Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Silvaco Group, Inc.

SVCO · Nasdaq · CIK 0001943289 · Technology · Software—Application

INSIDER SIGNAL

No active buy signal

3 qualifying P purchase groups
in the current 180-day scoring window

32 Form 4 transaction lines observed in the same window
8 sales · 21 option, withholding, award, gift or other lines

Last qualifying purchase2026-08-11 · Ngai Anthony K.K. · $5.5K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying3 qualifying line group(s)
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Ngai Anthony K.K.Director
○○●●○●
Ngai-Pesic Katherine S.Director,TenPercentOwner
○○▼○
Pesic Illiya I.Director,TenPercentOwner
○○▼○
Jackson CandaceSee Remarks
▼▼▼
Tewksbury Ted L IIIDirector
○○▼
Ganti AnitaDirector
○○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Ngai Anthony K.K. · $24.8K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-06-05–2026-06-16

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-08-11 · Ngai Anthony K.K..

Recent Form 4 activity

11Purchases
16Sales
33Other Form 4 lines
54SEC filings · 365 days
BUYING3 qualifying P line(s) · 180 days
SELLING8 sale line(s) · context only
OTHER21 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
1,455,871
Previous report
1,404,287
Avg daily volume
461,530
Days to cover
3.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-11Ngai Anthony K.K.Purchase (P)Common Stock750USD 7.37USD 5,528SEC filing ↗
2026-06-16Ngai Anthony K.K.Purchase (P)Common Stock500USD 12.50USD 6,250SEC filing ↗
2026-06-05Ngai Anthony K.K.Purchase (P)Common Stock1,000USD 13.07USD 13,070SEC filing ↗
2025-12-11Ngai Anthony K.K.Purchase (P)Common Stock1,000USD 4.23USD 4,230SEC filing ↗
2025-12-10Ngai-Pesic Katherine S.Purchase (P)Common Stock25,000USD 4.13USD 103,250SEC filing ↗
2025-12-09RHINES WALDEN CPurchase (P)Common Stock13,100USD 4.01USD 52,531SEC filing ↗
2025-12-08Zegarelli Christopher JohnPurchase (P)Common Stock10,000USD 3.80USD 38,000SEC filing ↗
2025-11-18Ngai Anthony K.K.Purchase (P)Common Stock10,000USD 4.26USD 42,600SEC filing ↗
2025-11-18RHINES WALDEN CPurchase (P)Common Stock29,000USD 4.07USD 118,030SEC filing ↗
2025-11-17Zegarelli Christopher JohnPurchase (P)Common Stock5,000USD 3.91USD 19,550SEC filing ↗
2025-11-17RHINES WALDEN CPurchase (P)Common Stock11,272USD 3.90USD 43,961SEC filing ↗
2025-09-15Zegarelli Christopher JohnPurchase (P)Common Stock5,100USD 5.03USD 25,653SEC filing ↗
2025-09-11Ngai Anthony K.K.Purchase (P)Common Stock2,000USD 5.16USD 10,320SEC filing ↗
2025-09-10Ngai Anthony K.K.Purchase (P)Common Stock2,700USD 5.32USD 14,354SEC filing ↗
2025-09-09Ngai Anthony K.K.Purchase (P)Common Stock2,000USD 5.32USD 10,640SEC filing ↗

Form 4 evidence

60 transaction lines in the latest 365-day window; 129 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-29RHINES WALDEN CAward / grant (A)Common Stock250,376USD 0.00USD 0SEC filing ↗
2026-08-25Jackson CandaceSale (S)Common Stock3,500USD 7.00USD 24,500SEC filing ↗
2026-08-12Zegarelli Christopher JohnSale (S)Common Stock2,257USD 7.55USD 17,040SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-29RHINES WALDEN CAward / grant (A)Common Stock250,376USD 0.00USD 0SEC filing ↗
2026-08-25Jackson CandaceSale (S)Common Stock3,500USD 7.00USD 24,500SEC filing ↗
2026-08-12Zegarelli Christopher JohnSale (S)Common Stock2,257USD 7.55USD 17,040SEC filing ↗
2026-08-12Jackson CandaceSale (S)Common Stock1,570USD 7.55USD 11,854SEC filing ↗
2026-08-11Tewksbury Ted L IIISale (S)Common Stock580USD 7.28USD 4,222SEC filing ↗
2026-08-11Tewksbury Ted L IIIAward / grant (A)Common Stock1,159USD 0.00USD 0SEC filing ↗
2026-08-11Pesic Illiya I.Award / grant (A)Common Stock1,409USD 0.00USD 0SEC filing ↗
2026-08-11Ngai-Pesic Katherine S.Award / grant (A)Common Stock2,504USD 0.00USD 0SEC filing ↗
2026-08-11Ngai Anthony K.K.Purchase (P)Common Stock750USD 7.37USD 5,528SEC filing ↗
2026-08-11Ngai Anthony K.K.Award / grant (A)Common Stock2,746USD 0.00USD 0SEC filing ↗
2026-08-11Ganti AnitaAward / grant (A)Common Stock1,721USD 0.00USD 0SEC filing ↗
2026-08-11Bo-Linn CheeminSale (S)Common Stock700USD 7.28USD 5,096SEC filing ↗
2026-08-11Bo-Linn CheeminAward / grant (A)Common Stock1,400USD 0.00USD 0SEC filing ↗
2026-06-16Ngai Anthony K.K.Purchase (P)Common Stock500USD 12.50USD 6,250SEC filing ↗
2026-06-11Ngai-Pesic Katherine S.Sale (S)Common Stock200,000USD 11.27USD 2,254,000SEC filing ↗
2026-06-05Ngai Anthony K.K.Purchase (P)Common Stock1,000USD 13.07USD 13,070SEC filing ↗
2026-06-03Pesic Illiya I.Sale (S)Common Stock6,000USD 12.96USD 77,760SEC filing ↗
2026-05-22RHINES WALDEN CAward / grant (A)Common Stock154,745USD 0.00USD 0SEC filing ↗
2026-05-14Jackson CandaceSale (S)Common Stock2,000USD 11.00USD 22,000SEC filing ↗
2026-05-12Pesic Illiya I.Award / grant (A)Common Stock953USD 0.00USD 0SEC filing ↗
2026-05-12Ngai-Pesic Katherine S.Award / grant (A)Common Stock1,694USD 0.00USD 0SEC filing ↗
2026-05-12Ngai Anthony K.K.Award / grant (A)Common Stock1,376USD 0.00USD 0SEC filing ↗
2026-05-12Ganti AnitaAward / grant (A)Common Stock1,165USD 0.00USD 0SEC filing ↗
2026-04-22Tewksbury Ted L IIIAward / grant (A)Common Stock17,564USD 0.00USD 0SEC filing ↗
2026-04-22Shelton Jodi LynnAward / grant (A)Common Stock1,817USD 0.00USD 0SEC filing ↗
2026-04-22Pesic Illiya I.Award / grant (A)Common Stock17,564USD 0.00USD 0SEC filing ↗
2026-04-22Ngai-Pesic Katherine S.Award / grant (A)Common Stock17,564USD 0.00USD 0SEC filing ↗
2026-04-22Ngai Anthony K.K.Award / grant (A)Common Stock17,564USD 0.00USD 0SEC filing ↗
2026-04-22Molloie William H. Jr.Award / grant (A)Common Stock1,999USD 0.00USD 0SEC filing ↗
2026-04-22Lee Hau L.Award / grant (A)Common Stock2,726USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerSVCO
CIK0001943289
SectorTechnology
IndustrySoftware—Application Yahoo Finance
SEC SIC7372 Services-Prepackaged Software
ExchangeNasdaq

Data coverage

Local Form 4 history129 transaction lines from 2024-07-11 to 2026-08-29
20 P purchase lines · 25 S sale lines · 84 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.