SEC Form 4
Silvaco Group, Inc. (SVCO) insider trading
In the 12 months to Nov 12, 2026, 7 SVCO insiders reported open-market sales of $5.9M across 14 filings; 4 insiders bought $447.1K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $5.9M
- 14 filings · 7 insiders
- Open-market purchases
- $447.1K
- 11 filings
- Pre-arranged sales (10b5-1)
- 2 of 14
- $9.3K of $5.9M sold (0%)
Who traded SVCO, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
SVCO daily close from Nov 12, 2025 to Nov 11, 2026, between $3.23 and $13.79, last $7.66. 14 sale and 11 purchase filings by 9 insiders, marked at their filing dates. Katherine S. Ngai-Pesic, Director: sold $4.3M and bought $103.3K across 3 filings, first filed Dec 10, 2025, last Jun 11, 2026. Illiya I. Pesic, Other → Director: sold $850.5K across 2 filings, first filed Mar 19, 2026, last Jun 5, 2026. Yelena I. Pesic, Other: sold $597.0K across 1 filing, first filed Mar 19, 2026, last Mar 19, 2026. Walden C. Rhines, Chief Executive Officer: bought $214.6K across 3 filings, first filed Nov 18, 2025, last Dec 9, 2025. Candace Jackson, Officer (see filing): sold $114.1K across 6 filings, first filed Nov 19, 2025, last Aug 26, 2026. Christopher John Zegarelli, Chief Financial Officer: sold $17.0K and bought $57.5K across 3 filings, first filed Nov 18, 2025, last Aug 13, 2026. Anthony K.K. Ngai, Director: bought $71.6K across 5 filings, first filed Nov 20, 2025, last Aug 12, 2026. 2 others: sold $9.3K across 2 filings, first filed Aug 12, 2026, last Aug 12, 2026.
Largest mark · tap a row for others
Katherine S. Ngai-Pesic · Director
Sale $2,254,320
200,000 shares at $11.27 avg
Filed Jun 11, 2026
Close on filing date $11.47
Katherine S. Ngai-Pesic · Director
Director
$4.3M sold$103.3K boughtIlliya I. Pesic · Other → Director
Other → Director
$850.5K soldYelena I. Pesic · Other
Other
$597.0K soldWalden C. Rhines · Chief Executive Officer
Chief Executive Officer
$214.6K boughtCandace Jackson · Officer (see filing)
Officer (see filing)
$114.1K soldChristopher John Zegarelli · Chief Financial Officer
Chief Financial Officer
$17.0K sold$57.5K boughtAnthony K.K. Ngai · Director
Director
$71.6K bought2 others
Combined, one mark per week
$9.3K soldOpen-market trades
25 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Katherine S. Ngai-Pesic | Director | $4.3M | $103.3K | 3 | — | |
| Illiya I. Pesic | Other → Director | $850.5K | — | 2 | — | |
| Yelena I. Pesic | Other | $597.0K | — | 1 | — | |
| Walden C. Rhines | Chief Executive Officer | — | $214.6K | 3 | — | |
| Candace Jackson | Officer (see filing) | $114.1K | — | 6 | — | |
| Christopher John Zegarelli | Chief Financial Officer | $17.0K | $57.5K | 3 | — | |
| Anthony K.K. Ngai | Director | — | $71.6K | 5 | — | |
| Cheemin Bo-Linn | Director | $5.1K | — | 1 | 100% of sales | |
| Ted L. Tewksbury III | Director | $4.2K | — | 1 | 100% of sales |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Candace Jackson Officer (see filing) | Sale | 3,500 | $7.00 | $24.5K | 46,279 | |
traded | Candace Jackson Officer (see filing) | Sale | 1,570 | $7.55 | $11.9K | 49,779 | |
traded | Christopher John Zegarelli Chief Financial Officer | Sale | 2,257 | $7.55 | $17.0K | 540,324 | |
traded | Cheemin Bo-Linn Director | SalePre-arranged (10b5-1) | 700 | $7.28 | $5.1K | 18,264 | |
traded | Ted L. Tewksbury III Director | SalePre-arranged (10b5-1) | 580 | $7.28 | $4.2K | 18,143 | |
traded | Anthony K.K. Ngai Director | Purchase | 750 | $7.37 | $5.5K | 118,972 | |
traded | Anthony K.K. Ngai Director | Purchase | 500 | $12.50 | $6.3K | 115,476 | |
traded | Katherine S. Ngai-Pesic Director | Sale | 200,000 | $11.27 | $2.3M | 9,176,403 | |
traded | Anthony K.K. Ngai Director | Purchase | 1,000 | $13.07 | $13.1K | 114,976 | |
traded | Illiya I. Pesic Director | Sale | 6,000 | $12.96 | $77.7K | 5,394,672 | |
traded | Candace Jackson Officer (see filing) | Sale | 2,000 | $11.00 | $22.0K | 51,349 | |
traded | Candace Jackson Officer (see filing) | Sale | 1,817 | $7.12 | $12.9K | 53,349 | |
traded | Candace Jackson Officer (see filing) | Sale | 1,500 | $5.00 | $7.5K | 55,166 | |
traded | Yelena I. Pesic Other | Sale | 300,000 | $1.99 | $597.0K | 3,603,073 | |
traded | Illiya I. Pesic Other | Sale | 400,000 | $1.93 | $772.8K | 5,379,899 | |
traded | Katherine S. Ngai-Pesic Director | Sale | 950,000 | $2.12 | $2.0M | 9,353,886 | |
traded | Anthony K.K. Ngai Director | Purchase | 1,000 | $4.23 | $4.2K | 91,777 | |
traded | Katherine S. Ngai-Pesic Director | Purchase | 25,000 | $4.13 | $103.3K | 10,303,886 | |
traded | Walden C. Rhines Chief Executive Officer | Purchase | 13,100 | $4.01 | $52.5K | 105,918 | |
traded | Christopher John Zegarelli Chief Financial Officer | Purchase | 10,000 | $3.80 | $38.0K | 439,407 | |
traded | Anthony K.K. Ngai Director | Purchase | 10,000 | $4.26 | $42.6K | 90,777 | |
traded | Walden C. Rhines Chief Executive Officer | Purchase | 29,000 | $4.07 | $118.2K | 92,818 | |
traded | Candace Jackson Officer (see filing) | Sale | 8,300 | $4.25 | $35.3K | 43,069 | |
traded | Walden C. Rhines Chief Executive Officer | Purchase | 11,272 | $3.90 | $44.0K | 63,818 | |
traded | Christopher John Zegarelli Chief Financial Officer | Purchase | 5,000 | $3.91 | $19.6K | 429,407 |
GET /stocks/filings/vX/form-4?tickers=SVCO&filing_date.gte=2025-11-12&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SVCO"
],
"issuer_cik": "0001943289",
"owner_cik": "0002039235",
"accession_number": "0001628280-26-059087",
"form_type": "4",
"filing_date": "2026-08-26",
"period_of_report": "2026-08-25",
"issuer_name": "Silvaco Group, Inc.",
"issuer_trading_symbol": "SVCO",
"owner_name": "Jackson Candace",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "See Remarks",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-25",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 3500,
"transaction_price_per_share": 7,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 46279,
"transaction_value": 24500,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"SVCO"
],
"issuer_cik": "0001943289",
"owner_cik": "0002090610",
"accession_number": "0001628280-26-056869",
"form_type": "4",
"filing_date": "2026-08-13",
"period_of_report": "2026-08-12",
"issuer_name": "Silvaco Group, Inc.",
"issuer_trading_symbol": "SVCO",
"owner_name": "Zegarelli Christopher John",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Financial Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-08-12",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2257,
"transaction_price_per_share": 7.5515,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 540324,
"transaction_value": 17043.7355,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Represents shares of common stock sold by the Reporting Person to satisfy certain tax withholding obligations associated with the vesting of restricted stock units."
},
{
"id": "F2",
"description": "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."
},
{
"id": "F3",
"description": "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)."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 34 records
- Tax withholding1 record
- Tax withholding (sold to cover)1 record
- Grants and awards31 records
- Gifts1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Silvaco Group, Inc.'s CEO sold stock?
No. Walden C. Rhines (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is SVCO’s insider data?
These are SVCO Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track SVCO insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SVCO every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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