Sec Form 3 Filing - Li Yanhong Robin @ Baidu, Inc. - 2026-03-18

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Li Yanhong Robin 2. Issuer Name and Ticker or Trading Symbol Baidu, Inc. [ BIDU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) NO. 10 SHANGDI 10TH STREET 3. Date of Earliest Transaction (MM/DD/YY) 03/18/2026 (Street) BEIJING100085 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A ordinary shares 3,013,200 D Class B ordinary shares 439,200,000 I By Handsome Reward Limited ( 2 ) Class A ordinary shares ( 1 ) 3,530,768 D Class A ordinary shares ( 1 ) 8,614,416 I By Handsome Reward Limited ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (Right to Buy) $ 21.888 ( 3 ) ( 3 ) 10/27/2026 Class A ordinary shares 724,800 I By Handsome Reward Limited ( 2 ) Stock Option (Right to Buy) $ 23.251 ( 4 ) ( 4 ) 02/22/2027 Class A ordinary shares 469,120 I By Handsome Reward Limited ( 2 ) Restricted Shares ( 5 ) ( 5 ) ( 5 ) Class A ordinary shares 684,200 I By Handsome Reward Limited ( 2 ) Restricted Shares ( 6 ) ( 6 ) ( 6 ) Class A ordinary shares 1,532,432 I By Handsome Reward Limited ( 2 ) Restricted Shares ( 7 ) ( 7 ) ( 7 ) Class A ordinary shares 2,108,824 I By Handsome Reward Limited ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Li Yanhong Robin NO. 10 SHANGDI 10TH STREET BEIJING100085 X X See Remarks Signatures /s/ Yanhong Robin Li 03/18/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Class A ordinary shares are held in the form of American depositary shares. Each American depositary share represents eight Class A ordinary shares. ( 2 )Handsome Reward Limited is a British Virgin Islands company wholly owned by Mr. Robin Yanhong Li. ( 3 )Represents stock options to purchase 724,800 Class A ordinary shares at an exercise price of US$21.888 per Class A ordinary share (equivalent to US$175.1 per ADS). The stock options are fully vested and exercisable as of the date of this form. ( 4 )Represents stock options to purchase 469,120 Class A ordinary shares at an exercise price of US$23.251 per Class A ordinary share (equivalent to US$186.01 per ADS). The stock options are fully vested and exercisable as of the date of this form. ( 5 )The restricted shares vest per annum in two equal installments over a 2-year period, starting from August 9, 2026, subject to the reporting person's continued service through the applicable vesting date. The restricted shares do not have an expiration date. ( 6 )The restricted shares vest per annum in three equal installments over a 3-year period, starting from August 8, 2026, subject to the reporting person's continued service through the applicable vesting date. The restricted shares do not have an expiration date. ( 7 )The restricted shares vest per annum in four equal installments over a 4-year period, starting from August 7, 2026, subject to the reporting person's continued service through the applicable vesting date. The restricted shares do not have an expiration date.

Remarks: Chairman of Board of Directors, Chief Executive Officer *Ms. Melissa Ma, Mr. Robin Yanhong Li's wife, holds shares in her personal capacity 3,465,992 Class A ordinary shares, including in the form of American depositary shares, and 84,720,000 Class B ordinary shares as of the date of this form. Mr. Robin Yanhong Li disclaims beneficial ownership of all of such shares.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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