Sec Form 4 Filing - Ngai-Pesic Katherine S. @ Silvaco Group, Inc. - 2025-06-26

FORM 4 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 Ngai-Pesic Katherine S. 2. Issuer Name and Ticker or Trading Symbol Silvaco Group, Inc. [ SVCO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) X __ Other (specify below) Member of 10% owner group (Last) (First) (Middle) C/O SILVACO GROUP, INC., 4701 PATRICK HENRY DRIVE, BUILDING #23 3. Date of Earliest Transaction (MM/DD/YY) 06/26/2025 (Street) SANTA CLARA, CA95054 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 Common Stock 06/26/2025 S 250,000 ( 1 ) D $ 2.154 ( 2 ) 10,053,886 D Common Stock 09/16/2025 S 300,000 ( 1 ) D $ 2.2585 ( 2 ) 9,753,886 D Common Stock 11/25/2025 S 400,000 ( 1 ) D $ 1.9988 ( 2 ) 9,353,886 D Common Stock 03/17/2026 A 3,259 ( 3 ) A $ 0 9,357,145 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 Ngai-Pesic Katherine S. C/O SILVACO GROUP, INC. 4701 PATRICK HENRY DRIVE, BUILDING #23 SANTA CLARA, CA95054 X X Member of 10% owner group Signatures /s/ Candace Jackson, as Attorney-in-Fact 03/19/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The transactions reported in this Form 4 have been reported after the reporting deadlines because the Reporting Person initially believed each of the transactions constituted a non-reportable pledge of Issuer securities. The Reporting Person has subsequently determined to report the transactions based on the terms of the arrangement. The nature of the transactions is currently the subject of a dispute in an arbitral proceeding. Based on the reported transaction prices, the Reporting Person does not believe that any profit would be recoverable from any opposite-way transactions within six months under Section 16(b) of the Exchange Act. ( 2 )The reported price reflects the implied per-share value of shares transferred pursuant to an arrangement described as a non-recourse stock loan, in which the shares were transferred to the counterparty and the loan proceeds were limited to approximately 45% of the market value of the transferred shares, as determined under the terms of the arrangement, rather than a negotiated sale price. ( 3 )The shares of Issuer common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan in lieu of the quarterly cash retainer for the fourth quarter of fiscal 2025, with a fair market value equal to such retainer.

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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