式授權批准，业遵照所有適用上市规则、法律及其他监管规定進行，在適用的情况下：

(i)上市發行人已收取其在是次股份發行或库存股份出售或轉謢應得的全部款项;

(i）已履行《主板上市规则》／《GEM上市规则》「上市资格项下所规定有關上市的一切先决條件;

(ii)批准證券上市買賣的正式函件内所载的所有條件（如有）已予履行;

(iv)每類證券在各方面均匾相同(注8))

(v）《公司（清盤及離项條文）條例》规定送呈公司注册處處长存檔的全部文件已經正式存橘，而一切其他法律规定亦已全部遵行;

(vi)確實所有權文件按照發行、出售或轉謢條款的规定經已發送/现正准備發送/正在准備中业将會發送

(vii)發行人的上市文件所示已由其購買或同意購買的全部物業的交易已完成；全部該等物業的購買代價已予缴付；及

(vii)有關债券、借贷股份、票據或公司债券的信托契約/平選契據经已製借及簸署，有關详情已送呈公司注册處處長存檔（如法律如此规定）。

第一章節主释

1. 靖填上根據《主板上市规则》第13.25A條／《GEM上市规则》第17.27A條刊發的上一份翌日披露报表j或根據《主板上市规则》第13.25B條／《GEM上市规则》第17.27B條刊發的上一份月報表」（以较後者為准）的期终结存日期。

2. 請列出所有根城《主板上市规则》第13.25A條／《GEM上市规则》第17.27A條须披露的已發行股份或库存股份愛動，连同有關的愛動日期。每固類别须獨立披露，业提供充足资料，以便使用者可在上市發行人的「月報表内識别有關類别。例如：因多次根據同一股份期權计劃行使股份期權或多次根據同一可换股票據进行换股而多次發行的股份，必须综合計算，在同一個類别下披露。然而，若因根據兩项股份期權计劃行使股份期權或根據兩项可换股票據進行换股而进行的發行，则必须分開兩固類别披露。

3. 上市發行人已發行股份（不包括库存股份）数目變動的百分比将參照該份翌日披露报表,所披露的已發行股份（不包括库存股份）的期初结存計算。

4. 在購回/癫回股份的情况下，「每股發行/出售價」應理解為每股購回價]或每股廳回價」。

若股份曾以超過一個每股價格發行/出售/購回/赎回，则须提供每股成交量加權平均價格。

5. 期终结存日期為最後一宗披露的相關事件的日期。

6. 就鹏回/廳回股份而言，若有關事件經已發生，则须作出相關披露（受《主板上市规则》第10.06(4)(a)，13.25A及13.31條／《GEM上市规则》第13.13(1)，17.27A及17.35條的规定所规限），即使該等購回/赎回股份尚未被注销。

若購回/廳回股份將於期終结存日期之後購回/赚回结算完成之时予以注銷，则該等購回/赎回股份仍属A部所述期終结存當日的已發行股份的一部分。該等購回/赚回股份的許情應在B部作出披露。

7. (i)至 (vii)项為確内容的建識格式。上市發行人可按固别情况就不適用的项目予以修訂。

8. 在此相同指

- 證券的面值相同，须缴或缴足的股款亦相同;

- 證券有權领取同一期間内按同一息率計算的股息／利息，下次派息時每單位應獲派發的股息／利息额亦完全相同（總额及浮额）；及

- 證券附有相同權益，如不受限制的轉、出席會謢及於會上投票，在所有其他方面享有同等權益。

如上市發行人購回股份而须根據《主板上市规则》第10.06(4)(a)條／《GEM上市规则》第13.13(1)條作出披露，则亦须填妥第二章節。