Silvaco Group (SVCO) director reports stock award and 580-share sale under 10b5-1 plan

Rhea-AI Filing Summary

Silvaco Group, Inc. director Ted L. Tewksbury III reported a mix of equity compensation and sales. On August 11, 2026, he received 1,159 shares of common stock as a stock award in lieu of his second-quarter 2026 non-employee director cash retainer. On the same date, he sold 580 shares of common stock at a weighted average price of $7.2755 per share, in transactions executed between $7.25 and $7.33, under a pre-arranged Rule 10b5-1 trading plan adopted on May 12, 2026.

Insider Trade Summary 10b5-1

Net Buyer: 579 shares

Net Buy 2 txns

Insider Tewksbury Ted L III

Role Director

Sold 580 shs ($4K)

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	1,159	$0.00	$0.00
Sale	Common Stock F2, F3	580	$7.2755	$4K

Holdings After Transaction: Common Stock — 18,143 shares (Direct)

Footnotes (3)

1. F1. 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.
2. F2. 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.
3. F3. 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.

Key Figures

Shares awarded: 1,159 shares of Common Stock Shares sold: 580 shares of Common Stock Weighted average sale price: $7.2755 per share +1 more

4 metrics

Shares awarded 1,159 shares of Common Stock Stock award replacing second-quarter 2026 non-employee director cash retainer

Shares sold 580 shares of Common Stock Open-market or private sale on August 11, 2026

Weighted average sale price $7.2755 per share 580 shares sold at prices ranging from $7.25 to $7.33

10b5-1 plan adoption date May 12, 2026 Date the Rule 10b5-1 trading plan governing the reported sale was adopted

Key Terms

Rule 10b5-1 trading plan, weighted average price, non-employee director compensation plan

3 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

non-employee director compensation plan financial

"pursuant to an amendment to the Issuer's non-employee director compensation plan"

FAQ

What did SVCO director Ted L. Tewksbury III report on this Form 4?

He reported a stock award of 1,159 SVCO shares in lieu of a cash retainer and a sale of 580 shares on August 11, 2026, under a pre-arranged Rule 10b5-1 trading plan.

How many Silvaco Group (SVCO) shares were awarded to the director?

Ted L. Tewksbury III was awarded 1,159 shares of SVCO common stock. The award replaced his second-quarter 2026 non-employee director cash retainer with shares having an equivalent fair market value.

How many Silvaco Group (SVCO) shares did the director sell and at what price?

He sold 580 shares of SVCO common stock at a weighted average price of $7.2755 per share, with individual trade prices ranging from $7.25 to $7.33 on August 11, 2026.

Was the SVCO share sale by Ted L. Tewksbury III under a Rule 10b5-1 plan?

Yes. The 580-share sale was effected under a Rule 10b5-1 trading plan adopted by Ted L. Tewksbury III on May 12, 2026, indicating the trades were pre-arranged.

Why did the SVCO director receive 1,159 shares instead of cash?

The 1,159-share award was granted under an amended non-employee director compensation plan, replacing the second-quarter 2026 cash retainer with Silvaco Group common stock of equivalent fair market value.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/12/2026 - 05:11 PM Accepted by SEC EDGAR 08/12/2026 - 05:10 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Tewksbury Ted L III

(Last) (First) (Middle)

C/O SILVACO GROUP, INC.

4701 PATRICK HENRY DR., BLDG. #23

(Street)

SANTA CLARA CALIFORNIA 95054

(City) (State) (Zip)

UNITED STATES

(Country)

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		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	08/11/2026		A		1,159(1)	A	$0	18,723	D
Common Stock	08/11/2026		S(2)		580	D	$7.2755(3)	18,143	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. 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.

2. 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.

3. 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.

Remarks:

	/s/ Candace Jackson, as Attorney-in-Fact	08/12/2026
	** Signature of Reporting Person	Date
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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)