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

ONTO INNOVATION INC.

ONTO · NYSE · CIK 0000704532 · Technology · Semiconductor Equipment & Materials

INSIDER SIGNAL

No active buy signal

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

14 Form 4 transaction lines observed in the same window
2 sales · 12 option, withholding, award, gift or other lines

Last qualifying purchase2020-02-28 · Jin Ju · $30.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
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
MILLER DAVID BRIANDirector
○▼
Lynch Susan DDirector
○▼
ROBERTS BRIAN KChief Financial Officer
○○
Su MayDirector
○
SEAMS CHRISTOPHER ADirector
○
SCHWARTZ STEPHEN SDirector
○
● Purchase▼ Sale○ Other

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

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

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: 2020-02-28 · Jin Ju.

Recent Form 4 activity

0Purchases
2Sales
39Other Form 4 lines
26SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING2 sale line(s) · context only
OTHER12 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
2,966,319
Previous report
2,740,793
Avg daily volume
743,949
Days to cover
4.0

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
2020-02-28Jin JuPurchase (P)Common Stock1,000USD 30.00USD 30,000SEC filing ↗

Form 4 evidence

41 transaction lines in the latest 365-day window; 486 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29MILLER DAVID BRIANSale (S)Common Stock2,000USD 300.00USD 600,000SEC filing ↗
2026-09-02ROBERTS BRIAN KTax withholding (F)Common Stock3,239USD 254.55USD 824,487SEC filing ↗
2026-09-02ROBERTS BRIAN KTax withholding (F)Common Stock3,239USD 254.55USD 824,487SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-29MILLER DAVID BRIANSale (S)Common Stock2,000USD 300.00USD 600,000SEC filing ↗
2026-09-02ROBERTS BRIAN KTax withholding (F)Common Stock3,239USD 254.55USD 824,487SEC filing ↗
2026-09-02ROBERTS BRIAN KTax withholding (F)Common Stock3,239USD 254.55USD 824,487SEC filing ↗
2026-09-02Chen ShirleyTax withholding (F)Common Stock1,516USD 254.55USD 385,898SEC filing ↗
2026-08-21Lynch Susan DSale (S)Common Stock1,000USD 302.30USD 302,300SEC filing ↗
2026-05-20Su MayAward / grant (A)Common Stock761USD 0.00USD 0SEC filing ↗
2026-05-20SEAMS CHRISTOPHER AAward / grant (A)Common Stock761USD 0.00USD 0SEC filing ↗
2026-05-20SCHWARTZ STEPHEN SAward / grant (A)Common Stock761USD 0.00USD 0SEC filing ↗
2026-05-20MILLER DAVID BRIANAward / grant (A)Common Stock761USD 0.00USD 0SEC filing ↗
2026-05-20Lynch Susan DAward / grant (A)Common Stock761USD 0.00USD 0SEC filing ↗
2026-05-20Kelley Stephen DouglasAward / grant (A)Common Stock761USD 0.00USD 0SEC filing ↗
2026-05-15YALDAEI RAMILTax withholding (F)Common Stock843USD 271.77USD 229,102SEC filing ↗
2026-05-15OH Yoon AhTax withholding (F)Common Stock530USD 271.77USD 144,038SEC filing ↗
2026-03-03YALDAEI RAMILTax withholding (F)Common Stock615USD 207.50USD 127,612SEC filing ↗
2026-03-03Plisinski Michael PTax withholding (F)Common Stock3,742USD 207.50USD 776,465SEC filing ↗
2026-03-03OH Yoon AhTax withholding (F)Common Stock417USD 207.50USD 86,528SEC filing ↗
2026-03-03Dolev IdoTax withholding (F)Common Stock819USD 207.50USD 169,942SEC filing ↗
2026-03-02YALDAEI RAMILAward / grant (A)Common Stock7,683USD 0.00USD 0SEC filing ↗
2026-03-02ROBERTS BRIAN KAward / grant (A)Common Stock3,096USD 0.00USD 0SEC filing ↗
2026-03-02Plisinski Michael PAward / grant (A)Common Stock14,479USD 0.00USD 0SEC filing ↗
2026-03-02OH Yoon AhAward / grant (A)Common Stock2,408USD 0.00USD 0SEC filing ↗
2026-03-02Dolev IdoAward / grant (A)Common Stock3,440USD 0.00USD 0SEC filing ↗
2026-03-02Chen ShirleyAward / grant (A)Common Stock2,523USD 0.00USD 0SEC filing ↗
2026-03-01YALDAEI RAMILOption exercise / conversion (M)Common Stock649USD 0.00USD 0SEC filing ↗
2026-03-01YALDAEI RAMILTax withholding (F)Common Stock623USD 215.89USD 134,499SEC filing ↗
2026-03-01Plisinski Michael POption exercise / conversion (M)Common Stock4,597USD 0.00USD 0SEC filing ↗
2026-03-01Plisinski Michael PTax withholding (F)Common Stock4,147USD 215.89USD 895,296SEC filing ↗
2026-03-01OH Yoon AhOption exercise / conversion (M)Common Stock724USD 0.00USD 0SEC filing ↗
2026-03-01OH Yoon AhTax withholding (F)Common Stock574USD 215.89USD 123,921SEC filing ↗
2026-02-14Plisinski Michael POption exercise / conversion (M)Common Stock18,445USD 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 · —
TickerONTO
CIK0000704532
SectorTechnology
IndustrySemiconductor Equipment & Materials Yahoo Finance
SEC SIC3829 Measuring & Controlling Devices, NEC
ExchangeNYSE

Data coverage

Local Form 4 history486 transaction lines from 2020-01-02 to 2026-09-29
1 P purchase lines · 137 S sale lines · 348 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.