# 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.

Canonical: https://massive.com/quote/svco/insider-trading
Latest filing: 2026-09-01 (last 12 months; source: SEC EDGAR)
Source: Massive (https://massive.com/docs/llms.txt)

## Summary

| Measure | Value | Detail |
| --- | --- | --- |
| 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%) |

## Open-market trades by insider

| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
| --- | --- | --- | --- | --- | --- | --- |
| Katherine S. Ngai-Pesic | Director | $4.3M | $103.3K | 3 | — | 2026-06-11 |
| Illiya I. Pesic | Other → Director | $850.5K | — | 2 | — | 2026-06-05 |
| Yelena I. Pesic | Other | $597.0K | — | 1 | — | 2026-03-19 |
| Walden C. Rhines | Chief Executive Officer | — | $214.6K | 3 | — | 2025-12-09 |
| Candace Jackson | Officer (see filing) | $114.1K | — | 6 | — | 2026-08-26 |
| Christopher John Zegarelli | Chief Financial Officer | $17.0K | $57.5K | 3 | — | 2026-08-13 |
| Anthony K.K. Ngai | Director | — | $71.6K | 5 | — | 2026-08-12 |
| Cheemin Bo-Linn | Director | $5.1K | — | 1 | 100% of sales | 2026-08-12 |
| Ted L. Tewksbury III | Director | $4.2K | — | 1 | 100% of sales | 2026-08-12 |

## Open-market trades by filing

25 filings in the last 12 months, newest first.

| Filed | Traded | Insider | Role | Type | Shares | Avg price | Value | Held after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-08-26 | 2026-08-25 | Candace Jackson | Officer (see filing) | Sale | 3,500 | $7.00 | $24.5K | 46,279 | — |
| 2026-08-13 | 2026-08-12 | Candace Jackson | Officer (see filing) | Sale | 1,570 | $7.55 | $11.9K | 49,779 | — |
| 2026-08-13 | 2026-08-12 | Christopher John Zegarelli | Chief Financial Officer | Sale | 2,257 | $7.55 | $17.0K | 540,324 | — |
| 2026-08-12 | 2026-08-11 | Cheemin Bo-Linn | Director | Sale (10b5-1) | 700 | $7.28 | $5.1K | 18,264 | — |
| 2026-08-12 | 2026-08-11 | Ted L. Tewksbury III | Director | Sale (10b5-1) | 580 | $7.28 | $4.2K | 18,143 | — |
| 2026-08-12 | 2026-08-11 | Anthony K.K. Ngai | Director | Purchase | 750 | $7.37 | $5.5K | 118,972 | — |
| 2026-06-18 | 2026-06-16 | Anthony K.K. Ngai | Director | Purchase | 500 | $12.50 | $6.3K | 115,476 | — |
| 2026-06-11 | 2026-06-11 | Katherine S. Ngai-Pesic | Director | Sale | 200,000 | $11.27 | $2.3M | 9,176,403 | — |
| 2026-06-08 | 2026-06-05 | Anthony K.K. Ngai | Director | Purchase | 1,000 | $13.07 | $13.1K | 114,976 | — |
| 2026-06-05 | 2026-06-03 | Illiya I. Pesic | Director | Sale | 6,000 | $12.96 | $77.7K | 5,394,672 | — |
| 2026-05-14 | 2026-05-14 | Candace Jackson | Officer (see filing) | Sale | 2,000 | $11.00 | $22.0K | 51,349 | — |
| 2026-04-03 | 2026-04-01 | Candace Jackson | Officer (see filing) | Sale | 1,817 | $7.12 | $12.9K | 53,349 | — |
| 2026-03-19 | 2026-03-17 | Candace Jackson | Officer (see filing) | Sale | 1,500 | $5.00 | $7.5K | 55,166 | — |
| 2026-03-19 | 2025-12-04 | Yelena I. Pesic | Other | Sale | 300,000 | $1.99 | $597.0K | 3,603,073 | — |
| 2026-03-19 | 2025-11-17 | Illiya I. Pesic | Other | Sale | 400,000 | $1.93 | $772.8K | 5,379,899 | — |
| 2026-03-19 | 2025-06-26 | Katherine S. Ngai-Pesic | Director | Sale | 950,000 | $2.12 | $2.0M | 9,353,886 | — |
| 2025-12-15 | 2025-12-11 | Anthony K.K. Ngai | Director | Purchase | 1,000 | $4.23 | $4.2K | 91,777 | — |
| 2025-12-10 | 2025-12-10 | Katherine S. Ngai-Pesic | Director | Purchase | 25,000 | $4.13 | $103.3K | 10,303,886 | — |
| 2025-12-09 | 2025-12-09 | Walden C. Rhines | Chief Executive Officer | Purchase | 13,100 | $4.01 | $52.5K | 105,918 | — |
| 2025-12-08 | 2025-12-08 | Christopher John Zegarelli | Chief Financial Officer | Purchase | 10,000 | $3.80 | $38.0K | 439,407 | — |
| 2025-11-20 | 2025-11-18 | Anthony K.K. Ngai | Director | Purchase | 10,000 | $4.26 | $42.6K | 90,777 | — |
| 2025-11-19 | 2025-11-18 | Walden C. Rhines | Chief Executive Officer | Purchase | 29,000 | $4.07 | $118.2K | 92,818 | — |
| 2025-11-19 | 2025-11-19 | Candace Jackson | Officer (see filing) | Sale | 8,300 | $4.25 | $35.3K | 43,069 | — |
| 2025-11-18 | 2025-11-17 | Walden C. Rhines | Chief Executive Officer | Purchase | 11,272 | $3.90 | $44.0K | 63,818 | — |
| 2025-11-18 | 2025-11-17 | Christopher John Zegarelli | Chief Financial Officer | Purchase | 5,000 | $3.91 | $19.6K | 429,407 | — |

## Other insider activity (not market trades)

- Tax withholding: 1 record
- Tax withholding (sold to cover): 1 record
- Grants and awards: 31 records
- Gifts: 1 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.

## FAQ

### 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.

## Live data

This page joins two Massive endpoints: Form 4 filings and daily prices. The SVCO Form 4 request:

- `GET https://api.massive.com/stocks/filings/vX/form-4?tickers=SVCO&filing_date.gte=2025-11-12&sort=filing_date.desc&limit=500`

Requests need a Massive API key. API reference for agents: https://massive.com/docs/llms.txt. Connect an AI agent through the Massive MCP server: https://massive.com/docs/ai-tools.

## Related

- [Silvaco Group, Inc. (SVCO) stock price](https://massive.com/quote/svco.md)
- [Recent insider trading](https://massive.com/quote/insider-trading.md)
- [Markets overview](https://massive.com/quote/index.md)

Nothing here is investment advice. Data and content are provided for informational purposes under the Massive Terms of Service: https://massive.com/terms