SVCO

SEC source: 0001628280-26-059949 · wk-form4_1788305980.xml · nonDerivative · entry 1

RHINES WALDEN C · CIK 0001221184 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 539,209

F1 · shares: Represents Restricted Stock Units ("RSUs") granted to the Reporting Person pursuant to that certain Employment Agreement, effective as of August 19, 2025 (the "Agreement"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs were granted on August 29, 2026, and will vest on March 31, 2027, provided that the vesting of the RSUs shall be accelerated in the event the Issuer terminates the Reporting Person's employment for any reason or the Reporting Person terminates his employment following a material breach of the Agreement by the Issuer which is not cured within 30 days after the Reporting Person provides written notice, in each case, prior to March 31, 2027.

SEC source: 0001628280-26-059087 · wk-form4_1787775180.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,279

SEC source: 0001628280-26-056869 · wk-form4_1786659046.xml · nonDerivative · entry 1

Zegarelli Christopher John · CIK 0002090610 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 540,324

F1 · shares: Represents shares of common stock sold by the Reporting Person to satisfy certain tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.38 to $7.84, inclusive. The reporting person undertakes to provide to Silvaco Group, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · balance_after: Includes 5,605 shares acquired under the Issuer's employee stock purchase plan on May 29, 2026, in a transaction exempt under Rule 16b-3(c).

SEC source: 0001628280-26-056868 · wk-form4_1786659035.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,779

F1 · shares: Represents shares of common stock sold by the Reporting Person to satisfy certain tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.38 to $7.84, inclusive. The reporting person undertakes to provide to Silvaco Group, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-056349 · wk-form4_1786569078.xml · nonDerivative · entry 2

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,972

SEC source: 0001628280-26-056349 · wk-form4_1786569078.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,222

F1 · shares: The shares of Silvaco Group, Inc. (the "Issuer") common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan providing for the replacement of the quarterly cash retainer earned in the second quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-056350 · wk-form4_1786569085.xml · nonDerivative · entry 1

Ngai-Pesic Katherine S. · CIK 0001992594 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,178,907

F1 · shares: The shares of Silvaco Group, Inc. (the "Issuer") common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan providing for the replacement of the quarterly cash retainer earned in the second quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-056348 · wk-form4_1786569056.xml · nonDerivative · entry 1

Ganti Anita · CIK 0001807940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,534

F1 · shares: The shares of Silvaco Group, Inc. (the "Issuer") common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan providing for the replacement of the quarterly cash retainer earned in the second quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-056346 · wk-form4_1786569047.xml · nonDerivative · entry 2

Tewksbury Ted L III · CIK 0001375681 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,143

F2 · kind: The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on May 12, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.25 to $7.33, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-056346 · wk-form4_1786569047.xml · nonDerivative · entry 1

Tewksbury Ted L III · CIK 0001375681 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,723

F1 · shares: The shares of Silvaco Group, Inc. (the "Issuer") common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan providing for the replacement of the quarterly cash retainer earned in the second quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-056345 · wk-form4_1786569031.xml · nonDerivative · entry 2

Bo-Linn Cheemin · CIK 0001595341 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,264

F2 · kind: The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on May 12, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.25 to $7.33, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-056345 · wk-form4_1786569031.xml · nonDerivative · entry 1

Bo-Linn Cheemin · CIK 0001595341 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,964

F1 · shares: The shares of Silvaco Group, Inc. (the "Issuer") common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan providing for the replacement of the quarterly cash retainer earned in the second quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-056344 · wk-form4_1786569017.xml · nonDerivative · entry 1

Pesic Illiya I. · CIK 0001993374 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,396,081

F1 · shares: The shares of Silvaco Group, Inc. (the "Issuer") common stock were awarded to the Reporting Person pursuant to an amendment to the Issuer's non-employee director compensation plan providing for the replacement of the quarterly cash retainer earned in the second quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-044308 · wk-form4_1781813805.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,476

SEC source: 0001628280-26-042621 · wk-form4_1781223360.xml · nonDerivative · entry 1

Ngai-Pesic Katherine S. · CIK 0001992594 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,176,403

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.02 to $11.615, inclusive. The reporting person undertakes to provide to Silvaco Group, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-041741 · wk-form4_1780960665.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,976

SEC source: 0001628280-26-041350 · wk-form4_1780702023.xml · nonDerivative · entry 1

Pesic Illiya I. · CIK 0001993374 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,394,672

SEC source: 0001628280-26-038549 · wk-form4_1779918073.xml · nonDerivative · entry 1

RHINES WALDEN C · CIK 0001221184 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 288,833

F1 · shares: Represents Restricted Stock Units ("RSUs") granted to the Reporting Person pursuant to that certain Employment Agreement, effective as of August 19, 2025 (the "Agreement"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs were granted on May 22, 2026, and will vest on March 31, 2027, provided that the vesting of the RSUs shall be accelerated in the event the Issuer terminates the Reporting Person's employment for any reason or the Reporting Person terminates his employment following a material breach of the Agreement by the Issuer which is not cured within 30 days after the Reporting Person provides written notice, in each case, prior to March 31, 2027.

SEC source: 0001628280-26-035276 · wk-form4_1778801514.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,349

SEC source: 0001628280-26-034674 · wk-form4_1778706277.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,976

F1 · shares: 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 providing for the replacement of the quarterly cash retainer earned in the first quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-034676 · wk-form4_1778706313.xml · nonDerivative · entry 1

Pesic Illiya I. · CIK 0001993374 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,400,672

F1 · shares: 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 providing for the replacement of the quarterly cash retainer earned in the first quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-034675 · wk-form4_1778706298.xml · nonDerivative · entry 1

Ganti Anita · CIK 0001807940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,813

F1 · shares: 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 providing for the replacement of the quarterly cash retainer earned in the first quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

F2 · balance_after: The amount of securities reported in Column 5 of the Reporting Person's Form 4 filed on May 22, 2025 erroneously excluded 7,858 restricted stock units awarded to the Reporting Person and reported on the Form 4 filed by the Reporting Person on July 11, 2024.

SEC source: 0001628280-26-034672 · wk-form4_1778706254.xml · nonDerivative · entry 1

Ngai-Pesic Katherine S. · CIK 0001992594 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,376,403

F1 · shares: 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 providing for the replacement of the quarterly cash retainer earned in the first quarter of fiscal 2026 with an award of Issuer common stock with a fair market value equal to such quarterly cash retainer.

SEC source: 0001628280-26-027590 · wk-form4_1777323481.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,600

F1 · shares: The restricted stock units shall fully vest on the earlier of the one-year anniversary of the grant date or the Issuer's 2027 annual meeting of stockholders.

SEC source: 0001628280-26-027614 · wk-form4_1777323938.xml · nonDerivative · entry 1

Bo-Linn Cheemin · CIK 0001595341 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,564

F1 · shares: The restricted stock units shall fully vest on the earlier of the one-year anniversary of the grant date or the Issuer's 2027 annual meeting of stockholders.

SEC source: 0001628280-26-027608 · wk-form4_1777323758.xml · nonDerivative · entry 1

Shelton Jodi Lynn · CIK 0001893241 · Former Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,574

F1 · shares: 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 providing for the replacement of the quarterly cash retainers earned in the first quarter of fiscal 2026 and the second quarter of 2026 to date with an award of Issuer common stock with a fair market value equal to such quarterly cash retainers.

SEC source: 0001628280-26-027606 · wk-form4_1777323729.xml · nonDerivative · entry 1

Lee Hau L. · CIK 0001543682 · Former Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,174

F1 · shares: 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 providing for the replacement of the quarterly cash retainers earned in the first quarter of fiscal 2026 and the second quarter of 2026 to date with an award of Issuer common stock with a fair market value equal to such quarterly cash retainers.

SEC source: 0001628280-26-027599 · wk-form4_1777323644.xml · nonDerivative · entry 1

Molloie William H. Jr. · CIK 0001992496 · Former Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,006

F1 · shares: 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 providing for the replacement of the quarterly cash retainers earned in the first quarter of fiscal 2026 and the second quarter of 2026 to date with an award of Issuer common stock with a fair market value equal to such quarterly cash retainers.

SEC source: 0001628280-26-027593 · wk-form4_1777323559.xml · nonDerivative · entry 1

Ngai-Pesic Katherine S. · CIK 0001992594 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,374,709

F1 · shares: The restricted stock units shall fully vest on the earlier of the one-year anniversary of the grant date or the Issuer's 2027 annual meeting of stockholders.

SEC source: 0001628280-26-027592 · wk-form4_1777323516.xml · nonDerivative · entry 1

Ganti Anita · CIK 0001807940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,790

F1 · shares: The restricted stock units shall fully vest on the earlier of the one-year anniversary of the grant date or the Issuer's 2027 annual meeting of stockholders.

SEC source: 0001628280-26-027589 · wk-form4_1777323447.xml · nonDerivative · entry 1

Pesic Illiya I. · CIK 0001993374 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,399,719

F1 · shares: The restricted stock units shall fully vest on the earlier of the one-year anniversary of the grant date or the Issuer's 2027 annual meeting of stockholders.

SEC source: 0001628280-26-027588 · wk-form4_1777323318.xml · nonDerivative · entry 1

Tewksbury Ted L III · CIK 0001375681 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,564

F1 · shares: The restricted stock units shall fully vest on the earlier of the one-year anniversary of the grant date or the Issuer's 2027 annual meeting of stockholders.

SEC source: 0001628280-26-023723 · wk-form4_1775250806.xml · nonDerivative · entry 1

Zegarelli Christopher John · CIK 0002090610 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 536,976

F1 · shares: In connection with the vesting of restricted stock units, the Reporting Person inadvertently sold shares to cover tax withholding obligations in a transaction that is matchable under Section 16(b) of the Securities Exchange Act of 1934 with 2,431 shares of common stock purchased by the reporting person at a price of $3.78 per share on December 8, 2025. The Reporting Person will promptly pay the Issuer $8,088.63, representing the full amount of the profit realized in connection with the short-swing transaction.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.03 to $7.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-023722 · wk-form4_1775250796.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,349

F1 · shares: Represents shares of common stock sold to satisfy certain tax withholding obligations associated with the vesting of restricted stock units. The sale was not at the discretion of the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.02 to $7.1724, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-019941 · wk-form4_1773962998.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,166

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.00 to $5.04, inclusive. The reporting person undertakes to provide to Silvaco Group, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-26-019936 · wk-form4_1773962899.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,036

F1 · shares: 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.

SEC source: 0001628280-26-019944 · wk-form4_1773963057.xml · nonDerivative · entry 4

Ngai-Pesic Katherine S. · CIK 0001992594 · Director · 10% owner · Member of 10% owner group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,357,145

F3 · shares: 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.

SEC source: 0001628280-26-019943 · wk-form4_1773963043.xml · nonDerivative · entry 3

Pesic Illiya I. · CIK 0001993374 · Member of 10% owner group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,382,155

F3 · shares: 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.

SEC source: 0001628280-26-019940 · wk-form4_1773962961.xml · nonDerivative · entry 1

Shelton Jodi Lynn · CIK 0001893241 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,757

F1 · shares: 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.

SEC source: 0001628280-26-019939 · wk-form4_1773962948.xml · nonDerivative · entry 1

Molloie William H. Jr. · CIK 0001992496 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,007

F1 · shares: 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.

SEC source: 0001628280-26-019938 · wk-form4_1773962933.xml · nonDerivative · entry 1

Ganti Anita · CIK 0001807940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,226

F1 · shares: 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.

SEC source: 0001628280-26-019937 · wk-form4_1773962919.xml · nonDerivative · entry 1

Lee Hau L. · CIK 0001543682 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,448

F1 · shares: 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.

SEC source: 0001628280-26-013255 · wk-form4_1772487184.xml · nonDerivative · entry 1

Zegarelli Christopher John · CIK 0002090610 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 539,407

F1 · shares: Represents Restricted Stock Units ("RSUs") granted to the Reporting Person. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs were granted on March 2, 2026, with a vesting commencement date of January 1, 2026. One-sixteenth of the RSUs vest each quarter until fully vested on January 1, 2030.

SEC source: 0001628280-26-013257 · wk-form4_1772487214.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,666

F1 · shares: Represents Restricted Stock Units ("RSUs") granted to the Reporting Person. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs were granted on March 2, 2026, with a vesting commencement date of January 1, 2026. One-sixteenth of the RSUs vest each quarter until fully vested on January 1, 2030.

SEC source: 0001628280-26-013263 · wk-form4_1772487240.xml · nonDerivative · entry 1

RHINES WALDEN C · CIK 0001221184 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,088

F1 · shares: Represents Restricted Stock Units ("RSUs") granted to the Reporting Person pursuant to that certain Employment Agreement, effective as of August 19, 2025 (the "Agreement"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs were granted on February 21, 2026, and will vest on March 31, 2027, provided that the vesting of the RSUs shall be accelerated in the event the Issuer terminates the Reporting Person's employment for any reason or the Reporting Person terminates his employment following a material breach of the Agreement by the Issuer which is not cured within 30 days after the Reporting Person provides written notice, in each case, prior to March 31, 2027.

SEC source: 0001628280-26-019943 · wk-form4_1773963043.xml · nonDerivative · entry 2

Pesic Illiya I. · CIK 0001993374 · Member of 10% owner group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,379,899

F1 · shares: 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.

F2 · price: 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.

SEC source: 0001628280-26-000502 · wk-form4_1767649307.xml · nonDerivative · entry 1

Jackson Candace · CIK 0002039235 · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,666

F1 · shares: Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations associated with the vesting of restricted stock units.

SEC source: 0001628280-25-057132 · wk-form4_1765837317.xml · nonDerivative · entry 1

Ngai Anthony K.K. · CIK 0001992498 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,777

SEC source: 0001628280-25-056375 · wk-form4_1765406317.xml · nonDerivative · entry 1

Ngai-Pesic Katherine S. · CIK 0001992594 · Director · 10% owner · Member of 10% owner group

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,303,886

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.04 to $4.20, inclusive. The reporting person undertakes to provide to Silvaco Group, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001628280-25-056129 · wk-form4_1765316640.xml · nonDerivative · entry 1

RHINES WALDEN C · CIK 0001221184 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,918

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.00 to $4.05, inclusive. The reporting person undertakes to provide to Silvaco Group, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.