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

PLEXUS CORP

PLXS · Nasdaq · CIK 0000785786 · Technology · Electronic Components

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2021-08-18 · Quadracci J Joel · $250.0K

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
Kelsey Todd P.President & CEO
▼▼▼▼▼▼▼▼▼▼
Rapp Karen MarieDirector
▼▼
Ninivaggi Angelo Michael JrEVP, Chief Legal & PAO & Secy
▼▼
Abuhl David WestenSr. VP & CFO
○○
Running Michael J.Regional President - AMER
▼
Tan Victor (Pang Hau)Regional President - APAC
▼
● 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: 2021-08-18 · Quadracci J Joel.

Recent Form 4 activity

0Purchases
65Sales
51Other Form 4 lines
64SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING31 sale line(s) · context only
OTHER3 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
921,426
Previous report
875,856
Avg daily volume
236,526
Days to cover
3.9

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
2021-08-18Quadracci J JoelPurchase (P)Common Stock, $.01 par value2,840USD 88.02USD 249,982SEC filing ↗

Form 4 evidence

116 transaction lines in the latest 365-day window; 790 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-16Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 242.41USD 363,615SEC filing ↗
2026-09-15Abuhl David WestenOption exercise / conversion (M)Common Stock, $.01 par value2,500USD —USD —SEC filing ↗
2026-09-15Abuhl David WestenTax withholding (F)Common Stock, $.01 par value800USD 238.53USD 190,824SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-16Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 242.41USD 363,615SEC filing ↗
2026-09-15Abuhl David WestenOption exercise / conversion (M)Common Stock, $.01 par value2,500USD —USD —SEC filing ↗
2026-09-15Abuhl David WestenTax withholding (F)Common Stock, $.01 par value800USD 238.53USD 190,824SEC filing ↗
2026-08-31Rapp Karen MarieSale (S)Common Stock, $.01 par value500USD 240.87USD 120,435SEC filing ↗
2026-08-19Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 250.98USD 376,471SEC filing ↗
2026-08-11SCHROCK MICHAEL VSale (S)Common Stock, $.01 par value4,000USD 275.00USD 1,100,000SEC filing ↗
2026-07-15Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 260.88USD 391,325SEC filing ↗
2026-06-17Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 294.98USD 442,464SEC filing ↗
2026-06-05Running Michael J.Sale (S)Common Stock, $.01 par value510USD 272.17USD 138,807SEC filing ↗
2026-06-03Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,000USD 290.00USD 290,000SEC filing ↗
2026-06-01Rapp Karen MarieSale (S)Common Stock, $.01 par value500USD 270.00USD 135,000SEC filing ↗
2026-05-27Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,000USD 274.75USD 274,750SEC filing ↗
2026-05-20Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 252.77USD 379,148SEC filing ↗
2026-05-11Tan Victor (Pang Hau)Sale (S)Common Stock, $.01 par value3,000USD 271.23USD 813,690SEC filing ↗
2026-05-08Ninivaggi Angelo Michael JrSale (S)Common Stock, $.01 par value3,270USD 264.75USD 865,737SEC filing ↗
2026-05-07Ninivaggi Angelo Michael JrSale (S)Common Stock, $.01 par value2,298USD 262.99USD 604,342SEC filing ↗
2026-05-06Jermain Patrick JohnI (I)Common Stock, $.01 par value3,815USD 268.94USD 1,026,006SEC filing ↗
2026-05-06Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,000USD 270.75USD 270,750SEC filing ↗
2026-05-05Kelsey Todd P.Sale (S)Common Stock, $.01 par value3,000USD 268.45USD 805,350SEC filing ↗
2026-05-04Kelsey Todd P.Sale (S)Common Stock, $.01 par value2,403USD 263.89USD 634,139SEC filing ↗
2026-04-15Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 224.09USD 336,135SEC filing ↗
2026-03-18Kelsey Todd P.Sale (S)Common Stock, $.01 par value1,500USD 194.24USD 291,360SEC filing ↗
2026-02-27Rapp Karen MarieSale (S)Common Stock, $.01 par value500USD 195.59USD 97,795SEC filing ↗
2026-02-25Running Michael J.Sale (S)Common Stock, $.01 par value700USD 205.47USD 143,829SEC filing ↗
2026-02-25MARTINEZ RANDY JSale (S)Common Stock, $.01 par value1,000USD 203.14USD 203,140SEC filing ↗
2026-02-18Mihm Oliver K.Sale (S)Common Stock, $.01 par value9,541USD 201.40USD 1,921,557SEC filing ↗
2026-02-18Kelsey Todd P.Sale (S)Common Stock, $.01 par value5,231USD 195.78USD 1,024,109SEC filing ↗
2026-02-17Tan Victor (Pang Hau)Option exercise / conversion (M)Common Stock, $.01 par value2,022USD —USD —SEC filing ↗
2026-02-17Running Michael J.Option exercise / conversion (M)Common Stock, $.01 par value1,096USD —USD —SEC filing ↗
2026-02-17Running Michael J.Tax withholding (F)Common Stock, $.01 par value516USD 195.95USD 101,110SEC 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 · —
TickerPLXS
CIK0000785786
SectorTechnology
IndustryElectronic Components Yahoo Finance
SEC SIC3672 Printed Circuit Boards
ExchangeNasdaq

Data coverage

Local Form 4 history790 transaction lines from 2020-01-06 to 2026-09-16
2 P purchase lines · 380 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.