Sec Form 3/A Filing - Tuszik Oliver @ CISCO SYSTEMS, INC. - 2025-04-27

FORM 3/A 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 Tuszik Oliver 2. Issuer Name and Ticker or Trading Symbol CISCO SYSTEMS, INC. [ CSCO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP, Global Sales (Last) (First) (Middle) 170 WEST TASMAN DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 04/27/2025 (Street) SAN JOSE, CA95134 4. If Amendment, Date Original Filed (MM/DD/YY) 05/06/2025 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 Common Stock 157,895 ( 1 ) ( 2 ) ( 3 ) ( 4 ) 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Tuszik Oliver 170 WEST TASMAN DRIVE SAN JOSE, CA95134 EVP, Global Sales Signatures /s/ Oliver Tuszik by Jay Higdon, Attorney-in-Fact 05/23/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes: (i) the 3,201 remaining unvested shares of a restricted stock unit award originally granted with respect to 17,071 shares of common stock on September 20, 2021, which award vests in installments, with twenty five percent (25%) of the shares vesting on November 10, 2022 and six-and-one-quarter percent (6.25%) of the shares vesting quarterly thereafter; (ii) the 4,572 remaining unvested shares of a restricted stock unit award originally granted with respect to 18,288 shares of common stock on February 8, 2022, which award vests in installments, with twenty five percent (25%) of the shares vesting on February 10, 2023 and six-and-one-quarter percent (6.25%) of the shares vesting quarterly thereafter; (Continued on Footnotes 2 and 3) ( 2 )(Continued from Footnote 1) (iii) the 10,241 remaining unvested shares of a restricted stock unit award originally granted with respect to 41,377 shares of common stock on October 11, 2022, which award vests in installments, with thirty four percent (34%) of the shares vesting on November 10, 2023 and eight-and-one-quarter percent (8.25%) of the shares vesting quarterly thereafter; (iv) the 17,648 remaining unvested shares of a restricted stock unit award originally granted with respect to 30,559 shares of common stock on September 21, 2023, which award vests in installments, with thirty four percent (34%) of the shares vesting on November 10, 2024 and eight-and-one-quarter percent (8.25%) of the shares vesting quarterly thereafter; (Continued on Footnote 3) ( 3 )(Continued from Footnotes 1 and 2) (v) the 26,307 remaining unvested shares of a restricted stock unit award originally granted with respect to 53,145 shares of common stock on September 21, 2023, which award vests in installments, with thirty four percent (34%) of the shares vesting on October 10, 2024, and eight-and-one-quarter percent (8.25%) of the shares vesting quarterly thereafter; and (vi) a restricted stock unit award with respect to 31,200 shares of common stock, which award was granted on November 5, 2024 and which vests in installments, with thirty four percent (34%) of the shares vesting on November 10, 2025 and eight-and-one-quarter percent (8.25%) of the shares vesting quarterly thereafter. ( 4 )Also includes the 23,133 unvested or unsettled shares of a restricted stock unit award originally granted with respect to 23,133 shares of common stock on July 27, 2022, which award vests in installments, with twenty five percent (25%) of the shares vesting on August 10, 2023 and six-and-one-quarter percent (6.25%) of the shares vesting quarterly thereafter.

Remarks: This amendment is being filed solely to include restricted stock units granted July 27, 2022, which were omitted from the original filing on May 6, 2025 due to a technical system error impacting the Issuer's record of this grant.

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).

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