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

ON SEMICONDUCTOR CORP

ON · Nasdaq · CIK 0001097864 · Technology · Semiconductors

INSIDER SIGNAL

No active buy signal

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

12 Form 4 transaction lines observed in the same window
3 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchase2021-09-07 · WATERS GREGORY L · $769.4K

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
MASCARENAS PAUL ANTHONYDirector
○○○
GOPALSWAMY SUDHIRGroup President, AMG & ISG
○▼
Thad TrentExec VP & CFO
▼▼
Deitrich ThomasDirector
○
WATERS GREGORY LDirector
○
CARTER SUSAN KDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 2 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: 2021-09-07 · WATERS GREGORY L.

Recent Form 4 activity

0Purchases
15Sales
44Other Form 4 lines
31SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER9 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
30,002,949
Previous report
29,554,283
Avg daily volume
12,273,941
Days to cover
2.4

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
2021-09-07WATERS GREGORY LPurchase (P)Common17,000USD 45.26USD 769,420SEC filing ↗

Form 4 evidence

59 transaction lines in the latest 365-day window; 522 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02MASCARENAS PAUL ANTHONYAward / grant (A)Common126USD 84.89USD 10,696SEC filing ↗
2026-10-01GOPALSWAMY SUDHIRSale (S)Common15,578USD 80.00USD 1,246,240SEC filing ↗
2026-07-02MASCARENAS PAUL ANTHONYAward / grant (A)Common116USD 91.22USD 10,582SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-02MASCARENAS PAUL ANTHONYAward / grant (A)Common126USD 84.89USD 10,696SEC filing ↗
2026-10-01GOPALSWAMY SUDHIRSale (S)Common15,578USD 80.00USD 1,246,240SEC filing ↗
2026-07-02MASCARENAS PAUL ANTHONYAward / grant (A)Common116USD 91.22USD 10,582SEC filing ↗
2026-05-26GOPALSWAMY SUDHIRTax withholding (F)Common470USD 127.00USD 59,690SEC filing ↗
2026-05-14Yan Christine YAward / grant (A)Common1,986USD 0.00USD 0SEC filing ↗
2026-05-14WATERS GREGORY LAward / grant (A)Common1,986USD 0.00USD 0SEC filing ↗
2026-05-14MASCARENAS PAUL ANTHONYAward / grant (A)Common1,986USD 0.00USD 0SEC filing ↗
2026-05-14KIDDOO BRUCE EAward / grant (A)Common1,986USD 0.00USD 0SEC filing ↗
2026-05-14Deitrich ThomasAward / grant (A)Common1,986USD 0.00USD 0SEC filing ↗
2026-05-14CARTER SUSAN KAward / grant (A)Common1,986USD 0.00USD 0SEC filing ↗
2026-04-24Thad TrentSale (S)Common30,000USD 100.00USD 3,000,000SEC filing ↗
2026-04-23Thad TrentSale (S)Common30,000USD 93.00USD 2,790,000SEC filing ↗
2026-04-16Thad TrentSale (S)Common30,000USD 80.00USD 2,400,000SEC filing ↗
2026-04-03MASCARENAS PAUL ANTHONYAward / grant (A)Common168USD 62.19USD 10,448SEC filing ↗
2026-03-13GOPALSWAMY SUDHIRSale (S)Common6,114USD 58.67USD 358,708SEC filing ↗
2026-02-21Thad TrentTax withholding (F)Common10,383USD 69.11USD 717,569SEC filing ↗
2026-02-21KEETON SIMONTax withholding (F)Common7,788USD 69.11USD 538,229SEC filing ↗
2026-02-21GOPALSWAMY SUDHIRTax withholding (F)Common9,583USD 69.11USD 662,281SEC filing ↗
2026-02-21El-Khoury HassaneTax withholding (F)Common36,802USD 69.11USD 2,543,386SEC filing ↗
2026-02-20Thad TrentTax withholding (F)Common4,173USD 69.11USD 288,396SEC filing ↗
2026-02-20Thad TrentAward / grant (A)Common36,175USD 0.00USD 0SEC filing ↗
2026-02-20KEETON SIMONTax withholding (F)Common3,130USD 69.11USD 216,314SEC filing ↗
2026-02-20KEETON SIMONAward / grant (A)Common26,046USD 0.00USD 0SEC filing ↗
2026-02-20GOPALSWAMY SUDHIRTax withholding (F)Common1,455USD 69.11USD 100,555SEC filing ↗
2026-02-20GOPALSWAMY SUDHIRAward / grant (A)Common31,834USD 0.00USD 0SEC filing ↗
2026-02-20El-Khoury HassaneAward / grant (A)Common75,315USD 0.00USD 0SEC filing ↗
2026-02-17KEETON SIMONSale (S)Common48,860USD 71.75USD 3,505,717SEC filing ↗
2026-02-12KIDDOO BRUCE EGift (G)Common3,570USD 0.00USD 0SEC filing ↗
2026-02-12Thad TrentSale (S)Common60,000USD 71.21USD 4,272,893SEC filing ↗
2026-02-12El-Khoury HassaneSale (S)Common20,000USD 73.02USD 1,460,454SEC 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 · —
TickerON
CIK0001097864
SectorTechnology
IndustrySemiconductors Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNasdaq

Data coverage

Local Form 4 history522 transaction lines from 2020-01-02 to 2026-10-02
1 P purchase lines · 113 S sale lines · 408 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.