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

LITTELFUSE INC /DE

LFUS · Nasdaq · CIK 0000889331 · Industrials · Electronic Components

INSIDER SIGNAL

No active buy signal

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

119 Form 4 transaction lines observed in the same window
21 sales · 98 option, withholding, award, gift or other lines

Last qualifying purchase2025-02-06 · GRILLO ANTHONY · $4.1M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
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
HUNTER GORDONDirector
○○▼○
Gorski Jeffrey GSVP & Chief Accounting Officer
○○▼○
Ruppel DavidSVP & GM Transportation Bus.
○○○
PAEPER HOLLY BethDirector
○○○
Khandelwal AbhishekExecutive VP, CFO
○○○
GRILLO ANTHONYDirector
○▼○
● Purchase▼ Sale○ Other

Showing the six most active owners; 11 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: 2025-02-06 · GRILLO ANTHONY.

Recent Form 4 activity

0Purchases
56Sales
158Other Form 4 lines
118SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING21 sale line(s) · context only
OTHER98 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
1,320,996
Previous report
1,237,900
Avg daily volume
200,498
Days to cover
6.6

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
2025-02-06GRILLO ANTHONYPurchase (P)Common Stock17,500USD 233.98USD 4,094,575SEC filing ↗
2020-06-08GRILLO ANTHONYPurchase (P)Common Stock73USD 180.13USD 13,149SEC filing ↗

Form 4 evidence

214 transaction lines in the latest 365-day window; 1,044 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-03Ruppel DavidAward / grant (A)Common Stock5USD 414.24USD 2,071SEC filing ↗
2026-09-03PAEPER HOLLY BethAward / grant (A)Common Stock1USD 414.24USD 414SEC filing ↗
2026-09-03Nayar DeepakAward / grant (A)Common Stock8USD 414.24USD 3,314SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-03Ruppel DavidAward / grant (A)Common Stock5USD 414.24USD 2,071SEC filing ↗
2026-09-03PAEPER HOLLY BethAward / grant (A)Common Stock1USD 414.24USD 414SEC filing ↗
2026-09-03Nayar DeepakAward / grant (A)Common Stock8USD 414.24USD 3,314SEC filing ↗
2026-09-03NOGLOWS WILLIAM PAward / grant (A)Common Stock7USD 414.24USD 2,900SEC filing ↗
2026-09-03Kim Peter Sung-JipAward / grant (A)Common Stock5USD 414.24USD 2,071SEC filing ↗
2026-09-03Khandelwal AbhishekAward / grant (A)Common Stock15USD 414.24USD 6,214SEC filing ↗
2026-09-03Kelsey Todd P.Award / grant (A)Common Stock1USD 414.24USD 414SEC filing ↗
2026-09-03Henderson Gregory N.Award / grant (A)Common Stock30USD 414.24USD 12,427SEC filing ↗
2026-09-03Hamed Karim WagdyAward / grant (A)Common Stock5USD 414.24USD 2,071SEC filing ↗
2026-09-03HUNTER GORDONAward / grant (A)Common Stock8USD 414.24USD 3,314SEC filing ↗
2026-09-03Gorski Jeffrey GAward / grant (A)Common Stock1USD 414.24USD 414SEC filing ↗
2026-09-03GRILLO ANTHONYAward / grant (A)Common Stock61USD 414.24USD 25,269SEC filing ↗
2026-09-03GREEN MARIA CAward / grant (A)Common Stock3USD 414.24USD 1,243SEC filing ↗
2026-09-03D'Angelo Anne-Marie WAward / grant (A)Common Stock3USD 414.24USD 1,243SEC filing ↗
2026-09-03Chu MaggieAward / grant (A)Common Stock5USD 414.24USD 2,071SEC filing ↗
2026-09-03Cerniglia Kristina A.Award / grant (A)Common Stock1USD 414.24USD 414SEC filing ↗
2026-09-03CHUNG T JAward / grant (A)Common Stock18USD 414.24USD 7,456SEC filing ↗
2026-08-14Ruppel DavidTax withholding (F)Common Stock168USD 457.57USD 76,872SEC filing ↗
2026-08-11Hamed Karim WagdyTax withholding (F)Common Stock141USD 453.87USD 63,996SEC filing ↗
2026-08-06Kelsey Todd P.Award / grant (A)Common Stock294USD 0.00USD 0SEC filing ↗
2026-07-30PAEPER HOLLY BethAward / grant (A)Common Stock56USD 442.00USD 24,752SEC filing ↗
2026-06-18Khandelwal AbhishekTax withholding (F)Common Stock1,122USD 479.82USD 538,358SEC filing ↗
2026-06-18Gorski Jeffrey GSale (S)Common Stock1,389USD 482.48USD 670,163SEC filing ↗
2026-06-18Gorski Jeffrey GOption exercise / conversion (M)Common Stock689USD 166.63USD 114,808SEC filing ↗
2026-06-15HUNTER GORDONSale (S)Common Stock1,432USD 480.00USD 687,360SEC filing ↗
2026-06-15HUNTER GORDONOption exercise / conversion (M)Common Stock1,432USD 132.08USD 189,139SEC filing ↗
2026-06-11GRILLO ANTHONYSale (S)Common Stock3,000USD 451.96USD 1,355,867SEC filing ↗
2026-06-04Ruppel DavidAward / grant (A)Common Stock5USD 480.24USD 2,401SEC filing ↗
2026-06-04PAEPER HOLLY BethAward / grant (A)Common Stock1USD 480.24USD 480SEC filing ↗
2026-06-04Nayar DeepakAward / grant (A)Common Stock9USD 480.24USD 4,322SEC 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 · —
TickerLFUS
CIK0000889331
SectorIndustrials
IndustryElectronic Components Yahoo Finance
SEC SIC3613 Switchgear & Switchboard Apparatus
ExchangeNasdaq

Data coverage

Local Form 4 history1,044 transaction lines from 2020-01-03 to 2026-09-03
5 P purchase lines · 371 S sale lines · 668 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.