Capital Markets · Report

Baidu files 6-K: foreign-issuer report (6-K)

Foreign-issuer report — material news from a non-U.S. company.

Official disclosureSlicast · November 4, 2026 at 12:00 UTC · US · Source: SEC EDGAR · BIDU

Monthly Return for Equity Issuer and Hong Kong Depositary Receipts listed under Chapter 19B of the Exchange Listing Rules on Movements

Islands with limited liability) Date Submitted:04 November 2026 I.Movements in Authorised / Registered Share Capital 1. Class of shares WVR ordinary sharesType of sharesAListed on the Exchange (Note 1)Yes Stock code (if listed)09888DescriptionClass A Ordinary Shares Multi-counter stock code89888RMBDescription Number of authorised/registered shares Par valueAuthorised/registered share capital Balance at close of preceding month 66,000,000,000USD0.000000625USD41,250

Increase / decrease (-)0USD Balance at close of the month66,000,000,000USD0.000000625USD41,250 2. Class of sharesWVR ordinary sharesType of sharesBListed on the Exchange (Note 1)No Stock code (if listed)N/ADescriptionClass B Ordinary Shares

Number of authorised/registered shares Par valueAuthorised/registered share capital Balance at close of preceding month 2,832,000,000USD0.000000625USD1,770 Increase / decrease (-)0USD Balance at close of the month2,832,000,000USD0.000000625USD1,770

3. Class of sharesPreference sharesType of sharesNot applicableListed on the Exchange (Note 1)No

Stock code (if listed) N/A Description Number of authorised/registered shares Par valueAuthorised/registered share capital Balance at close of preceding month 800,000,000USD0.000000625USD500 Increase / decrease (-)0USD Balance at close of the month800,000,000USD0.000000625USD500 Total authorised/registered share capital at the end of the month: USD43,520

II. Movements in Issued Shares and/or Treasury Shares and Public Float Sufficiency Confirmation 1. Class of shares WVR ordinary sharesType of sharesAListed on the Exchange (Note 1)Yes Stock code (if listed)09888DescriptionClass A Ordinary Shares Multi-counter stock code89888RMBDescription Number of issued shares (excluding treasury shares)Number of treasury sharesTotal number of issued shares Balance at close of preceding month2,209,541,17802,209,541,178 Increase / decrease (-)00 Balance at close of the month2,209,541,17802,209,541,178 Public float sufficiency confirmation (Note 4) Pursuant to Main Board Rule

13.32D(1) or 19A.28D(1) / GEM Rule 17.37D(1) or 25.21D(1), we hereby confirm that, in relation to the class of shares as set out above, as at the close of the month: the applicable public float requirement (see below) has been complied with the applicable public float requirement (see below) has not been complied with The applicable minimum public float requirement for the class of shares as set out above pursuant to Main Board Rule 13.32B or 19A.28B / GEM Rule 17.37B or 25.21B (as the case may be) is: Applicable public float thresholdInitial Prescribed Threshold—25% of the total number of issued shares in the class to which the listed shares belong (excluding treasury shares) Additional information 2. Class of sharesWVR ordinary sharesType of sharesBListed on the Exchange (Note 1)No Stock code (if listed)N/ADescriptionClass B Ordinary Shares Number of issued shares (excluding treasury shares)Number of treasury sharesTotal number of issued shares Balance at close of preceding month524,020,3200524,020,320 Increase / decrease (-)00 Balance at close of the month524,020,3200524,020,320 Remarks:

As at October 31, 2026, the balance of Class A ordinary shares excludes (i) 11,153,880 Class A ordinary shares (equivalent to 1,394,235 ADSs) issued to the depositary for bulk-issuance of ADSs reserved for issuances upon the future exercise or vesting of awards granted under the share incentive plans of Baidu, Inc. (the “Company”); (ii)

17,599,974 Class A ordinary shares that have not yet been cancelled, which were repurchased from the market before the voluntary conversion of the Company to dual primary listing on the Main Board of The Stock Exchange of Hong Kong Limited (the “Stock Exchange”) with effect from September 1, 2026; and (iii) 14,250,000 Class A ordinary shares held by a subsidiary of the Company.

III. Details of Movements in Issued Shares and/or Treasury Shares (A). Share Options (under Share Option Schemes of the Issuer) 1.

Class of sharesWVR ordinary sharesType of sharesAListed on the Exchange (Note 1)Yes Stock code (if listed)09888DescriptionClass A Ordinary Shares Multi-counter stock code89888RMBDescription Particulars of share option scheme Number of share options outstanding at close of preceding month Movement during the month Number of share options outstanding at close of the month Number of new shares issued during the month pursuant thereto (A1) Number of treasury shares transferred out of treasury during the month pursuant thereto (A2) Number of shares which may be issued or transferred out of treasury pursuant thereto as at close of the month The total number of shares which may be issued or transferred out of treasury upon exercise of all share options to be granted under the scheme at close of the month 1).2008 Share Incentive plan2,364,112Lapsed-724,8001,639,312001,639,3120 General Meeting approval date (if applicable) 16 December 2008 2).2018

Share Incentive Plan6,155,2566,155,256006,155,2560 General Meeting approval date (if applicable) 3).2023 Share Incentive Plan501,360501,36000501,3600 General Meeting approval date (if applicable) 4).2026 Share Incentive Plan00000273,356,149 General

Meeting approval date (if applicable) 26 August 2026 Increase in issued shares (excluding treasury shares):0WVR ordinary shares A (AA1)

Decrease in treasury shares: 0 WVR ordinary shares A (AA2) Total funds raised during the month from exercise of options:

(D). Any other Agreements or Arrangements to Issue Shares of the Issuer, including Options (other than Share Option Schemes) 1.

General Meeting approval date (if applicable) Number of new shares issued during the month pursuant thereto (D1)Number of treasury shares transferred out of treasury during the month pursuant thereto (D2)Number of shares which may be issued or transferred out of treasury pursuant thereto as at close of the month 1).2008 share incentive plan—Restricted Share Units16 December 2008000 2).2018 share incentive plan—Restricted Share Units0028,106,088 3).2023 share incentive plan—Restricted Share Units0064,979,168 4).2026 share incentive plan—Restricted Share Units26 August 2026000 Increase in issued shares (excluding treasury shares):0WVR ordinary shares A (DD1) Decrease in treasury shares:0WVR ordinary shares A (DD2) Remarks: As of October 31, 2026, (i) Nil restricted share unit was granted, vested, cancelled or lapsed under 2008 share incentive plan during the month. (ii)Nil restricted share unit was granted, vested or cancelled;

and 536,680 restricted share units lapsed under 2018 share incentive plan during the month. (iii)Nil restricted share unit was granted, vested or cancelled; and 757,792 restricted share units lapsed under 2023 share incentive plan during the month.

(iv)Nil restricted share unit was granted, vested, cancelled or lapsed under 2026 share incentive plan during the month.

(E). Other Movements in Issued Shares and/or Treasury Shares 1. Class of shares WVR ordinary sharesType of sharesAListed on the Exchange (Note 1)Yes Stock code (if listed)09888DescriptionClass A Ordinary Shares Multi-counter stock code89888RMBDescription Events At price (if applicable) Date of event (Note 2) General Meeting approval date (if applicable) Increase/ decrease (-) in issued shares (excluding treasury shares) during the month pursuant thereto (E1) Increase/ decrease (-) in treasury shares during the month pursuant thereto (E2) Number of shares redeemed or repurchased for cancellation but not yet cancelled as at close of the month (Note 3) CurrencyAmount 1).Repurchase of shares (shares repurchased for cancellation but not yet cancelled)26 August 2026-10,172,850 Increase/ decrease (-) in issued shares (excluding treasury shares):WVR ordinary shares A (EE1) Increase/ decrease (-) in treasury shares:WVR ordinary shares A (EE2) Remarks: As of October 31, 2026, the Company repurchased an aggregate of 10,172,850 Class A ordinary shares on the Stock Exchange, which were pending cancellation and not yet cancelled. Total increase/ decrease (-) in issued shares (excluding treasury shares) during the month (i.e. Total of AA1 to EE1):0WVR ordinary shares A Total increase/ decrease (-) in treasury shares during the month (i.e. Total of AA2 to EE2):0WVR ordinary shares A

V. Confirmations Not applicable Submitted by:Lin Juan Title:Joint Company Secretary (Director, Secretary or other Duly

Authorised Officer)

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