Sec Form 3 Filing - Vaidyanathan Srinivasan @ HDFC BANK LTD - 2026-03-17

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 Vaidyanathan Srinivasan 2. Issuer Name and Ticker or Trading Symbol HDFC BANK LTD [ HDB] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Group Head - Finance (Last) (First) (Middle) HDFC BANK LIMITED, HDFC BANK HOUSE, SENAPATI BAPAT MARG, LOWER PAREL 3. Date of Earliest Transaction (MM/DD/YY) 03/17/2026 (Street) MUMBAI, K7400013 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 Equity Shares 192 D

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 Employee Stock Option (Right to Buy) $ 7.85 ( 1 ) 09/26/2026 09/26/2030 Equity Shares 44,600 D Employee Stock Option (Right to Buy) $ 9 ( 1 ) 09/13/2024 09/13/2028 Equity Shares 40,400 D Employee Stock Option (Right to Buy) $ 9 ( 1 ) 09/13/2025 09/13/2029 Equity Shares 40,400 D Employee Stock Option (Right to Buy) $ 9 ( 1 ) 09/13/2026 09/13/2030 Equity Shares 40,400 D Employee Stock Option (Right to Buy) $ 9 ( 1 ) 09/13/2027 09/13/2031 Equity Shares 40,240 D Employee Stock Option (Right to Buy) $ 9.54 ( 1 ) 10/29/2025 10/29/2029 Equity Shares 29,800 D Employee Stock Option (Right to Buy) $ 9.54 ( 1 ) 10/29/2026 10/29/2030 Equity Shares 29,800 D Employee Stock Option (Right to Buy) $ 9.54 ( 1 ) 10/29/2027 10/29/2031 Equity Shares 29,800 D Employee Stock Option (Right to Buy) $ 9.54 ( 1 ) 10/29/2028 10/29/2032 Equity Shares 29,480 D Employee Stock Option (Right to Buy) $ 10.63 ( 1 ) 09/18/2026 09/18/2030 Equity Shares 16,700 D Employee Stock Option (Right to Buy) $ 10.63 ( 1 ) 09/18/2027 09/18/2031 Equity Shares 22,200 D Employee Stock Option (Right to Buy) $ 10.63 ( 1 ) 09/18/2028 09/18/2032 Equity Shares 27,800 D Employee Stock Option (Right to Buy) $ 10.63 ( 1 ) 09/18/2029 09/18/2033 Equity Shares 44,440 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Vaidyanathan Srinivasan HDFC BANK LIMITED, HDFC BANK HOUSE SENAPATI BAPAT MARG, LOWER PAREL MUMBAI, K7400013 Group Head - Finance Signatures /s/ Dhanjit Thaivalappil, Attorney in fact for Vaidyanathan Srinivasan 03/17/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Conversion rate as on March 16, 2026 applied : 1Rs = 0.011 USD

Remarks: Exhibit 24 - Power of Attorney Group Head - Finance

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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